tardis-bot/tts/espeak/index.js

const BaseEngine = require('../BaseEngine')
const { spawn } = require('child_process')

module.exports = class extends BaseEngine {
	constructor() {
		super('espeak','ESpeak', 'wav')
	}
	getDefaultVoice() {
		return 'en';
	}
	async getSpeechFile(text, filepath, voice = this.getDefaultVoice(), params = {}) {
		let proc = await spawn('espeak', ['-v', voice, '-w', filepath, '--stdin']);
		proc.stdin.end(text);
	}
}