Fix for 3GPP issue 825: Missing synthesis when switching to CNG (24.4kbps) (bcf07dca) · Commits · SA4 / Audio / IVAS BASOP

lib_dec/acelp_core_dec_ivas_fx.c

+0 −65

Original line number	Diff line number	Diff line
		@@ -194,13 +194,6 @@ ivas_error acelp_core_dec_ivas_fx(
		}
		#endif
		ApplyFdCng_ivas_fx( NULL, 0, NULL, 0, NULL, NULL, NULL, st, 0, 0 );

		IF( st->hFdCngDec->hFdCngCom->cngNoiseLevelExp < 0 )
		{
		Scale_sig32( st->hFdCngDec->hFdCngCom->cngNoiseLevel, FFTCLDFBLEN, st->hFdCngDec->hFdCngCom->cngNoiseLevelExp );
		st->hFdCngDec->hFdCngCom->cngNoiseLevelExp = 0;
		move16();
		}
		}
		ELSE
		{
		@@ -698,26 +691,7 @@ ivas_error acelp_core_dec_ivas_fx(
		move32();
		}
		#endif
		Word16 new_sidNoiseEstExp = 31 - Q4;
		move16();
		Scale_sig32( st->hFdCngDec->hFdCngCom->sidNoiseEstLp, NPART, sub( st->hFdCngDec->hFdCngCom->sidNoiseEstExp, new_sidNoiseEstExp ) );
		Scale_sig32( st->hFdCngDec->hFdCngCom->sidNoiseEst, NPART, sub( st->hFdCngDec->hFdCngCom->sidNoiseEstExp, new_sidNoiseEstExp ) );
		st->hFdCngDec->hFdCngCom->sidNoiseEstExp = new_sidNoiseEstExp;
		move16();
		Word16 new_cngNoiseLevelExp = 31 - Q4;
		move16();
		Scale_sig32( st->hFdCngDec->hFdCngCom->cngNoiseLevel, FFTCLDFBLEN, st->hFdCngDec->hFdCngCom->cngNoiseLevelExp - new_cngNoiseLevelExp );
		st->hFdCngDec->hFdCngCom->cngNoiseLevelExp = new_cngNoiseLevelExp;
		move16();

		ApplyFdCng_ivas_fx( psyn_fx, st->Q_syn, NULL, 0, realBuffer_fx, imagBuffer_fx, NULL, st, 0, ( st->coder_type == AUDIO && !st->GSC_noisy_speech ) );

		IF( st->hFdCngDec->hFdCngCom->cngNoiseLevelExp < 0 )
		{
		Scale_sig32( st->hFdCngDec->hFdCngCom->cngNoiseLevel, FFTCLDFBLEN, st->hFdCngDec->hFdCngCom->cngNoiseLevelExp );
		st->hFdCngDec->hFdCngCom->cngNoiseLevelExp = 0;
		move16();
		}
		}

		IF( !read_sid_info )
		@@ -1547,30 +1521,9 @@ ivas_error acelp_core_dec_ivas_fx(
		IF( NE_16( st->element_mode, IVAS_CPE_TD ) && !st->cng_ism_flag )
		{
		/Noise estimate/

		Scale_sig32( st->hFdCngDec->hFdCngCom->cngNoiseLevel, FFTCLDFBLEN, sub( st->hFdCngDec->hFdCngCom->cngNoiseLevelExp, Q27 ) );
		st->hFdCngDec->hFdCngCom->cngNoiseLevelExp = 31 - Q4; // Q4
		move16();

		Scale_sig32( st->hFdCngDec->hFdCngCom->sidNoiseEst, NPART, sub( st->hFdCngDec->hFdCngCom->sidNoiseEstExp, Q27 ) );
		Scale_sig32( st->hFdCngDec->hFdCngCom->sidNoiseEstLp, NPART, sub( st->hFdCngDec->hFdCngCom->sidNoiseEstExp, Q27 ) );
		st->hFdCngDec->hFdCngCom->sidNoiseEstExp = 31 - Q4; // Q4
		move16();
		/==========================================================/
		ApplyFdCng_ivas_fx( psyn_fx, st->Q_syn, NULL, 0, realBuffer_fx, imagBuffer_fx, NULL, st, 0, ( st->coder_type == AUDIO && !st->GSC_noisy_speech ) );
		/==========================================================/
		IF( st->hFdCngDec->partNoiseShape_exp < 0 )
		{
		Scale_sig32( st->hFdCngDec->partNoiseShape, NPART, st->hFdCngDec->partNoiseShape_exp );
		st->hFdCngDec->partNoiseShape_exp = 0;
		move16();
		}
		IF( st->hFdCngDec->hFdCngCom->cngNoiseLevelExp < 0 )
		{
		Scale_sig32( st->hFdCngDec->hFdCngCom->cngNoiseLevel, FFTCLDFBLEN, st->hFdCngDec->hFdCngCom->cngNoiseLevelExp );
		st->hFdCngDec->hFdCngCom->cngNoiseLevelExp = 0;
		move16();
		}
		}

		IF( !st->cna_dirac_flag )
		@@ -1656,24 +1609,6 @@ ivas_error acelp_core_dec_ivas_fx(
		IF( ( st->idchan == 0 ) && ( EQ_16( nchan_out, 2 ) \|\| ( st->core_brate != FRAME_NO_DATA && NE_32( st->core_brate, SID_2k40 ) ) ) )
		{
		ApplyFdCng_ivas_fx( psyn_fx, st->Q_syn, NULL, 0, realBuffer_fx, imagBuffer_fx, NULL, st, 0, ( st->coder_type == AUDIO && !st->GSC_noisy_speech ) );
		IF( st->hFdCngDec->partNoiseShape_exp < 0 )
		{
		Scale_sig32( st->hFdCngDec->partNoiseShape, NPART, -st->hFdCngDec->partNoiseShape_exp );
		st->hFdCngDec->partNoiseShape_exp = 0;
		move16();
		}
		IF( st->hFdCngDec->partNoiseShape_exp < 0 )
		{
		Scale_sig32( st->hFdCngDec->partNoiseShape, NPART, st->hFdCngDec->partNoiseShape_exp );
		st->hFdCngDec->partNoiseShape_exp = 0;
		move16();
		}
		IF( st->hFdCngDec->hFdCngCom->cngNoiseLevelExp < 0 )
		{
		Scale_sig32( st->hFdCngDec->hFdCngCom->cngNoiseLevel, FFTCLDFBLEN, st->hFdCngDec->hFdCngCom->cngNoiseLevelExp );
		st->hFdCngDec->hFdCngCom->cngNoiseLevelExp = 0;
		move16();
		}
		}
		}
		}

lib_dec/fd_cng_dec_fx.c

+100 −58

Original line number	Diff line number	Diff line
		@@ -1383,16 +1383,26 @@ Word16 ApplyFdCng_ivas_fx(
		IF( NE_16( s2, -( WORD32_BITS - 1 ) ) )
		{
		s = sub( *cngNoiseLevel_exp, add( hFdCngDec->bandNoiseShape_exp, s2 ) );
		Word16 e_shift = 0;
		IF( s > 0 )
		{
		Word16 q_norm = L_norm_arr( &cngNoiseLevel[j], sub( FFTCLDFBLEN, j ) );
		IF( GT_16( s, q_norm ) )
		{
		scale_sig32( cngNoiseLevel, j, sub( q_norm, s ) );
		e_shift = sub( s, q_norm );
		}
		}
		FOR( ; k < hFdCngCom->npart; k++ )
		{
		FOR( ; j <= hFdCngCom->part[k]; j++ )
		{
		cngNoiseLevel[j] = L_shl( cngNoiseLevel[j], s );
		cngNoiseLevel[j] = L_shl( cngNoiseLevel[j], sub( s, e_shift ) );
		move32();
		}
		}

		*cngNoiseLevel_exp = add( hFdCngDec->bandNoiseShape_exp, s2 );
		*cngNoiseLevel_exp = add( add( hFdCngDec->bandNoiseShape_exp, s2 ), e_shift );
		move16();
		}
		}
		@@ -2410,14 +2420,16 @@ void perform_noise_estimation_dec_ivas_fx(
		Word32 temp, ftemp, delta, L_tmp;
		Word16 e_temp, wght, periodog_exp;
		Word32 enr, enr_tot, enr_tot0;
		Word16 enr_ratio, alpha;
		Word16 enr_e, enr_ratio, alpha;
		Word32 *msPeriodog;
		Word32 *msNoiseEst;
		Word32 *reIter;
		Word32 rescale_fac = 0;
		Word64 W_tmp;
		Word16 tmp_s, tmp_q, min_q = 31;
		Word16 exp_flag = 0;
		Word16 q_shift;
		Word32 max_l;
		Word16 norm_shift;
		#ifdef IVAS_CODE_CNG
		PMT( "lots of code related to IVAS needs to be done " )
		#endif
		@@ -2639,63 +2651,48 @@ void perform_noise_estimation_dec_ivas_fx(
		enr_tot0 = L_add_sat( L_shr( sum32_fx( msNoiseEst, npart ), sub( hFdCngDec->msPeriodog_exp, hFdCngDec->msNoiseEst_exp ) ), 1 );
		}

		/* update short-term periodogram on larger partitions */
		maximum_32_fx( &msPeriodog[CNA_ACT_DN_LARGE_PARTITION], sub( npart, CNA_ACT_DN_LARGE_PARTITION ), &max_l );
		q_shift = sub( hFdCngDec->hFdCngCom->periodog_exp, hFdCngDec->msPeriodog_ST_exp );
		norm_shift = norm_l( max_l );
		test();
		IF( !( NE_16( L_frame, last_L_frame ) \|\| LE_32( last_core_brate, SID_2k40 ) ) )
		IF( max_l && GT_16( q_shift, norm_shift ) )
		{
		IF( GT_16( hFdCngDec->hFdCngCom->periodog_exp, hFdCngDec->msPeriodog_ST_exp ) )
		{
		exp_flag = 1;
		scale_sig32( hFdCngDec->msPeriodog_ST_fx, NPART_SHAPING, sub( norm_shift, q_shift ) );
		hFdCngDec->msPeriodog_ST_exp = sub( hFdCngDec->msPeriodog_ST_exp, sub( norm_shift, q_shift ) );
		move16();
		}
		ELSE
		{
		exp_flag = 0;
		q_shift = norm_shift;
		move16();
		}
		}

		/* update short-term periodogram on larger partitions */
		FOR( p = CNA_ACT_DN_LARGE_PARTITION; p < npart; p++ )
		{
		test();
		q_shift = sub( hFdCngDec->hFdCngCom->periodog_exp, hFdCngDec->msPeriodog_ST_exp );
		IF( NE_16( L_frame, last_L_frame ) \|\| LE_32( last_core_brate, SID_2k40 ) )
		{
		/* core Fs has changed or last frame was SID/NO_DATA -> re-initialize short-term periodogram */
		hFdCngDec->msPeriodog_ST_fx[p] = msPeriodog[p];
		move32();
		hFdCngDec->msPeriodog_ST_exp = hFdCngDec->hFdCngCom->periodog_exp;
		move16();
		}
		ELSE
		{
		temp = msPeriodog[p];
		move32();
		IF( exp_flag )
		{
		hFdCngDec->msPeriodog_ST_fx[p] = L_shr( hFdCngDec->msPeriodog_ST_fx[p], sub( hFdCngDec->hFdCngCom->periodog_exp, hFdCngDec->msPeriodog_ST_exp ) );
		hFdCngDec->msPeriodog_ST_fx[p] = L_shl( msPeriodog[p], q_shift );
		move32();
		}
		ELSE
		{
		temp = L_shr( temp, sub( hFdCngDec->msPeriodog_ST_exp, hFdCngDec->hFdCngCom->periodog_exp ) );
		}
		#ifdef IVAS_ENH32_CADENCE_CHANGES
		hFdCngDec->msPeriodog_ST_fx[p] = Madd_32_16( Mpy_32_16_1( hFdCngDec->msPeriodog_ST_fx[p], ST_PERIODOG_FACT_Q15 ), temp, sub( MAX_16, ST_PERIODOG_FACT_Q15 ) );
		temp = L_shl( msPeriodog[p], q_shift );
		hFdCngDec->msPeriodog_ST_fx[p] = Madd_32_16( Mpy_32_16_1( hFdCngDec->msPeriodog_ST_fx[p], ST_PERIODOG_FACT_Q15 ), temp, MAX_16 - ST_PERIODOG_FACT_Q15 );
		#else
		hFdCngDec->msPeriodog_ST_fx[p] = L_add( Mpy_32_16_1( hFdCngDec->msPeriodog_ST_fx[p], ST_PERIODOG_FACT_Q15 ), Mpy_32_16_1( temp, sub( MAX_16, ST_PERIODOG_FACT_Q15 ) ) );
		#endif
		move32();
		}
		}
		test();
		IF( !( NE_16( L_frame, last_L_frame ) \|\| LE_32( last_core_brate, SID_2k40 ) ) )
		{
		IF( exp_flag )
		maximum_32_fx( hFdCngDec->msPeriodog_ST_fx, NPART_SHAPING, &max_l );
		IF( max_l )
		{
		hFdCngDec->msPeriodog_ST_exp = hFdCngDec->hFdCngCom->periodog_exp;
		q_shift = sub( norm_l( max_l ), 2 );
		scale_sig32( hFdCngDec->msPeriodog_ST_fx, NPART_SHAPING, q_shift );
		hFdCngDec->msPeriodog_ST_exp = sub( hFdCngDec->msPeriodog_ST_exp, q_shift );
		move16();
		}
		}

		/* core Fs has changed -> partitions have changed -> re-calculate long-term periodogram */
		/* part L_FRAME16k L_FRAME */
		@@ -2755,30 +2752,35 @@ void perform_noise_estimation_dec_ivas_fx(
		IF( NE_16( hFdCngDec->first_cna_noise_update_cnt, 0 ) )
		{
		alpha = Inv16( add( hFdCngDec->first_cna_noise_update_cnt, 1 ), &e );
		IF( LT_16( e, 0 ) )
		alpha = shl_sat( alpha, e ); // Q15
		maximum_32_fx( msPeriodog, npart, &max_l );
		q_shift = sub( hFdCngDec->hFdCngCom->periodog_exp, hFdCngDec->msNoiseEst_exp );
		norm_shift = norm_l( max_l );
		test();
		IF( max_l && GT_16( q_shift, norm_shift ) )
		{
		alpha = shr( alpha, negate( e ) ); // Q15
		scale_sig32( msNoiseEst, NPART_SHAPING, sub( norm_shift, q_shift ) );
		hFdCngDec->msNoiseEst_exp = sub( hFdCngDec->msNoiseEst_exp, sub( norm_shift, q_shift ) );
		move16();
		q_shift = norm_shift;
		move16();
		}
		FOR( p = 0; p < npart; p++ )
		{
		temp = msPeriodog[p];
		move32();
		temp = L_shr( temp, sub( hFdCngDec->msNoiseEst_exp, hFdCngDec->msPeriodog_exp ) );
		temp = L_shl( msPeriodog[p], q_shift );
		#ifdef IVAS_ENH32_CADENCE_CHANGES
		msNoiseEst[p] = Madd_32_16( Mpy_32_16_1( msNoiseEst[p], sub( shl_sat( 1, sub( 15, e ) ), alpha ) ), temp, alpha );
		msNoiseEst[p] = Madd_32_16( Mpy_32_16_1( msNoiseEst[p], sub( MAX_16, alpha ) ), temp, alpha );
		#else
		msNoiseEst[p] = L_add( Mpy_32_16_1( msNoiseEst[p], sub( shl_sat( 1, sub( 15, e ) ), alpha ) ), Mpy_32_16_1( temp, alpha ) );
		msNoiseEst[p] = L_add( Mpy_32_16_1( msNoiseEst[p], sub( MAX_16, alpha ) ), Mpy_32_16_1( temp, alpha ) );
		#endif
		move32();
		}
		}
		ELSE
		{
		FOR( p = 0; p < npart; p++ )
		{
		msNoiseEst[p] = L_shr( msPeriodog[p], sub( hFdCngDec->msNoiseEst_exp, hFdCngDec->msPeriodog_exp ) );
		move32();
		}
		Copy32( msPeriodog, msNoiseEst, npart );
		scale_sig32( &msNoiseEst[npart], sub( NPART_SHAPING, npart ), sub( hFdCngDec->msNoiseEst_exp, hFdCngDec->msPeriodog_exp ) );
		hFdCngDec->msNoiseEst_exp = hFdCngDec->msPeriodog_exp;
		}

		/* check, if we reached the required number of first CNA noise update frames */
		@@ -2863,7 +2865,7 @@ void perform_noise_estimation_dec_ivas_fx(
		/* energy significantly decreases in one of the larger partitions during active frames -> downward update */
		FOR( p = CNA_ACT_DN_LARGE_PARTITION; p < npart; p++ )
		{
		L_tmp = L_shr( hFdCngDec->msPeriodog_ST_fx[p], sub( hFdCngDec->msNoiseEst_exp, hFdCngDec->msPeriodog_ST_exp ) );
		L_tmp = L_shr_sat( hFdCngDec->msPeriodog_ST_fx[p], sub( hFdCngDec->msNoiseEst_exp, hFdCngDec->msPeriodog_ST_exp ) );
		IF( LT_32( L_tmp, msNoiseEst[p] ) )
		{
		#ifdef IVAS_ENH32_CADENCE_CHANGES
		@@ -2895,7 +2897,8 @@ void perform_noise_estimation_dec_ivas_fx(
		move16();
		enr = msPeriodog[p];
		move32();
		temp = L_shr( enr, sub( hFdCngDec->msNoiseEst_exp, hFdCngDec->msPeriodog_exp ) );
		enr_e = hFdCngDec->msPeriodog_exp;
		move16();
		alpha = 31130; // 0.95f in Q15
		move16();
		/* bandwidth increased -> do fast re-initilization */
		@@ -2908,16 +2911,29 @@ void perform_noise_estimation_dec_ivas_fx(
		alpha = shr( alpha, negate( i_e ) ); // Q15
		}
		}
		ELSE IF( LT_32( temp, *ptr_per ) && EQ_16( part[p], 1 ) )
		ELSE IF( ( BASOP_Util_Cmp_Mant32Exp( enr, enr_e, *ptr_per, hFdCngDec->msNoiseEst_exp ) < 0 ) && EQ_16( part[p], 1 ) )
		{
		/* faster downward update for single-bin partitions */
		alpha = 26214; // 0.8f in Q15
		move16();
		}
		ELSE IF( GT_32( temp, L_shl( ( *ptr_per ), 1 ) ) )
		ELSE IF( BASOP_Util_Cmp_Mant32Exp( enr, enr_e, *ptr_per, add( hFdCngDec->msNoiseEst_exp, 1 ) ) > 0 )
		{
		/* prevent abrupt upward updates */
		temp = L_shl( ( *ptr_per ), 1 );
		test();
		IF( ( norm_l( ptr_per ) == 0 ) && ptr_per )
		{
		enr = *ptr_per;
		scale_sig32( msNoiseEst, NPART_SHAPING, -1 );
		hFdCngDec->msNoiseEst_exp = add( hFdCngDec->msNoiseEst_exp, 1 );
		move16();
		}
		ELSE
		{
		enr = L_shl( *ptr_per, 1 );
		}
		enr_e = hFdCngDec->msNoiseEst_exp;
		move16();
		}

		/* IIR smoothing */
		@@ -2938,9 +2954,27 @@ void perform_noise_estimation_dec_ivas_fx(
		move32();
		}
		#ifdef IVAS_ENH32_CADENCE_CHANGES
		ptr_per = Madd_32_16( ( ptr_per ), temp, sub( MAX_16, alpha ) );
		if ( enr )
		{
		q_shift = sub( enr_e, hFdCngDec->msNoiseEst_exp );
		norm_shift = norm_l( enr );
		if ( LE_16( q_shift, norm_shift ) )
		{
		enr = L_shl( enr, q_shift );
		move32();
		}
		else
		{
		enr_e = sub( enr_e, norm_shift );
		enr = L_shl( enr, norm_shift );
		scale_sig32( msNoiseEst, NPART_SHAPING, sub( norm_shift, q_shift ) );
		hFdCngDec->msNoiseEst_exp = sub( hFdCngDec->msNoiseEst_exp, sub( norm_shift, q_shift ) );
		move16();
		}
		}
		ptr_per = Madd_32_16( ( ptr_per ), enr, sub( MAX_16, alpha ) );
		#else
		ptr_per = L_add( ( ptr_per ), Mpy_32_16_1( temp, sub( MAX_16, alpha ) ) );
		ptr_per = L_add( ( ptr_per ), Mpy_32_16_1( enr, sub( MAX_16, alpha ) ) );
		#endif
		ptr_per++;
		}
		@@ -2951,6 +2985,14 @@ void perform_noise_estimation_dec_ivas_fx(
		}
		}
		}
		maximum_32_fx( msNoiseEst, NPART_SHAPING, &max_l );
		if ( max_l )
		{
		q_shift = sub( norm_l( max_l ), 2 );
		scale_sig32( msNoiseEst, NPART_SHAPING, q_shift );
		hFdCngDec->msNoiseEst_exp = sub( hFdCngDec->msNoiseEst_exp, q_shift );
		move16();
		}

		Copy32( msNoiseEst, hFdCngDec->msPsd_fx, npart );
		hFdCngDec->msPsd_exp_fft = hFdCngDec->msNoiseEst_exp;

lib_dec/ivas_core_dec.c

+0 −11

Original line number	Diff line number	Diff line
		@@ -531,10 +531,6 @@ ivas_error ivas_core_dec_fx(

		IF( st->hFdCngDec != NULL )
		{
		Scale_sig32( st->hFdCngDec->msNoiseEst, NPART_SHAPING, sub( st->hFdCngDec->msNoiseEst_exp, 27 ) );
		st->hFdCngDec->msNoiseEst_exp = 27;
		move16();

		Scale_sig( st->hFdCngDec->hFdCngCom->A_cng, add( M, 1 ), sub( norm_s( sub( st->hFdCngDec->hFdCngCom->A_cng[0], 1 ) ), 3 ) );
		}

		@@ -613,9 +609,6 @@ ivas_error ivas_core_dec_fx(
		/* TCX decoder */
		Scale_sig( st->hPFstat->mem_stp, L_SUBFR, -Qsyn_temp );
		Scale_sig( st->hPFstat->mem_pf_in, L_SUBFR, -Qsyn_temp );
		Scale_sig32( st->hFdCngDec->msNoiseEst, NPART_SHAPING, sub( st->hFdCngDec->msNoiseEst_exp, 27 ) );
		st->hFdCngDec->msNoiseEst_exp = 27;
		move16();
		Scale_sig( st->hHQ_core->old_out_LB_fx, L_FRAME32k, -st->hHQ_core->Q_old_wtda_LB );
		Scale_sig( st->hHQ_core->old_out_fx, L_FRAME48k, -st->hHQ_core->Q_old_wtda );

		@@ -822,10 +815,6 @@ ivas_error ivas_core_dec_fx(
		{
		IF( NE_16( sts[n]->last_core_bfi, ACELP_CORE ) )
		{
		Scale_sig32( sts[n]->hFdCngDec->hFdCngCom->cngNoiseLevel, FFTCLDFBLEN, sub( sts[n]->hFdCngDec->hFdCngCom->cngNoiseLevelExp, 27 ) );
		sts[n]->hFdCngDec->hFdCngCom->cngNoiseLevelExp = 27;
		move16();

		TonalMdctConceal_whiten_noise_shape_ivas_fx( sts[n], L_FRAME16k, ON_FIRST_GOOD_FRAME );
		}
		}

lib_dec/ivas_stereo_cng_dec.c

+80 −42

File changed.

Preview size limit exceeded, changes collapsed.

lib_dec/ivas_stereo_mdct_core_dec_fx.c

+0 −11

Original line number	Diff line number	Diff line
		@@ -1053,17 +1053,6 @@ static void run_min_stats_fx(
		test();
		IF( will_estimate_noise_on_channel[0] \|\| will_estimate_noise_on_channel[1] \|\| st->bfi )
		{
		// for ( int p = 0; p < FFTCLDFBLEN; p++ )
		{
		// st->hFdCngDec->hFdCngCom->cngNoiseLevel[p] = L_shr ( st->hFdCngDec->hFdCngCom->cngNoiseLevel[p], sub( 28, st->hFdCngDec->hFdCngCom->cngNoiseLevelExp ) );
		}
		Scale_sig32( st->hFdCngDec->hFdCngCom->cngNoiseLevel, FFTCLDFBLEN, sub( st->hFdCngDec->hFdCngCom->cngNoiseLevelExp, 28 ) );
		st->hFdCngDec->hFdCngCom->cngNoiseLevelExp = 31 - Q3; // Q3
		Scale_sig32( st->hFdCngDec->msNoiseEst, NPART_SHAPING, sub( st->hFdCngDec->msNoiseEst_exp, 27 ) );
		st->hFdCngDec->msNoiseEst_exp = 27;
		// Scale_sig32(power_spec, L_FRAME16k, sub(power_spec_e, 31));
		// power_spec_e = 31;
		/=================================================/
		Word32 *arr_tmp;
		IF( st->bfi )
		{