Microsoft Edge Text-to-Speech Client

A TypeScript-based client for interacting with Microsoft Edge's Text-to-Speech (TTS) API. This package is compatible with both Node.js and browser environments, making it versatile for various use cases.

https://www.npmjs.com/package/edge-tts-client

Features

• 🎙️ Text-to-Speech: Synthesize speech from text using Microsoft's Edge TTS API.
• 🌐 Cross-Platform: Works in both Node.js and the browser.
• 📦 TypeScript Support: Includes complete TypeScript definitions.
• 🔊 Audio Streaming: Supports real-time streaming of audio chunks.

Installation

To install the package, run:

npm install edge-tts-client

Usage

Basic Example

import { EdgeTTSClient, ProsodyOptions, OUTPUT_FORMAT } from 'edge-tts-client';

// Initialize the client
const ttsClient = new EdgeTTSClient();

// Set metadata for synthesis
await ttsClient.setMetadata('en-US-GuyNeural', OUTPUT_FORMAT.AUDIO_24KHZ_48KBITRATE_MONO_MP3);

// Define SSML options
const options = new ProsodyOptions();
options.pitch = 'medium';
options.rate = 1.2;
options.volume = 90;

// Synthesize text to a stream
const stream = ttsClient.toStream('Hello, world!', options);

// Handle the audio stream
stream.on('data', (audioChunk) => {
    console.log('Received audio chunk:', audioChunk);
});

stream.on('end', () => {
    console.log('Synthesis complete.');
});

API

EdgeTTSClient

The main class for interacting with Edge TTS.

Methods

• setMetadata(voiceName: string, outputFormat: OUTPUT_FORMAT, voiceLocale?: string): Promise<void>

  • Sets the voice, format, and locale for TTS synthesis.

• toStream(input: string, options?: ProsodyOptions): EventEmitter

  • Converts text to a stream of audio chunks.

• close(): void

  • Closes the WebSocket connection.

ProsodyOptions

Defines the prosody options for SSML synthesis:

• pitch: Pitch of the voice (e.g., 'medium', 'high').
• rate: Speed of the speech (e.g., 1.0, 1.2).
• volume: Volume of the audio (e.g., 90, 'loud').

OUTPUT_FORMAT

An enum defining the available output formats, such as:

• AUDIO_24KHZ_48KBITRATE_MONO_MP3
• WEBM_24KHZ_16BIT_MONO_OPUS

Development

Build

To build the project, run:

npm run build

Test

To run tests with Vitest:

npm run test

Contributing

Contributions are welcome! Please open an issue or submit a pull request for any changes or improvements.