Commit 5c66dac3 authored by Sandesh Venkatesh's avatar Sandesh Venkatesh
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Fix for 3GPP issue 1763: Rate switching MASA with LTV signal has a couple of... 

Fix for 3GPP issue 1763: Rate switching MASA with LTV signal has a couple of worse spikes in BASOP decoder

Link #1763
parent 9d277af8

lib_com/modif_fs_fx.c

+2 −2
Original line number Diff line number Diff line
@@ -1759,8 +1759,8 @@ void interpolate_3_over_1_allpass_fx32( 
    {

        mem_temp = out[i]; // Qx

        move32();

        out[i] = L_sub_sat( Mpy_32_16_1( L_add_sat( mem[12], mem[11] ), 18768 ), Mpy_32_16_1( L_add_sat( mem_temp, mem[10] ), 2424 ) ); // Qx

        // 0.572769 in Q15 -> 18768, 0.074005 in Q15 -> 2424

        out[i] = L_sub_sat( Mpy_32_16_1( L_add_sat( mem[12], mem[11] ), 18768 ), Mpy_32_16_1( L_add_sat( mem_temp, mem[10] ), 2425 ) ); // Qx

        // 0.572769 in Q15 -> 18768, 0.074005 in Q15 -> 2425

        move32();

        mem[10] = mem[11]; // Qx

        move32();

lib_dec/swb_tbe_dec_fx.c

+2 −1
Original line number Diff line number Diff line
@@ -1181,8 +1181,9 @@ void ivas_wb_tbe_dec_fx( 
        }

        ELSE IF( EQ_32( st_fx->output_Fs, 48000 ) )

        {

            Scale_sig( hBWE_TD->mem_resamp_HB_fx, INTERP_3_1_MEM_LEN, sub( Qx, hBWE_TD->prev_Qx ) );

            Copy_Scale_sig_32_16( hBWE_TD->mem_resamp_HB_fx_32, hBWE_TD->mem_resamp_HB_fx, INTERP_3_1_MEM_LEN, sub( Qx, Q11 ) );

            ivas_interpolate_3_over_1_allpass_fx( synth, L_FRAME16k, upsampled_synth, hBWE_TD->mem_resamp_HB_fx );

            Copy_Scale_sig_16_32_no_sat( hBWE_TD->mem_resamp_HB_fx, hBWE_TD->mem_resamp_HB_fx_32, INTERP_3_1_MEM_LEN, sub( Q11, Qx ) );

            Copy( upsampled_synth, synth, L_FRAME48k );

        }

    }