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Asked: 2026-05-11T15:45:21+00:00

There is a really cool audio toy called ToneMatrix . I would like to

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There is a really cool audio ‘toy’ called ToneMatrix. I would like to reimplement it as a Java applet. I’ve tried using JFugue‘s player.play with individual notes for sound and Thread.sleep for timing, but the results are horrible.

JFugue stops responding after the 17th (yes, really, I counted) invocation of player.play and Thread.sleep is too irregular to deliver a good rhythm.

What would you recommend instead? Basically, I’m looking for a simple way to generate single notes of sound on the fly. So a fraction of a second before the sound is due to play, I need to be able to look at the data and tell the audio library what notes to play. (Multiple notes in harmony are likely.)

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  1. My guess is you’re forgetting to turn the notes off in JFugue, or there’s a bug which is forgetting to stop playing the notes once started.

    Using MIDI is a pretty easy way to do what you’re talking about. Here’s a bit of a hodgepodge of useful methods in the midi package that will get you started:

    Synthesizer synth = MidiSystem.getSynthesizer(); synth.open(); MidiChannel midiChannel = synth.getChannels()[0]; midiChannel.allNotesOff(); currentInstrument = synth.getAvailableInstruments()[index]; System.out.println('Switching instrument to #' + index + ': ' + currentInstrument.getName()); synth.loadInstrument(currentInstrument); midiChannel.programChange(currentInstrument.getPatch().getBank(), currentInstrument.getPatch().getProgram()); midiChannel.noteOn(noteNumber, velocity); midiChannel.noteOff(noteNumber);
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