带有蓝牙麦克风的Android语音识别器 [英] Android Speech Recognizer with Bluetooth Microphone

问题描述

我一直在编写一个聊天应用程序，以与蓝牙耳机/耳机配合使用. 到目前为止，我已经能够通过蓝牙耳机中的麦克风录制音频文件，并且 我已经能够使用RecogniserIntent等在Android设备的内置麦克风上使用语音转文本"功能.

I've been writing a chat app to work with bluetooth headsets/earphones. So far I've been able to record audio files via the mic in a bluetooth headset and I've been able to get Speech-to-text working with the Android device's built in microphone, using RecogniserIntent etc.

但是我找不到让SpeechRecogniser通过蓝牙麦克风收听的方法，甚至有可能这样做，如果可以，怎么办?

But I can't find a way of getting SpeechRecogniser to listen through the Bluetooth mic.Is it even possible to do so, and if so, how?

当前设备:三星Galax

Current Device: Samsung Galax

Android版本:4.4.2

Android Version: 4.4.2

我在平板电脑的语音识别器设置中隐藏了一些选项，其中之一是标有使用蓝牙麦克风"的复选框，但似乎没有作用.

I found some options hidden in my tablets settings for the Speech Recognizer, one of these is a tick box labeled "use bluetooth microphone" but it seems to have no effect.

推荐答案

找到了我自己问题的答案，因此我将其发布给他人使用:

Found the answer to my own question so I'm posting it for others to use:

要获得语音识别以与Bluetooth Mic配合使用，您首先需要将该设备作为BluetoothHeadset对象，然后在其上调用.startVoiceRecognition()，这会将模式设置为语音识别.

In order to get speak recognition to work with a Bluetooth Mic you first need to get the device as a BluetoothHeadset Object and then call .startVoiceRecognition() on it, this will set the mode to Voice recognition.

完成后，您需要调用.stopVoiceRecognition().

Once finished you need to call .stopVoiceRecognition().

您将这样获得BluetoothHeadset:

You get the BluetoothHeadset as such:

private void SetupBluetooth()
{
    btAdapter = BluetoothAdapter.getDefaultAdapter();

    pairedDevices = btAdapter.getBondedDevices();

    BluetoothProfile.ServiceListener mProfileListener = new BluetoothProfile.ServiceListener() {
        public void onServiceConnected(int profile, BluetoothProfile proxy)
        {
            if (profile == BluetoothProfile.HEADSET)
            {
                btHeadset = (BluetoothHeadset) proxy;
            }
        }
        public void onServiceDisconnected(int profile)
        {
            if (profile == BluetoothProfile.HEADSET) {
                btHeadset = null;
            }
        }
    };
    btAdapter.getProfileProxy(SpeechActivity.this, mProfileListener, BluetoothProfile.HEADSET);

}

然后您将调用startVoiceRecognition()并发送语音识别意图，如下所示:

Then you get call startVoiceRecognition() and send off your voice recognition intent like so:

private void startVoice()
{
    if(btAdapter.isEnabled())
    {
        for (BluetoothDevice tryDevice : pairedDevices)
        {
            //This loop tries to start VoiceRecognition mode on every paired device until it finds one that works(which will be the currently in use bluetooth headset)
            if (btHeadset.startVoiceRecognition(tryDevice))
            {
                break;
            }
        }
    }
    recogIntent = new Intent(RecognizerIntent.ACTION_RECOGNIZE_SPEECH);
    recogIntent.putExtra(RecognizerIntent.EXTRA_LANGUAGE_MODEL, RecognizerIntent.LANGUAGE_MODEL_FREE_FORM);

    recog = SpeechRecognizer.createSpeechRecognizer(SpeechActivity.this);
    recog.setRecognitionListener(new RecognitionListener()
    {
       .........
    });

    recog.startListening(recogIntent);
}

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