Trascrivi l'audio e ottieni dati di lavoro con Amazon Transcribe utilizzando un AWS SDK - Esempi di codice dell'AWS SDK

Ci sono altri AWS SDK esempi disponibili nel repository AWS Doc SDK Examples GitHub .

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Trascrivi l'audio e ottieni dati di lavoro con Amazon Transcribe utilizzando un AWS SDK

Gli esempi di codice seguenti mostrano come:

  • Avviare un processo di trascrizione con Amazon Transcribe.

  • Attendi il completamento del processo .

  • Scopri URI dove è archiviata la trascrizione.

Per ulteriori informazioni, consulta Nozioni di base su Amazon Transcribe.

Java
SDKper Java 2.x
Nota

C'è di più su. GitHub Trova l'esempio completo e scopri di più sulla configurazione e l'esecuzione nel Repository di esempi di codice AWS.

Trascrive un PCM file.

/** * To run this AWS code example, ensure that you have set up your development * environment, including your AWS credentials. * * For information, see this documentation topic: * * https://docs.aws.amazon.com/sdk-for-java/latest/developer-guide/get-started.html */ public class TranscribeStreamingDemoFile { private static final Region REGION = Region.US_EAST_1; private static TranscribeStreamingAsyncClient client; public static void main(String args[]) throws ExecutionException, InterruptedException { final String USAGE = "\n" + "Usage:\n" + " <file> \n\n" + "Where:\n" + " file - the location of a PCM file to transcribe. In this example, ensure the PCM file is 16 hertz (Hz). \n"; if (args.length != 1) { System.out.println(USAGE); System.exit(1); } String file = args[0]; client = TranscribeStreamingAsyncClient.builder() .region(REGION) .build(); CompletableFuture<Void> result = client.startStreamTranscription(getRequest(16_000), new AudioStreamPublisher(getStreamFromFile(file)), getResponseHandler()); result.get(); client.close(); } private static InputStream getStreamFromFile(String file) { try { File inputFile = new File(file); InputStream audioStream = new FileInputStream(inputFile); return audioStream; } catch (FileNotFoundException e) { throw new RuntimeException(e); } } private static StartStreamTranscriptionRequest getRequest(Integer mediaSampleRateHertz) { return StartStreamTranscriptionRequest.builder() .languageCode(LanguageCode.EN_US) .mediaEncoding(MediaEncoding.PCM) .mediaSampleRateHertz(mediaSampleRateHertz) .build(); } private static StartStreamTranscriptionResponseHandler getResponseHandler() { return StartStreamTranscriptionResponseHandler.builder() .onResponse(r -> { System.out.println("Received Initial response"); }) .onError(e -> { System.out.println(e.getMessage()); StringWriter sw = new StringWriter(); e.printStackTrace(new PrintWriter(sw)); System.out.println("Error Occurred: " + sw.toString()); }) .onComplete(() -> { System.out.println("=== All records stream successfully ==="); }) .subscriber(event -> { List<Result> results = ((TranscriptEvent) event).transcript().results(); if (results.size() > 0) { if (!results.get(0).alternatives().get(0).transcript().isEmpty()) { System.out.println(results.get(0).alternatives().get(0).transcript()); } } }) .build(); } private static class AudioStreamPublisher implements Publisher<AudioStream> { private final InputStream inputStream; private static Subscription currentSubscription; private AudioStreamPublisher(InputStream inputStream) { this.inputStream = inputStream; } @Override public void subscribe(Subscriber<? super AudioStream> s) { if (this.currentSubscription == null) { this.currentSubscription = new SubscriptionImpl(s, inputStream); } else { this.currentSubscription.cancel(); this.currentSubscription = new SubscriptionImpl(s, inputStream); } s.onSubscribe(currentSubscription); } } public static class SubscriptionImpl implements Subscription { private static final int CHUNK_SIZE_IN_BYTES = 1024 * 1; private final Subscriber<? super AudioStream> subscriber; private final InputStream inputStream; private ExecutorService executor = Executors.newFixedThreadPool(1); private AtomicLong demand = new AtomicLong(0); SubscriptionImpl(Subscriber<? super AudioStream> s, InputStream inputStream) { this.subscriber = s; this.inputStream = inputStream; } @Override public void request(long n) { if (n <= 0) { subscriber.onError(new IllegalArgumentException("Demand must be positive")); } demand.getAndAdd(n); executor.submit(() -> { try { do { ByteBuffer audioBuffer = getNextEvent(); if (audioBuffer.remaining() > 0) { AudioEvent audioEvent = audioEventFromBuffer(audioBuffer); subscriber.onNext(audioEvent); } else { subscriber.onComplete(); break; } } while (demand.decrementAndGet() > 0); } catch (Exception e) { subscriber.onError(e); } }); } @Override public void cancel() { executor.shutdown(); } private ByteBuffer getNextEvent() { ByteBuffer audioBuffer = null; byte[] audioBytes = new byte[CHUNK_SIZE_IN_BYTES]; int len = 0; try { len = inputStream.read(audioBytes); if (len <= 0) { audioBuffer = ByteBuffer.allocate(0); } else { audioBuffer = ByteBuffer.wrap(audioBytes, 0, len); } } catch (IOException e) { throw new UncheckedIOException(e); } return audioBuffer; } private AudioEvent audioEventFromBuffer(ByteBuffer bb) { return AudioEvent.builder() .audioChunk(SdkBytes.fromByteBuffer(bb)) .build(); } } }

Trascrive l'audio in streaming dal microfono del computer.

public class TranscribeStreamingDemoApp { private static final Region REGION = Region.US_EAST_1; private static TranscribeStreamingAsyncClient client; public static void main(String args[]) throws URISyntaxException, ExecutionException, InterruptedException, LineUnavailableException { client = TranscribeStreamingAsyncClient.builder() .credentialsProvider(getCredentials()) .region(REGION) .build(); CompletableFuture<Void> result = client.startStreamTranscription(getRequest(16_000), new AudioStreamPublisher(getStreamFromMic()), getResponseHandler()); result.get(); client.close(); } private static InputStream getStreamFromMic() throws LineUnavailableException { // Signed PCM AudioFormat with 16kHz, 16 bit sample size, mono int sampleRate = 16000; AudioFormat format = new AudioFormat(sampleRate, 16, 1, true, false); DataLine.Info info = new DataLine.Info(TargetDataLine.class, format); if (!AudioSystem.isLineSupported(info)) { System.out.println("Line not supported"); System.exit(0); } TargetDataLine line = (TargetDataLine) AudioSystem.getLine(info); line.open(format); line.start(); InputStream audioStream = new AudioInputStream(line); return audioStream; } private static AwsCredentialsProvider getCredentials() { return DefaultCredentialsProvider.create(); } private static StartStreamTranscriptionRequest getRequest(Integer mediaSampleRateHertz) { return StartStreamTranscriptionRequest.builder() .languageCode(LanguageCode.EN_US.toString()) .mediaEncoding(MediaEncoding.PCM) .mediaSampleRateHertz(mediaSampleRateHertz) .build(); } private static StartStreamTranscriptionResponseHandler getResponseHandler() { return StartStreamTranscriptionResponseHandler.builder() .onResponse(r -> { System.out.println("Received Initial response"); }) .onError(e -> { System.out.println(e.getMessage()); StringWriter sw = new StringWriter(); e.printStackTrace(new PrintWriter(sw)); System.out.println("Error Occurred: " + sw.toString()); }) .onComplete(() -> { System.out.println("=== All records stream successfully ==="); }) .subscriber(event -> { List<Result> results = ((TranscriptEvent) event).transcript().results(); if (results.size() > 0) { if (!results.get(0).alternatives().get(0).transcript().isEmpty()) { System.out.println(results.get(0).alternatives().get(0).transcript()); } } }) .build(); } private InputStream getStreamFromFile(String audioFileName) { try { File inputFile = new File(getClass().getClassLoader().getResource(audioFileName).getFile()); InputStream audioStream = new FileInputStream(inputFile); return audioStream; } catch (FileNotFoundException e) { throw new RuntimeException(e); } } private static class AudioStreamPublisher implements Publisher<AudioStream> { private final InputStream inputStream; private static Subscription currentSubscription; private AudioStreamPublisher(InputStream inputStream) { this.inputStream = inputStream; } @Override public void subscribe(Subscriber<? super AudioStream> s) { if (this.currentSubscription == null) { this.currentSubscription = new SubscriptionImpl(s, inputStream); } else { this.currentSubscription.cancel(); this.currentSubscription = new SubscriptionImpl(s, inputStream); } s.onSubscribe(currentSubscription); } } public static class SubscriptionImpl implements Subscription { private static final int CHUNK_SIZE_IN_BYTES = 1024 * 1; private final Subscriber<? super AudioStream> subscriber; private final InputStream inputStream; private ExecutorService executor = Executors.newFixedThreadPool(1); private AtomicLong demand = new AtomicLong(0); SubscriptionImpl(Subscriber<? super AudioStream> s, InputStream inputStream) { this.subscriber = s; this.inputStream = inputStream; } @Override public void request(long n) { if (n <= 0) { subscriber.onError(new IllegalArgumentException("Demand must be positive")); } demand.getAndAdd(n); executor.submit(() -> { try { do { ByteBuffer audioBuffer = getNextEvent(); if (audioBuffer.remaining() > 0) { AudioEvent audioEvent = audioEventFromBuffer(audioBuffer); subscriber.onNext(audioEvent); } else { subscriber.onComplete(); break; } } while (demand.decrementAndGet() > 0); } catch (Exception e) { subscriber.onError(e); } }); } @Override public void cancel() { executor.shutdown(); } private ByteBuffer getNextEvent() { ByteBuffer audioBuffer = null; byte[] audioBytes = new byte[CHUNK_SIZE_IN_BYTES]; int len = 0; try { len = inputStream.read(audioBytes); if (len <= 0) { audioBuffer = ByteBuffer.allocate(0); } else { audioBuffer = ByteBuffer.wrap(audioBytes, 0, len); } } catch (IOException e) { throw new UncheckedIOException(e); } return audioBuffer; } private AudioEvent audioEventFromBuffer(ByteBuffer bb) { return AudioEvent.builder() .audioChunk(SdkBytes.fromByteBuffer(bb)) .build(); } } }
Python
SDKper Python (Boto3)
Nota

C'è di più su. GitHub Trova l'esempio completo e scopri di più sulla configurazione e l'esecuzione nel Repository di esempi di codice AWS.

import time import boto3 def transcribe_file(job_name, file_uri, transcribe_client): transcribe_client.start_transcription_job( TranscriptionJobName=job_name, Media={"MediaFileUri": file_uri}, MediaFormat="wav", LanguageCode="en-US", ) max_tries = 60 while max_tries > 0: max_tries -= 1 job = transcribe_client.get_transcription_job(TranscriptionJobName=job_name) job_status = job["TranscriptionJob"]["TranscriptionJobStatus"] if job_status in ["COMPLETED", "FAILED"]: print(f"Job {job_name} is {job_status}.") if job_status == "COMPLETED": print( f"Download the transcript from\n" f"\t{job['TranscriptionJob']['Transcript']['TranscriptFileUri']}." ) break else: print(f"Waiting for {job_name}. Current status is {job_status}.") time.sleep(10) def main(): transcribe_client = boto3.client("transcribe") file_uri = "s3://test-transcribe/answer2.wav" transcribe_file("Example-job", file_uri, transcribe_client) if __name__ == "__main__": main()