Commit 69d1b540 authored by TYAGIRIS's avatar TYAGIRIS
Browse files

reduce precision of normalized response to avoid magnitude overshoot

parent 0d6141c3

lib_com/ivas_spar_com_fx.c

+8 −6
Original line number Diff line number Diff line
@@ -4265,6 +4265,7 @@ void ivas_get_spar_md_from_dirac_enc_fx( 


#ifdef NONBE_FIX_1748_SPAR_DIV_OPT

                    Word16 num_ch_order, norm_t, tmp_e;

                    Word32 tmp_norm_out;

#else

                    Word16 num_ch_order, hoa2_ch_order;

#endif
@@ -4341,9 +4342,9 @@ void ivas_get_spar_md_from_dirac_enc_fx( 
                    {

                        FOR( ch = 1; ch < foa_ch; ch++ )

                        {

                            response_avg_fx[ch] = BASOP_Util_Divide3232_Scale_newton( response_avg_fx[ch], L_max( norm_fx, response_avg_fx[ch] ), &tmp_e ); // Q31 - tmp_e

                            move32();

                            response_avg_fx[ch] = L_shl( response_avg_fx[ch], sub( tmp_e, Q1 ) ); // q30

                            tmp_norm_out = BASOP_Util_Divide3232_Scale_newton( response_avg_fx[ch], L_max( norm_fx, L_abs( response_avg_fx[ch] ) ), &tmp_e ); // Q31 - tmp_e

                            tmp_norm_out = L_shl( tmp_norm_out, sub( tmp_e, Q1 ) );                                                                           // q30

                            response_avg_fx[ch] = L_and( tmp_norm_out, 0xffff8000 );                                                                          // q30

                            move32();

                        }

                    }
@@ -4868,6 +4869,7 @@ void ivas_get_spar_md_from_dirac_fx( 
                    Word16 norm_q;

#ifdef NONBE_FIX_1748_SPAR_DIV_OPT

                    Word16 num_ch_order, norm_t, tmp_e;

                    Word32 tmp_norm_out;

#else

                    Word16 num_ch_order, hoa2_ch_order;

#endif
@@ -4946,9 +4948,9 @@ void ivas_get_spar_md_from_dirac_fx( 
                    {

                        FOR( ch = 1; ch < foa_ch; ch++ )

                        {

                            response_avg_fx[ch] = BASOP_Util_Divide3232_Scale_newton( response_avg_fx[ch], L_max( norm_fx, response_avg_fx[ch] ), &tmp_e ); // Q31 - tmp_e

                            move32();

                            response_avg_fx[ch] = L_shl( response_avg_fx[ch], sub( tmp_e, Q1 ) ); // q30

                            tmp_norm_out = BASOP_Util_Divide3232_Scale_newton( response_avg_fx[ch], L_max( norm_fx, L_abs( response_avg_fx[ch] ) ), &tmp_e ); // Q31 - tmp_e

                            tmp_norm_out = L_shl( tmp_norm_out, sub( tmp_e, Q1 ) );                                                                           // q30

                            response_avg_fx[ch] = L_and( tmp_norm_out, 0xffff8000 );                                                                          // q30

                            move32();

                        }

                    }