PlayStation Startup Sound [PSX VAB/SEQ to SF2/MID conversion (attempt)]

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I made a tool to extract the PlayStation startup sound from a memory dump. It maybe possible to get it from the BIOS ROM directly, but since the sequences and VAB header are compressed, I just did it the cheap way with a memory dump.

Link: https://github.com/MarkusMaal/psxbios2mid/

As you may be able to hear, the conversion is not 100% accurate. The soundfont is just a regular .VAB (used by a LOT of PSX games), which is easy enough to convert, but the sequences themselves are actually using a custom MIDI-like format proprietary to the PSX BIOS ROM, which I've reverse engineered the binary structure of myself (you can also get the ImHex patterns from the repository above). However, actually creating MIDI files from scratch is kind of difficult and this is the best I've managed so far.

The startup sound consists of three parts: boot, transition and ending. There is no specific sequence for the transition part, so I assume the BIOS is hard-coded to play that sound at a specific pitch and velocity.

Chapters:
0:00 Part 1 (no disc/boot)
0:27 Part 2 (reverse glass break)
0:34 Part 3 (license screen)
0:49 Bonus stuff

MIDI player: Spessasynth

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Avaldati: 28.10.25
Failinimi: psxbios2mid.mov
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