初始化
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282
rg-09112127/js/speechSensation.js
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282
rg-09112127/js/speechSensation.js
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//
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let barrierFreeOpenSpeech;
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(function () {
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var APPID = "43341b7e";
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var API_SECRET = "MWQzMWEyYTAyYzVlZWRjOTM1NjE0MjI4";
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var API_KEY = "a46e1fc5d062a14b28cde0ff2c0046e1";
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let btnStatus = "UNDEFINED"; // "UNDEFINED" "CONNECTING" "OPEN" "CLOSING" "CLOSED"
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const btnControl = document.getElementById("speechStartButton");
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const recorder = new RecorderManager("./dist");
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recorder.onStart = () => {
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changeBtnStatus("OPEN");
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}
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let iatWS;
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let resultText = "";
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let resultTextTemp = "";
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let countdownInterval;
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/**
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* 获取websocket url
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* 该接口需要后端提供，这里为了方便前端处理
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*/
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function getWebSocketUrl() {
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// 请求地址根据语种不同变化
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var url = "wss://iat-api.xfyun.cn/v2/iat";
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var host = "iat-api.xfyun.cn";
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var apiKey = API_KEY;
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var apiSecret = API_SECRET;
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var date = new Date().toGMTString();
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var algorithm = "hmac-sha256";
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var headers = "host date request-line";
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var signatureOrigin = `host: ${host}\ndate: ${date}\nGET /v2/iat HTTP/1.1`;
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var signatureSha = CryptoJS.HmacSHA256(signatureOrigin, apiSecret);
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var signature = CryptoJS.enc.Base64.stringify(signatureSha);
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var authorizationOrigin = `api_key="${apiKey}", algorithm="${algorithm}", headers="${headers}", signature="${signature}"`;
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var authorization = btoa(authorizationOrigin);
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url = `${url}?authorization=${authorization}&date=${date}&host=${host}`;
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return url;
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}
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function toBase64(buffer) {
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var binary = "";
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var bytes = new Uint8Array(buffer);
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var len = bytes.byteLength;
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for (var i = 0; i < len; i++) {
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binary += String.fromCharCode(bytes[i]);
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}
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return window.btoa(binary);
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}
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function countdown() {
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let seconds = 60;
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btnControl.innerText = `录音中（${seconds}s）`;
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countdownInterval = setInterval(() => {
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seconds = seconds - 1;
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if (seconds <= 0) {
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clearInterval(countdownInterval);
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recorder.stop();
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} else {
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btnControl.innerText = `录音中（${seconds}s）`;
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}
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}, 1000);
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}
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function changeBtnStatus(status) {
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btnStatus = status;
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if (status === "CONNECTING") {
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btnControl.innerText = "建立连接中";
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document.getElementById("speechPartialResult").innerText = "";
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resultText = "";
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resultTextTemp = "";
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} else if (status === "OPEN") {
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countdown();
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} else if (status === "CLOSING") {
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btnControl.innerText = "关闭连接中";
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} else if (status === "CLOSED") {
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btnControl.innerText = "开始录音";
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}
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}
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function renderResult(resultData) {
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// 识别结束
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let jsonData = JSON.parse(resultData);
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if (jsonData.data && jsonData.data.result) {
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let data = jsonData.data.result;
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let str = "";
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let ws = data.ws;
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for (let i = 0; i < ws.length; i++) {
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str = str + ws[i].cw[0].w;
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}
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// 开启wpgs会有此字段(前提：在控制台开通动态修正功能)
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// 取值为 "apd"时表示该片结果是追加到前面的最终结果；取值为"rpl" 时表示替换前面的部分结果，替换范围为rg字段
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if (data.pgs) {
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if (data.pgs === "apd") {
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// 将resultTextTemp同步给resultText
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resultText = resultTextTemp;
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}
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// 将结果存储在resultTextTemp中
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resultTextTemp = resultText + str;
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} else {
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resultText = resultText + str;
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}
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document.getElementById("speechPartialResult").innerText =
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resultTextTemp || resultText || "";
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// 调用方法传输文字
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// console.log("sendSpeechText", resultTextTemp || resultText || "");
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checkVoiceCommand(resultTextTemp || resultText || "");
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// 网页间通信
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htmlPostMessage(
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{
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type: "语音识别",
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status: "process",
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data: resultTextTemp || resultText || "",
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}
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);
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}
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if (jsonData.code === 0 && jsonData.data.status === 2) {
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iatWS.close();
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}
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if (jsonData.code !== 0) {
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iatWS.close();
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console.error(jsonData);
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}
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}
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function connectWebSocket() {
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const websocketUrl = getWebSocketUrl();
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if ("WebSocket" in window) {
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iatWS = new WebSocket(websocketUrl);
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} else if ("MozWebSocket" in window) {
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iatWS = new MozWebSocket(websocketUrl);
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} else {
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alert("浏览器不支持WebSocket");
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return;
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}
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changeBtnStatus("CONNECTING");
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iatWS.onopen = (e) => {
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// 开始录音
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recorder.start({
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sampleRate: 16000,
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frameSize: 1280,
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});
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var params = {
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common: {
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app_id: APPID,
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},
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business: {
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language: "zh_cn",
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domain: "iat",
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accent: "mandarin",
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vad_eos: 5000,
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dwa: "wpgs",
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},
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data: {
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status: 0,
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format: "audio/L16;rate=16000",
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encoding: "raw",
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},
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};
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iatWS.send(JSON.stringify(params));
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// 网页间通信
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htmlPostMessage(
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{
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type: "语音识别",
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status: "start",
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data: "",
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}
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);
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};
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iatWS.onmessage = (e) => {
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renderResult(e.data);
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// console.log(e.data);
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};
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iatWS.onerror = (e) => {
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console.error(e);
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recorder.stop();
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changeBtnStatus("CLOSED");
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};
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iatWS.onclose = (e) => {
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recorder.stop();
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changeBtnStatus("CLOSED");
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// 网页间通信
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htmlPostMessage(
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{
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type: "语音识别",
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status: "end",
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data: "",
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}
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);
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};
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}
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recorder.onFrameRecorded = ({ isLastFrame, frameBuffer }) => {
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if (iatWS.readyState === iatWS.OPEN) {
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iatWS.send(
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JSON.stringify({
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data: {
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status: isLastFrame ? 2 : 1,
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format: "audio/L16;rate=16000",
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encoding: "raw",
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audio: toBase64(frameBuffer),
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},
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})
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);
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if (isLastFrame) {
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changeBtnStatus("CLOSING");
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}
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}
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};
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recorder.onStop = () => {
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clearInterval(countdownInterval);
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};
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btnControl.onclick = function () {
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if (btnStatus === "UNDEFINED" || btnStatus === "CLOSED" || btnStatus === "CONNECTING") {
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connectWebSocket();
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} else {
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// 结束录音
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recorder.stop();
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}
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};
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barrierFreeOpenSpeech = function () {
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// console.log("barrierFreeOpenSpeech", btnStatus);
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if (btnStatus === "UNDEFINED" || btnStatus === "CLOSED" || btnStatus === "OPEN") {
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connectWebSocket();
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} else {
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// 结束录音
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recorder.stop();
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}
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};
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})();
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function showSpeech() {
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let speechDom = document.getElementsByClassName("box-speech")[0];
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speechDom.style.display = speechDom.style.display == 'none' ? 'block' : 'none';
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voiceBroadcast(`${speechDom.style.display == 'block' ? '开启' : '关闭'}语音识别`);
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// 无障碍模式
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if (window.location.href.indexOf("courseHomeBarrierFree.html") !== -1) {
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barrierFreeOpenSpeech();
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}
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}
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// 检查语音命令
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function checkVoiceCommand(text) {
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if (!text) return false;
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// 语音命令配置
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const voiceCommands = [
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{ keywords: ['打开首页', '跳转首页', '回到首页'], action: () => { window.open('./indexHome.html', '_blank'); }, description: '打开首页' },
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{ keywords: ['打开百度', '跳转百度', '搜索'], action: () => { window.open('https://www.baidu.com', '_blank'); }, description: '打开百度' },
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];
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// 将文本转换为小写，去除标点符号和空格，以便更好地匹配
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const cleanText = text.toLowerCase().replace(/[.,，。？！、；：""''（）]/g, '').replace(/\s+/g, '');
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console.log("checkVoiceCommand", cleanText);
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// 检查是否匹配任何命令
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for (const command of voiceCommands) {
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for (const keyword of command.keywords) {
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// 同样处理关键词，去除空格
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const cleanKeyword = keyword.replace(/\s+/g, '');
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if (cleanText.includes(cleanKeyword)) {
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// 执行命令动作
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command.action();
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return true;
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}
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}
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}
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return false;
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}
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