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我将首先明确说明我的主要问题：当使用 Java 合成器录制到 Java 音序器时，用正确的“滴答”从 ShortMessages 中以正确的微秒位置创建 midi 事件的正确方法是什么？

几天来，我一直试图弄清楚这一点。我的小 MIDI 程序非常简单，或者至少应该如此。有一个钢琴布局和三个按钮。使用合成器的钢琴效果很好；您可以使用鼠标或电脑键盘弹奏音符。

我已经前后阅读了 Oracle Docs 说明（以及许多论坛主题），但显然我遗漏了一些东西。

目前，我可以通过手动创建一个 ShortMessage、一个 MidiEvent 并将它们发送到音序器/将它们添加到音轨来让音序器录制，但它只会录制一次。回放也会以错误的时间回放它们。这是执行这些的代码：（如果您希望我发布其他或所有代码，请告知）。

单击记录/停止/按钮时发生的情况的代码：

    public void actionPerformed(ActionEvent e) {
    if(e.getActionCommand() == "Record")
    {

        mySeq.deleteTrack(track);
        track = mySeq.createTrack();
        try {
            seq.setSequence(mySeq);
        } catch (InvalidMidiDataException e1) {
            // TODO Auto-generated catch block
            e1.printStackTrace();
        }
        seq.recordEnable(track, ChannelNum);
        seq.startRecording();
    }

    else if(e.getActionCommand() == "Stop")
    {
        seq.stop();
    }

    else if(e.getActionCommand() == "Play")
    {
        mySeq.deleteTrack(track);
        track = mySeq.createTrack();
        addEvents(track);
        seq.setTickPosition(10);
        seq.start();
    }

}

这是用户在钢琴上弹奏音符时的代码：

    // The Mouse presses a key, the note on the channel is turned on
    // A MidiEvent and ShortMessage are created using the CreateOnEvent method
    public void mousePressed (MouseEvent e) {
        Key key = (Key) e.getSource ();
        channel.noteOn (key.getNote (), 127);
        CreateOnEvent(key);
    }

    public void mouseReleased (MouseEvent e) {
        Key key = (Key) e.getSource ();
        channel.noteOff (key.getNote ());
        CreateOffEvent(key);
    }

    public void mouseClicked (MouseEvent e) { }
    public void mouseEntered (MouseEvent e) { }
    public void mouseExited (MouseEvent e) { }

最后是 CreateOnEvent 方法：

    // I originally was sending the events directly to the sequencer
    // but here I'm adding the events to an ArrayList of MidiEvents to attempt a work around
    // I can then add those events to a track to play them
    public void CreateOnEvent(Key key)
{
    if(seq.isRecording())
    {
        ShortMessage myMsg = new ShortMessage();
        try {
            myMsg.setMessage(ShortMessage.NOTE_ON, ChannelNum, key.getNote(), 127);
        } catch (InvalidMidiDataException e1) {
            // TODO Auto-generated catch block
            e1.printStackTrace();
        }
        long timeStamp = synth.getMicrosecondPosition();
        long tick = seq.getTickPosition();
        event = new MidiEvent(myMsg, tick);
        seqReceiver.send(myMsg, timeStamp);
        Events.add(event);
    }

}
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