private async Task <string> GetVoiceSignatureString()
{
var audioStream = new MemoryStream();
var writer = new WaveDataWriterClass(audioStream, WaveFormat.Create16kHz1Channel16BitPcm());
using (var p = Pipeline.Create())
{
var capture = new AudioCapture(p, WaveFormat.Create16kHz1Channel16BitPcm());
capture.Do(audio => writer.Write(audio.Data.DeepClone()));
p.RunAsync();
await Task.Delay(5000);
writer.Flush();
}
var content = new ByteArrayContent(audioStream.GetBuffer(), 0, (int)audioStream.Length);
var client = new HttpClient();
client.DefaultRequestHeaders.Add("Ocp-Apim-Subscription-Key", this.SubscriptionKey);
var response = await client.PostAsync($"https://signature.{this.Region}.cts.speech.microsoft.com/api/v1/Signature/GenerateVoiceSignatureFromByteArray", content);
var jsonData = await response.Content.ReadAsStringAsync();
var result = JsonConvert.DeserializeObject <VoiceSignature>(jsonData);
return(JsonConvert.SerializeObject(result.Signature));
}
/// <summary>
/// Creates a RIFF header for the supplied WaveFormat object.
/// </summary>
/// <param name="format">The WaveFormat object.</param>
/// <returns>A byte array containing the RIFF header.</returns>
private static byte[] CreateRiffHeader(WaveFormat format)
{
var formatStream = new MemoryStream();
// Use the helper WaveDataWriterClass to write the RIFF header to a MemoryStream
using (var waveDataWriter = new WaveDataWriterClass(formatStream, format))
{
// Since we only want the header, we don't need to write any data. The header has
// already been written to the MemoryStream so we can just return the stream bytes.
return(formatStream.ToArray());
}
}
