CODEWITHSUNDEEP
node.jswav
bubakazouba
bubakazouba

Reputation: 1683

how to use the .Write function for wav module in nodejs

It's probably something simple and stupid, but the module doesn't have enough documentation in neither the github page or the npm page.

Can someone write a code example of using the .Write function for writing a wav file

Upvotes: 5

Views: 4188

Answers (1)

robertklep
robertklep

Reputation: 203304

Here's a very simple example using tonegenerator to generate raw PCM data:

var tone   = require('tonegenerator');
var wav    = require('wav');
var writer = new wav.FileWriter('output.wav');

writer.write(new Buffer(tone(220, 5))); // 220Hz for 5 seconds
writer.end();

wav.FileWriter() is a simple wrapper around wav.Writer() to write to a file directly, similar to this:

var writer = new wav.Writer();

writer.pipe(require('fs').createWriteStream('output.wav'));

writer.write(new Buffer(tone(220, 5)));
writer.end();

Long story short: wav.Writer() creates a writable stream that you can .write() raw PCM data to. Most WAVE properties are hardcoded.

Upvotes: 7

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