Convert Speech To Text- Nodejs

Hi There ,

I am going to tell you how to convert Audio/Speech/.mp3 and other audio file into Text format.

I will use Nodejs, Bluemix (IBM Cloud Plateform).So let’s start.

You should follow below steps to the same:

Step 1: Register on Bluemix (IBM Cloud Plateform).

Step 2: Login on Bluemix.

Step 3: Crete a service for speech-to-text. And get the username and password for speech-to-text. Link : Create service for speech to text.

Step 4: Start coding.

Step 5: Create a .js file and require speech-to-text and fs just like below code.

var SpeechToTextV1 = require(‘watson-developer-cloud/speech-to-text/v1’); 
var fs = require(‘fs’);

Step 6: Create an object of SpeechToText just like below code.

var speech_to_text = new SpeechToTextV1({
 username: ‘1234567–8765–4267–9e76-fgff34f’,
 password: ‘ABCdefghiJK’
 });

Step 7: Create an array and insert the path of the audio. You can have many audio file in this array.

var files = [‘./music/hello.flac’,’./music/somebody2010.flac’];

Step 8: Create params for every audio, So we will do it in for loop and call speech_to_text.recognize() to convert.Get the response and console it.

for (var file in files) {
 var params = {
    audio: fs.createReadStream(files[file]),
    content_type: ‘audio/flac’,
    timestamps: true,
    word_alternatives_threshold: 0.9,
    keywords: [‘colorado’, ‘tornado’, ‘tornadoes’],
    keywords_threshold: 0.5
 };
speech_to_text.recognize(params, function (error, transcript) {
 if (error)
      console.log(‘Error:’, error);
 else{
    console.log(JSON.stringify(transcript, null, 2));
    console.log(transcript.results[0].alternatives[0].transcript);
   } 
  });
 }

Congratulation ! You did it.

The complete code is here :

var SpeechToTextV1 = require(‘watson-developer-cloud/speech-to-text/v1’);
var fs = require(‘fs’);
var speech_to_text = new SpeechToTextV1({
   username: ‘1234567–8765–4267–9e76-fgff34f’,
   password: ‘ABCdefghiJK’
  });
var files = [‘./music/hello.flac’,’./music/somebody2010.flac’];
for (var file in files) {
 var params = {
     audio: fs.createReadStream(files[file]),
     content_type: ‘audio/flac’,
     timestamps: true,
     word_alternatives_threshold: 0.9,
     keywords: [‘colorado’, ‘tornado’, ‘tornadoes’],
     keywords_threshold: 0.5
  };
speech_to_text.recognize(params, function (error, transcript) {
 if (error)
      console.log(‘Error:’, error);
 else
    console.log(transcript.results[0].alternatives[0].transcript);
  });
 }

HOW TO RUN ABOVE PROGRAM:

/*************************************************************
INSTRUCTIONS:

Step 0: Check the environment setup. (Should installed nodejs,Remove all errors if any).
Step 1: Navigate terminal/command prompt to this directory.
Step 2: Run command: node FILE_NAME.js;
Step 3: See the message in console log;
Step 4: if executed Step 3 successfully then you have text message according to audio. Otherwise go to Step 0.

*************************************************************/