import be.tarsos.dsp.pitch.PitchDetectionHandler; //导入依赖的package包/类
private void startDispatch() {
    dispatcher = AudioDispatcherFactory.fromDefaultMicrophone(22050, 1024, 0);
    uiThread = new Handler();
    PitchDetectionHandler pdh = (PitchDetectionResult result, AudioEvent audioEven) -> uiThread.post(() -> {
        final float pitchInHz = result.getPitch();
        int pitch =  pitchInHz > 0 ? (int) pitchInHz : 1;

        if(pitch > 1 && mConnected) {
            if((pitch - lastPitch) >= sensitive * 10) {
                Random random = new Random();
                byte[] rgb = getLedBytes(random.nextInt(600000000) + 50000);
                controlLed(rgb);
            }

            if(minPitch > pitch)
                minPitch = pitch;
        }

        lastPitch = pitch;
    });

    processor = new PitchProcessor(PitchProcessor.PitchEstimationAlgorithm.FFT_YIN, 22050, 1024, pdh);
    dispatcher.addAudioProcessor(processor);
    listeningThread = new Thread(dispatcher);
    listeningThread.start();
}
 

import be.tarsos.dsp.pitch.PitchDetectionHandler; //导入依赖的package包/类
private void checkMicrophone() {
    AudioDispatcher dispatcher = AudioDispatcherFactory.fromDefaultMicrophone(22050, 1024, 0);

    PitchDetectionHandler pdh = new PitchDetectionHandler() {
        @Override
        public void handlePitch(PitchDetectionResult result,AudioEvent e) {
            final float pitchInHz = result.getPitch();
            runOnUiThread(new Runnable() {
                @Override
                public void run() {
                    if (pitchInHz != -1) {
                        System.out.println(pitchInHz);
                    }
                    if (pitchInHz <= 18500 && pitchInHz >= 17500) {
                        System.err.println("Pitch Richtig");
                    }
                }
            });
        }
    };
    AudioProcessor p = new PitchProcessor(PitchProcessor.PitchEstimationAlgorithm.FFT_YIN, 22050, 1024, pdh);
    dispatcher.addAudioProcessor(p);
    new Thread(dispatcher,"Audio Dispatcher").start();
}
 

import be.tarsos.dsp.pitch.PitchDetectionHandler; //导入依赖的package包/类
@Override
protected Void doInBackground(Void... params) {
    PitchDetectionHandler pitchDetectionHandler = new PitchDetectionHandler() {
        @Override
        public void handlePitch(PitchDetectionResult pitchDetectionResult,
                                AudioEvent audioEvent) {

            if (isCancelled()) {
                stopAudioDispatcher();
                return;
            }

            if (!IS_RECORDING) {
                IS_RECORDING = true;
                publishProgress();
            }

            float pitch = pitchDetectionResult.getPitch();

            if (pitch != -1) {
                PitchDifference pitchDifference = PitchComparator.retrieveNote(pitch);


                pitchDifferences.add(pitchDifference);

                if (pitchDifferences.size() >= MIN_ITEMS_COUNT) {
                    PitchDifference average =
                            Sampler.calculateAverageDifference(pitchDifferences);

                    publishProgress(average);

                    pitchDifferences.clear();
                }
            }
        }
    };

    PitchProcessor pitchProcessor = new PitchProcessor(FFT_YIN, SAMPLE_RATE,
            BUFFER_SIZE, pitchDetectionHandler);

    audioDispatcher = fromDefaultMicrophone(SAMPLE_RATE,
            BUFFER_SIZE, OVERLAP);

    audioDispatcher.addAudioProcessor(pitchProcessor);

    audioDispatcher.run();

    return null;
}
 

import be.tarsos.dsp.pitch.PitchDetectionHandler; //导入依赖的package包/类
public void startPitchDetection()
{
       Log.d(TAG, "startPitchDetection");

	//algorithm, sampleRate, bufferSize, handler
	dispatcher.addAudioProcessor(new PitchProcessor(PitchEstimationAlgorithm.FFT_YIN, 16000, 1024, new PitchDetectionHandler() {
		
		@Override
		public void handlePitch(PitchDetectionResult pitchDetectionResult, AudioEvent audioEvent) {
			
			//-1 means no sound 
			final float pitchInHz = pitchDetectionResult.getPitch();
			//Log.i("Pitch", String.valueOf(pitchInHz));
			
			if(pitchInHz == -1)
	    		sendResult("Silent");
	    	else
	    		sendResult("Speaking");
			
			
			//call showPitchOnUI(pitchInHz) 
			/*runOnUiThread(new Runnable() {
			     @Override
			     public void run() {
			    	
			    	 
			    	 
			    	if(pitchInHz == -1)
			    		uiMessage = "Silent";
			    	else
			    		uiMessage = "Speaking";
			    }
			});
			
			*/
			
		}
	}));
	

	
}