What's the method to control volume in an MIDI sequencer?

Question

Can someone show me how to control the volume of an MIDI sequencer without using a sound bank or synthesizer?

I want to make the MIDI fade out befor

Answer 1

1. Call getSequence to get the Sequence;
2. call getTracks to get the list of tracks;

3. in each track, for each channel used in the track, call add to add multiple events at the appropriate time positions:

   track.add(new MidiEvent(
       new ShortMessage(ShortMessage.CONTROL_CHANGE, channel, 7, volume),
       tick));
   

4. maybe remove other volume change events (that would interfere with your fadeout) from the track;
5. wait a little time for the fadeout to happen.