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Copy pathtranscribeContextClasses.js
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80 lines (67 loc) · 2.6 KB
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// Copyright 2020 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
'use strict';
// sample-metadata:
// title: Transcribe Context Classes
// description: Provides "hints" to the speech recognizer to favor specific words and phrases in the results.
// usage: node samples/transcribeContextClasses.js <storageUri>
function main(storageUri) {
// [START speech_transcribe_sync]
// Provides "hints" to the speech recognizer to favor
// specific classes of words in the results.
// Imports the Google Cloud client library
const speech = require('@google-cloud/speech');
// Creates a client
const client = new speech.SpeechClient();
async function transcribeContextClasses() {
// storageUri = 'gs://YOUR_BUCKET_ID/path/to/your/file.wav'
const audio = {
uri: storageUri,
};
// SpeechContext: to configure your speech_context see:
// https://cloud.google.com/speech-to-text/docs/reference/rpc/google.cloud.speech.v1#speechcontext
// Full list of supported phrases(class tokens) here:
// https://cloud.google.com/speech-to-text/docs/class-tokens
const speechContext = {
phrases: ['$TIME'],
};
// RecognitionConfig: to configure your encoding and sample_rate_hertz, see:
// https://cloud.google.com/speech-to-text/docs/reference/rpc/google.cloud.speech.v1#recognitionconfig
const config = {
encoding: 'LINEAR16',
sampleRateHertz: 8000,
languageCode: 'en-US',
speechContexts: [speechContext],
};
const request = {
config: config,
audio: audio,
};
// Detects speech in the audio file.
const [response] = await client.recognize(request);
response.results.forEach((result, index) => {
const transcript = result.alternatives[0].transcript;
console.log('-'.repeat(20));
console.log(`First alternative of result ${index}`);
console.log(`Transcript: ${transcript}`);
});
}
transcribeContextClasses();
// [END speech_transcribe_sync]
}
process.on('unhandledRejection', err => {
console.error(err.message);
process.exitCode = 1;
});
main(...process.argv.slice(2));