asr.js

const speech = require('@google-cloud/speech');
const fs = require('fs');
const linear16 = require('linear16');
 

module.exports = async () => {

  // Creates a client
  const client = new speech.SpeechClient();

  // The name of the audio file to transcribe
  const fileName = './audio.wav';


  await linear16('./audio.mp3', './audio.wav');


  // Reads a local audio file and converts it to base64
  const file = fs.readFileSync(fileName);
  const audioBytes = file.toString('base64');

  // The audio file's encoding, sample rate in hertz, and BCP-47 language code
  const audio = {
    content: audioBytes,
  };
  const config = {
    encoding: 'LINEAR16',
    sampleRateHertz: 16000,
    languageCode: 'ru-RU',
  };
  const request = {
    audio: audio,
    config: config,
  };

  // Detects speech in the audio file
  const [response] = await client.recognize(request);
  const transcription = response.results
    .map(result => result.alternatives[0].transcript)
    .join('\n');

  return transcription;
}

process.on('unhandledRejection', console.error)