我希望我的audio2 文件在audio1.currentTime 为3 秒时播放,但我无法使其工作。我是 javascript 的新手,我错过了什么?这是我当前的 JavaScript 代码:
function initAudioPlayer(){
var audio1, audio2, ext, agent;
ext = ".mp3";
agent = navigator.userAgent.toLocaleLowerCase();
if(agent.indexOf('firefox') != -1 || agent.indexOf('opera') != -1) { ext = ".ogg";}
//Audio Objects: audio1 and audio2
audio1 = new Audio();
audio1.src = "folder/Audio1"+ext;
audio1.loop = false;
audio1.play();
audio2 = new Audio();
audio2.src = "folder/Audio2"+ext;
audio2.loop = false;
audio2.play();
//Function that reproduces the second audio file at second 3 of the first audio file
function audio2(){
if(audio1.currentTime == 3) {audio2.play();}
};
}
window.addEventListener("load", initAudioPlayer);
最佳答案
您必须使用音频 Api 并获取文件的缓冲区。 然后您必须加上每个字节并复制到另一个新缓冲区。 这段代码可以帮助你:
let idnex=0;
samples.forEach(buufer => {
if (index === 0) {
tempBuf = buufer;
} else {
tempBuf = this.appendBuffer(tempBuf, buufer);
}
index++;
});
通过这种方法,您可以附加两个缓冲区:
private appendBuffer(buffer1, buffer2) {
const numberOfChannels = Math.min(buffer1.numberOfChannels, buffer2.numberOfChannels);
const tmp = this.audioContextService.createBuffer(Math.max(buffer1.numberOfChannels, buffer2.numberOfChannels),
Math.max(buffer1.length, buffer2.length), buffer1.sampleRate);
for (let i = 0; i < numberOfChannels; i++) {
const channel = tmp.getChannelData(i);
let finallArray = [];
let d = [];
const chanelTemp = buffer1.getChannelData(i);
if (buffer2.numberOfChannels <= i) {
finallArray = chanelTemp;
} else {
const c = buffer2.getChannelData(i);
if (chanelTemp.length > c.length) {
finallArray = chanelTemp;
d = c;
} else {
finallArray = c;
d = chanelTemp;
}
for (let j = 0; j < d.length; j++) {
finallArray[j] += d[j] / 2;
}
}
channel.set(finallArray, i);
}
你可以看我的演示here
<小时/>您还可以看到this Answer
关于javascript - 为什么我的第二个音频文件无法使用 currentTime 属性播放?,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/52639176/