使用TarsosDSP进行Android Studio音高检测

Question

我想显示从麦克风录制的声音的音调。 我只是从下面的链接尝试了示例。 https://medium.com/@juniorbump/pitch-detection-in-android-using-tarsosdsp-a2dd4a3f04e9

但是我得到了异常

error: cannot access LineUnavailableException
class file for javax.sound.sampled.LineUnavailableException not found

MainActivity.java

package com.example.audiopitch;

import androidx.appcompat.app.AppCompatActivity;

import android.os.Bundle;
import android.widget.TextView;

import be.tarsos.dsp.AudioDispatcher;
import be.tarsos.dsp.AudioEvent;
import be.tarsos.dsp.AudioProcessor;
import be.tarsos.dsp.io.jvm.AudioDispatcherFactory;
import be.tarsos.dsp.pitch.PitchDetectionHandler;
import be.tarsos.dsp.pitch.PitchDetectionResult;
import be.tarsos.dsp.pitch.PitchProcessor;

public class MainActivity extends AppCompatActivity {

    AudioDispatcher dispatcher;
    TextView tPitch;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        tPitch = (TextView)findViewById(R.id.tPitch);
        dispatcher = AudioDispatcherFactory.fromDefaultMicrophone(22050,1024,0);

        PitchDetectionHandler pdh = new PitchDetectionHandler() {
            @Override
            public void handlePitch(PitchDetectionResult result, AudioEvent audioEvent) {
                final float pitchHz = result.getPitch();
                runOnUiThread(new Runnable() {
                    @Override
                    public void run() {
                        processPitch(pitchHz);
                    }
                });
            }

        };

        AudioProcessor pitchProcessor = new PitchProcessor(PitchProcessor.PitchEstimationAlgorithm.FFT_YIN, 22050, 1024, pdh);
        dispatcher.addAudioProcessor(pitchProcessor);

        Thread audioThread = new Thread(dispatcher, "Audio Thread");
        audioThread.start();
    }

    public void processPitch(float pitchInHz)
    {
        tPitch.setText(pitchInHz+"");
    }
}