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-rw-r--r--audio/softsynth/mt32.cpp7
1 files changed, 7 insertions, 0 deletions
diff --git a/audio/softsynth/mt32.cpp b/audio/softsynth/mt32.cpp
index 4420657854..67f2df1f6d 100644
--- a/audio/softsynth/mt32.cpp
+++ b/audio/softsynth/mt32.cpp
@@ -212,6 +212,13 @@ int MidiDriver_MT32::open() {
double gain = (double)ConfMan.getInt("midi_gain") / 100.0;
_synth->setOutputGain(1.0f * gain);
_synth->setReverbOutputGain(0.68f * gain);
+ // We let the synthesizer play MIDI messages immediately. Our MIDI
+ // handling is synchronous to sample generation. This makes delaying MIDI
+ // events result in odd sound output in some cases. For example, the
+ // shattering window in the Indiana Jones and the Fate of Atlantis intro
+ // will sound like a bell if we use any delay here.
+ // Bug #6242 "AUDIO: Built-In MT-32 MUNT Produces Wrong Sounds".
+ _synth->setMIDIDelayMode(MT32Emu::MIDIDelayMode_IMMEDIATE);
_initializing = false;