Commit eb22204f authored by Sumeyra Demir Kanik's avatar Sumeyra Demir Kanik
Browse files

Change from cosine interpolation to linear interpolation to reduce complexity

parent d101d328

lib_rend/ivas_objectRenderer_sfx.c

+6 −16
Original line number Diff line number Diff line
@@ -37,9 +37,6 @@ 
#include "ivas_rom_rend.h"

#include "prot.h"

#include "wmc_auto.h"

#ifdef FIX_379_GAININTP

#include "ivas_rom_com.h"

#endif





/*---------------------------------------------------------------------*
@@ -254,15 +251,10 @@ void TDREND_firfilt( 
    float tmp;

    int16_t i, j;

#ifdef FIX_379_GAININTP

    float gain_tmp, gain_delta;

    const float *pcos;

    int16_t step;

    float cos_tmp;



    /* Setup pointer for cosine gain transition curve */

    gain_delta = Gain - prevGain;

    pcos = ivas_mdft_coeff_cos_twid_960; /* ivas_mdft_coeff_cos_twid_960 */

    step = 960 / subframe_length;

    float step, gain_tmp, gain_delta;



    gain_delta = ( Gain - prevGain );

    step = gain_delta / ( subframe_length );

    gain_tmp = prevGain;

#endif
@@ -283,10 +275,8 @@ void TDREND_firfilt( 
            tmp += ( *p_filter++ ) * ( *p_tmp-- );

        }

#ifdef FIX_379_GAININTP

        /* Apply cosine gain curve in case of abrupt gain changes */

        cos_tmp = *pcos;

        pcos += step;

        gain_tmp = prevGain + gain_delta * ( 1 - cos_tmp * cos_tmp );

        /* Apply linear gain interpolation in case of abrupt gain changes */

        gain_tmp = gain_tmp + step;

        signal[i] = tmp * gain_tmp;

#else

        signal[i] = tmp * Gain;