Demo of audio_effect_create() added in 2022.11 version of GameMaker. Feel free to use, learn and modify, no credits needed.
You can also check demo on: https://gnysek.itch.io/gm-audio-effects-demo .
Audio sample took from https://dova-s.jp/EN/bgm/play16631.html
"Ride On" composed by gooset
License: https://dova-s.jp/EN/_contents/license/
Creator profile: https://dova-s.jp/EN/_contents/author/profile418.html