Javascript 从音频缓冲区在Node.js中写入wav文件
我是Node.js编程新手,正在尝试将m4a文件转换为wav文件 我使用audiobuffer实现wav和web音频api。 这是我的代码:Javascript 从音频缓冲区在Node.js中写入wav文件,javascript,node.js,audiocontext,Javascript,Node.js,Audiocontext,我是Node.js编程新手,正在尝试将m4a文件转换为wav文件 我使用audiobuffer实现wav和web音频api。 这是我的代码: const fs = require('fs'); const toWav = require('audiobuffer-to-wav'); const AudioContext = require('web-audio-api').AudioContext; const audioContext = new AudioContext; let resp
const fs = require('fs');
const toWav = require('audiobuffer-to-wav');
const AudioContext = require('web-audio-api').AudioContext;
const audioContext = new AudioContext;
let resp = fs.readFileSync('sample.m4a');
audioContext.decodeAudioData(resp, buffer => {
let wav = toWav(buffer);
console.log(buffer.length);
console.log(wav);
});
我想知道如何将wav变量保存到Node.js中的文件中
const fs = require('fs');
const toWav = require('audiobuffer-to-wav');
const AudioContext = require('web-audio-api').AudioContext;
const audioContext = new AudioContext;
let resp = fs.readFileSync('sample.m4a');
var audioStack = [];
var header = require('waveheader');
audioContext.decodeAudioData(resp, buffer => {
let wav = toWav(buffer);
var chunk = new Uint8Array(wav);
console.log(chunk);
fs.appendFile('bb.wav', new Buffer(chunk), function (err) {
});
});
这是我的答案。感谢Kalamarico。您需要“waveheader”,但您似乎没有使用它向流写入头。我认为您可能希望跟踪流端,然后将数据子块的大小也添加到头中。