Synchronously recognizes punctuation

Performs transcription with automatic punctuation on raw PCM audio data.

Code sample

Java

To learn how to install and use the client library for Cloud STT, see Cloud STT client libraries. For more information, see the Cloud STT Java API reference documentation.

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/**
 * Performs transcription with automatic punctuation on raw PCM audio data.
 *
 * @param fileName the path to a PCM audio file to transcribe.
 */
public static void transcribeFileWithAutomaticPunctuation(String fileName) throws Exception {
  Path path = Paths.get(fileName);
  byte[] content = Files.readAllBytes(path);

  try (SpeechClient speechClient = SpeechClient.create()) {
    // Configure request with local raw PCM audio
    RecognitionConfig recConfig =
        RecognitionConfig.newBuilder()
            .setEncoding(AudioEncoding.LINEAR16)
            .setLanguageCode("en-US")
            .setSampleRateHertz(16000)
            .setEnableAutomaticPunctuation(true)
            .build();

    // Get the contents of the local audio file
    RecognitionAudio recognitionAudio =
        RecognitionAudio.newBuilder().setContent(ByteString.copyFrom(content)).build();

    // Perform the transcription request
    RecognizeResponse recognizeResponse = speechClient.recognize(recConfig, recognitionAudio);

    // Just print the first result here.
    SpeechRecognitionResult result = recognizeResponse.getResultsList().get(0);

    // There can be several alternative transcripts for a given chunk of speech. Just use the
    // first (most likely) one here.
    SpeechRecognitionAlternative alternative = result.getAlternativesList().get(0);

    // Print out the result
    System.out.printf("Transcript : %s\n", alternative.getTranscript());
  }
}

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