Leopard Speech-to-Text
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 Leopard Web package:

npm install @picovoice/leopard-web

Usage

Generate a custom Leopard model from Picovoice Console or download the default model.

Put the model file in the project's public directory or generate a base64 model using the build in script:

npx pvbase64 -i ${LEOPARD_PARAMS_PATH} -o ${OUTPUT_FILE_PATH}

Create a LeopardWorker instance using a base64 model or a model hosted in a public directory:

import { LeopardWorker } from "@picovoice/leopard-web"
import leopardParams from "${LEOPARD_PARAMS_BASE64_PATH}";

const leopard = await LeopardWorker.create(
  "${ACCESS_KEY}",
  {
    base64: leopardParams,
    // or
    publicPath: "${MODEL_RELATIVE_PATH}"
  }
);

Transcribe audio (sample rate of 16 kHz, 16-bit linearly encoded and 1 channel):

function getAudioData(): Int16Array {
  // get audio
  return new Int16Array();
}

const { transcript, words } = await leopard.process(getAudioData());

Release resources explicitly when done with Leopard:

await leopard.release()

Demo

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

Setup

Clone the Leopard repository from GitHub:

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

Usage

1. Install dependencies and run:

cd leopard/demo/web
npm install
npm run start

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

Resources