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Old 15th March 2010, 08:30 AM   #1501
phofman is offline phofman  Czech Republic
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SteveSun,

I have no experience with PS3, but I wonder if there is a working code for audio DSP on the cell coprocessors.
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Old 15th March 2010, 09:06 AM   #1502
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Perhaps it is easier to get started with Cuda on Nividia GPUs.

Koon ( koonlab.com) showed a FIR filter use-case and how it works under
Windows. He claims that it is much faster then going the "traditional" route.
Makes sense -- doesn't it?

Perhaps Koons stuff is portable quite easily to Linux.

The Cuda stuff is available to the Linux community.

E.g.

CUDA 2.3 Downloads
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Old 15th March 2010, 09:36 AM   #1503
phofman is offline phofman  Czech Republic
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Yes, the CUDA stuff looks very promising. Esp. on some ION2 HW.
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Old 15th March 2010, 01:35 PM   #1504
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Quote:
Originally Posted by phofman View Post
SteveSun,

I have no experience with PS3, but I wonder if there is a working code for audio DSP on the cell coprocessors.
I will look for them! But with one thing in mind though: the Slim does not support Linux anymore (basically, Sony killed Yellowdog Linux). I will upgrade my yellowdog linux on my PS-3s to the most recent version, and start looking for what we need. From my experience on PS-3, there have to be something out there (maybe not in Ubuntu, but very good chance to find in Yellowdog, and their source codes). All DSP programs are based on FFT, and at IBM Cell Supporting web site, FFT is a typical example they show people how to program Cell... If not, I am a mathematician, and I used to be a programmer on at least 10 different platforms... You know what I mean...
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Old 15th March 2010, 02:56 PM   #1505
phofman is offline phofman  Czech Republic
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Quote:
Originally Posted by SteveSun View Post
I will look for them! But with one thing in mind though: the Slim does not support Linux anymore (basically, Sony killed Yellowdog Linux). I will upgrade my yellowdog linux on my PS-3s to the most recent version, and start looking for what we need. From my experience on PS-3, there have to be something out there (maybe not in Ubuntu, but very good chance to find in Yellowdog, and their source codes). All DSP programs are based on FFT, and at IBM Cell Supporting web site, FFT is a typical example they show people how to program Cell... If not, I am a mathematician, and I used to be a programmer on at least 10 different platforms... You know what I mean...
The whole OSS audio world will praise and worship you if you make this work Thanks a lot.
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Old 15th March 2010, 03:04 PM   #1506
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Dear Steve,

Good to see you here! I think Koon make use of the videocard to do convolution. I think he uses windows but it will probably work on linux as well.

check here

Koon Lab
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Old 15th March 2010, 03:09 PM   #1507
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Dear Soundcheck,

Would you mind to send me a copy of the old wiki?

Thanks in advance
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Old 16th March 2010, 02:02 AM   #1508
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Quote:
Originally Posted by soundcheck View Post
Perhaps it is easier to get started with Cuda on Nividia GPUs.

Koon ( koonlab.com) showed a FIR filter use-case and how it works under
Windows. He claims that it is much faster then going the "traditional" route.
Makes sense -- doesn't it?

Perhaps Koons stuff is portable quite easily to Linux.

The Cuda stuff is available to the Linux community.

E.g.

CUDA 2.3 Downloads
Hi Soundcheck: I am wondering what is the list of the softwares that we need to implement on Linux. I am investigating the possibility of doing them on Yellowdog Linux on PS-3.

PS-3 uses a Nividia GPU and a Cell Processor with 8 user available (Sony disabled one) PPU and SPU units (parallel CPU), and if you do a google search: "PS3 Supercomputer" you are going to see lots of hits about using PS3 as a supercomputer...
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Old 16th March 2010, 12:05 PM   #1509
siqdiz is offline siqdiz  Netherlands
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Quote:
Originally Posted by maxlorenz View Post
Hi Siqdiz,



By directly connected do you mean galvanicaly connected? c'est dire with no isolation? Soundcheck and others have recommended isolation of USB signal to prevent excess noise from PC to pollute the DAC. I obeyed and use now a simple and cheap method based on microtransformers:

USB Isolator. Circuits@Home

It works wonderfully.

Excuses if all the above is already known.
Regards,
M.
That is very good information, I do hear harddisk access through my 98db/w speakers.
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Old 16th March 2010, 01:27 PM   #1510
phofman is offline phofman  Czech Republic
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Originally Posted by siqdiz View Post
That is very good information, I do hear harddisk access through my 98db/w speakers.
Did you try to power your DAC with an independent PSU first? The power in PC is VERY noisy.
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