Commit 67c66d50 authored by malenov's avatar malenov
Browse files

prevent division by extremely low energy value in SWB TBE

parent 494a317a

lib_com/options.h

+1 −0
Original line number Diff line number Diff line
@@ -179,6 +179,7 @@ 
#define NONBE_FIX_1128_OSBA_EXT_OUTPUT_ORDER                  /* FhG: issue 1128: set output ambisonics order to input order for EXT output */

#define NONBE_FIX_1052_SBA_EXT_FIX                            /* VA: SBA external output support fix - do not overwrite "output_config" parameter */

#define NONBE_FIX_1130_DIV_ZERO_LEV_DUR                       /* VA: issue 1130: avoid div by zero in L-D by thresholding R[0] to a min value of 100.0 */

#define NONBE_FIX_1132_THRESHOLD_POW_IN_SWB_TBE               /* VA: issue 1132: prevent division by extremely low energy value in SWB TBE */



/* ##################### End NON-BE switches ########################### */

lib_dec/swb_tbe_dec.c

+10 −1
Original line number Diff line number Diff line
@@ -1059,6 +1059,7 @@ void swb_tbe_dec( 
        }



        mvr2r( shaped_shb_excitationTemp, &shaped_shb_excitation[L_SHB_LAHEAD], L_FRAME16k );



        prev_pow = sum2_f( shaped_shb_excitation, L_SHB_LAHEAD + 10 );

        curr_pow = sum2_f( shaped_shb_excitation + L_SHB_LAHEAD + 10, L_SHB_LAHEAD + 10 );
@@ -1067,6 +1068,14 @@ void swb_tbe_dec( 
            curr_pow *= 0.25;

        }



#ifdef NONBE_FIX_1132_THRESHOLD_POW_IN_SWB_TBE

        if ( st->element_mode > EVS_MONO )

        {

            /* prevent too low values of energy */

            prev_pow += 1.0f;

            curr_pow += 1.0f;

        }

#endif

        if ( prev_pow == 0 ) 

        {

            scale = 0;