初始化

frontend/packages/js/utils/voiceBroadcast.js

@@ -0,0 +1,35 @@
+/**
+ * @description 文字转语音方法
+ * @public
+ * @param { text, rate, lang, volume, pitch } object
+ * @param  text 要合成的文字内容，字符串
+ * @param  rate 读取文字的语速 0.1~10  正常1
+ * @param  lang 读取文字时的语言
+ * @param  volume  读取时声音的音量 0~1  正常1
+ * @param  pitch  读取时声音的音高 0~2  正常1
+ * @returns SpeechSynthesisUtterance
+ */
+export default function speak ({ text, speechRate, lang, volume, pitch }, endEvent, startEvent) {
+  if (!window.SpeechSynthesisUtterance) {
+    console.warn('当前浏览器不支持文字转语音服务')
+    return
+  }
+
+  if (!text) {
+    return
+  }
+
+  const speechUtterance = new SpeechSynthesisUtterance()
+  speechUtterance.text = text
+  speechUtterance.rate = speechRate || 1
+  speechUtterance.lang = lang || 'zh-CN'
+  speechUtterance.volume = volume || 1
+  speechUtterance.pitch = pitch || 1
+  speechUtterance.onend = function () {
+    endEvent && endEvent()
+  }
+  speechUtterance.onstart = function () {
+    startEvent && startEvent()
+  }
+  speechSynthesis.speak(speechUtterance)
+}