var context = new AudioContext(),通过decodeAudioData获得声道数据并倒序一下即可
request = new XMLHttpRequest();
request.open('GET', 'path/to/audio.mp3', true);
request.responseType = 'arraybuffer';
request.addEventListener('load', function(){
context.decodeAudioData(request.response, function(buffer){
var source = context.createBufferSource();
Array.prototype.reverse.call( buffer.getChannelData(0) );
Array.prototype.reverse.call( buffer.getChannelData(1) );
source.buffer = buffer;
});
});
完整可在线运行示例代码:
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width,initial-scale=1.0,maximum=1.0,minimum=1.0,user-scalable=0" />
</head>
<body>
<div>
<aBfwOnclick="play()">原版播放</a>
<aBfwOnclick="playreverse()">倒序播放</a>
</div>
<script type="text/javascript">
function playreverse(){
var context = new AudioContext(),
request = new XMLHttpRequest();
request.open('GET', '/asset/testsound.mp3', true);
request.responseType = 'arraybuffer';
request.addEventListener('load', function(){
context.decodeAudioData(request.response, function(buffer){
var source = context.createBufferSource();
Array.prototype.reverse.call( buffer.getChannelData(0) );
Array.prototype.reverse.call( buffer.getChannelData(1) );
source.buffer = buffer;
console.log(buffer);
source.connect(context.destination);
source.start(0); //立即播放
});
});
request.send();
}
function play(){
var context = new AudioContext(),
request = new XMLHttpRequest();
request.open('GET', '/asset/testsound.mp3', true);
request.responseType = 'arraybuffer';
request.addEventListener('load', function(){
context.decodeAudioData(request.response, function(buffer){
var source = context.createBufferSource();
source.buffer = buffer;
console.log(buffer);
source.connect(context.destination);
source.start(0); //立即播放
});
});
request.send();
}
</script>
</body>
</html>
网友回复
如何编写一个chrome插件实现多线程高速下载大文件?
cdn版本的vue在网页中出现typeerror错误无法找到错误代码位置怎么办?
pywebview能否使用webrtc远程控制共享桌面和摄像头?
pywebview6.0如何让窗体接受拖拽文件获取真实的文件路径?
如何在linux系统中同时能安装运行apk的安卓应用?
python有没有离线验证码识别ocr库?
各家的ai图生视频及文生视频的api价格谁最便宜?
openai、gemini、qwen3-vl、Doubao-Seed-1.6在ui截图视觉定位这款哪家更强更准?
如何在linux上创建一个沙箱隔离的目录让python使用?
pywebview如何使用浏览器自带语音识别与webspeech 的api?