Java AudioEvent类代码示例

import be.tarsos.dsp.AudioEvent; //导入依赖的package包/类
public void handlePitch(PitchDetectionResult pitchDetectionResult, AudioEvent audioEvent) {
	if (pitchDetectionResult.getPitch() != -1) {
		double timeStamp = audioEvent.getTimeStamp();
		float pitch = pitchDetectionResult.getPitch();

		float probability = pitchDetectionResult.getProbability();
		double rms = audioEvent.getRMS() * 100;
		String message = String.format("Pitch detected at %.2fs: %.2fHz ( %.2f probability, RMS: %.5f )\n",
				timeStamp, pitch, probability, rms);
		System.out.println(message);
		String addMe1;
		if (probability < 0.5 && Pitch.pitches.getItemCount() > 2) {
			addMe1 = Pitch.pitches.getItem(Pitch.pitches.getItemCount() - 1);
		} else {
			addMe1 = String.valueOf(pitch);
		}
		String addMe2 = String.valueOf(timeStamp);
		Pitch.pitches.add(addMe1);
		Pitch.time.add(addMe2);

	}
}
 

import be.tarsos.dsp.AudioEvent; //导入依赖的package包/类
@Override
public boolean process(AudioEvent audioEvent) {
	float[] currentMagnitudes = eventPointProcessor.getMagnitudes().clone();
	
	//for visualization purposes:
	//store the new max value or, decay the running max
	float currentMaxValue = max(currentMagnitudes);
	if(currentMaxValue > runningMaxMagnitude){
		runningMaxMagnitude = currentMaxValue;
	}else{
		runningMaxMagnitude = 0.9999f * runningMaxMagnitude;
	}
	normalize(currentMagnitudes);
	
	magnitudes.put((float)audioEvent.getTimeStamp(),currentMagnitudes);
	
	return true;
}
 

import be.tarsos.dsp.AudioEvent; //导入依赖的package包/类
@Override
public boolean process(AudioEvent audioEvent) {
	float[] fftData = audioEvent.getFloatBuffer().clone();
	
	Arrays.fill(zeroPaddedData, 0);
	System.arraycopy(fftData, 0, zeroPaddedData, fftData.length/2, fftData.length);
	
	fft.forwardTransform(zeroPaddedData);

	fft.multiply(zeroPaddedData, zeroPaddedInvesedQuery);
	fft.backwardsTransform(zeroPaddedData);
	float maxVal = -100000;
	int maxIndex =  0;
	for(int i = 0 ; i<zeroPaddedData.length ; i++){
		if(zeroPaddedData[i]> maxVal){
			maxVal = zeroPaddedData[i];
			maxIndex=i;
		}
	}
	
	float time = (float) (audioEvent.getTimeStamp() - audioEvent.getBufferSize()/audioEvent.getSampleRate() + maxIndex/2 /audioEvent.getSampleRate() + 0.005);
	handler.handleCrossCorrelation((float)audioEvent.getTimeStamp(), time, maxVal);
	return true;
}
 

import be.tarsos.dsp.AudioEvent; //导入依赖的package包/类
@Override
public void monitor(String query, final int maxNumberOfReqults,Set<Integer> avoid,
		final QueryResultHandler handler) {
	
	int samplerate = Config.getInt(Key.NCTEQ_SAMPLE_RATE);
	int size = Config.getInt(Key.MONITOR_STEP_SIZE) * samplerate;
	int overlap = Config.getInt(Key.MONITOR_OVERLAP) * samplerate;
	final ConstantQ constanQ = createConstantQ();
	
	AudioDispatcher d = AudioDispatcherFactory.fromPipe(query, samplerate, size, overlap);
	d.addAudioProcessor(new AudioProcessor() {
		@Override
		public boolean process(AudioEvent audioEvent) {
			double timeStamp = audioEvent.getTimeStamp() - Config.getInt(Key.MONITOR_OVERLAP);
			processMonitorQuery(audioEvent.getFloatBuffer().clone(), maxNumberOfReqults, handler,timeStamp,constanQ);
			return true;
		}
		
		@Override
		public void processingFinished() {
		}
	});
	d.run();

}
 

import be.tarsos.dsp.AudioEvent; //导入依赖的package包/类
@Override
public boolean process(AudioEvent audioEvent)
{
	// Don't do anything before the beginning of Fade Out
	if(isFadeOut==true)
	{
		if(firstTime==-1)
			firstTime=audioEvent.getTimeStamp();

		// Decrease the gain according to time since the beginning of the Fade Out
		time=audioEvent.getTimeStamp()-firstTime;
		gp.setGain(1-time/duration);
		gp.process(audioEvent);
	}
	return true;
}
 

import be.tarsos.dsp.AudioEvent; //导入依赖的package包/类
@Override
public boolean process(AudioEvent audioEvent)
{
	// Don't do anything after the end of the Fade In
	if(fadingIn)
	{
		if(firstTime==-1)
			firstTime=audioEvent.getTimeStamp();
		
		
		// Increase the gain according to time since the beginning of the Fade In
		time=audioEvent.getTimeStamp()-firstTime;
		gp.setGain(time/duration);
		gp.process(audioEvent);
		if(time > duration){
			fadingIn = false;
		}
	}
	return true;
}
 

import be.tarsos.dsp.AudioEvent; //导入依赖的package包/类
@Override
public boolean process(AudioEvent audioEvent) {
	float[] audioFloatBuffer = audioEvent.getFloatBuffer();
	int overlap = audioEvent.getOverlap();
		
	for(int i = overlap ; i < audioFloatBuffer.length ; i++){
		if(position >= echoBuffer.length){
			position = 0;
		}
		
		//output is the input added with the decayed echo 		
		audioFloatBuffer[i] = audioFloatBuffer[i] + echoBuffer[position] * decay;
		//store the sample in the buffer;
		echoBuffer[position] = audioFloatBuffer[i];
		
		position++;
	}
	
	applyNewEchoLength();
	
	return true;
}
 

import be.tarsos.dsp.AudioEvent; //导入依赖的package包/类
@Override
public boolean process(AudioEvent audioEvent) {

	float[] audioBuffer = audioEvent.getFloatBuffer();
	float[] sortBuffer = new float[audioBuffer.length];

	transform.forwardTrans(audioBuffer);

	for (int i = 0; i < sortBuffer.length; i++) {
		sortBuffer[i] = Math.abs(audioBuffer[i]);
	}
	Arrays.sort(sortBuffer);

	double threshold = sortBuffer[compression];

	for (int i = 0; i < audioBuffer.length; i++) {
		if (Math.abs(audioBuffer[i]) <= threshold) {
			audioBuffer[i] = 0;
		}
	}
	return true;
}
 

import be.tarsos.dsp.AudioEvent; //导入依赖的package包/类
@Override
public boolean process(AudioEvent audioEvent) {

	float[] audioBuffer = audioEvent.getFloatBuffer();
	float[] sortBuffer = new float[audioBuffer.length];
	transform.transform(audioEvent.getFloatBuffer());

	for (int i = 0; i < sortBuffer.length; i++) {
		sortBuffer[i] = Math.abs(audioBuffer[i]);
	}
	Arrays.sort(sortBuffer);

	double threshold = sortBuffer[compression];

	for (int i = 0; i < audioBuffer.length; i++) {
		if (Math.abs(audioBuffer[i]) <= threshold) {
			audioBuffer[i] = 0;
		}
	}

	return true;
}
 

import be.tarsos.dsp.AudioEvent; //导入依赖的package包/类
@Override
public boolean process(AudioEvent audioEvent) {
	float[] audioFloatBuffer = audioEvent.getFloatBuffer();
	
	for (int i = audioEvent.getOverlap(); i < audioFloatBuffer.length; i++) {
		//shift the in array
		System.arraycopy(in, 0, in, 1, in.length - 1);
		in[0] = audioFloatBuffer[i];

		//calculate y based on a and b coefficients
		//and in and out.
		float y = 0;
		for(int j = 0 ; j < a.length ; j++){
			y += a[j] * in[j];
		}			
		for(int j = 0 ; j < b.length ; j++){
			y += b[j] * out[j];
		}
		//shift the out array
		System.arraycopy(out, 0, out, 1, out.length - 1);
		out[0] = y;
		
		audioFloatBuffer[i] = y;
	} 
	return true;
}
 

import be.tarsos.dsp.AudioEvent; //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.AudioEvent; //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.AudioEvent; //导入依赖的package包/类
@Override
public boolean process(AudioEvent audioEvent) {
	float[][] input = {audioEvent.getFloatBuffer()};
	rbs.process(input, false);
	
	int availableSamples = rbs.available();
	while(availableSamples ==0){
		try {
			Thread.sleep(1);
		} catch (InterruptedException e) {
			e.printStackTrace();
		}
		availableSamples = rbs.available();
	}
	float[][] output = {new float[availableSamples]};
	rbs.retrieve(output);
	audioEvent.setFloatBuffer(output[0]);
	return true;
}
 

import be.tarsos.dsp.AudioEvent; //导入依赖的package包/类
/**
 * A pitch detection storing {@link SoundEvent}
 */
protected VoiceDetection newPitchDetectionHandler() {
    VoiceDetection prs = new VoiceDetection(settings.format.getSampleRate(), settings) {
        @Override
        public void handlePitch(PitchDetectionResult pitchDetectionResult, AudioEvent audioEvent) {
            // Process
            float frequency = (float) computeFrequency(pitchDetectionResult);
            float amplitude = computeAmplitude(audioEvent);
            double timestamp = audioEvent.getTimeStamp();

            // pitch
            SoundEvent pitch = SoundEvent.pitch((float) timestamp, frequency);
            pitch.confidence = pitchDetectionResult.getProbability();
            pitchEvents.add(pitch);

            // amplitude
            ampliEvents.add(SoundEvent.amplitude((float) timestamp, amplitude));
        }
    };
    return prs;
}
 

import be.tarsos.dsp.AudioEvent; //导入依赖的package包/类
public void extractInfoFromAudio(final Component componentToRepaint){
	int samplerate = Config.getInt(Key.NFFT_SAMPLE_RATE);
	int size = Config.getInt(Key.NFFT_SIZE);
	int overlap = size - Config.getInt(Key.NFFT_STEP_SIZE);
	StopWatch w = new StopWatch();
	w.start();
	
	d = AudioDispatcherFactory.fromPipe(audioFile.getAbsolutePath(), samplerate, size, overlap);
	eventPointProcessor = new QIFFTEventPointProcessor(size,overlap,samplerate,4);
	d.addAudioProcessor(eventPointProcessor);
	d.addAudioProcessor(this);
	d.addAudioProcessor(new AudioProcessor() {
		@Override
		public void processingFinished() {
			SwingUtilities.invokeLater(new Runnable() {
				@Override
				public void run() {
					componentToRepaint.repaint();
				}
			});
			if(referenceFileInfo!=null)
				referenceFileInfo.setMatchingFingerprints(matchingPrints);
		}			
		@Override
		public boolean process(AudioEvent audioEvent) {
			return true;
		}
	});
	new Thread(d).start();
}