Sony PlayStation & PlayStation 2 BIOS Sounds With Respective Pitches
936You might be wondering how I managed to get all of those weird non-standard numbers used for various sampling rates and pitches.
It turns out those values come from iteratively multiplying or dividing standard sampling rate values (e.g.: 11025, 22050, 32000, 44100, 48000, etc...) with the 12th root of two and the 24th root of two. This way you get all possible semitones and also semisemitones.
Both the PlayStation and the PlayStation 2 are natively capable of treating recorded audio samples as instruments, each reproduced with 12 notes between each octave or even 24 notes between each octave.
This project took me forever.
I had to first extract the Sony 4-bit ADPCM streams from the BIOS dumps using hex editors and some online documentation, figure out how the PlayStation 1 & 2 manage pitches and then convert the various streams with the respective pitches I could find in the code of each BIOS.
Not all possible combinations are included in this video since there are too many of them, but there's still a reasonable amount.
Also, there is no echo simulation.
Great respect goes to Takafumi Fujisawa, the man behind the sounds of the PS1 and the PS2! ;)
There's no download available yet.
In the future I will try to provide a link that does not expire.
UPDATE!
DOWNLOAD LINK HERE:
https://mega.nz/file/sBgR2QAA#Q5eOcly4dkpPYvShDOSPYQusBHqiZCqeWuIW-exyeZk