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Web Audio-based audio engine for Scratch 3.0
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Michael "Z" Goddard c12bf02b33
write ADPCM samples directly to the Audio Buffer's channel data 
The number of samples in the ADPCM can be known once the data chunk is
extracted and the block size is known. From there the audio buffer can
be created and its channel data passed to the decompress method. A lot
of time is saved by writing to the channel data directly instead of
writing to one array, copying that to another array, and then finally
copying to the channel data. A surprising amount of time is saved by
using one getChannelData call instead of calling to store each sample.
2018-10-22 17:12:05 -04:00
.github add docs for open sourcing 2016-10-13 15:07:18 -04:00
sound-files/drums add drum sound samples from scratch 2.0 2017-01-10 11:05:47 -05:00
src write ADPCM samples directly to the Audio Buffer's channel data 2018-10-22 17:12:05 -04:00
test rename DECAY_* constants to DECAY_WAIT and DECAY_DURATION 2018-06-25 14:01:15 -04:00
.editorconfig initial commit 2016-10-13 14:54:07 -04:00
.eslintignore initial commit 2016-10-13 14:54:07 -04:00
.eslintrc.js Install and configure eslint-config-scratch 2017-04-17 11:52:12 -04:00
.gitattributes Standardize repository settings 2017-04-11 11:33:12 -04:00
.gitignore Ignore source map output file 2017-04-14 14:00:39 -04:00
.npmignore publish to npm 2016-10-13 15:26:30 -04:00
.travis.yml Don't use npm prepublish 2018-06-14 13:57:36 -04:00
CONTRIBUTING.md add docs for open sourcing 2016-10-13 15:07:18 -04:00
LICENSE add docs for open sourcing 2016-10-13 15:07:18 -04:00
package.json wip: greenplayer tests 2018-06-21 16:01:35 -04:00
README.md docs(readme): add Greenkeeper badge 2017-04-17 10:51:20 -04:00
TRADEMARK.txt Update TRADEMARK 2018-06-18 13:12:40 -04:00
webpack.config.js Merge pull request #81 from mzgoddard/dependents-no-boiler 2018-05-31 17:46:55 -04:00

README.md

scratch-audio

Scratch audio engine is for playing sounds, instruments and audio effects in Scratch 3.0 projects

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Please note this project is at an early stage and we are not ready for pull requests

Build Status

Installation

This requires you to have Git and Node.js installed.

In your own node environment/application:

npm install https://github.com/LLK/scratch-audio.git

If you want to edit/play yourself:

git clone git@github.com:LLK/scratch-audio.git
cd scratch-audio
npm install

Testing

npm test

Donate

We provide Scratch free of charge, and want to keep it that way! Please consider making a donation to support our continued engineering, design, community, and resource development efforts. Donations of any size are appreciated. Thank you!