Commit c9eb9105 authored by Sandesh Venkatesh's avatar Sandesh Venkatesh Committed by Manuel Jander
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Fix for 3GPP issue 1472: Precision issue with power spectrum causes different... 

Fix for 3GPP issue 1472: Precision issue with power spectrum causes different behavior with silent channels in MCT

Link #1472
parent e224d57c

lib_com/ivas_sns_com_fx.c

+10 −3
Original line number Diff line number Diff line
@@ -202,7 +202,14 @@ void sns_compute_scf_fx( 
      -Q6 is for division with FDNS_NPTS and -Q1 is to reduce Q by one */

    mean = W_shl_sat_l( sum, -Q7 );                                   // q_out

    nf = Mpy_32_32( mean, 214748 /* powf( 10.0f, -4.0f ) in Q31 */ ); // q_out

    nf = L_max( nf, L_shl( 256, sub( q_out, 40 ) ) /* powf( 2.0f, -32.0f ) in Q40 */ ); // q_out



    IF( LE_32( nf, L_shl_sat( 256, sub( q_out, 40 ) ) ) ) /* powf( 2.0f, -32.0f ) in Q40 */

    {

        nf = 256;

        move32();

        q_out = 40;

        move16();

    }



    FOR( i = 0; i < FDNS_NPTS; i++ )

    {