// Language Detection with file async
public static async Task LanguageDetectionWithFileAsync()
{
// <languageDetectionInAccuracyWithFile>
// Creates an instance of a speech config with specified subscription key and service region.
// Replace with your own subscription key and service region (e.g., "westus").
var config = SpeechConfig.FromSubscription("YourSubscriptionKey", "YourServiceRegion");
// Single-Shot with Accuracy
// Please refer to the documentation of language id with different modes
config.SetProperty(PropertyId.SpeechServiceConnection_SingleLanguageIdPriority, "Accuracy");
// Creates a speech recognizer using file as audio input.
// Replace with your own audio file name.
using (var audioInput = AudioConfig.FromWavFileInput(@"LanguageDetection_enUS.wav"))
{
using (var recognizer = new SourceLanguageRecognizer(config, autoDetectSourceLanguageConfig, audioInput))
{
// Starts recognizing.
Console.WriteLine("Say something...");
// Starts language detection, and returns after a single utterance is recognized.
// The task returns the recognition text as result.
// Note: Since RecognizeOnceAsync() returns only a single utterance, it is suitable only for single
// shot detection like command or query.
// For long-running multi-utterance detection, use StartContinuousRecognitionAsync() instead.
var result = await recognizer.RecognizeOnceAsync().ConfigureAwait(false);
// Checks result.
if (result.Reason == ResultReason.RecognizedSpeech)
{
var lidResult = AutoDetectSourceLanguageResult.FromResult(result);
Console.WriteLine($"DETECTED: Language={lidResult.Language}");
}
else if (result.Reason == ResultReason.NoMatch)
{
Console.WriteLine($"NOMATCH: Speech could not be recognized.");
}
else if (result.Reason == ResultReason.Canceled)
{
var cancellation = CancellationDetails.FromResult(result);
Console.WriteLine($"CANCELED: Reason={cancellation.Reason}");
if (cancellation.Reason == CancellationReason.Error)
{
Console.WriteLine($"CANCELED: ErrorCode={cancellation.ErrorCode}");
Console.WriteLine($"CANCELED: ErrorDetails={cancellation.ErrorDetails}");
Console.WriteLine($"CANCELED: Did you update the subscription info?");
}
}
}
}
// </languageDetectionInAccuracyWithFile>
}
public static async Task RunAsync([EventGridTrigger] EventGridEvent eventGridEvent, ILogger log)
{
//Extracting content type and url of the blob triggering the function
var jsondata = JsonConvert.SerializeObject(eventGridEvent.Data);
var tmp = new { contentType = "", url = "" };
var data = JsonConvert.DeserializeAnonymousType(jsondata, tmp);
//Checking if the trigger was iniatiated for a WAV File.
if (data.contentType == "audio/wav")
{
var audioUrl = data.url;
string blobName = audioUrl.Split('/').Last();
string contosoStorageConnectionString = System.Environment.GetEnvironmentVariable("ContosoStorageConnectionString", EnvironmentVariableTarget.Process);
string speechRegion = System.Environment.GetEnvironmentVariable("SpeechRegion", EnvironmentVariableTarget.Process);
string speechKey = System.Environment.GetEnvironmentVariable("SpeechKey", EnvironmentVariableTarget.Process);
string translatorKey = System.Environment.GetEnvironmentVariable("TranslatorKey", EnvironmentVariableTarget.Process);
string translatorEndpoint = System.Environment.GetEnvironmentVariable("TranslatorEndpoint", EnvironmentVariableTarget.Process);
string translatorLocation = System.Environment.GetEnvironmentVariable("TranslatorLocation", EnvironmentVariableTarget.Process);
string cosmosEndpointUrl = System.Environment.GetEnvironmentVariable("CosmosDBEndpointUrl", EnvironmentVariableTarget.Process);
string cosmosPrimaryKey = System.Environment.GetEnvironmentVariable("CosmosDBPrimaryKey", EnvironmentVariableTarget.Process);
string textAnalyticsKey = System.Environment.GetEnvironmentVariable("TextAnalyticsKey", EnvironmentVariableTarget.Process);
string textAnalyticsEndpoint = System.Environment.GetEnvironmentVariable("TextAnalyticsEndpoint", EnvironmentVariableTarget.Process);
// Download audio file to a local temp directory
var tempPath = System.IO.Path.GetTempFileName();
BlobContainerClient container = new BlobContainerClient(contosoStorageConnectionString, "audiorecordings");
BlobClient blob = container.GetBlobClient(blobName);
await blob.DownloadToAsync(tempPath);
var speechConfig = SpeechConfig.FromSubscription(speechKey, speechRegion);
speechConfig.SetProperty(PropertyId.SpeechServiceConnection_SingleLanguageIdPriority, "Latency");
// Audio Language Identification
// Considering only two languages: English and Spanish
// Languages supported for language detection : https://docs.microsoft.com/azure/cognitive-services/speech-service/language-support
var autoDetectSourceLanguageConfig = AutoDetectSourceLanguageConfig.FromLanguages(new string[] { "en-US", "es-MX" });
string languageDetected = "en-US";
using (var audioInput = AudioConfig.FromWavFileInput(tempPath))
{
using (var recognizer = new SourceLanguageRecognizer(speechConfig, autoDetectSourceLanguageConfig, audioInput))
{
var result = await recognizer.RecognizeOnceAsync().ConfigureAwait(false);
if (result.Reason == ResultReason.RecognizedSpeech)
{
var lidResult = AutoDetectSourceLanguageResult.FromResult(result);
languageDetected = lidResult.Language;
}
}
}
speechConfig.SpeechRecognitionLanguage = languageDetected;
// Audio Transcription
StringBuilder sb = new StringBuilder();
using var audioConfig = AudioConfig.FromWavFileInput(tempPath);
{
using var recognizer = new SpeechRecognizer(speechConfig, audioConfig);
{
var stopRecognition = new TaskCompletionSource <int>();
recognizer.SessionStopped += (s, e) =>
{
stopRecognition.TrySetResult(0);
};
recognizer.Canceled += (s, e) =>
{
stopRecognition.TrySetResult(0);
};
recognizer.Recognized += (s, e) =>
{
if (e.Result.Reason == ResultReason.RecognizedSpeech)
{
sb.Append(e.Result.Text);
}
else if (e.Result.Reason == ResultReason.NoMatch)
{
log.LogInformation($"NOMATCH: Speech could not be recognized.");
}
};
await recognizer.StartContinuousRecognitionAsync();
Task.WaitAny(new[] { stopRecognition.Task });
}
}
string transcribedText = sb.ToString();
// If transcription is in Spanish we will translate it to English
if (!languageDetected.Contains("en"))
{
string route = $"/translate?api-version=3.0&to=en";
string textToTranslate = sb.ToString();
object[] body = new object[] { new { Text = textToTranslate } };
var requestBody = JsonConvert.SerializeObject(body);
using (var client = new HttpClient())
using (var request = new HttpRequestMessage())
{
request.Method = HttpMethod.Post;
request.RequestUri = new Uri(translatorEndpoint + route);
request.Content = new StringContent(requestBody, Encoding.UTF8, "application/json");
request.Headers.Add("Ocp-Apim-Subscription-Key", translatorKey);
request.Headers.Add("Ocp-Apim-Subscription-Region", translatorLocation);
HttpResponseMessage response = await client.SendAsync(request).ConfigureAwait(false);
var responseBody = await response.Content.ReadAsStringAsync();
List <Model.TranslatorService.Root> translatedDocuments = JsonConvert.DeserializeObject <List <Model.TranslatorService.Root> >(responseBody);
transcribedText = translatedDocuments.FirstOrDefault().Translations.FirstOrDefault().Text;
}
}
//TODO:Azure Text Analytics for Healthcare
//Insert documents into CosmosDB
var cosmosClient = new CosmosClient(cosmosEndpointUrl, cosmosPrimaryKey);
var cosmosDatabase = (await cosmosClient.CreateDatabaseIfNotExistsAsync("Contoso")).Database;
var cosmosContainer = (await cosmosDatabase.CreateContainerIfNotExistsAsync("Transcriptions", "/id")).Container;
Model.Transcription newTranscription = new Model.Transcription();
newTranscription.Id = Guid.NewGuid().ToString();
newTranscription.DocumentDate = new DateTime(int.Parse(blobName.Substring(0, 4)),
int.Parse(blobName.Substring(4, 2)), int.Parse(blobName.Substring(6, 2)));
newTranscription.FileName = blobName;
newTranscription.TranscribedText = transcribedText;
foreach (var item in healthcareResult.Entities)
{
newTranscription.HealthcareEntities.Add(new Model.HealthcareEntity()
{
Category = item.Category, Text = item.Text
});
}
try
{
ItemResponse <Model.Transcription> cosmosResponse = await
cosmosContainer.CreateItemAsync(newTranscription, new PartitionKey(newTranscription.Id));
}
catch (CosmosException ex) when(ex.StatusCode == System.Net.HttpStatusCode.Conflict)
{
//Conflicting documents are silently ignored for demo purposes.
}
System.IO.File.Delete(tempPath);
log.LogInformation(eventGridEvent.Data.ToString());
}
}