https://github.com/audiojs/audio-generator
Generate audio with a function
https://github.com/audiojs/audio-generator
Last synced: 8 months ago
JSON representation
Generate audio with a function
- Host: GitHub
- URL: https://github.com/audiojs/audio-generator
- Owner: audiojs
- License: mit
- Created: 2015-10-04T01:54:36.000Z (over 10 years ago)
- Default Branch: master
- Last Pushed: 2018-04-11T00:40:17.000Z (about 8 years ago)
- Last Synced: 2025-09-21T11:20:28.679Z (8 months ago)
- Language: JavaScript
- Homepage:
- Size: 40 KB
- Stars: 31
- Watchers: 15
- Forks: 2
- Open Issues: 8
-
Metadata Files:
- Readme: readme.md
- License: license.md
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README
# audio-generator [](https://travis-ci.org/audiojs/audio-generator) [](http://github.com/badges/stability-badges)
Generate audio stream with a function.
## Usage
[](https://npmjs.org/package/audio-generator/)
#### Direct
```js
const generator = require('audio-generator');
const speaker = require('audio-speaker');
// panned sine generator
let generate = generator(time => [
Math.sin(Math.PI * 2 * time * 439), //channel 1
Math.sin(Math.PI * 2 * time * 441), //channel 2
], { duration: 2 });
let write = speaker();
// hook up generator → speaker loop
(function loop () {
write(generate(), loop);
})();
```
#### Pull stream
```js
var generator = require('audio-generator/pull');
var speaker = require('audio-speaker/pull');
var pull = require('pull-stream/pull');
pull(
generator(Math.random, { duration: 2 }),
speaker()
);
```
#### Node stream
```js
var Generator = require('audio-generator/stream');
var Speaker = require('audio-speaker/stream');
Generator(
//Generator function, returns sample values -1..1 for channels
function (time) {
return [
Math.sin(Math.PI * 2 * time * 439), //channel 1
Math.sin(Math.PI * 2 * time * 441), //channel 2
]
},
{
//Duration of generated stream, in seconds, after which stream will end.
duration: Infinity,
//Periodicity of the time.
period: Infinity
})
.on('error', function (e) {
//error happened during generation the frame
})
.pipe(Speaker());
```
## Related
> [audio-through](http://npmjs.org/package/audio-through) — universal audio processing stream.
> [audio-speaker](http://npmjs.org/package/audio-speaker) — output audio stream to speaker, both in node/browser.
> [baudio](http://npmjs.org/package/baudio), [webaudio](http://npmjs.org/package/webaudio) — alternative audio generators.