Web Speech API：语音识别与语音合成实践

概述Web Speech 包含语音识别与语音合成。合成通过 `SpeechSynthesisUtterance` 输出语音，识别在部分浏览器以 `webkitSpeechRecognition` 提供能力。用法/示例const utter = new SpeechSynthesisUtterance('你好，世界')

utter.lang = 'zh-CN'

speechSynthesis.speak(utter)

const Rec = window.SpeechRecognition || window.webkitSpeechRecognition

if (Rec) {

const rec = new Rec()

rec.lang = 'zh-CN'

rec.continuous = false

rec.interimResults = true

rec.onresult = e => {

const t = Array.from(e.results).map(r => r[0].transcript).join(' ')

}

rec.start()

}

工程建议明确告知识别的用途与数据处理，遵守隐私与平台政策。对不支持识别的环境提供文本输入回退，并在合成上提供字幕与文字替代。控制合成与识别的语言与速率，保持清晰与稳定。参考与验证MDN：Web Speech API — https://developer.mozilla.org/docs/Web/API/Web_Speech_APIMDN：SpeechSynthesis — https://developer.mozilla.org/docs/Web/API/SpeechSynthesis