public void TextToSpeech()
{
_log.Information("Testing speech synthesis. WARNING! Synthesised text wull be played out on default audio device!");
_log.Information("Enter text to synthesize, then press Enter.");
string text = Console.ReadLine();
if (string.IsNullOrEmpty(text))
{
_log.Error("Empty text!");
return;
}
var speechKit = new SpeechKitApi(_fullAuthorizer, _configuration["FolderId"]);
var data = speechKit.SynthesizeSpeechAsync(
text,
AudioFormat.PCM,
speed: 0.8f,
emotion: Emotion.Good).Result;
_log.Information("Playing back synthesised text.");
var evt = new ManualResetEventSlim();
var waveOut = new WaveOutEvent();
var provider = new RawSourceWaveStream(data, 0, data.Length, new WaveFormat(48000, 16, 1));
waveOut.PlaybackStopped += (sender, args) => evt.Set();
waveOut.Init(provider);
waveOut.Play();
evt.Wait();
_log.Information("Playback finished.");
}
public void SpeechRecognition()
{
_log.Information("Testing speech recognition.");
_log.Information("Press any key when ready to speak. Then press any key again to stop recording.");
using var stream = new MemoryStream();
var waveIn = new WaveInEvent();
waveIn.WaveFormat = new WaveFormat(48000, 16, 1);
waveIn.DataAvailable += (sender, args) => stream.Write(args.Buffer, 0, args.BytesRecorded);
Console.ReadKey();
_log.Information("Recording. Press any key when ready.");
waveIn.StartRecording();
Console.ReadKey();
waveIn.StopRecording();
waveIn.Dispose();
_log.Information("Recording stopped.");
var data = stream.ToArray();
var speechKit = new SpeechKitApi(_fullAuthorizer, _configuration["FolderId"]);
_log.Information("Testing with PCM format.");
try
{
string text = speechKit.RecognizeTextAsync(data, AudioFormat.PCM).Result;
_log.Information($"Recognized text: {text}");
}
catch (Exception e)
{
_log.Error(e, "Recognition failed");
}
_log.Information("Converting to OPUS");
byte[] oggData;
try
{
oggData = new AudioConverter().ConvertPcmToOpusAsync(data, waveIn.WaveFormat).Result;
}
catch (Exception e)
{
_log.Error(e, "Conversion failed");
return;
}
try
{
string text = speechKit.RecognizeTextAsync(oggData, AudioFormat.OggOpus).Result;
_log.Information($"Recognized text: {text}");
}
catch (Exception e)
{
_log.Error(e, "Recognition failed");
}
}
