I've extracted the PS1 BIOS Sounds (SCPH-1001) and added reverb to them using: https://voicechanger.io/voicemaker#/ The Scratch audio system is very similar to the PS1, each features are: ADPCM Sampling frequency: 44,1 kHz I don't even know if Scratch has ADPCM or 44,1 kHz sampling frequency, but it is very similar I've been recreated the startup itself too using those 3 BIOS Sounds, and 4 channels of audio, each one to a BIOS audios, but the harmony uses 2 channels of audio. Chimes are a bit strange but i am training to improve them All BIOS sounds are organized and played in order as: SCPH1001_00000 SCPH1001_00001 SCPH1001_00002 If i make it, i will mess up a lot with the engine so i must make a draft first