static FLOAT
ATHmdct(SessionConfig_t const *cfg, FLOAT f)
{
FLOAT ath;
ath = ATHformula(cfg, f);
ath -= NSATHSCALE;
/* modify the MDCT scaling for the ATH and convert to energy */
ath = pow(10.0, ath / 10.0 + cfg->ATHlower);
return ath;
}
static FLOAT
ATHmdct(SessionConfig_t const *cfg, FLOAT f)
{
FLOAT ath;
ath = ATHformula(cfg, f);
if (cfg->ATHfixpoint > 0) {
ath -= cfg->ATHfixpoint;
}
else {
ath -= NSATHSCALE;
}
ath += cfg->ATH_offset_db;
/* modify the MDCT scaling for the ATH and convert to energy */
ath = powf(10.0f, ath * 0.1f);
return ath;
}
FLOAT8 ATHmdct( lame_global_flags *gfp, FLOAT8 f )
{
lame_internal_flags *gfc = gfp->internal_flags;
FLOAT8 ath;
ath = ATHformula( f , gfp );
if (gfc->nsPsy.use) {
ath -= NSATHSCALE;
} else {
ath -= 114;
}
/* modify the MDCT scaling for the ATH */
ath -= gfp->ATHlower;
/* convert to energy */
ath = pow( 10.0, ath/10.0 );
return ath;
}
