16 Jun
2004
16 Jun
'04
12:32 p.m.
On Wed, Jun 16, 2004 at 07:03:03 +0300, michael tewner wrote:
OK.
I have permission to get one of these programs moving with some
constraints (appended). WHich do you guys think would be most useful
(publishable :-) )?
1. The OpenGL Spectrogram implemented into Steve Harris's meterbridge
2. A 31-BAND (or more?) graphic EQ
2 seems a bit redundant, as we allready have several, though obviously I'm
biased in favour of 1 :)
1- This should be run on any platform including PC
platform.
<Yeah, right. Perhaps I"ll just implement the code, and wrap it with JACK
and WIN-API with preprocessor commands....Grrr...>
That will be hard. Though you could just make the DSP+UI code generic and
include it into a seperate windows app.
the GUI parts of meterbridge are SDL (trivially portable to windows) and
OpenGL (natch) - picked at runtime.
3- The FFT algorithm should be run in parallel and
optimize at least for
two platforms.
<I guess once we're splitting up the spectrum, this shouldn't be a
problem...BTW,the advisor teaches an MPI course. This idea probably came
from this...I'm not sure what he means by "2 platforms.">
Ergh! I think you'd want to make it build against FFTW3 to preserve the
sanity/CPUs of all involved, but obviously this is a project and having a
fallback FFT routine certainly wouldn't hurt.
I'd start with FFTW anyway, debugging FFT routines its not a whole lot of
fun.
4- We can use a Wavelet Transformation inside of FFT
and to parallize it.
<*shrug* I'm gonna hafta do some research. wikipedia says it's like a FFT
running in O(N) instead of O(N log N):
http://en.wikipedia.org/wiki/Wavelet_transform
This project is starting to look big and clunky:
1. Implementing both windows and linux
2. Parrellizing the code? I don't mind writing multithreaded or MPI... it
just looks like overkill....
He may not mean multithreaded, could mean parallel FFT and wavelet in the
mathematical sense.
3. Can JACK compile on IRIX? That's his OS of
choice (Being his only *nix
experience...) and, well, SGI's are fun! Perhaps I can convince him to put
linux on his old O2.
Given how hard it was to port to OSX I doubt its easy.
...I'de just hate to kill Steve's code,
though.
Heh, my code fights back, and theres always CVS ;)
- Steve