Sumeyra Demir Kanik · Sumeyra Demir Kanik · Sumeyra Demir Kanik · Sumeyra Demir Kanik · Sumeyra Demir Kanik · Sumeyra Demir Kanik
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -388,6 +388,28 @@ codec-asan:
      - test_output.txt
    expose_as: "asan selftest results"
+# code selftest testvectors with address-sanitizer binaries
+codec-usan:
+  extends:
+    - .test-job-linux
+    - .rules-merge-request
+  stage: test
+  needs: ["build-codec-sanitizers-linux"]
+  script:
+    - *print-common-info
+    - make clean
+    - make -j CLANG=3
+    - UBSAN_OPTIONS=suppressions=scripts/ubsan.supp,report_error_type=1 python3 scripts/self_test.py --create
+    - grep_exit_code=0
+    - grep UndefinedBehaviorSanitizer scripts/ref/logs/* || grep_exit_code=$?
+    - if [ $grep_exit_code != 1 ] ; then echo "Run errors in self_test.py with Clang undefined-behavior-sanitizer"; exit 1; fi
+  artifacts:
+    name: "mr-$CI_MERGE_REQUEST_IID--sha-$CI_COMMIT_SHORT_SHA--stage-$CI_JOB_STAGE--results"
+    expire_in: 1 week
+    paths:
+      - scripts/ref/logs/
+    expose_as: "usan selftest results"
 # test renderer executable
 renderer-smoke-test:
  extends:
@@ -455,6 +477,33 @@ renderer-msan:
      junit:
        - report-junit.xml
+# test renderer executable with cmake + usan
+renderer-usan:
+  extends:
+    - .test-job-linux
+    - .rules-merge-request
+  needs: ["build-codec-linux-cmake"]
+  stage: test
+  script:
+    - cmake -B cmake-build -G "Unix Makefiles" -DCLANG=usan  -DCOPY_EXECUTABLES_FROM_BUILD_DIR=true
+    - cmake --build cmake-build -- -j
+    - UBSAN_OPTIONS=suppressions=scripts/ubsan.supp,report_error_type=1,log_path=usan_log_catchall python3 -m pytest -q -n auto -rA --junit-xml=report-junit.xml tests/renderer/test_renderer.py
+    - grep_exit_code=0
+    - touch usan_log_empty # Creates an empty file, this is to avoid "grep: usan_log_*: No such file or directory" in case no USAN failures are reported from pytest
+    - grep UndefinedBehaviorSanitizer usan_log_* || grep_exit_code=$?
+    - if [ $grep_exit_code != 1 ] ; then echo "Run errors in test_renderer.py with Clang undefined-behavior-sanitizer"; exit 1; fi
+  artifacts:
+    name: "mr-$CI_MERGE_REQUEST_IID--sha-$CI_COMMIT_SHORT_SHA--job-$CI_JOB_NAME--results"
+    expire_in: 1 week
+    when: always
+    paths:
+      - report-junit.xml
+    expose_as: "renderer usan pytest results"
+    reports:
+      junit:
+        - report-junit.xml
 # compare renderer bitexactness between target and source branch
 renderer-pytest-on-merge-request:
  extends:

--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -70,8 +70,20 @@ if(UNIX)
      set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fsanitize=address")
      set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -fsanitize=address")
    elseif("${CLANG}" MATCHES "3" OR "${CLANG}" MATCHES "usan")
-      set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fsanitize=undefined")
+      # NOTE: keep in sync with list in Makefile
-      set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -fsanitize=undefined")
+      set(USAN_CHECKS_ENABLE
+        undefined # Default checks
+        # Extra checks
+        float-divide-by-zero
+        implicit-conversion
+        local-bounds
+      )
+      list(JOIN USAN_CHECKS_ENABLE "," USAN_CHECKS_ENABLE)
+      set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fsanitize=${USAN_CHECKS_ENABLE} -fsanitize-recover=${USAN_CHECKS_ENABLE}")
+      set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -fsanitize=${USAN_CHECKS_ENABLE} -fsanitize-recover=${USAN_CHECKS_ENABLE}")
+    else()
+      message(FATAL_ERROR "Unknown CLANG setting: ${CLANG}")
    endif()
  endif()
  # GCOV

--- a/Makefile
+++ b/Makefile
@@ -77,8 +77,12 @@ LDFLAGS += -fsanitize=address
 endif
 ifeq "$(CLANG)" "3"
 CC       = $(CCCLANG) 
-CFLAGS  += -fsanitize=undefined
+# NOTE: keep in sync with list in CMakeLists.txt
-LDFLAGS += -fsanitize=undefined
+usan_checks = undefined,float-divide-by-zero,implicit-conversion,local-bounds
+CFLAGS  += -fsanitize=$(usan_checks) 
+CFLAGS  += -fsanitize-recover=$(usan_checks) 
+LDFLAGS += -fsanitize=$(usan_checks)
+LDFLAGS += -fsanitize-recover=$(usan_checks)
 endif
 ifeq "$(RELEASE)" "1"

--- a/apps/renderer.c
+++ b/apps/renderer.c
@@ -175,6 +175,9 @@ typedef struct
    float lfeConfigElevation;
    bool lfeCustomRoutingEnabled;
    char inLfePanningMatrixFile[RENDERER_MAX_CLI_ARG_LENGTH];
+#ifdef FIX_488_SYNC_DELAY
+    float syncMdDelay;
+#endif
 } CmdlnArgs;
 typedef enum
@@ -203,6 +206,9 @@ typedef enum
 #endif
    CmdLnOptionId_referenceVectorFile,
    CmdLnOptionId_exteriorOrientationFile,
+#ifdef FIX_488_SYNC_DELAY
+    CmdLnOptionId_syncMdDelay,
+#endif
 } CmdLnOptionId;
 static const CmdLnParser_Option cliOptions[] = {
@@ -342,6 +348,14 @@ static const CmdLnParser_Option cliOptions[] = {
        .matchShort = "exof",
        .description = "External orientation trajectory file for simulation of external orientations",
    },
+#ifdef FIX_488_SYNC_DELAY
+    {
+        .id = CmdLnOptionId_syncMdDelay,
+        .match = "sync_md_delay",
+        .matchShort = "smd",
+        .description = "Metadata Synchronization Delay in ms, Default is 0. Quantized by 5ms subframes for TDRenderer (13ms -> 10ms -> 2subframes)",
+    },
+#endif
 };
@@ -1113,6 +1127,9 @@ int main(
    if ( args.inConfig.numAudioObjects > 0 )
    {
        IVAS_REND_SetTotalNumberOfObjects( hIvasRend, args.inConfig.numAudioObjects );
+#ifdef FIX_488_SYNC_DELAY
+        IVAS_REND_SetIsmMetadataDelay( hIvasRend, args.syncMdDelay );
+#endif
    }
    IVAS_REND_LfePanMtx lfePanMatrix;
@@ -1687,6 +1704,8 @@ int main(
                }
            }
        }
 #ifdef SPLIT_REND_WITH_HEAD_ROT
        for ( i = 0; i < args.inConfig.numBinBuses; ++i )
        {
@@ -1897,6 +1916,13 @@ int main(
    }
 #endif
+#ifdef FIX_488_SYNC_DELAY
+    if ( args.inConfig.numAudioObjects != 0 && ( args.outConfig.audioConfig == IVAS_REND_AUDIO_CONFIG_BINAURAL || args.outConfig.audioConfig == IVAS_REND_AUDIO_CONFIG_BINAURAL_ROOM_REVERB ) )
+    {
+        fprintf( stdout, "\n\nMetadata delayed %d subframes\n\n", (int16_t) round( args.syncMdDelay / ( 1000 / FRAMES_PER_SEC / MAX_PARAM_SPATIAL_SUBFRAMES ) ) );
+    }
+#endif
    if ( !args.quietModeEnabled && args.delayCompensationEnabled )
    {
        fprintf( stdout, "\nRenderer delay:         %-5u [samples] - Timescale: %5u\n", delayNumSamples_orig, delayTimeScale );
@@ -2483,6 +2509,10 @@ static CmdlnArgs defaultArgs(
    args.lfeCustomRoutingEnabled = false;
    clearString( args.inLfePanningMatrixFile );
+#ifdef FIX_488_SYNC_DELAY
+    args.syncMdDelay = 0;
+#endif
    return args;
 }
@@ -2622,6 +2652,13 @@ static void parseOption(
                exit( -1 );
            }
            break;
+#ifdef FIX_488_SYNC_DELAY
+        case CmdLnOptionId_syncMdDelay:
+            assert( numOptionValues == 1 );
+            /* Metadata Delay to sync with audio delay in ms */
+            args->syncMdDelay = strtof( optionValues[0], NULL );
+            break;
+#endif
        default:
            assert( 0 && "This should be unreachable - all command line options should be explicitly handled." );
            break;

--- a/lib_com/options.h
+++ b/lib_com/options.h
@@ -158,9 +158,26 @@
 #define FIX_559_EXTL_IGF_MISMATCH                       /* VA: issue 559: fix mismatch between st->extl and st->igf observed as crash in PlanarSBA bitrate switching */
 #define FIX_571_REVERB_NOT_ACTIVATED_ISM                /* Philips: Issue 571: Reverb not activated for discrete and parametric ISM */
 #define FIX_QMETA_SID_5k2                               /* Nokia: Issue 137: enable using full 5.2k bitrate in MASA SID */
+#define FIX_578_PARAMMC_ILD_BS                          /* FhG: Issue 578: transmitt also center ILD in band 0 when LFE is active in 3TC ParamMC */
+#define FIX_UNCLR_ISSUE                                 /* VoiceAge: issue 574: Fix UNCLR mis-classifications in noisy speech stereo */
+#define FIX_TCX_LOWRATE_LIMITATION                      /* VA: issue 577: TCX bitrate limitation only when DEBUGGING is active */
+#define FIX_575_LOW_OVERLAP_PLC_RECOVERY                /* FhG: Issue 575 fix for PLC and transistion to TCX5*/
+#define FIX_488_SYNC_DELAY                             /* Eri: Issue 488: Waveform and MD desynchronized in external renderer */
 #define FIX_550_FIRST_FRAME_ACCESS                      /* Eri: Issue 550: TD Object renderer: first frame accesses wrong transport channel offsets */
 #define FIX_550_FIRST_FRAME_ACCESS_ALT                  /* Eri: Issue 550: Should be merged with FIX_550_FIRST_FRAME_ACCESS above, or accepted at the same time */
 #define FIX_569_TD_FILTER_LENGTH                        /* Eri: Issue 569: If an HRTF binary file exceeds the SFX_SPAT_BIN_MAX_FILTER_LENGTH the decoder crashes. This truncates the filter when generated from the model.  */
+#define ISM_FB_16k4                                     /* VA: Issue: 579: change BW from SWB to FB in NxISM conditions to match the EVS codec */
+#define FIX_580_PARAMMC_ENER_BURSTS                     /* FhG: issue 580: energy bursts due to ILD holding when energy relations change too much */
+#define FIX_550_FIRST_FRAME_ACCESS                      /* Eri: Issue 550: TD Object renderer: first frame accesses wrong transport channel offsets */
+#define FIX_550_FIRST_FRAME_ACCESS_ALT                  /* Eri: Issue 550: Should be merged with FIX_550_FIRST_FRAME_ACCESS above, or accepted at the same time */
+#define FIX_569_TD_FILTER_LENGTH                        /* Eri: Issue 569: If an HRTF binary file exceeds the SFX_SPAT_BIN_MAX_FILTER_LENGTH the decoder crashes. This truncates the filter when generated from the model.  */
 #define FIX_595_SHL_NOGLOB                              /* FhG: Issue 595: compilation with BASOP_NOGLOB disabled */
 #define UPDATE_FASTCONV_SBA_FILTER                      /* Dlb: Issue 584: Update SBA CLDFB-Domain HRTFs */
 #define FIX_570_SF_EXT_ORIENTATION
@@ -171,6 +188,7 @@
 #define FIX_MEM_REALLOC_IND_LIST                        /* VA: issue 601: failure of the automatic memory re-allocation mechanism when ind_list[] buffer is depleted in MASA mode with 2 TC*/
 #define FIX_1720_HRTF_FASTCONV                          /* Dlb : Binaural and Binaural room format RAM saving in SBA mode */
 #define JBM_PARAMUPMIX                                  /* Dlb: Issue 471: Integrate the Multichannel Parametric Upmix into the JBM path */
+#define FIX_194_LFE_DELAY_EXTREND                       /* FhG: Issue 194: Fix delay alignment of LFE in external renderer */
 #define FIX_582_INDEX_OUT_OF_BOUNDS_SNS_AVQ_DEC         /* FhG: fix an undefined behaviour error in SNS AVQ decoding */
 #define FIX_614_ADD_TO_NULL_PTR_DIRAC_SETUP             /* FhG: Issue 614: prevent adding to a null pointer in dirac setup code */
 #define UPDATE_REVERB_UTILS                             /* Use CLDFB HRTFs of the appropriate SBA order in get_IR_from_filter_taps() */
@@ -190,6 +208,9 @@
 #define FIX_622_SILENCE_USAN_WARNING                    /* FhG: silenceusan warning in ifft code */
 #define FIX_615_UBSAN_SPAR_TO_DIRAC                     /*Dlb : Fix for UBSAN issue 615*/
+#define FIX_626_VARIABLE_TYPE_MDCT_CONC                 /* FhG: trivial fix to fix USAN error */
+#define FIX_616_DIV_ZERO_MCT                            /*FhG : Fix UBSAN division by zero error of issue 616*/
 /* ################## End BE DEVELOPMENT switches ######################### */

--- a/lib_dec/tonalMDCTconcealment.c
+++ b/lib_dec/tonalMDCTconcealment.c
@@ -126,7 +126,11 @@ void TonalMDCTConceal_SaveFreqSignal(
    const int16_t infoIGFStartLine )
 {
    float *temp;
+#ifdef FIX_626_VARIABLE_TYPE_MDCT_CONC
+    uint16_t nOldSamples;
+#else
    int16_t nOldSamples;
+#endif
    assert( nNewSamples > 0 && nNewSamples <= 2 * L_FRAME_MAX );

--- a/lib_enc/ivas_mct_core_enc.c
+++ b/lib_enc/ivas_mct_core_enc.c
@@ -143,8 +143,13 @@ static void AdjustChannelRatios(
    }
    for ( i = 3; i < nChannels; i++ )
    {
+#ifdef FIX_616_DIV_ZERO_MCT
+        cur_ratio = (float) chBitRatios[i] / ( sum_ratio + FLT_MIN );
+        tar_ratio = (float) force_ch_bit_ratios[i] / ( sum_tar_ratio + FLT_MIN );
+#else
        cur_ratio = (float) chBitRatios[i] / sum_ratio;
        tar_ratio = (float) force_ch_bit_ratios[i] / sum_tar_ratio;
+#endif
        tar_ratio = min( tar_ratio, cur_ratio );
        chBitRatios[i] = (int16_t) ( tar_ratio * sum_tar_ratio );

--- a/lib_rend/ivas_objectRenderer.c
+++ b/lib_rend/ivas_objectRenderer.c
@@ -681,6 +681,9 @@ ivas_error ivas_td_binaural_renderer_ext(
    const COMBINED_ORIENTATION_HANDLE *hCombinedOrientationData, /* i  : Combined head and external orientations */
    const IVAS_REND_AudioObjectPosition *currentPos,             /* i  : Object position                   */
    const REVERB_HANDLE hReverb,                                 /* i  : Reverberator handle               */
+#ifdef FIX_488_SYNC_DELAY
+    const int16_t ism_md_subframe_update_ext, /* i: Metadata Delay in subframes to sync with audio delay */
+#endif
    const int16_t output_frame, /* i  : output frame length               */
    float output[][L_FRAME48k]  /* i/o: SCE channels / Binaural synthesis */
 )
@@ -693,7 +696,9 @@ ivas_error ivas_td_binaural_renderer_ext(
    IVAS_REND_AudioConfigType inConfigType;
    AUDIO_CONFIG transport_config;
    ivas_error error;
+#ifndef FIX_488_SYNC_DELAY
    int16_t ism_md_subframe_update_ext;
+#endif
    float *p_output[MAX_OUTPUT_CHANNELS];
    int16_t ch;
@@ -707,7 +712,10 @@ ivas_error ivas_td_binaural_renderer_ext(
    inConfigType = getAudioConfigType( inConfig );
    lfe_idx = LFE_CHANNEL;
    hIsmMetaData[0] = NULL;
+#ifndef FIX_488_SYNC_DELAY
    ism_md_subframe_update_ext = 0;
+#endif
    if ( inConfigType == IVAS_REND_AUDIO_CONFIG_TYPE_CHANNEL_BASED )
    {

--- a/lib_rend/ivas_prot_rend.h
+++ b/lib_rend/ivas_prot_rend.h
@@ -579,6 +579,9 @@ ivas_error ivas_td_binaural_renderer_ext(
    const COMBINED_ORIENTATION_HANDLE *hCombinedOrientationData, /* i  : Combined head and external orientations */
    const IVAS_REND_AudioObjectPosition *currentPos,            /* i  : Object position                         */
    const REVERB_HANDLE hReverb,                                /* i  : Reverberator handle                     */
+#ifdef FIX_488_SYNC_DELAY
+    const int16_t ism_md_subframe_update_ext,                   /* i: Metadata Delay in subframes to sync with audio delay */
+#endif
    const int16_t output_frame,                                 /* i  : output frame length                     */
    float output[][L_FRAME48k]                                  /* i/o: SCE channels / Binaural synthesis       */
 );

--- a/lib_rend/lib_rend.c
+++ b/lib_rend/lib_rend.c
@@ -61,6 +61,10 @@
 #define MAX_CLDFB_BUFFER_LENGTH ( MAX_CLDFB_BUFFER_LENGTH_PER_CHANNEL * MAX_INPUT_CHANNELS )
 #define MAX_BIN_BUFFER_LENGTH   ( MAX_BUFFER_LENGTH_PER_CHANNEL * BINAURAL_CHANNELS )
+#ifdef FIX_194_LFE_DELAY_EXTREND
+#define MAX_BIN_DELAY_SAMPLES 50 /* Maximum supported rendering latency for binaural IRs */
+#endif
 #else
 #define MAX_BUFFER_LENGTH ( MAX_BUFFER_LENGTH_PER_CHANNEL * MAX_INPUT_CHANNELS )
 #endif
@@ -142,6 +146,9 @@ typedef struct
    float nonDiegeticPanGain;
    OMASA_ANA_HANDLE hOMasa;
    uint16_t total_num_objects;
+#ifdef FIX_488_SYNC_DELAY
+    float ism_metadata_delay_ms;
+#endif
 } input_ism;
 typedef struct
@@ -175,6 +182,10 @@ typedef struct
    float nonDiegeticPanGain;
    lfe_routing lfeRouting;
    float *bufferData;
+#ifdef FIX_194_LFE_DELAY_EXTREND
+    int16_t binauralDelaySmp;
+    float *lfeDelayBuffer;
+#endif
    MCMASA_ANA_HANDLE hMcMasa;
 } input_mc;
@@ -286,6 +297,30 @@ static void freeInputBaseBufferData( float **data )
    return;
 }
+#ifdef FIX_194_LFE_DELAY_EXTREND
+static ivas_error allocateMcLfeDelayBuffer( float **lfeDelayBuffer, const int16_t data_size )
+{
+    *lfeDelayBuffer = (float *) malloc( data_size * sizeof( float ) );
+    if ( *lfeDelayBuffer == NULL )
+    {
+        return IVAS_ERROR( IVAS_ERR_FAILED_ALLOC, "Cannot allocate memory for LFE delay buffer" );
+    }
+    return IVAS_ERR_OK;
+}
+static void freeMcLfeDelayBuffer( float **lfeDelayBuffer )
+{
+    if ( *lfeDelayBuffer != NULL )
+    {
+        free( *lfeDelayBuffer );
+        *lfeDelayBuffer = NULL;
+    }
+    return;
+}
+#endif
 static IVAS_QUATERNION quaternionInit(
    void )
 {
@@ -2133,6 +2168,9 @@ static ivas_error initMcBinauralRendering(
    ivas_error error;
 #ifdef SPLIT_REND_WITH_HEAD_ROT
    int16_t i;
+#endif
+#ifdef FIX_194_LFE_DELAY_EXTREND
+    int32_t binauralDelayNs;
 #endif
    int32_t outSampleRate;
@@ -2251,6 +2289,18 @@ static ivas_error initMcBinauralRendering(
        }
    }
+#ifdef FIX_194_LFE_DELAY_EXTREND
+    /* determine binaural delay ( used for aligning LFE to output signal ) */
+    binauralDelayNs = max( ( inputMc->crendWrapper != NULL ) ? inputMc->crendWrapper->binaural_latency_ns : 0,
+                           inputMc->tdRendWrapper.binaural_latency_ns );
+    inputMc->binauralDelaySmp = (int16_t) roundf( (float) binauralDelayNs * *inputMc->base.ctx.pOutSampleRate / 1000000000.f );
+    if ( inputMc->binauralDelaySmp > MAX_BIN_DELAY_SAMPLES )
+    {
+        return IVAS_ERROR( IVAS_ERR_WRONG_PARAMS, "Invalid delay for LFE binaural rendering!)" );
+    }
+#endif /* FIX_194_LFE_DELAY_EXTREND */
    return IVAS_ERR_OK;
 }
@@ -2367,6 +2417,13 @@ static ivas_error setRendInputActiveMc(
        return IVAS_ERR_IO_CONFIG_PAIR_NOT_SUPPORTED;
    }
+#ifdef FIX_194_LFE_DELAY_EXTREND
+    if ( ( error = allocateMcLfeDelayBuffer( &inputMc->lfeDelayBuffer, MAX_BIN_DELAY_SAMPLES ) ) != IVAS_ERR_OK )
+    {
+        return error;
+    }
+#endif
    if ( ( error = allocateInputBaseBufferData( &inputMc->bufferData, MAX_BUFFER_LENGTH ) ) != IVAS_ERR_OK )
    {
        return error;
@@ -2381,6 +2438,9 @@ static ivas_error setRendInputActiveMc(
    inputMc->hMcMasa = NULL;
    initRotGains( inputMc->rot_gains_prev );
    inputMc->lfeRouting = defaultLfeRouting( inConfig, inputMc->customLsInput, outConfig, *inputMc->base.ctx.pCustomLsOut );
+#ifdef FIX_194_LFE_DELAY_EXTREND
+    set_zero( inputMc->lfeDelayBuffer, MAX_BIN_DELAY_SAMPLES );
+#endif
 #ifdef SPLIT_REND_WITH_HEAD_ROT
    for ( i = 0; i < (int16_t) ( sizeof( inputMc->splitTdRendWrappers ) / sizeof( *inputMc->splitTdRendWrappers ) ); ++i )
@@ -2425,6 +2485,9 @@ static void clearInputMc(
    rendCtx = inputMc->base.ctx;
+#ifdef FIX_194_LFE_DELAY_EXTREND
+    freeMcLfeDelayBuffer( &inputMc->lfeDelayBuffer );
+#endif
    freeInputBaseBufferData( &inputMc->bufferData );
    initRendInputBase( &inputMc->base, IVAS_REND_AUDIO_CONFIG_UNKNOWN, 0, rendCtx,
                       NULL, 0 );
@@ -3574,6 +3637,9 @@ ivas_error IVAS_REND_Open(
        hIvasRend->inputsMc[i].hReverb = NULL;
        hIvasRend->inputsMc[i].tdRendWrapper.hBinRendererTd = NULL;
        hIvasRend->inputsMc[i].bufferData = NULL;
+#ifdef FIX_194_LFE_DELAY_EXTREND
+        hIvasRend->inputsMc[i].lfeDelayBuffer = NULL;
+#endif
        hIvasRend->inputsMc[i].nonDiegeticPan = nonDiegeticPan;
        hIvasRend->inputsMc[i].nonDiegeticPanGain = nonDiegeticPanGain;
        hIvasRend->inputsMc[i].hMcMasa = NULL;
@@ -4034,7 +4100,7 @@ ivas_error IVAS_REND_AddInput(
    }
 #ifdef SPLIT_REND_WITH_HEAD_ROT
-    if ( hIvasRend->splitRendEncBuffer.data == NULL )
+    if ( hIvasRend->splitRendEncBuffer.data == NULL && hIvasRend->hRendererConfig != NULL )
    {
        if ( ( error = initSplitRend( &hIvasRend->splitRendWrapper, &hIvasRend->splitRendEncBuffer, &hIvasRend->hRendererConfig->split_rend_config, hIvasRend->headRotData, hIvasRend->sampleRateOut, hIvasRend->outputConfig ) ) != IVAS_ERR_OK )
        {
@@ -5585,9 +5651,14 @@ static ivas_error renderIsmToBinaural(
 {
    float tmpTDRendBuffer[MAX_OUTPUT_CHANNELS][L_FRAME48k];
    ivas_error error;
+#ifdef FIX_488_SYNC_DELAY
+    int16_t ism_md_subframe_update_ext;
+#endif
    push_wmops( "renderIsmToBinaural" );
+#ifdef FIX_488_SYNC_DELAY
+    /* Metadata Delay to sync with audio delay converted from ms to 5ms (1000/50/4) subframe index */
+    ism_md_subframe_update_ext = (int16_t) round( ismInput->ism_metadata_delay_ms / ( 1000 / FRAMES_PER_SEC / MAX_PARAM_SPATIAL_SUBFRAMES ) );
+#endif
    copyBufferTo2dArray( ismInput->base.inputBuffer, tmpTDRendBuffer );
    if ( ( error = ivas_td_binaural_renderer_ext( &ismInput->tdRendWrapper,
@@ -5596,6 +5667,9 @@ static ivas_error renderIsmToBinaural(
                                                  ismInput->base.ctx.pCombinedOrientationData,
                                                  &ismInput->currentPos,
                                                  ismInput->hReverb,
+#ifdef FIX_488_SYNC_DELAY
+                                                  ism_md_subframe_update_ext,
+#endif
                                                  outAudio.config.numSamplesPerChannel,
                                                  tmpTDRendBuffer ) ) != IVAS_ERR_OK )
    {
@@ -5761,9 +5835,16 @@ static ivas_error renderIsmToBinauralReverb(
 {
    float tmpRendBuffer[MAX_OUTPUT_CHANNELS][L_FRAME48k];
    ivas_error error;
+#ifdef FIX_488_SYNC_DELAY
+    int16_t ism_md_subframe_update_ext;
+#endif
    push_wmops( "renderIsmToBinauralRoom" );
+#ifdef FIX_488_SYNC_DELAY
+    /* Metadata Delay to sync with audio delay converted from ms to 5ms (1000/50/4) subframe index */
+    ism_md_subframe_update_ext = (int16_t) round( ismInput->ism_metadata_delay_ms / ( 1000 / FRAMES_PER_SEC / MAX_PARAM_SPATIAL_SUBFRAMES ) );
+#endif
    copyBufferTo2dArray( ismInput->base.inputBuffer, tmpRendBuffer );
    if ( ( error = ivas_td_binaural_renderer_ext( &ismInput->tdRendWrapper,
@@ -5772,6 +5853,9 @@ static ivas_error renderIsmToBinauralReverb(
                                                  ismInput->base.ctx.pCombinedOrientationData,
                                                  &ismInput->currentPos,
                                                  ismInput->hReverb,
+#ifdef FIX_488_SYNC_DELAY
+                                                  ism_md_subframe_update_ext,
+#endif
                                                  outAudio.config.numSamplesPerChannel,
                                                  tmpRendBuffer ) ) != IVAS_ERR_OK )
    {
@@ -5915,11 +5999,18 @@ static ivas_error renderIsmToSplitBinaural(
    float tmpBinaural[MAX_HEAD_ROT_POSES * BINAURAL_CHANNELS][L_FRAME48k];
    int16_t output_frame = ismInput->base.inputBuffer.config.numSamplesPerChannel;
    COMBINED_ORIENTATION_HANDLE pCombinedOrientationData;
+#ifdef FIX_488_SYNC_DELAY
+    int16_t ism_md_subframe_update_ext;
+#endif
    push_wmops( "renderIsmToSplitBinaural" );
    pSplitRendWrapper = ismInput->base.ctx.pSplitRendWrapper;
    pMultiBinPoseData = &pSplitRendWrapper->multiBinPoseData;
+#ifdef FIX_488_SYNC_DELAY
+    /* Metadata Delay to sync with audio delay converted from ms to 5ms (1000/50/4) subframe index */
+    ism_md_subframe_update_ext = (int16_t) round( ismInput->ism_metadata_delay_ms / ( 1000 / FRAMES_PER_SEC / MAX_PARAM_SPATIAL_SUBFRAMES ) );
+#endif
    /* If not yet allocated, open additional instances of TD renderer */
    for ( i = 0; i < pMultiBinPoseData->num_poses - 1; ++i )
@@ -5998,6 +6089,9 @@ static ivas_error renderIsmToSplitBinaural(
                                                   ismInput->base.ctx.pCombinedOrientationData,
                                                   &ismInput->currentPos,
                                                   NULL,
+#ifdef FIX_488_SYNC_DELAY
+                                                   ism_md_subframe_update_ext,
+#endif
                                                   output_frame,
                                                   tmpProcessing );
            if ( error != IVAS_ERR_OK )
@@ -6013,6 +6107,9 @@ static ivas_error renderIsmToSplitBinaural(
                                                   ismInput->base.ctx.pCombinedOrientationData,
                                                   &ismInput->currentPos,
                                                   NULL,
+#ifdef FIX_488_SYNC_DELAY
+                                                   ism_md_subframe_update_ext,
+#endif
                                                   output_frame,
                                                   tmpProcessing );
            if ( error != IVAS_ERR_OK )
@@ -6141,6 +6238,7 @@ static ivas_error renderActiveInputsIsm(
        }
        if ( ( error = renderInputIsm( pCurrentInput, hIvasRend->outputConfig, outAudio ) ) != IVAS_ERR_OK )
        {
            return error;
        }
@@ -6156,13 +6254,21 @@ static ivas_error renderLfeToBinaural(
 #endif
    IVAS_REND_AudioBuffer outAudio )
 {
-    int16_t i;
    int16_t lfe_idx;
 #ifdef SPLIT_REND_WITH_HEAD_ROT
    int16_t pose_idx, num_poses;
 #endif
    float gain;
+#ifdef FIX_194_LFE_DELAY_EXTREND
+    int16_t ear_idx;
+    float tmpLfeBuffer[MAX_BUFFER_LENGTH_PER_CHANNEL];
+    int16_t frame_size, num_cpy_smpl_cur_frame, num_cpy_smpl_prev_frame;
+    const float *lfeInput;
+    float *writePtr;
+#else
+    int16_t i;
    float *readPtr, *writePtr;
+#endif
 #ifdef SPLIT_REND_WITH_HEAD_ROT
    assert( ( getAudioConfigType( outConfig ) == IVAS_REND_AUDIO_CONFIG_TYPE_BINAURAL ) && "Must be binaural output" );
@@ -6188,8 +6294,24 @@ static ivas_error renderLfeToBinaural(
        return IVAS_ERR_OK;
    }
+#ifdef FIX_194_LFE_DELAY_EXTREND
+    /* --- Prepare LFE signal to be added to binaural output --- */
+    lfeInput = getSmplPtr( mcInput->base.inputBuffer, lfe_idx, 0 );
+    frame_size = mcInput->base.inputBuffer.config.numSamplesPerChannel;
+    num_cpy_smpl_prev_frame = mcInput->binauralDelaySmp;
+    num_cpy_smpl_cur_frame = frame_size - num_cpy_smpl_prev_frame;
+    /* Assuming LFE should be delayed by less that the duration of one frame */
+    assert( mcInput->binauralDelaySmp < frame_size );
+    /* Get delayed LFE signal from previous frame, apply gain and save in tmp buffer */
+    v_multc( mcInput->lfeDelayBuffer, gain, tmpLfeBuffer, num_cpy_smpl_prev_frame );
+    /* Continue filling tmp buffer, now with LFE signal from current frame */
+    v_multc( lfeInput, gain, tmpLfeBuffer + num_cpy_smpl_prev_frame, num_cpy_smpl_cur_frame );
+    /* Save remaining LFE samples of current frame for next frame */
+    mvr2r( lfeInput + num_cpy_smpl_cur_frame, mcInput->lfeDelayBuffer, num_cpy_smpl_prev_frame );
+#endif
 #ifdef SPLIT_REND_WITH_HEAD_ROT
-    /* Copy LFE to left and right binaural channels */
+    /* Copy LFE to left and right binaural channels for all poses */
    if ( mcInput->base.ctx.pSplitRendWrapper != NULL )
    {
        num_poses = mcInput->base.ctx.pSplitRendWrapper->multiBinPoseData.num_poses;
@@ -6201,6 +6323,13 @@ static ivas_error renderLfeToBinaural(
    for ( pose_idx = 0; pose_idx < num_poses; ++pose_idx )
    {
+#ifdef FIX_194_LFE_DELAY_EXTREND
+        for ( ear_idx = 0; ear_idx < BINAURAL_CHANNELS; ++ear_idx )
+        {
+            writePtr = getSmplPtr( outAudio, pose_idx * BINAURAL_CHANNELS + ear_idx, 0 );
+            v_add( writePtr, tmpLfeBuffer, writePtr, frame_size );
+        }
+#else
        readPtr = getSmplPtr( mcInput->base.inputBuffer, lfe_idx, 0 );
        writePtr = getSmplPtr( outAudio, pose_idx * BINAURAL_CHANNELS, 0 );
        for ( i = 0; i < mcInput->base.inputBuffer.config.numSamplesPerChannel; i++ )
@@ -6214,9 +6343,17 @@ static ivas_error renderLfeToBinaural(
        {
            *writePtr++ += gain * ( *readPtr++ );
        }
+#endif /* FIX_194_LFE_DELAY_EXTREND */
    }
 #else /* SPLIT_REND_WITH_HEAD_ROT */
    /* Copy LFE to left and right ears */
+#ifdef FIX_194_LFE_DELAY_EXTREND
+    for ( ear_idx = 0; ear_idx < BINAURAL_CHANNELS; ++ear_idx )
+    {
+        writePtr = getSmplPtr( outAudio, pose_idx * BINAURAL_CHANNELS + ear_idx, 0 );
+        v_add( writePtr, tmpLfeBuffer, writePtr, frame_size );
+    }
+#else
    readPtr = getSmplPtr( mcInput->base.inputBuffer, lfe_idx, 0 );
    writePtr = getSmplPtr( outAudio, 0, 0 );
    for ( i = 0; i < mcInput->base.inputBuffer.config.numSamplesPerChannel; i++ )
@@ -6230,7 +6367,9 @@ static ivas_error renderLfeToBinaural(
    {
        *writePtr++ += gain * ( *readPtr++ );
    }
+#endif /* FIX_194_LFE_DELAY_EXTREND */
 #endif /* SPLIT_REND_WITH_HEAD_ROT */
    pop_wmops();
    return IVAS_ERR_OK;
@@ -6283,7 +6422,11 @@ static ivas_error renderMcToBinaural(
        if ( ( error = ivas_td_binaural_renderer_ext( &mcInput->tdRendWrapper, mcInput->base.inConfig, &mcInput->customLsInput,
                                                      mcInput->base.ctx.pCombinedOrientationData,
                                                      NULL,
-                                                      mcInput->hReverb, mcInput->base.inputBuffer.config.numSamplesPerChannel, tmpRendBuffer ) ) != IVAS_ERR_OK )
+                                                      mcInput->hReverb,
+#ifdef FIX_488_SYNC_DELAY
+                                                      0,
+#endif
+                                                      mcInput->base.inputBuffer.config.numSamplesPerChannel, tmpRendBuffer ) ) != IVAS_ERR_OK )
        {
            return error;
        }
@@ -6387,7 +6530,11 @@ static ivas_error renderMcToBinauralRoom(
        if ( ( error = ivas_td_binaural_renderer_ext( &mcInput->tdRendWrapper, mcInput->base.inConfig, &mcInput->customLsInput,
                                                      mcInput->base.ctx.pCombinedOrientationData,
-                                                      NULL, mcInput->hReverb, mcInput->base.inputBuffer.config.numSamplesPerChannel, tmpRendBuffer ) ) != IVAS_ERR_OK )
+                                                      NULL, mcInput->hReverb,
+#ifdef FIX_488_SYNC_DELAY
+                                                      0,
+#endif
+                                                      mcInput->base.inputBuffer.config.numSamplesPerChannel, tmpRendBuffer ) ) != IVAS_ERR_OK )
        {
            return error;
        }
@@ -6699,6 +6846,9 @@ static ivas_error renderMcToSplitBinaural(
                                                          &pCombinedOrientationDataLocal,
                                                          NULL,
                                                          mcInput->hReverb,
+#ifdef FIX_488_SYNC_DELAY
+                                                          0, /* Ism Audio Metadata Delay Sync in ms for External Renderer */
+#endif
                                                          mcInput->base.inputBuffer.config.numSamplesPerChannel,
                                                          tmpRendBuffer ) ) != IVAS_ERR_OK )
            {
@@ -8157,6 +8307,33 @@ ivas_error IVAS_REND_SetTotalNumberOfObjects(
    return IVAS_ERR_OK;
 }
+#ifdef FIX_488_SYNC_DELAY
+/*---------------------------------------------------------------------*
+ * IVAS_REND_SetIsmMetadataDelay( )
+ *
+ * Set the Metadata Delay in ms in order to sync with audio delay
+ *---------------------------------------------------------------------*/
+ivas_error IVAS_REND_SetIsmMetadataDelay(
+    IVAS_REND_HANDLE hIvasRend, /* i/o: IVAS renderer handle    */
+    const float sync_md_delay   /* i:   Ism Metadata Delay in ms to sync with audio delay */
+)
+{
+    int16_t i;
+    if ( hIvasRend == NULL )
+    {
+        return IVAS_ERR_UNEXPECTED_NULL_POINTER;
+    }
+    for ( i = 0; i < RENDERER_MAX_ISM_INPUTS; ++i )
+    {
+        hIvasRend->inputsIsm[i].ism_metadata_delay_ms = sync_md_delay;
+    }
+    return IVAS_ERR_OK;
+}
+#endif
 /*-------------------------------------------------------------------*
 * IVAS_REND_GetSamples()
@@ -8260,6 +8437,7 @@ ivas_error IVAS_REND_GetSamples(
    /* Clear original output buffer */
    set_zero( outAudio.data, outAudio.config.numChannels * outAudio.config.numSamplesPerChannel );
 #ifdef SPLIT_REND_WITH_HEAD_ROT
    outAudioOrig = outAudio;
    /* Use internal buffer if outputting split rendering bitstream */
@@ -8284,7 +8462,6 @@ ivas_error IVAS_REND_GetSamples(
        set_zero( outAudio.data, outAudio.config.numChannels * outAudio.config.numSamplesPerChannel );
    }
 #endif
    if ( ( error = renderActiveInputsIsm( hIvasRend, outAudio ) ) != IVAS_ERR_OK )
    {
        return error;

--- a/lib_rend/lib_rend.h
+++ b/lib_rend/lib_rend.h
@@ -349,6 +349,13 @@ ivas_error IVAS_REND_SetTotalNumberOfObjects(
    const uint16_t total_num_objects                /* i  : total number of objects                             */
 );
+#ifdef FIX_488_SYNC_DELAY
+ivas_error IVAS_REND_SetIsmMetadataDelay(
+    IVAS_REND_HANDLE hIvasRend,                     /* i/o: IVAS renderer handle    */
+    const float sync_md_delay                       /* i:   Metadata Delay in ms to sync with audio delay */
+);
+#endif
 ivas_error IVAS_REND_GetNumAllObjects(
    IVAS_REND_CONST_HANDLE hIvasRend,               /* i  : Renderer handle                                     */
    int16_t *numChannels                            /* o  : number of all objects                               */

--- a/scripts/ubsan.supp
+++ b/scripts/ubsan.supp
+# From self_test.py
+alignment:hrtf_file_reader.c
+bounds:dec_acelp.c
+bounds:enc_acelp.c
+bounds:enc_gain.c
+bounds:ivas_spar_decoder.c
+bounds:trans_direct.c
+bounds:trans_inv.c
+float-cast-overflow:ivas_dirac_com.c
+float-divide-by-zero:ivas_stereo_cng_dec.c
+float-divide-by-zero:swb_tbe_enc.c
+implicit-integer-sign-change:ACcontextMapping.c
+implicit-integer-sign-change:avq_dec.c
+implicit-integer-sign-change:bitstream.c
+implicit-integer-sign-change:cod4t64.c
+implicit-integer-sign-change:dec_prm.c
+implicit-integer-sign-change:dec4t64.c
+implicit-integer-sign-change:enc_acelp.c
+implicit-integer-sign-change:enc_prm.c
+implicit-integer-sign-change:enh40.c
+implicit-integer-sign-change:inov_dec.c
+implicit-integer-sign-change:inov_enc.c
+implicit-integer-sign-change:ivas_mdct_core_dec.c
+implicit-integer-sign-change:jbm_jb4sb.c
+implicit-integer-sign-change:jbm_pcmdsp_apa.c
+implicit-integer-sign-change:cod4t64_fast.c
+implicit-integer-sign-change:range_enc.c
+implicit-integer-sign-change:tcq_position_arith.c
+implicit-integer-sign-change:tonalMDCTconcealment.c
+implicit-signed-integer-truncation:ACcontextMapping_dec.c
+implicit-signed-integer-truncation:ACcontextMapping_enc.c
+implicit-signed-integer-truncation:cng_dec.c
+implicit-signed-integer-truncation:cod_tcx.c
+implicit-signed-integer-truncation:dec_tcx.c
+implicit-signed-integer-truncation:hdecnrm.c
+implicit-signed-integer-truncation:ivas_qmetadata_enc.c
+implicit-signed-integer-truncation:lib_dec.c
+implicit-signed-integer-truncation:longarith.c
+implicit-signed-integer-truncation:pvq_core_dec.c
+implicit-signed-integer-truncation:pvq_core_enc.c
+implicit-signed-integer-truncation:tcq_position_arith.c
+implicit-signed-integer-truncation:tools.c
+null:ivas_dirac_com.c
+pointer-overflow:ivas_dirac_dec.c
+pointer-overflow:ivas_dirac_output_synthesis_dec.c
+pointer-overflow:ivas_dirac_rend.c
+shift-base:basop32.c
+shift-base:enh40.c
+shift-base:enh40.h
+shift-base:enh1632.c
+shift-base:hq_lr_dec.c
+signed-integer-overflow:basop32.c
--- a/tests/renderer/test_renderer.py
+++ b/tests/renderer/test_renderer.py
@@ -36,13 +36,13 @@ from .utils import *
 @pytest.mark.parametrize("out_fmt", OUTPUT_FORMATS[2:])
 @pytest.mark.parametrize("in_fmt", INPUT_FORMATS_AMBI)
 def test_ambisonics(test_info, in_fmt, out_fmt):
-    run_renderer(in_fmt, out_fmt)
+    run_renderer(in_fmt, out_fmt, test_case_name=test_info.node.name)
 @pytest.mark.parametrize("out_fmt", OUTPUT_FORMATS_BINAURAL)
 @pytest.mark.parametrize("in_fmt", INPUT_FORMATS_AMBI)
 def test_ambisonics_binaural_static(test_info, in_fmt, out_fmt):
-    run_renderer(in_fmt, out_fmt)
+    run_renderer(in_fmt, out_fmt, test_case_name=test_info.node.name)
 @pytest.mark.parametrize("trj_file", HR_TRAJECTORIES_TO_TEST)
@@ -52,6 +52,7 @@ def test_ambisonics_binaural_headrotation(test_info, in_fmt, out_fmt, trj_file):
    run_renderer(
        in_fmt,
        out_fmt,
+        test_case_name=test_info.node.name,
        trj_file=HR_TRAJECTORY_DIR.joinpath(f"{trj_file}.csv"),
    )
@@ -251,7 +252,7 @@ def test_ambisonics_binaural_headrotation_refveclev_vs_refvec(
 @pytest.mark.parametrize("out_fmt", OUTPUT_FORMATS[2:])
 @pytest.mark.parametrize("in_fmt", INPUT_FORMATS_MC)
 def test_multichannel(test_info, in_fmt, out_fmt):
-    run_renderer(in_fmt, out_fmt)
+    run_renderer(in_fmt, out_fmt, test_case_name=test_info.node.name)
 @pytest.mark.parametrize("out_fmt", OUTPUT_FORMATS_BINAURAL)
@@ -260,7 +261,7 @@ def test_multichannel_binaural_static(test_info, in_fmt, out_fmt):
    if in_fmt in ["MONO", "STEREO"]:
        pytest.skip("MONO or STEREO to Binaural rendering unsupported")
-    run_renderer(in_fmt, out_fmt)
+    run_renderer(in_fmt, out_fmt, test_case_name=test_info.node.name)
 @pytest.mark.parametrize("trj_file", HR_TRAJECTORIES_TO_TEST)
@@ -274,12 +275,14 @@ def test_multichannel_binaural_headrotation(test_info, in_fmt, out_fmt, trj_file
        run_renderer(
            in_fmt,
            out_fmt,
+            test_case_name=test_info.node.name,
            trj_file=HR_TRAJECTORY_DIR.joinpath(f"{trj_file}.csv"),
        )
    else:
        run_renderer(
            in_fmt,
            out_fmt,
+            test_case_name=test_info.node.name,
            trj_file=HR_TRAJECTORY_DIR.joinpath(f"{trj_file}.csv"),
        )
@@ -319,7 +322,7 @@ def test_multichannel_binaural_headrotation_refvec_rotating(test_info, in_fmt, o
 @pytest.mark.parametrize("out_fmt", OUTPUT_FORMATS[2:])
 @pytest.mark.parametrize("in_fmt", INPUT_FORMATS_ISM)
 def test_ism(test_info, in_fmt, out_fmt):
-    run_renderer(in_fmt, out_fmt, in_meta_files=FORMAT_TO_METADATA_FILES[in_fmt])
+    run_renderer(in_fmt, out_fmt, test_case_name=test_info.node.name, in_meta_files=FORMAT_TO_METADATA_FILES[in_fmt])
 @pytest.mark.parametrize("out_fmt", OUTPUT_FORMATS_BINAURAL)
@@ -331,9 +334,9 @@ def test_ism_binaural_static(test_info, in_fmt, out_fmt):
        in_meta_files = None
    if out_fmt == "BINAURAL":
-        run_renderer(in_fmt, out_fmt, in_meta_files=in_meta_files)
+        run_renderer(in_fmt, out_fmt, test_case_name=test_info.node.name, in_meta_files=in_meta_files)
    else:
-        run_renderer(in_fmt, out_fmt, in_meta_files=in_meta_files)
+        run_renderer(in_fmt, out_fmt, test_case_name=test_info.node.name, in_meta_files=in_meta_files)
 @pytest.mark.parametrize("trj_file", HR_TRAJECTORIES_TO_TEST)
@@ -349,6 +352,7 @@ def test_ism_binaural_headrotation(test_info, in_fmt, out_fmt, trj_file):
        run_renderer(
            in_fmt,
            out_fmt,
+            test_case_name=test_info.node.name,
            trj_file=HR_TRAJECTORY_DIR.joinpath(f"{trj_file}.csv"),
            in_meta_files=in_meta_files,
        )
@@ -356,6 +360,7 @@ def test_ism_binaural_headrotation(test_info, in_fmt, out_fmt, trj_file):
        run_renderer(
            in_fmt,
            out_fmt,
+            test_case_name=test_info.node.name,
            trj_file=HR_TRAJECTORY_DIR.joinpath(f"{trj_file}.csv"),
            in_meta_files=in_meta_files,
        )
@@ -400,7 +405,7 @@ def test_ism_binaural_headrotation_refvec_rotating(test_info, in_fmt, out_fmt):
 @pytest.mark.parametrize("out_fmt", OUTPUT_FORMATS)
 @pytest.mark.parametrize("in_fmt", INPUT_FORMATS_MASA)
 def test_masa(test_info, in_fmt, out_fmt):
-    run_renderer(in_fmt, out_fmt, in_meta_files=FORMAT_TO_METADATA_FILES[in_fmt])
+    run_renderer(in_fmt, out_fmt, test_case_name=test_info.node.name, in_meta_files=FORMAT_TO_METADATA_FILES[in_fmt])
 """ Custom loudspeaker layouts """
@@ -409,7 +414,7 @@ def test_masa(test_info, in_fmt, out_fmt):
 @pytest.mark.parametrize("out_fmt", OUTPUT_FORMATS[2:])
 @pytest.mark.parametrize("in_layout", CUSTOM_LS_TO_TEST)
 def test_custom_ls_input(test_info, in_layout, out_fmt):
-    run_renderer(CUSTOM_LAYOUT_DIR.joinpath(f"{in_layout}.txt"), out_fmt)
+    run_renderer(CUSTOM_LAYOUT_DIR.joinpath(f"{in_layout}.txt"), out_fmt, test_case_name=test_info.node.name)
 @pytest.mark.parametrize("out_fmt", CUSTOM_LS_TO_TEST)
@@ -418,6 +423,7 @@ def test_custom_ls_output(test_info, in_fmt, out_fmt):
    run_renderer(
        in_fmt,
        CUSTOM_LAYOUT_DIR.joinpath(f"{out_fmt}.txt"),
+        test_case_name=test_info.node.name,
    )
@@ -427,6 +433,7 @@ def test_custom_ls_input_output(test_info, in_fmt, out_fmt):
    run_renderer(
        CUSTOM_LAYOUT_DIR.joinpath(f"{in_fmt}.txt"),
        CUSTOM_LAYOUT_DIR.joinpath(f"{out_fmt}.txt"),
+        test_case_name=test_info.node.name,
    )
@@ -436,6 +443,7 @@ def test_custom_ls_input_binaural(test_info, in_layout, out_fmt):
    run_renderer(
        CUSTOM_LAYOUT_DIR.joinpath(f"{in_layout}.txt"),
        out_fmt,
+        test_case_name=test_info.node.name,
    )
@@ -446,6 +454,7 @@ def test_custom_ls_input_binaural_headrotation(test_info, in_layout, out_fmt, tr
    run_renderer(
        CUSTOM_LAYOUT_DIR.joinpath(f"{in_layout}.txt"),
        out_fmt,
+        test_case_name=test_info.node.name,
        trj_file=HR_TRAJECTORY_DIR.joinpath(f"{trj_file}.csv"),
    )
@@ -459,6 +468,7 @@ def test_metadata(test_info, in_fmt, out_fmt):
    run_renderer(
        "META",
        out_fmt,
+        test_case_name=test_info.node.name,
        metadata_input=TEST_VECTOR_DIR.joinpath(f"{in_fmt}.txt"),
    )
@@ -470,11 +480,11 @@ def test_metadata(test_info, in_fmt, out_fmt):
 @pytest.mark.parametrize("in_fmt", ["MONO"])
 @pytest.mark.parametrize("non_diegetic_pan", ["0", "-30", "45", "90", "-90"])
 def test_non_diegetic_pan_static(test_info, in_fmt, out_fmt, non_diegetic_pan):
-    run_renderer(in_fmt, out_fmt, non_diegetic_pan=non_diegetic_pan)
+    run_renderer(in_fmt, out_fmt, test_case_name=test_info.node.name, non_diegetic_pan=non_diegetic_pan)
 @pytest.mark.parametrize("out_fmt", ["STEREO"])
 @pytest.mark.parametrize("in_fmt", ["ISM1"])
 @pytest.mark.parametrize("non_diegetic_pan", ["0", "-30", "45", "90", "-90"])
 def test_non_diegetic_pan_ism_static(test_info, in_fmt, out_fmt, non_diegetic_pan):
-    run_renderer(in_fmt, out_fmt, non_diegetic_pan=non_diegetic_pan)
+    run_renderer(in_fmt, out_fmt, test_case_name=test_info.node.name, non_diegetic_pan=non_diegetic_pan)
--- a/tests/renderer/utils.py
+++ b/tests/renderer/utils.py
@@ -29,6 +29,7 @@
 import logging
 import subprocess as sp
 import sys
+import os
 from pathlib import Path
 from tempfile import TemporaryDirectory
 from typing import Optional, Tuple, Dict
@@ -47,11 +48,10 @@ import pyaudio3dtools
 def test_info(request):
    return request
+def run_cmd(cmd, env=None):
-def run_cmd(cmd):
    logging.info(f"\nRunning command\n{' '.join(cmd)}\n")
    try:
-        sp.run(cmd, check=True, capture_output=True, text=True)
+        sp.run(cmd, check=True, capture_output=True, text=True, env=env)
    except sp.CalledProcessError as e:
        raise SystemError(
            f"Command returned non-zero exit status ({e.returncode}): {' '.join(e.cmd)}\n{e.stderr}\n{e.stdout}"
@@ -114,6 +114,7 @@ def run_renderer(
    output_path_base: str = OUTPUT_PATH_CUT,
    binary_suffix: str = "",
    is_comparetest: Optional[bool] = False,
+    test_case_name: Optional[str] = None,
 ) -> Tuple[np.ndarray, int]:
    """CuT creation with standalone renderer"""
    if trj_file is not None:
@@ -200,7 +201,12 @@ def run_renderer(
    if config_file is not None:
        cmd.extend(["-rc", str(config_file)])
-    run_cmd(cmd)
+    # Set env variables for UBSAN
+    env = os.environ.copy()
+    if test_case_name and "UBSAN_OPTIONS" in env.keys():
+        env["UBSAN_OPTIONS"] = env["UBSAN_OPTIONS"] + f",log_path=usan_log_{test_case_name}"
+    run_cmd(cmd, env)
    return pyaudio3dtools.audiofile.readfile(out_file)
@@ -208,20 +214,21 @@ def compare_renderer_vs_mergetarget(test_info, in_fmt, out_fmt, **kwargs):
    ref, ref_fs = run_renderer(
        in_fmt,
        out_fmt,
+        test_case_name=test_info.node.name,
        binary_suffix=BIN_SUFFIX_MERGETARGET,
        output_path_base=OUTPUT_PATH_REF,
        **kwargs,
    )
-    cut, cut_fs = run_renderer(in_fmt, out_fmt, **kwargs)
+    cut, cut_fs = run_renderer(in_fmt, out_fmt, test_case_name=test_info.node.name, **kwargs)
    check_BE(test_info, ref, ref_fs, cut, cut_fs)
 def compare_renderer_vs_pyscripts(test_info, in_fmt, out_fmt, **kwargs):
    ref, ref_fs = run_pyscripts(in_fmt, out_fmt, **kwargs)
-    cut, cut_fs = run_renderer(in_fmt, out_fmt, **kwargs)
+    cut, cut_fs = run_renderer(in_fmt, out_fmt, test_case_name=test_info.node.name, **kwargs)
    check_BE(test_info, ref, ref_fs, cut, cut_fs)
 def compare_renderer_args(test_info, in_fmt, out_fmt, ref_kwargs: Dict, cut_kwargs: Dict):
-    ref, ref_fs = run_renderer(in_fmt, out_fmt, **ref_kwargs)
+    ref, ref_fs = run_renderer(in_fmt, out_fmt, test_case_name=test_info.node.name, **ref_kwargs)
-    cut, cut_fs = run_renderer(in_fmt, out_fmt, **cut_kwargs)
+    cut, cut_fs = run_renderer(in_fmt, out_fmt, test_case_name=test_info.node.name, **cut_kwargs)
    check_BE(test_info, ref, ref_fs, cut, cut_fs)
\ No newline at end of file