Commit c9c49c1a authored by Sandesh Venkatesh's avatar Sandesh Venkatesh
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Fixes missing energy on stereo CNG frames at 24k4 kbps 

[x] Updated the Qs which were not handled properly in stereo_dft_generate_comfort_noise_fx when calculating cngNoiseLevel_upd
parent 39075d08

lib_dec/ivas_stereo_cng_dec.c

+3 −1
Original line number Diff line number Diff line
@@ -1086,10 +1086,12 @@ static void stereo_dft_generate_comfort_noise_fx( 
            ptr_tmp = cngNoiseLevel_upd + hFdCngCom->startBand;

            FOR( i = 0; i < shr( sub( st->last_L_frame, hFdCngCom->startBand ), 1 ); i++ )

            {

                q_sqrt = st->hFdCngDec->bandNoiseShape_exp;

                move16();

                tmp_16 = BASOP_Util_Divide1616_Scale( hStereoCng->xfade_frame_counter, hStereoCng->xfade_length, &q_div );

                tmp_16 = shl( tmp_16, q_div );

                tmp = Sqrt32( *ptr_cng++, &q_sqrt );

                tmp = L_shl( tmp, q_sqrt );

                tmp = L_shl( tmp, sub( add( q_cngNoiseLevel_upd, q_sqrt ), 31 ) );

                *ptr_tmp = L_add( Mpy_32_16_1( *ptr_tmp, tmp_16 ), Mpy_32_16_1( Mpy_32_16_1( tmp, sub( MAX_16, tmp_16 ) ), hStereoDft->scale_fx ) );

                move32();

                ptr_tmp++;