Android 谷歌语音转换文本不会返回结果

我希望谷歌语音到文本API在我按下按钮后识别一个短短语。所以我想出了下面的代码。但它一直没有结果。我很困惑，那里有结果（缓冲区等），麦克风工作正常，并且在模拟器中启用。谷歌控制台也不会显示错误

这是我的密码。 单击开始录制的侦听器：

val clicker: View.OnClickListener = View.OnClickListener {
        Log.d(TAG, "Starting record thread")
        mAudioRecorder.record(LISTEN_TIME_MILLIS)
    }
    mReadButton.setOnClickListener(clicker)

fun record(listenTimeMillis: Long) {
    val byteString: ByteString = ByteString.EMPTY
    mAudioRecorder = initAudioRecorder()
    val mBuffer = ByteArray(4 * AudioRecord.getMinBufferSize(SAMPLE_RATE_HZ, CHANNEL, ENCODING))
    mAudioRecorder!!.startRecording()

    Thread {
        Process.setThreadPriority(Process.THREAD_PRIORITY_BACKGROUND)
        Thread.sleep(listenTimeMillis)

        val read = mAudioRecorder!!.read(mBuffer, 0, mBuffer.size, AudioRecord.READ_NON_BLOCKING)
        val intent = Intent(RECORDING_COMPLETED_INTENT)
        try {
            if (read > 0) {
                intent.putExtra(RECORDING_AUDIO, mBuffer)
                intent.putExtra(RECORDING_SUCCESS, true)
            }

            LocalBroadcastManager.getInstance(context).sendBroadcast(intent)
        } catch (e: Exception) {
            Log.e(TAG, e.stackTrace.toString())
        }

        releaseAudioRecorder()
    }.start()
}

这是一个广播接收器，它处理结果并尝试将结果发送到谷歌：

private val broadCastReceiver = object : BroadcastReceiver() {
    override fun onReceive(contxt: Context?, intent: Intent?) {
        if (intent!!.getBooleanExtra(RECORDING_SUCCESS, false)) {
            val byteArrayExtra = intent.getByteArrayExtra(RECORDING_AUDIO)
            val audioResultByteString: ByteString = ByteString.copyFrom(byteArrayExtra)

            if (audioResultByteString.size() > 0) {
                val audio: RecognitionAudio = RecognitionAudio.newBuilder()
                    .setContent(audioResultByteString).build()

                val resultsList = mSpeechClient.recognize(config, audio).resultsList

                if (resultsList.size > 0) {                       
                    for (result in resultsList) {
                        val resultText = result.alternativesList[0].transcript
                    }
                }
                Log.d(TAG, "- Done recognition. Result Qty: ${resultsList.size}")
            }
        }
    }
}

下面是AudioRecorder类函数，用于录制：

val clicker: View.OnClickListener = View.OnClickListener {
        Log.d(TAG, "Starting record thread")
        mAudioRecorder.record(LISTEN_TIME_MILLIS)
    }
    mReadButton.setOnClickListener(clicker)

fun record(listenTimeMillis: Long) {
    val byteString: ByteString = ByteString.EMPTY
    mAudioRecorder = initAudioRecorder()
    val mBuffer = ByteArray(4 * AudioRecord.getMinBufferSize(SAMPLE_RATE_HZ, CHANNEL, ENCODING))
    mAudioRecorder!!.startRecording()

    Thread {
        Process.setThreadPriority(Process.THREAD_PRIORITY_BACKGROUND)
        Thread.sleep(listenTimeMillis)

        val read = mAudioRecorder!!.read(mBuffer, 0, mBuffer.size, AudioRecord.READ_NON_BLOCKING)
        val intent = Intent(RECORDING_COMPLETED_INTENT)
        try {
            if (read > 0) {
                intent.putExtra(RECORDING_AUDIO, mBuffer)
                intent.putExtra(RECORDING_SUCCESS, true)
            }

            LocalBroadcastManager.getInstance(context).sendBroadcast(intent)
        } catch (e: Exception) {
            Log.e(TAG, e.stackTrace.toString())
        }

        releaseAudioRecorder()
    }.start()
}

---

我解决了这个问题。原因是缓冲区太小。因此，识别服务器实际上得到了半秒钟的音频记录，但它显然无法识别

 val mBuffer = ByteArray(4 * AudioRecord.getMinBufferSize(SAMPLE_RATE_HZ, CHANNEL, ENCODING))

我放了200而不是

AudioRecord.READ_NON_BLOCKING

我放了

AudioRecord.READ_BLOCKING

，我在循环中读取缓冲区，并在每次迭代中增加偏移量。然后它开始工作

val startTime = System.currentTimeMillis()
        var deltaTime = 0L
        var offset = 0
        val intent = Intent(RECORDING_COMPLETED_INTENT)
        val readChunk = 512

        while (deltaTime < listenTimeMillis && offset < mBuffer.size) {
            val read = mAudioRecord!!.read(mBuffer, offset, readChunk, AudioRecord.READ_BLOCKING)

            if (read < 0) {
                intent.putExtra(RECORDING_SUCCESS, false)
                break; //if read with error, end here
            }

            deltaTime = System.currentTimeMillis() - startTime //startTime is a while loop breaking condition so it lestens only for specified amount of time
            offset += readChunk
        }

val startTime=System.currentTimeMillis（）
变量deltaTime=0L
var偏移量=0
val intent=intent（记录\u完成\u intent）
val readChunk=512
while（deltaTime