cpp/openttd-patchpack/source Changeset - r25124:fb2557a5732d

Changeset - r25124:fb2557a5732d

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Peter Nelson - 3 years ago 2021-04-04 14:58:06
peter1138@openttd.org

Change: Apply power-of-3 scaling to master effect volume to improve perceived loudness change.

1 file changed with 7 insertions and 1 deletions:

src/mixer.cpp

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src/mixer.cpp

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@@ @@ -155,7 +155,13 @@ void MxMixSamples(void *buffer, uint sam @@
 	/* Fetch music if a sampled stream is available */
 	if (_music_stream) _music_stream((int16*)buffer, samples);
 	uint8 effect_vol = _settings_client.music.effect_vol;
 	/* Apply simple x^3 scaling to master effect volume. This increases the
 	 * perceived difference in loudness to better match expectations. effect_vol
 	 * is expected to be in the range 0-127 hence the division by 127 * 127 to
 	 * get back into range. */
 	uint8 effect_vol = (_settings_client.music.effect_vol *
 	                    _settings_client.music.effect_vol *
 	                    _settings_client.music.effect_vol) / (127 * 127);
 	/* Mix each channel */
 	for (mc = _channels; mc != endof(_channels); mc++) {

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