禁用 Microsoft Azure 语音识别中的自动标点符号

Question

我正在使用 Azure STT 服务，我的目标是禁用识别结果中的自动标点符号。

我使用来自连续流源的连续识别，代码如下：

// Initialize the Stream Handling PullAudioInputStreamCallback derived class            
var audioStream = new VoiceAudioStream();

// Initialize with the format required by the Speech service
var audioFormat = AudioStreamFormat.GetWaveFormatPCM(8000, 16, 1);

// Configure speech SDK to work with the audio stream in right format. 
var audioConfig = AudioConfig.FromStreamInput(audioStream, audioFormat);

// Get credentials and region from client's message.
var speechConfig = SpeechConfig.FromSubscription(key, region);
speechConfig.SpeechRecognitionLanguage = "it-IT";
speechConfig.EnableDictation(); //<- Dictation Mode

// With all the info at hand, finally create the SpeechRecognizer instance.
var speechClient = new SpeechRecognizer(speechConfig, audioConfig);
stopRecognition = new TaskCompletionSource<int>();
// Finally start.                 

await speechClient.StartContinuousRecognitionAsync();

Task.WaitAny(new[] { stopRecognition.Task });

这是我正在使用的从

PullAudioInputStreamCallback

派生的类：

public class VoiceAudioStream : PullAudioInputStreamCallback
{
    private readonly EchoStream _dataStream = new();
    private ManualResetEvent _waitForEmptyDataStream = null;

    public override int Read(byte[] dataBuffer, uint size)
    {
        if (_waitForEmptyDataStream != null && !_dataStream.DataAvailable)
        {
            _waitForEmptyDataStream.Set();
            return 0;
        }

        return _dataStream.Read(dataBuffer, 0, dataBuffer.Length);
    }

    public void Write(byte[] buffer, int offset, int count)
    {
        _dataStream.Write(buffer, offset, count);
    }

    public override void Close()
    {
        if (_dataStream.DataAvailable)
        {
            _waitForEmptyDataStream = new ManualResetEvent(false);
            _waitForEmptyDataStream.WaitOne();
        }

        _waitForEmptyDataStream.Close();
        _dataStream.Dispose();
        base.Close();
    }
}

这里是EchoStream类的代码：

public class EchoStream : MemoryStream
{
    private readonly ManualResetEvent _DataReady = new(false);
    private readonly ConcurrentQueue<byte[]> _Buffers = new();

    public bool DataAvailable { get { return !_Buffers.IsEmpty; } }

    public override void Write(byte[] buffer, int offset, int count)
    {
        _Buffers.Enqueue(buffer.Take(count).ToArray()); // add new data to buffer
        _DataReady.Set(); // allow waiting reader to proceed
    }

    public override int Read(byte[] buffer, int offset, int count)
    {
        _DataReady.WaitOne(); // block until there's something new to read

        if (!_Buffers.TryDequeue(out byte[] lBuffer)) // try to read
        {
            _DataReady.Reset();
            return -1;
        }

        if (!DataAvailable)
            _DataReady.Reset();

        Array.Copy(lBuffer, buffer, lBuffer.Length);
        return lBuffer.Length;
    }
}

识别工作正常，除了自动标点符号，尽管启用了“听写”，但仍然有效。

那么一些建议如何禁用自动标点符号？

Answer 1

最后我发现了 Microsoft.CognitiveServices.Speech 包版本 1.34.0 中的问题。

更新到新版本1.34.1“听写模式”也可以使用。

谢谢大家。

皮尔卡洛