问java有内置的音频_synthesis_库吗？

EN

int channel = 0; // 0 is a piano, 9 is percussion, other channels are for other instruments

    int volume = 80; // between 0 et 127
    int duration = 200; // in milliseconds

    try {
        Synthesizer synth = MidiSystem.getSynthesizer();
        synth.open();
        MidiChannel[] channels = synth.getChannels();

        // --------------------------------------
        // Play a few notes.
        // The two arguments to the noteOn() method are:
        // "MIDI note number" (pitch of the note),
        // and "velocity" (i.e., volume, or intensity).
        // Each of these arguments is between 0 and 127.
        channels[channel].noteOn( 60, volume ); // C note
        Thread.sleep( duration );
        channels[channel].noteOff( 60 );
        channels[channel].noteOn( 62, volume ); // D note
        Thread.sleep( duration );
        channels[channel].noteOff( 62 );
        channels[channel].noteOn( 64, volume ); // E note
        Thread.sleep( duration );
        channels[channel].noteOff( 64 );

        Thread.sleep( 500 );

        // --------------------------------------
        // Play a C major chord.
        channels[channel].noteOn( 60, volume ); // C
        channels[channel].noteOn( 64, volume ); // E
        channels[channel].noteOn( 67, volume ); // G
        Thread.sleep( 3000 );
        channels[channel].allNotesOff();
        Thread.sleep( 500 );



        synth.close();
    }
    catch (Exception e) {
        e.printStackTrace();
    }