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

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can show me how control volume of midi sequencer without using sound bank or synthesizer?

i want make midi fade out before continuing next midi in sequence

            if(midiplay)             {                  midi = s + savereq;                 try {                     //system.out.println("play midi " + midi);                     if (musicsr != null)                     {                                                /* want fade out*/                         musicsr.stop(); //stop sequencer                         musicsr.close(); //close sequencer                     }                     musicsr = null;                      musics = null;                      file music = new file(midi);                     if(music.exists())                     {                         musics = midisystem.getsequence(music);                     }                      // create sequencer sequence                     musicsr = midisystem.getsequencer();                             musicsr.open();                             musicsr.setsequence(musics);                             musicsr.setloopcount(musicsr.loop_continuously);                             musicsr.start();                  } catch (exception ex) {                     ex.printstacktrace();                 }                   midiplay = false;              }

  1. call getsequence sequence;
  2. call gettracks list of tracks;

  3. in each track, each channel used in track, call add add multiple events @ appropriate time positions:

    track.add(new midievent(     new shortmessage(shortmessage.control_change, channel, 7, volume),     tick));
  4. maybe remove other volume change events (that interfere fadeout) track;
  5. wait little time fadeout happen.

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