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adjust voice gain for 24bit samples

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derselbst 2017-12-08 20:24:17 +01:00
parent d463dff617
commit 1629f9f997
1 changed files with 5 additions and 1 deletions
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6
src/synth/fluid_voice.c
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@ -438,7 +438,11 @@ void fluid_voice_start(fluid_voice_t* voice)
*/
static fluid_real_t fluid_voice_calculate_gain_amplitude(const fluid_voice_t* voice, fluid_real_t gain)
{
return gain * voice->synth_gain / 32768.0f;
/* we use 24bit samples in fluid_rvoice_dsp. in order to normalize float
* samples to [0.0;1.0] divide samples by the max. value of an int24 and
* amplify them with the gain */
const fluid_real_t INT24_MAX = (1 << (16+8-1)) * 1.0f;
return gain * voice->synth_gain / INT24_MAX;
}
void