Encode/Decode Audio To/From PNG Alpha Channel

An article by mgear    2 Comments

Small test on embedding Audio data into PNG alpha channel.
With added option to shuffle pixels to hide/”encrypt” original image and sound.

To make sound file small enough, use this option to set low hz.

Ideas for later:
– Compress audio (tested RLE but didn’t do much with audio)
– Use full texture size automatically (currently just fills as long as have data)
– Resample audio in script, instead setting sample rate in audio importer
– Option to encode seed and/or hz value into texture

Sources: (take both scripts)
https://gist.github.com/unitycoder/6fece768157c038fb4c28d4b59931625

Example results