async void OnVerifyAsync(object sender, RoutedEventArgs e)
{
// Take the user's profile ID back from the UI as we haven't stored
// it anywhere.
Guid profileId = Guid.Parse(this.txtProfileId.Text);
// Prompt the user to speak.
await ConfirmMessageAsync("Dismiss the dialog then speak your phrase");
// Wrapper class which uses AudioGraph to record audio to a file over a specified
// period of time.
StorageFile recordedFile =
await CognitiveAudioGraphRecorder.RecordToTemporaryFileAsync(
TimeSpan.FromSeconds(10));
// VerificationClient is my wrapper for the verification REST API.
// It needs my Cognitive speaker recognition API key in order to work.
VerificationClient verificationClient = new VerificationClient(
cognitiveApiKey);
VerificationResult result =
await verificationClient.VerifyRecordedSpeechForProfileIdAsync(
profileId, recordedFile);
// Get rid of the recorded audio file.
await recordedFile.DeleteAsync();
await ConfirmMessageAsync(
$"Your speech was {result.Result}ed with {result.Confidence} confidence");
}
async void OnClearAllAsync(object sender, RoutedEventArgs e)
{
VerificationClient client = new VerificationClient(cognitiveApiKey);
var profiles = await client.GetVerificationProfilesAsync();
foreach (var profile in profiles)
{
await client.RemoveVerificationProfileAsync(profile.VerificationProfileId);
}
}
async void OnGetRandomPhraseAsync(object sender, RoutedEventArgs e)
{
// VerificationClient is my wrapper for the verification REST API.
// It needs my Cognitive speaker recognition API key in order to work.
VerificationClient verificationClient = new VerificationClient(cognitiveApiKey);
// This calls the 'list all supported verification phrases' REST API
// and then simply chooses one of the return phrases at random
string randomlySelectedVerificationPhrase =
await verificationClient.GetRandomVerificationPhraseAsync();
// Display that phrase back in the UI.
this.txtPhrase.Text = randomlySelectedVerificationPhrase;
}
async void OnEnrollAsync(object sender, RoutedEventArgs e)
{
// VerificationClient is my wrapper for the verification REST API.
// It needs my Cognitive speaker recognition API key in order to work.
VerificationClient verificationClient = new VerificationClient(cognitiveApiKey);
// This calls the 'create profile' REST API and returns the GUID of the
// new profile.
Guid profileId = await verificationClient.AddVerificationProfileAsync();
// Display the profile ID in the UI.
this.txtProfileId.Text = profileId.ToString();
bool enrolled = false;
do
{
await ConfirmMessageAsync("Dismiss this dialog then say your phrase");
// Wrapper class which uses AudioGraph to record audio to a file over a specified
// period of time.
StorageFile recordedAudioFile =
await CognitiveAudioGraphRecorder.RecordToTemporaryFileAsync(TimeSpan.FromSeconds(10));
// This calls the 'create enrollment' API with the speech stream and
// decodes the returned JSON.
VerificationEnrollmentResult result =
await verificationClient.EnrollRecordedSpeechForProfileIdAsync(
profileId, recordedAudioFile);
// Get rid of the recorded speech.
await recordedAudioFile.DeleteAsync();
// Do we need to do more enrollments? Note - this check is probably
// over-simplistic.
enrolled = (result.RemainingEnrollments == 0);
} while (!enrolled);
}