public async Task RecognizeSpeechAsync(CNMAudioItem cnmAudioItem)
{
var stopRecognition = new TaskCompletionSource <int>();
var factory = _speechFactory ?? SpeechFactory.FromSubscription("77623f52633c426890a6d2bb11116c8b", "westus");
using (var recognizer = factory.CreateSpeechRecognizerWithFileInput(cnmAudioItem.Filename, "es-ES"))
{
recognizer.FinalResultReceived += (s, e) =>
{
if (e.Result.RecognitionStatus == RecognitionStatus.Recognized)
{
cnmAudioItem.AppendTextLine(e.Result.Text);
}
};
recognizer.OnSessionEvent += (s, e) =>
{
if (e.EventType == SessionEventType.SessionStoppedEvent)
{
cnmAudioItem.IsBusy = false;
stopRecognition.TrySetResult(0);
}
};
recognizer.RecognitionErrorRaised += (s, e) =>
{
Console.WriteLine(e.FailureReason);
};
await recognizer.StartContinuousRecognitionAsync().ConfigureAwait(false);
await stopRecognition.Task.ConfigureAwait(false);
await recognizer.StopContinuousRecognitionAsync().ConfigureAwait(false);
}
}
private async void StartProcessWithNewAudio(CNMAudioItem cnmAudioItem)
{
if (_lastAudioSent != null && (DateTime.Now - _lastAudioSent.Value).TotalMilliseconds < 12000)
{
await Task.Delay(12000 - (int)(DateTime.Now - _lastAudioSent.Value).TotalMilliseconds);
}
ResampleAudio(cnmAudioItem.OriginalFilename, cnmAudioItem.Filename);
await RecognizeSpeechAsync(cnmAudioItem);
DetectKeyPhrases(cnmAudioItem);
}
private void Add_PreviewMouseLeftButtonDown(object sender, System.Windows.Input.MouseButtonEventArgs e)
{
var ofd = new OpenFileDialog();
ofd.Filter = "wav files (*.wav)|*.wav";
if (ofd.ShowDialog() == true)
{
var cnmAudioItem = new CNMAudioItem();
cnmAudioItem.IsBusy = true;
cnmAudioItem.Code = Guid.NewGuid().ToString();
cnmAudioItem.Filename = string.Format("{0}.wav", cnmAudioItem.Code);
cnmAudioItem.OriginalFilename = ofd.FileName;
_cnmAudios.Add(cnmAudioItem);
Task.Factory.StartNew(() => StartProcessWithNewAudio(cnmAudioItem));
_lastAudioSent = DateTime.Now;
}
}
public async void DetectKeyPhrases(CNMAudioItem cnmAudioItem)
{
if (string.IsNullOrWhiteSpace(cnmAudioItem.RecognizedText))
{
return;
}
var keyPhraseClient = _keyPhraseClient ?? new KeyPhraseClient("4f2c3df7714f4bbfbc742547624a6f2b");
var keyPhraseRequest = new KeyPhraseRequest();
keyPhraseRequest.Documents.Add(new KeyPhraseDocument {
Id = Guid.NewGuid().ToString(), Text = cnmAudioItem.RecognizedText, Language = "es"
});
var keyPhraseResult = await keyPhraseClient.GetKeyPhrasesAsync(keyPhraseRequest);
if (keyPhraseResult.Errors.Count == 0)
{
var doc = keyPhraseResult.Documents[0];
Dispatcher.BeginInvoke(new Action(() =>
{
cnmAudioItem.KeyPhrases = doc.KeyPhrases;
}), null).Wait();
}
}
