使用的是TarsosDSP开源库

1.网上下载TarsosDSP.jar导入

2.检测麦克风是否有声音   info.getInteger("sampleRateInHz")跟初始化TarsosDSP的采样率一样即可

//初始化TarsosDSP   采样率,位深度,通道数,编码方式,表示音频的字节序为大端字节序
TarsosDSPAudioFormat audioFormat = new TarsosDSPAudioFormat(16000,16,1,true,false);
  TarsosDSPAudioFloatConverter audioConverter = TarsosDSPAudioFloatConverter.getConverter(audioFormat);
    SilenceDetector silenceDetector = new SilenceDetector();

//获取麦克风数据大小
recordBufsize = AudioRecord
                .getMinBufferSize(info.getInteger("sampleRateInHz"),
                        AudioFormat.CHANNEL_IN_MONO,
                        AudioFormat.ENCODING_PCM_16BIT);
        recordBufsize = Math.max(recordBufsize, 4096);  //值越大VAD检测越准
//初始化麦克风
audioRecord = new AudioRecord(IetUtils.audioSource(),
                info.getInteger("sampleRateInHz"),
                AudioFormat.CHANNEL_IN_MONO,
                AudioFormat.ENCODING_PCM_16BIT,
                recordBufsize);

audioRecord.startRecording();//开始收音

byte data[] = new byte[recordBufsize];
int read;
//recordBufsize byte[]值越大越准  噪音会影响到VAD的检测
while (isRecording) {   //这个循环根据实际需要的间隔来检测
    read = audioRecord.read(data, 0, recordBufsize);  //读取麦克风数据
    if (AudioRecord.ERROR_INVALID_OPERATION != read) {
        float[] floatData = new float[data.length / audioFormat.getFrameSize()];
        audioConverter.toFloatArray(data, floatData);
        boolean silence = silenceDetector.isSilence(floatData.clone());
        if(silence){
            //没声音业务
        }else{
            //有声音业务
        }
    }
}

以上就是简单的麦克风检测是否有声音