Leopard Speech-to-Text
Node.js Quick Start

Platforms

• Linux (x86_64)
• macOS (x86_64, arm64)
• Windows (x86_64)
• NVIDIA Jetson Nano
• Raspberry Pi (3, 4)

Requirements

• Picovoice Account & AccessKey
• Node.js 10+
• 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-node npm package:

npm install @picovoice/leopard-node

Usage

Create an instance of the engine:

const Leopard = require("@picovoice/leopard-node");

const accessKey = "${ACCESS_KEY}";
const leopard = new Leopard(accessKey);

Transcribe an audio file by providing an absolute path to the file:

const { transcript, words } = leopard.processFile("${AUDIO_FILE_PATH}");

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

const getAudioData = () => {
  // ...
}

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

Free resources used by Leopard:

leopard.delete()

Demo

For the Leopard Node.js SDK, we offer demo applications that demonstrate how to use the Speech-to-Text engine on audio files.

Setup

Install the Leopard demo package:

npm install -g @picovoice/leopard-node-demo

This package installs command-line utilities for the Leopard Nodejs demos.

Usage

Use the --help flag to see the usage options for the demo:

leopard-file-demo --help

Run the following command to transcribe an audio file:

leopard-file-demo --access_key ${ACCESS_KEY}
                  --input_audio_file_path ${AUDIO_PATH}

For more information on our Leopard demos for Nodejs, head over to our GitHub repository.

Resources