nodejs 如何将文字转语音

以下是使用Node.js将文字转换为语音的两种方法：

1. 使用IBM Watson语音合成服务

const TextToSpeechV1 = require('ibm-watson/text-to-speech/v1');
const { IamAuthenticator } = require('ibm-watson/auth');

const textToSpeech = new TextToSpeechV1({
  authenticator: new IamAuthenticator({
    apikey: '<apikey>',
  }),
  serviceUrl: '<url>',
});

const params = {
  text: 'Hello world',
  voice: 'en-US_AllisonV3Voice',
  accept: 'audio/wav',
};

textToSpeech.synthesize(params)
  .then(response => {
    const audio = response.result;
    return textToSpeech.repairWavHeaderStream(audio);
  })
  .then(repairedFile => {
    // 处理音频文件
  })
  .catch(err => {
    console.log(err);
  });

2. 使用Node.js内置的child_process模块调用PowerShell命令行工具

const { exec } = require('child_process');
const iconv = require('iconv-lite');

exec(`powershell.exe Add-Type -AssemblyName System.speech; $speak = New-Object System.Speech.Synthesis.SpeechSynthesizer; $speak.Rate = 3; $speak.Speak([Console]::In.ReadLine()); exit`)
  .stdin.end(iconv.encode('Hello world', 'gbk'));