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farmerbb / RED-Project

ROM Extraction Documentation Project
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Castlevania Advance Collection #26

Open Arthandas opened 3 years ago

Arthandas commented 3 years ago

The roms can be unpacked the same way as in Anniversary Collection though they come in .bin format instead of .gba. I tried different emulators and none of the roms have any sound. I have no idea what's the issue.

MAlexandros commented 3 years ago

I tried it and got the same thing here. The GBA roms come in .bin Changing the format allows them to be loaded into mGBA in Retroarch but none of them have any sound. They appear to be the same size as the No-Intro set so everything should be there. At least the SNES ones do work fine on emulators, sound and everything. Would love to find a way to enjoy the GBA on an emulator or original hardware through flashcart, since they are so expensive...

Arthandas commented 3 years ago

Judging from some posts on Steam, I think they "enhanced" the audio and it's probably stored in separate files...

Coolie2 commented 3 years ago

The only way of fixing it without using files not included in the Steam release, and thus keep it as legal as possible, would be to somehow convert the improved audio back to something the GBA can output and patch it back into the ROMs, but I don't see how it could be done to match the sound of the normal ROMs exactly without including the original GBA sound files in such a patcher, which would be legally problematic.

farmerbb commented 3 years ago

I went ahead and added Castlevania Advance Collection to the wiki, despite the sound issues with the GBA titles. If anyone is able to get sound working on these games, feel free to update the page.

MAlexandros commented 3 years ago

I've just realised there is an option when you're running the GBA games to turn the "High quality audio" on and off. Does this mean that the original audio is still in the rom but it's being disabled/enabled by the emulator used in the collection? When you turn it off it first needs to reset the game (which may support the theory that the audio is still in the rom) and it ceartinly loses quality but I never played the originals so I cannot tell if it's exactly the same audio.

Arthandas commented 3 years ago

Someone made patches restoring audio in all GBA titles: https://www.romhacking.net/forum/index.php?topic=33506.0

I tested it and it works fine.

farmerbb commented 3 years ago

Thanks! I added this to the wiki page for Castlevania Advance Collection.