Emoump audio assets

The following files are from Kenney audio packs and are released under
Creative Commons Zero (CC0):

- jump.wav (converted from Digital Audio, Kenney)
- collision.ogg (original Impact Sounds asset, Kenney; no longer used for collision.wav)
- button.wav (converted from UI SFX Set, Kenney)

jump.wav and button.wav are local PCM conversions of the original OGG
assets; the original files are retained in this directory for provenance.

pass.wav and collision.wav are original procedural sound effects generated
with FFmpeg (sine sweeps and filtered noise), not extracted from the reference
video or converted from the retained collision.ogg. Both are mono 22050 Hz
16-bit PCM WAV files.

CC0 permits use in personal and commercial projects. Attribution is not
required, but crediting Kenney or www.kenney.nl is appreciated.

Source: https://www.kenney.nl/
License: https://creativecommons.org/publicdomain/zero/1.0/

The following additional effects are original procedural sounds generated locally
with FFmpeg for this project:

- pickup.wav
- shield.wav
- dash.wav
- clear.wav
- achievement.wav
- pass-new.wav
- fail.wav

They contain no third-party samples and may be used with this project without
an additional third-party audio license.
