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lib_com/options.h
View file @ 3fd189ab
......@@ -167,6 +167,7 @@
#define NONBE_FIX_1261_MASA_EXT_META_JBM /* Nokia: issue #1261: MASA metadata EXT output delay buffer init in JBM */
#define NONBE_FIX_1143_MASA_BRSW /* Nok: Fix for issue 1143: MSAN use of uninitialized value in masa decoding to binaural with dtx bitrate switching and 5 % FER */
#define NONBE_FIX_1220_OMASA_JBM_EXT_USAN /* Nokia: fix issue 1220 OMASA EXT JBM USAN, also fix similar cases of free to avoid future problems */
#define NONBE_FIX_1376_MDCT_CONCEALMENT /* FhG: fix concealment artifact in MDCT Stereo with DTX, in case transition frame gets lost */
/* #################### End BASOP porting switches ############################ */
......
lib_dec/ivas_mdct_core_dec.c
View file @ 3fd189ab
......@@ -1116,7 +1116,17 @@ void ivas_mdct_core_tns_ns(
decoder_tcx_tns( st, L_frame_global[ch], L_spec[ch], L_frame[ch], L_frameTCX[ch], &x[ch][k][0], fUseTns[ch][k], &tnsData[ch][k], bfi, k, 1 );
sns_shape_spectrum( x[ch][k], st->hTcxCfg->psychParamsCurrent, &sns_int_scf[0], st->hTcxCfg->psychParamsCurrent->nBins );
#ifdef NONBE_FIX_1376_MDCT_CONCEALMENT
/*
2025-09-07, mul:
in case of PLC, applying SNS up to L_spec might not be enough: In case the transition frame from DTX after an inactive period is lost, L_spec is assumed to represent a regular TCX frame,
however, this frame is nevertheless acting as an transition frame as also visible in L_frameTCX; thus, the safer approach to prevent high frequency artifacts is to apply the SNS up to L_frameTCX;
in case this is not necessary, x[] is filled with zeros, and the multiplication is not causing any additional harm
*/
v_multc( x[ch][k] + st->hTcxCfg->psychParamsCurrent->nBins, sns_int_scf[FDNS_NPTS - 1], x[ch][k] + st->hTcxCfg->psychParamsCurrent->nBins, max( L_spec[ch], L_frameTCX[ch] ) - st->hTcxCfg->psychParamsCurrent->nBins );
#else
v_multc( x[ch][k] + st->hTcxCfg->psychParamsCurrent->nBins, sns_int_scf[FDNS_NPTS - 1], x[ch][k] + st->hTcxCfg->psychParamsCurrent->nBins, L_spec[ch] - st->hTcxCfg->psychParamsCurrent->nBins );
#endif
decoder_tcx_tns( st, L_frame_global[ch], L_spec[ch], L_frame[ch], L_frameTCX[ch], &x[ch][k][0], fUseTns[ch][k], &tnsData[ch][k], bfi, k, 0 );
}
......