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Amazon Polly

Amazon Polly converts text into lifelike speech in a variety of voices and languages.

See Amazon Polly Developer Guide for general guidance using Polly.

API Access​

The IPollyClient interface and its implementation TPollyClient provides access to all Polly operations.

Synthesizing Speech​

Use SynthesizeSpeech to convert text to audio. The response contains an AudioStream that can be saved to a file:

var
  Client: IPollyClient;
  Request: IPollySynthesizeSpeechRequest;
  Response: IPollySynthesizeSpeechResponse;
  FileStream: TFileStream;
begin
  Client := TPollyClient.Create;

  Request := TPollySynthesizeSpeechRequest.Create;
  Request.Text := 'Hello from Amazon Polly.';
  Request.VoiceId := 'Amy';
  Request.Engine := 'neural';
  Request.OutputFormat := 'mp3';

  Response := Client.SynthesizeSpeech(Request);

  FileStream := TFileStream.Create('output.mp3', fmCreate);
  try
    FileStream.CopyFrom(Response.AudioStream);
  finally
    FileStream.Free;
  end;
end.

Other Operations​