Cobra VAD — Web Quick Start

Platforms

• Chrome & Chromium-based browsers
• Edge
• Firefox
• Safari

Requirements

• Picovoice Account and AccessKey
• Node.js 14+
• npm

Picovoice Account & AccessKey

Signup or Login to Picovoice Console to get your AccessKey. Make sure to keep your AccessKey secret.

Quick Start

Setup

1. Install Node.js .

2. Install the Web Voice Processor and Cobra Web packages:

npm install @picovoice/web-voice-processor @picovoice/cobra-web

Usage

Create an instance of CobraWorker:

import { CobraWorker } from "@picovoice/cobra-web";

function voiceProbabilityCallback(voiceProbability: number) {
    // take action based on voice probability
}

const cobra = await CobraWorker.create(
    "${ACCESS_KEY}",
    voiceProbabilityCallback
);

Initialize and start the Web Voice Processor to pass audio to the Cobra engine:

import { WebVoiceProcessor } from "@picovoice/web-voice-processor"

const webVoiceProcessor = await WebVoiceProcessor.instance();
webVoiceProcessor.subscribe(cobra)
await webVoiceProcessor.start();

Release resources explicitly when done with Cobra:

await cobra.release()

Demo

For the Cobra Web SDK, there is a Web demo project available on the Cobra GitHub repository .

Setup

Clone the Cobra repository from GitHub:

git clone --recurse-submodules https://github.com/Picovoice/cobra.git

Usage

1. Install dependencies and run:

cd cobra/demo/web
npm install
npm run start

2. Open http://localhost:5000 to view it in the browser.

Resources