|

|  How to Implement Twilio Media Streams API for Voice Transcription in JavaScript

How to Implement Twilio Media Streams API for Voice Transcription in JavaScript

October 31, 2024

Discover how to use the Twilio Media Streams API for real-time voice transcription with JavaScript in this step-by-step guide. Ideal for developers at any level.

How to Implement Twilio Media Streams API for Voice Transcription in JavaScript

 

Set Up Environment for Twilio Media Streams

 

  • Ensure you have Node.js installed. Use the latest stable version for best compatibility with Twilio's APIs.
  •  

  • Install the Twilio Node.js SDK by running the command in your project directory:

 

npm install twilio

 

Configure Your Twilio Client

 

  • Import the Twilio module and initialize the client with your Account SID and Auth Token.

 

const twilio = require('twilio');
const client = new twilio('YOUR_ACCOUNT_SID', 'YOUR_AUTH_TOKEN');

 

Set Up WebSocket Server

 

  • Prepare a WebSocket server to handle incoming media streams. You’ll need an HTTP server and a WebSocket server.
  • Use the 'ws' library for WebSocket communication.

 

const WebSocket = require('ws');
const http = require('http');

const server = http.createServer();
const wss = new WebSocket.Server({ server });

wss.on('connection', (ws) => {
    console.log('New WebSocket connection established');
    
    ws.on('message', (message) => {
        console.log(`Received message: ${message}`);
        // Transcription logic goes here
    });
    
    ws.on('close', () => {
        console.log('WebSocket connection closed');
    });
});

server.listen(8080, () => {
    console.log('Listening on port 8080');
});

 

Integrate Twilio Media Streams with WebSocket

 

  • Configure your Twilio Voice response to stream the media to your WebSocket server.

 

const express = require('express');
const VoiceResponse = twilio.twiml.VoiceResponse;

const app = express();
app.post('/twilio-media-stream', (req, res) => {
    const response = new VoiceResponse();
    const connect = response.connect();
    connect.stream({
        url: 'wss://your-ngrok-url/ws'
    });
    
    res.type('text/xml');
    res.send(response.toString());
});

app.listen(3000, () => {
    console.log('Express server listening on port 3000');
});

 

Utilize Ngrok for Local Testing

 

  • Use Ngrok to expose your local server to the internet and test the WebSocket connection with Twilio.
  • Start Ngrok by running the following command:

 

ngrok http 3000

 

Handle Incoming Audio and Transcription

 

  • Process audio data received over WebSocket and integrate with a transcription service like Google’s Speech-to-Text API.

 

const speech = require('@google-cloud/speech');
const client = new speech.SpeechClient();

async function transcribeAudio(message) {
    const request = {
        audio: {
            content: message
        },
        config: {
            encoding: 'MULAW',
            sampleRateHertz: 8000,
            languageCode: 'en-US'
        }
    };

    const [response] = await client.recognize(request);
    const transcription = response.results
        .map(result => result.alternatives[0].transcript)
        .join('\n');
    console.log(`Transcription: ${transcription}`);
}

wss.on('connection', (ws) => {
    ws.on('message', async (message) => {
        await transcribeAudio(message);
    });
});

 

Final Testing

 

  • After setting everything up, make a test call to your Twilio number and ensure that audio is streamed through your WebSocket and transcribed appropriately.
  • Debug any issues that arise during the process, ensuring all WebSocket messages are being received and processed correctly.

 

Limited Beta: Claim Your Dev Kit and Start Building Today

Instant transcription

Access hundreds of community apps

Sync seamlessly on iOS & Android

Order Now

Turn Ideas Into Apps & Earn Big

Build apps for the AI wearable revolution, tap into a $100K+ bounty pool, and get noticed by top companies. Whether for fun or productivity, create unique use cases, integrate with real-time transcription, and join a thriving dev community.

Get Developer Kit Now

OMI AI PLATFORM
Remember Every Moment,
Talk to AI and Get Feedback

Omi Necklace

The #1 Open Source AI necklace: Experiment with how you capture and manage conversations.

Build and test with your own Omi Dev Kit 2.

Omi App

Fully Open-Source AI wearable app: build and use reminders, meeting summaries, task suggestions and more. All in one simple app.

Github →

Join the #1 open-source AI wearable community

Build faster and better with 3900+ community members on Omi Discord

Participate in hackathons to expand the Omi platform and win prizes

Participate in hackathons to expand the Omi platform and win prizes

Get cash bounties, free Omi devices and priority access by taking part in community activities

Join our Discord → 

OMI NECKLACE + OMI APP
First & only open-source AI wearable platform

a person looks into the phone with an app for AI Necklace, looking at notes Friend AI Wearable recorded a person looks into the phone with an app for AI Necklace, looking at notes Friend AI Wearable recorded
a person looks into the phone with an app for AI Necklace, looking at notes Friend AI Wearable recorded a person looks into the phone with an app for AI Necklace, looking at notes Friend AI Wearable recorded
online meeting with AI Wearable, showcasing how it works and helps online meeting with AI Wearable, showcasing how it works and helps
online meeting with AI Wearable, showcasing how it works and helps online meeting with AI Wearable, showcasing how it works and helps
App for Friend AI Necklace, showing notes and topics AI Necklace recorded App for Friend AI Necklace, showing notes and topics AI Necklace recorded
App for Friend AI Necklace, showing notes and topics AI Necklace recorded App for Friend AI Necklace, showing notes and topics AI Necklace recorded

OMI NECKLACE: DEV KIT
Order your Omi Dev Kit 2 now and create your use cases

Omi Dev Kit 2

Endless customization

OMI DEV KIT 2

$69.99

Make your life more fun with your AI wearable clone. It gives you thoughts, personalized feedback and becomes your second brain to discuss your thoughts and feelings. Available on iOS and Android.

Your Omi will seamlessly sync with your existing omi persona, giving you a full clone of yourself – with limitless potential for use cases:

  • Real-time conversation transcription and processing;
  • Develop your own use cases for fun and productivity;
  • Hundreds of community apps to make use of your Omi Persona and conversations.

Learn more

Omi Dev Kit 2: build at a new level

Key Specs

OMI DEV KIT

OMI DEV KIT 2

Microphone

Yes

Yes

Battery

4 days (250mAH)

2 days (250mAH)

On-board memory (works without phone)

No

Yes

Speaker

No

Yes

Programmable button

No

Yes

Estimated Delivery 

-

1 week

What people say

“Helping with MEMORY,

COMMUNICATION

with business/life partner,

capturing IDEAS, and solving for

a hearing CHALLENGE."

Nathan Sudds

“I wish I had this device

last summer

to RECORD

A CONVERSATION."

Chris Y.

“Fixed my ADHD and

helped me stay

organized."

David Nigh

OMI NECKLACE: DEV KIT
Take your brain to the next level

LATEST NEWS
Follow and be first in the know

Latest news
FOLLOW AND BE FIRST IN THE KNOW

thought to action

team@basedhardware.com

company

careers

invest

privacy

events

vision

products

omi

omi app

omi dev kit

omiGPT

personas

omi glass

resources

apps

bounties

affiliate

docs

github

help

feedback

enterprise