Rockboy audio

[r3dlink13]

When I play a gameboy rom, the sound is way too highand squeeky. This occurs on all of my roms so i currently have the sound turned off. Can anyone explain this? Is it being worked on if it is a fault in Rockboy? If this has lready been discussed, please redirect me. Thanks!

[axlgreasetires]

Well...

The reason the noise sucks is because an ipod cannot run at the same speed that a gameboy can.  That's the simplest way to put it.

[Llorean]

And that was also no explanation at all. The iPod is many times the speed of a gameboy, and your explanation made no attempt to help the user, and shows very little evidence of understanding the cause of the problem.

While I haven't played gameboy games on the iPod (having an iRiver that works fine with them) I don't know for certain, but it could be the same resampling issue that Doom and other things suffer from, I'm just not really sure.

[r3dlink13]

Do you know if anyone is currently or will be working on it? I realize it's not a top priority, but still...

[Llorean]

Well, firstly, I've never explicitly heard someone mention gameboy audio problems before. I note in your signature that you're running an unsupported build, so I would say

A) Check for an existing bug report for an identical rockboy audio problem.

B) Make sure you have a clean install of the official build, and then verify for certain that the problem happens on a ROM where the sound works properly on a computer.

And no, I don't think anyone's working explicitly on rockboy at all.

[jacobts]

yeah, i have noticed that too. it is all ipod builds its just nobody really cares about saying anything really because as you said it is not top priority and doesnt really matter.( to me gameboy audio sucks anyway as long as i can play tetris and galaga etc. i am happy)

[r3dlink13]

ok, thanks for all your help. I guess I'll just have to keep my eyes open for updates.

Also, thanks for pointing out my signature, i have been running the standard daily build for some time now, since Senab quit updating. I'll have to change that.

[linuxstb]

Well...

The reason the noise sucks is because an ipod cannot run at the same speed that a gameboy can.  That's the simplest way to put it.

That's not the reason at all.

The problem is that Rockboy generates sound at 11.025KHz, but the ipod audio driver in Rockbox is (at the moment) fixed at 44.1KHz.  The audio driver needs fixing, not Rockboy.

[kkurbjun]

Well...

The reason the noise sucks is because an ipod cannot run at the same speed that a gameboy can.  That's the simplest way to put it.

That's not the reason at all.

The problem is that Rockboy generates sound at 11.025KHz, but the ipod audio driver in Rockbox is (at the moment) fixed at 44.1KHz.  The audio driver needs fixing, not Rockboy.

Do all ipod's codec chips support 11.025kHz?  I thought that some do not go that low.

[jacobts]

well, it does

[Peachey]

Yeh I get this as well on my 30GB 5G iPod.

iBoy runs most roms fine with decent sound, you might want to look into that.

The sounds in Doom work fine, though they are a little distorted some times.

[r3dlink13]

The problem with iBoy is that it is only for ipod linux, which I would have no problem taking for a spin if it weren't for the fact that I'd have to delete 30 Gigs of data from my ipod to install it. (I have no room to back it all up on my computer during the installation either.) So for now, I think I'll just have to wait.

[lachlan]

Theres something I've wanted to ask about Rockboy for a while now but haven't figured worthy of its own thread:
I read on the Ipodlinux forums that iBoy is able to emulate the Gameboy at 200% speed. If this is the case, why is RB so far behind? I realise it isn't optimised yet, and hasn't had sufficient work done, but surely that doesn't explain the enormous difference. Or was the person stating that Iboy can run at 200% simply mistaken?
I looked on the rockBoy wiki page and there was no mention of this, so sorry if the topic has been discussed before.

[Llorean]

Well, I find the 200% speed claim doubtful, but I can't disprove it, or outright deny it.

But the main reason Rockboy isn't as fast as it could be: It's not optimized.

Seriously, the core developers are working on Rockbox itself, trying to get the main features working properly on the iPods. None of them are particularly interested in putting aside the main purpose of Rockbox to go and optimize a game that isn't really the point, and most of the people who want to see Rockboy improved don't want it badly enough to either do what is necessary, or learn what is necessary to do what is necessary.

[xonium]

If I knew anything about this kind of programming I would do it, but I don't