public async Task TranscribeConversationsAsync(IEnumerable <string> voiceSignatureStringUsers)
{
uint samplesPerSecond = 16000;
byte bitsPerSample = 16;
byte channels = 8; // 7 + 1 channels
var config = SpeechConfig.FromSubscription(this.SubscriptionKey, this.Region);
config.SetProperty("ConversationTranscriptionInRoomAndOnline", "true");
var stopRecognition = new TaskCompletionSource <int>();
using (var audioInput = AudioInputStream.CreatePushStream(AudioStreamFormat.GetWaveFormatPCM(samplesPerSecond, bitsPerSample, channels)))
{
var meetingID = Guid.NewGuid().ToString();
using (var conversation = await Conversation.CreateConversationAsync(config, meetingID))
{
// create a conversation transcriber using audio stream input
using (this.conversationTranscriber = new ConversationTranscriber(AudioConfig.FromStreamInput(audioInput)))
{
conversationTranscriber.Transcribing += (s, e) =>
{
this.SetText($"TRANSCRIBING: Text={e.Result.Text} SpeakerId={e.Result.UserId}");
};
conversationTranscriber.Transcribed += (s, e) =>
{
if (e.Result.Reason == ResultReason.RecognizedSpeech)
{
this.SetText($"TRANSCRIBED: Text={e.Result.Text} SpeakerId={e.Result.UserId}");
}
else if (e.Result.Reason == ResultReason.NoMatch)
{
this.SetText($"NOMATCH: Speech could not be recognized.");
}
};
conversationTranscriber.Canceled += (s, e) =>
{
this.SetText($"CANCELED: Reason={e.Reason}");
if (e.Reason == CancellationReason.Error)
{
this.SetText($"CANCELED: ErrorCode={e.ErrorCode}");
this.SetText($"CANCELED: ErrorDetails={e.ErrorDetails}");
this.SetText($"CANCELED: Did you update the subscription info?");
stopRecognition.TrySetResult(0);
}
};
conversationTranscriber.SessionStarted += (s, e) =>
{
this.SetText($"\nSession started event. SessionId={e.SessionId}");
};
conversationTranscriber.SessionStopped += (s, e) =>
{
this.SetText($"\nSession stopped event. SessionId={e.SessionId}");
this.SetText("\nStop recognition.");
stopRecognition.TrySetResult(0);
};
// Add participants to the conversation.
int i = 1;
foreach (var voiceSignatureStringUser in voiceSignatureStringUsers)
{
var speaker = Participant.From($"User{i++}", "en-US", voiceSignatureStringUser);
await conversation.AddParticipantAsync(speaker);
}
// Join to the conversation and start transcribing
await conversationTranscriber.JoinConversationAsync(conversation);
await conversationTranscriber.StartTranscribingAsync().ConfigureAwait(false);
using (var p = Pipeline.Create())
{
var store = PsiStore.Create(p, "Transcribe", @"D:\Temp");
var capture = new AudioCapture(p, WaveFormat.CreatePcm((int)samplesPerSecond, bitsPerSample, channels)).Write("Audio", store);
capture.Do(audio => audioInput.Write(audio.Data));
p.RunAsync();
// waits for completion, then stop transcription
await stopRecognition.Task;
}
await conversationTranscriber.StopTranscribingAsync().ConfigureAwait(false);
}
}
}
}
public static async Task TranscribeConversationsAsync(string conversationWaveFile, string subscriptionKey, string region)
{
var config = SpeechConfig.FromSubscription(subscriptionKey, region);
config.SetProperty("ConversationTranscriptionInRoomAndOnline", "true");
var stopRecognition = new TaskCompletionSource <int>();
// Create an audio stream from a wav file or from the default microphone if you want to stream live audio from the supported devices
using (var audioInput = AudioStreamReader.OpenWavFile(conversationWaveFile))
{
var meetingID = Guid.NewGuid().ToString();
using (var conversation = await Conversation.CreateConversationAsync(config, meetingID))
{
// Create a conversation transcriber using audio stream input
using (var conversationTranscriber = new ConversationTranscriber(audioInput))
{
// Subscribe to events
conversationTranscriber.Transcribing += (s, e) =>
{
Console.WriteLine($"TRANSCRIBING: Text={e.Result.Text} SpeakerId={e.Result.UserId}");
};
conversationTranscriber.Transcribed += (s, e) =>
{
if (e.Result.Reason == ResultReason.RecognizedSpeech)
{
Console.WriteLine($"TRANSCRIBED: Text={e.Result.Text} SpeakerId={e.Result.UserId}");
}
else if (e.Result.Reason == ResultReason.NoMatch)
{
Console.WriteLine($"NOMATCH: Speech could not be recognized.");
}
};
conversationTranscriber.Canceled += (s, e) =>
{
Console.WriteLine($"CANCELED: Reason={e.Reason}");
if (e.Reason == CancellationReason.Error)
{
Console.WriteLine($"CANCELED: ErrorCode={e.ErrorCode}");
Console.WriteLine($"CANCELED: ErrorDetails={e.ErrorDetails}");
Console.WriteLine($"CANCELED: Did you update the subscription info?");
stopRecognition.TrySetResult(0);
}
};
conversationTranscriber.SessionStarted += (s, e) =>
{
Console.WriteLine($"\nSession started event. SessionId={e.SessionId}");
};
conversationTranscriber.SessionStopped += (s, e) =>
{
Console.WriteLine($"\nSession stopped event. SessionId={e.SessionId}");
Console.WriteLine("\nStop recognition.");
stopRecognition.TrySetResult(0);
};
// Add participants to the conversation.
// Voice signature needs to be in the following format:
// { "Version": <Numeric value>, "Tag": "string", "Data": "string" }
var languageForUser1 = "User1PreferredLanguage"; // For example "en-US"
var speakerA = Participant.From("User1", languageForUser1, voiceSignatureUser1);
var languageForUser2 = "User2PreferredLanguage"; // For example "en-US"
var speakerB = Participant.From("User2", languageForUser2, voiceSignatureUser2);
await conversation.AddParticipantAsync(speakerA);
await conversation.AddParticipantAsync(speakerB);
// Join to the conversation.
await conversationTranscriber.JoinConversationAsync(conversation);
// Starts transcribing of the conversation. Uses StopTranscribingAsync() to stop transcribing when all participants leave.
await conversationTranscriber.StartTranscribingAsync().ConfigureAwait(false);
// Waits for completion.
// Use Task.WaitAny to keep the task rooted.
Task.WaitAny(new[] { stopRecognition.Task });
// Stop transcribing the conversation.
await conversationTranscriber.StopTranscribingAsync().ConfigureAwait(false);
}
}
}
}
public static async Task ConversationWithPullAudioStreamAsync(string filePath, string region, string key)
{
// Creates an instance of a speech config with specified subscription key and service region
// Replace with your own subscription key and region
var config = SpeechConfig.FromSubscription(key, region);
config.SetProperty("ConversationTranscriptionInRoomAndOnline", "true");
var stopTranscription = new TaskCompletionSource <int>();
var callback = Helper.CreateWavReader(filePath);
var pullStream = AudioInputStream.CreatePullStream(callback, AudioStreamFormat.GetWaveFormatPCM(16000, 16, 8));
// Create an audio stream from a wav file or from the default microphone if you want to stream live audio from the supported devices
// Replace with your own audio file name and Helper class which implements AudioConfig using PullAudioInputStreamCallback
using (var audioInput = AudioConfig.FromStreamInput(pullStream))
{
var meetingId = Guid.NewGuid().ToString();
using (var conversation = await Conversation.CreateConversationAsync(config, meetingId).ConfigureAwait(false))
{
// Create a conversation transcriber using audio stream input
using (var conversationTranscriber = new ConversationTranscriber(audioInput))
{
await conversationTranscriber.JoinConversationAsync(conversation);
// Subscribe to events
conversationTranscriber.Transcribing += (s, e) =>
{
//Console.WriteLine($"TRANSCRIBING: Text={e.Result.Text}");
};
conversationTranscriber.Transcribed += (s, e) =>
{
if (e.Result.Reason == ResultReason.RecognizedSpeech)
{
if (!String.IsNullOrWhiteSpace(e.Result.Text))
{
Console.WriteLine($"TRANSCRIBED: Text={e.Result.Text}, UserID={e.Result.UserId}");
}
}
else if (e.Result.Reason == ResultReason.NoMatch)
{
Console.WriteLine($"NOMATCH: Speech could not be recognized.");
}
};
conversationTranscriber.Canceled += (s, e) =>
{
Console.WriteLine($"CANCELED: Reason={e.Reason}");
if (e.Reason == CancellationReason.Error)
{
Console.WriteLine($"CANCELED: ErrorCode={e.ErrorCode}");
Console.WriteLine($"CANCELED: ErrorDetails={e.ErrorDetails}");
Console.WriteLine($"CANCELED: Did you update the subscription info?");
stopTranscription.TrySetResult(0);
}
};
conversationTranscriber.SessionStarted += (s, e) =>
{
Console.WriteLine("\nSession started event.");
};
conversationTranscriber.SessionStopped += (s, e) =>
{
Console.WriteLine("\nSession stopped event.");
Console.WriteLine("\nStop recognition.");
stopTranscription.TrySetResult(0);
};
// Add participants to the conversation.
// Create voice signatures using REST API described in the earlier section in this document.
// Voice signature needs to be in the following format:
// { "Version": <Numeric string or integer value>, "Tag": "string", "Data": "string" }
/*
* var speakerA = Participant.From("Katie", "en-us", KatieSignature);
* var speakerB = Participant.From("Steve", "en-us", SteveSignature);
* await conversation.AddParticipantAsync(speakerA);
* await conversation.AddParticipantAsync(speakerB);
*/
// Starts transcribing of the conversation. Uses StopTranscribingAsync() to stop transcribing when all participants leave.
await conversationTranscriber.StartTranscribingAsync().ConfigureAwait(false);
// Waits for completion.
// Use Task.WaitAny to keep the task rooted.
Task.WaitAny(new[] { stopTranscription.Task });
// Stop transcribing the conversation.
await conversationTranscriber.StopTranscribingAsync().ConfigureAwait(false);
}
}
}
}