Transcribe a file with word-level confidence (beta)
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Transcribe an audio file, returning the confidence level for each word.
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For detailed documentation that includes this code sample, see the following:
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[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Hard to understand","hardToUnderstand","thumb-down"],["Incorrect information or sample code","incorrectInformationOrSampleCode","thumb-down"],["Missing the information/samples I need","missingTheInformationSamplesINeed","thumb-down"],["Other","otherDown","thumb-down"]],[],[],[],null,["# Transcribe a file with word-level confidence (beta)\n\nTranscribe an audio file, returning the confidence level for each word.\n\nExplore further\n---------------\n\n\nFor detailed documentation that includes this code sample, see the following:\n\n- [Enable word-level confidence](/speech-to-text/docs/word-confidence)\n- [Enable word-level confidence](/speech-to-text/v2/docs/word-confidence)\n\nCode sample\n-----------\n\n### Java\n\n\nTo learn how to install and use the client library for Speech-to-Text, see\n[Speech-to-Text client libraries](/speech-to-text/docs/client-libraries).\n\n\nFor more information, see the\n[Speech-to-Text Java API\nreference documentation](/java/docs/reference/google-cloud-speech/latest/overview).\n\n\nTo authenticate to Speech-to-Text, set up Application Default Credentials.\nFor more information, see\n\n[Set up authentication for a local development environment](/docs/authentication/set-up-adc-local-dev-environment).\n\n /**\n * Transcribe a local audio file with word level confidence\n *\n * @param fileName the path to the local audio file\n */\n public static void transcribeWordLevelConfidence(String fileName) throws Exception {\n Path path = Paths.get(fileName);\n byte[] content = Files.readAllBytes(path);\n\n try (SpeechClient speechClient = SpeechClient.create()) {\n RecognitionAudio recognitionAudio =\n RecognitionAudio.newBuilder().setContent(ByteString.copyFrom(content)).build();\n // Configure request to enable word level confidence\n RecognitionConfig config =\n RecognitionConfig.newBuilder()\n .setEncoding(AudioEncoding.LINEAR16)\n .setSampleRateHertz(16000)\n .setLanguageCode(\"en-US\")\n .setEnableWordConfidence(true)\n .build();\n // Perform the transcription request\n RecognizeResponse recognizeResponse = speechClient.recognize(config, recognitionAudio);\n\n // Print out the results\n for (SpeechRecognitionResult result : recognizeResponse.getResultsList()) {\n // There can be several alternative transcripts for a given chunk of speech. Just use the\n // first (most likely) one here.\n SpeechRecognitionAlternative alternative = result.getAlternatives(0);\n System.out.format(\"Transcript : %s\\n\", alternative.getTranscript());\n System.out.format(\n \"First Word and Confidence : %s %s \\n\",\n alternative.getWords(0).getWord(), alternative.getWords(0).getConfidence());\n }\n }\n }\n\n### Node.js\n\n\nTo learn how to install and use the client library for Speech-to-Text, see\n[Speech-to-Text client libraries](/speech-to-text/docs/client-libraries).\n\n\nFor more information, see the\n[Speech-to-Text Node.js API\nreference documentation](/nodejs/docs/reference/speech/latest).\n\n\nTo authenticate to Speech-to-Text, set up Application Default Credentials.\nFor more information, see\n\n[Set up authentication for a local development environment](/docs/authentication/set-up-adc-local-dev-environment).\n\n const fs = require('fs');\n\n // Imports the Google Cloud client library\n const speech = require('https://cloud.google.com/nodejs/docs/reference/speech/latest/overview.html').v1p1beta1;\n\n // Creates a client\n const client = new speech.https://cloud.google.com/nodejs/docs/reference/speech/latest/overview.html();\n\n /**\n * TODO(developer): Uncomment the following lines before running the sample.\n */\n // const fileName = 'Local path to audio file, e.g. /path/to/audio.raw';\n\n const config = {\n encoding: 'FLAC',\n sampleRateHertz: 16000,\n languageCode: 'en-US',\n enableWordConfidence: true,\n };\n\n const audio = {\n content: fs.readFileSync(fileName).toString('base64'),\n };\n\n const request = {\n config: config,\n audio: audio,\n };\n\n const [response] = await client.recognize(request);\n const transcription = response.results\n .map(result =\u003e result.alternatives[0].transcript)\n .join('\\n');\n const confidence = response.results\n .map(result =\u003e result.alternatives[0].confidence)\n .join('\\n');\n console.log(`Transcription: ${transcription} \\n Confidence: ${confidence}`);\n\n console.log('Word-Level-Confidence:');\n const words = response.results.map(result =\u003e result.alternatives[0]);\n words[0].words.forEach(a =\u003e {\n console.log(` word: ${a.word}, confidence: ${a.confidence}`);\n });\n\n### Python\n\n\nTo learn how to install and use the client library for Speech-to-Text, see\n[Speech-to-Text client libraries](/speech-to-text/docs/client-libraries).\n\n\nFor more information, see the\n[Speech-to-Text Python API\nreference documentation](/python/docs/reference/speech/latest).\n\n\nTo authenticate to Speech-to-Text, set up Application Default Credentials.\nFor more information, see\n\n[Set up authentication for a local development environment](/docs/authentication/set-up-adc-local-dev-environment).\n\n from google.cloud import speech_v1p1beta1 as speech\n\n client = speech.SpeechClient()\n\n speech_file = \"resources/Google_Gnome.wav\"\n\n with open(speech_file, \"rb\") as audio_file:\n content = audio_file.read()\n\n audio = speech.RecognitionAudio(content=content)\n\n config = speech.RecognitionConfig(\n encoding=speech.RecognitionConfig.AudioEncoding.LINEAR16,\n sample_rate_hertz=16000,\n language_code=\"en-US\",\n enable_word_confidence=True,\n )\n\n response = client.recognize(config=config, audio=audio)\n\n for i, result in enumerate(response.results):\n alternative = result.alternatives[0]\n print(\"-\" * 20)\n print(f\"First alternative of result {i}\")\n print(f\"Transcript: {alternative.transcript}\")\n print(\n \"First Word and Confidence: ({}, {})\".format(\n alternative.words[0].word, alternative.words[0].confidence\n )\n )\n\n return response.results\n\nWhat's next\n-----------\n\n\nTo search and filter code samples for other Google Cloud products, see the\n[Google Cloud sample browser](/docs/samples?product=speech)."]]