Commit 92576ece authored by Sandesh Venkatesh's avatar Sandesh Venkatesh
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Fix for 3GPP issue 1424: Audible differences in the CNG generated at SBA 32... 

Fix for 3GPP issue 1424: Audible differences in the CNG generated at SBA 32 kbps and 16.4 kbps, DTX ON

Link #1424
parent ac8a0328

lib_enc/ivas_front_vad_fx.c

+35 −4
Original line number Diff line number Diff line
@@ -666,14 +666,45 @@ ivas_error front_vad_spar_fx( 


        old_pitch = st->pitch[1];

        move16();

        Scale_sig( wsp_fx, 368, sub( Q8, Q_inp_12k8 ) ); // Q8

        pitch_ol_ivas_fx( st->pitch, st->voicing_fx, &st->old_pitch, &st->old_corr_fx, corr_shift_fx, &st->old_thres_fx, &st->delta_pit, st->old_wsp2_fx, wsp_fx, st->mem_decim2_fx, relE_fx, st->clas, st->input_bwidth, st->Opt_SC_VBR, Q8 );

        Word16 shift, Q_wsp;

        Word16 shift1 = norm_arr( old_wsp_fx, L_WSP_MEM );

        Word16 shift2 = norm_arr( wsp_fx, L_WSP - L_WSP_MEM );

        maximum_abs_16_fx( old_wsp_fx, L_WSP_MEM, &shift );

        if ( !shift )

        {

            shift1 = Q15;

            move16();

        }

        maximum_abs_16_fx( wsp_fx, L_WSP - L_WSP_MEM, &shift );

        if ( !shift )

        {

            shift2 = Q15;

            move16();

        }



        shift = s_min( Q15, s_min( add( Q_inp_12k8, shift1 ), add( Q_inp_12k8, shift2 ) ) );

        shift = s_min( shift, add( norm_arr( st->mem_decim2_fx, 3 ), st->Q_old_wsp2 ) );

        shift = s_min( shift, add( norm_arr( st->old_wsp2_fx, ( L_WSP_MEM - L_INTERPOL ) / OPL_DECIM ), st->Q_old_wsp2 ) );



        scale_sig( old_wsp_fx, L_WSP_MEM, sub( shift, Q_inp_12k8 ) );

        scale_sig( wsp_fx, L_WSP - L_WSP_MEM, sub( shift, Q_inp_12k8 ) );



        Q_wsp = shift;

        move16();



        scale_sig( st->mem_decim2_fx, 3, sub( Q_wsp, st->Q_old_wsp2 ) );                                    // Q( mem_decim ) = Q( old_wsp2 )

        scale_sig( st->old_wsp2_fx, ( L_WSP_MEM - L_INTERPOL ) / OPL_DECIM, sub( Q_wsp, st->Q_old_wsp2 ) ); // Q_wsp



        st->Q_old_wsp2 = Q_wsp;

        move16();



        pitch_ol_ivas_fx( st->pitch, st->voicing_fx, &st->old_pitch, &st->old_corr_fx, corr_shift_fx, &st->old_thres_fx, &st->delta_pit, st->old_wsp2_fx, wsp_fx, st->mem_decim2_fx, relE_fx, st->clas, st->input_bwidth, st->Opt_SC_VBR, Q_wsp );



        /* Updates for adaptive lag window memory */

        st->old_pitch_la = st->pitch[2]; /* Q0 */

        move16();

        Scale_sig( wsp_fx, 368, Q9 - Q8 ); /* Q9 */

        StableHighPitchDetect_ivas_fx( &flag_spitch, st->pitch, st->voicing_fx, wsp_fx, st->localVAD, &st->voicing_sm_fx, &st->voicing0_sm_fx, &st->LF_EnergyRatio_sm_fx, &st->predecision_flag, &st->diff_sm_fx, &st->energy_sm_fx, Q12, st->lgBin_E_fx );



        StableHighPitchDetect_ivas_fx( &flag_spitch, st->pitch, st->voicing_fx, wsp_fx, st->localVAD, &st->voicing_sm_fx, &st->voicing0_sm_fx, &st->LF_EnergyRatio_sm_fx, &st->predecision_flag, &st->diff_sm_fx, &st->energy_sm_fx, Q_wsp, st->lgBin_E_fx );

        IF( st->hSpMusClas != NULL )

        {

            Word16 dummy_int;