Dear List,
I managed to get the phase vocoder working on my Raspberry Pi, with the standard Raspbian wheezy distro. It works ok under the following conditions :
- no GUI activity (even moving the mouse results in awful scratches)
- the "delay" in Pd is set to at least 50ms
- 224 Mb of RAM is allocated to the CPU.
All this using the internal audio output.
This is quite encouraging...
Cheers,
Pierre.
One slight tweak: if you type "sudo chmod 4755 /usr/bin/pd" you will probably be able to use the mouse clicklessly (at some expense to security!)
This will be unnecessary in release 0.44...
cheers Miller On Tue, Sep 11, 2012 at 07:32:16PM +0200, Pierre Massat wrote:
Dear List,
I managed to get the phase vocoder working on my Raspberry Pi, with the standard Raspbian wheezy distro. It works ok under the following conditions :
- no GUI activity (even moving the mouse results in awful scratches)
- the "delay" in Pd is set to at least 50ms
- 224 Mb of RAM is allocated to the CPU.
All this using the internal audio output.
This is quite encouraging...
Cheers,
Pierre.
Pd-list@iem.at mailing list UNSUBSCRIBE and account-management -> http://lists.puredata.info/listinfo/pd-list
I'm not very familiat with chmod codes. What does 4755 mean ?
Cheers,
Pierre.
2012/9/11 Miller Puckette msp@ucsd.edu
One slight tweak: if you type "sudo chmod 4755 /usr/bin/pd" you will probably be able to use the mouse clicklessly (at some expense to security!)
This will be unnecessary in release 0.44...
cheers Miller On Tue, Sep 11, 2012 at 07:32:16PM +0200, Pierre Massat wrote:
Dear List,
I managed to get the phase vocoder working on my Raspberry Pi, with the standard Raspbian wheezy distro. It works ok under the following conditions :
- no GUI activity (even moving the mouse results in awful scratches)
- the "delay" in Pd is set to at least 50ms
- 224 Mb of RAM is allocated to the CPU.
All this using the internal audio output.
This is quite encouraging...
Cheers,
Pierre.
Pd-list@iem.at mailing list UNSUBSCRIBE and account-management ->
Hi,
It means "setuid". That is, the program is run with the privileges of the owner of the program. In our case, that means "run pd as root". And so it can do anything it wants to your system.
Generally, root has no limits on ressources (cpu, memory, priority) compared to other users.
The setuid bit is more often used for programs like su or sudo for privilege escalation, or X (the display server) to be able to access the video card. But you can also use it as a quick hack to get unlimited credits :).
Pierre Massat wrote:
I'm not very familiat with chmod codes. What does 4755 mean ?
One slight tweak: if you type "sudo chmod 4755 /usr/bin/pd" you will probably be able to use the mouse clicklessly (at some expense to security!)
using 0.44, we manage to have it running with 25ms audio buffer using an external usb soundcard. 85% cpu about. no clicks.
cheers c
Le 11/09/2012 19:42, Miller Puckette a écrit :
One slight tweak: if you type "sudo chmod 4755 /usr/bin/pd" you will probably be able to use the mouse clicklessly (at some expense to security!)
This will be unnecessary in release 0.44...
cheers Miller On Tue, Sep 11, 2012 at 07:32:16PM +0200, Pierre Massat wrote:
Dear List,
I managed to get the phase vocoder working on my Raspberry Pi, with the standard Raspbian wheezy distro. It works ok under the following conditions :
- no GUI activity (even moving the mouse results in awful scratches)
- the "delay" in Pd is set to at least 50ms
- 224 Mb of RAM is allocated to the CPU.
All this using the internal audio output.
This is quite encouraging...
Cheers,
Pierre.
Pd-list@iem.at mailing list UNSUBSCRIBE and account-management -> http://lists.puredata.info/listinfo/pd-list
Pd-list@iem.at mailing list UNSUBSCRIBE and account-management -> http://lists.puredata.info/listinfo/pd-list
Hey Cyrille,
How big is the external USB soundcard? I'm really interested in the Pi as a very small device for running Pd, and my USB soundcard is good but really big compared to the form factor of the Pi. I'd be interested if anyone has found a soundcard that works well and has the same compact style - the cheap ebay dongle-sized ones may not be so good, but they are small. Does anyone have a good experience with one of these on a Pi or a regular PC machine?
I'd like to build installations with many Pi's emitting sound all at once, and so a small soundcard is a good thing :) Ed
Gemnotes-0.2: Live music notation for Pure Data, now with dynamics! http://sharktracks.co.uk/
From: Cyrille Henry ch@chnry.net To: Miller Puckette msp@ucsd.edu Cc: pd-list pd-list@iem.at Sent: Thursday, 13 September 2012, 23:36 Subject: Re: [PD] Running the phase vocoder example on the Raspberry Pi
using 0.44, we manage to have it running with 25ms audio buffer using an external usb soundcard. 85% cpu about. no clicks.
cheers c
Le 11/09/2012 19:42, Miller Puckette a écrit :
One slight tweak: if you type "sudo chmod 4755 /usr/bin/pd" you will probably be able to use the mouse clicklessly (at some expense to security!)
This will be unnecessary in release 0.44...
cheers Miller On Tue, Sep 11, 2012 at 07:32:16PM +0200, Pierre Massat wrote:
Dear List,
I managed to get the phase vocoder working on my Raspberry Pi, with the standard Raspbian wheezy distro. It works ok under the following conditions :
- no GUI activity (even moving the mouse results in awful scratches)
- the "delay" in Pd is set to at least 50ms
- 224 Mb of RAM is allocated to the CPU.
All this using the internal audio output.
This is quite encouraging...
Cheers,
Pierre.
Pd-list@iem.at mailing list UNSUBSCRIBE and account-management -> http://lists.puredata.info/listinfo/pd-list
Pd-list@iem.at mailing list UNSUBSCRIBE and account-management -> http://lists.puredata.info/listinfo/pd-list
Pd-list@iem.at mailing list UNSUBSCRIBE and account-management -> http://lists.puredata.info/listinfo/pd-list
hey ed,
this is what im using:
http://www.amazon.com/gp/product/B0069L9PZA/ref=oh_details_o05_s01_i01
its small and i got it because the usb plug is attached to a small cord so the in/out can be tucked somewhere (under the board?)
anyway... sound out is decent...
still no usable sound input though. as soon as i dont do -noadc the output gets all crackly. although even though it was crackly i did plug a guitar into the input and it sounded fine... other than it being all crackly that is...
oh and this was just using pd test patch.
m
On Fri, Sep 14, 2012 at 6:54 PM, Ed Kelly morph_2016@yahoo.co.uk wrote:
Hey Cyrille,
How big is the external USB soundcard? I'm really interested in the Pi as a very small device for running Pd, and my USB soundcard is good but really big compared to the form factor of the Pi. I'd be interested if anyone has found a soundcard that works well and has the same compact style - the cheap ebay dongle-sized ones may not be so good, but they are small. Does anyone have a good experience with one of these on a Pi or a regular PC machine?
I'd like to build installations with many Pi's emitting sound all at once, and so a small soundcard is a good thing :) Ed
Gemnotes-0.2: Live music notation for Pure Data, now with dynamics! http://sharktracks.co.uk/
From: Cyrille Henry ch@chnry.net To: Miller Puckette msp@ucsd.edu Cc: pd-list pd-list@iem.at Sent: Thursday, 13 September 2012, 23:36 Subject: Re: [PD] Running the phase vocoder example on the Raspberry Pi
using 0.44, we manage to have it running with 25ms audio buffer using an external usb soundcard. 85% cpu about. no clicks.
cheers c
Le 11/09/2012 19:42, Miller Puckette a écrit :
One slight tweak: if you type "sudo chmod 4755 /usr/bin/pd" you will probably be able to use the mouse clicklessly (at some expense to security!)
This will be unnecessary in release 0.44...
cheers Miller On Tue, Sep 11, 2012 at 07:32:16PM +0200, Pierre Massat wrote:
Dear List,
I managed to get the phase vocoder working on my Raspberry Pi, with the standard Raspbian wheezy distro. It works ok under the following conditions :
- no GUI activity (even moving the mouse results in awful scratches)
- the "delay" in Pd is set to at least 50ms
- 224 Mb of RAM is allocated to the CPU.
All this using the internal audio output.
This is quite encouraging...
Cheers,
Pierre.
Pd-list@iem.at mailing list UNSUBSCRIBE and account-management -> http://lists.puredata.info/listinfo/pd-list
Pd-list@iem.at mailing list UNSUBSCRIBE and account-management -> http://lists.puredata.info/listinfo/pd-list
Pd-list@iem.at mailing list UNSUBSCRIBE and account-management -> http://lists.puredata.info/listinfo/pd-list
Pd-list@iem.at mailing list UNSUBSCRIBE and account-management -> http://lists.puredata.info/listinfo/pd-list
hello Ed,
Le 15/09/2012 00:54, Ed Kelly a écrit :
Hey Cyrille,
How big is the external USB soundcard?
here is a picture : http://www.midiwall.com/gear/ua-1a/ but it's very old. i think any usb stereo soundcard (somes are very small) are using the same driver, so they sould work the same.
I'm really interested in the Pi as a very small device for running Pd, and my USB soundcard is good but really big compared to the form factor of the Pi. I'd be interested if anyone has found a soundcard that works well and has the same compact style - the cheap ebay dongle-sized ones may not be so good, but they are small. Does anyone have a good experience with one of these on a Pi or a regular PC machine? for performances, i'm using soudcard with spdif out (like ua-1X) or maybe this behringer (that i did not try) ,(currently, i'm using the spdif out of my asus laptop): http://www.homestudio.fr/behringer-uca202.html then, i've got a vc8 fostex DA converter that provide a very good sound.
I'd like to build installations with many Pi's emitting sound all at once, and so a small soundcard is a good thing :)
antoine did successfully use something like this : http://www.turtlebeach.com/products/sound-cards/audio-advantage-micro-ii.asp...
cheers c
Ed Gemnotes-0.2: Live music notation for Pure Data, now with dynamics! http://sharktracks.co.uk/
*From:* Cyrille Henry ch@chnry.net *To:* Miller Puckette msp@ucsd.edu *Cc:* pd-list pd-list@iem.at *Sent:* Thursday, 13 September 2012, 23:36 *Subject:* Re: [PD] Running the phase vocoder example on the Raspberry Pi
using 0.44, we manage to have it running with 25ms audio buffer using an external usb soundcard. 85% cpu about. no clicks.
cheers c
Le 11/09/2012 19:42, Miller Puckette a écrit :
One slight tweak: if you type "sudo chmod 4755 /usr/bin/pd" you will probably be able to use the mouse clicklessly (at some expense to security!)
This will be unnecessary in release 0.44...
cheers Miller On Tue, Sep 11, 2012 at 07:32:16PM +0200, Pierre Massat wrote:
Dear List,
I managed to get the phase vocoder working on my Raspberry Pi, with the standard Raspbian wheezy distro. It works ok under the following conditions :
- no GUI activity (even moving the mouse results in awful scratches)
- the "delay" in Pd is set to at least 50ms
- 224 Mb of RAM is allocated to the CPU.
All this using the internal audio output.
This is quite encouraging...
Cheers,
Pierre.
Pd-list@iem.at mailto:Pd-list@iem.at mailing list UNSUBSCRIBE and account-management -> http://lists.puredata.info/listinfo/pd-list
Pd-list@iem.at mailto:Pd-list@iem.at mailing list UNSUBSCRIBE and account-management -> http://lists.puredata.info/listinfo/pd-list
Pd-list@iem.at mailto:Pd-list@iem.at mailing list UNSUBSCRIBE and account-management -> http://lists.puredata.info/listinfo/pd-list
Aha!
OK that's really small. Good work!
Ed Gemnotes-0.2: Live music notation for Pure Data, now with dynamics! http://sharktracks.co.uk/
From: Cyrille Henry ch@chnry.net To: Ed Kelly morph_2016@yahoo.co.uk Cc: Miller Puckette msp@ucsd.edu; pd-list pd-list@iem.at; Antoine Villeret antoine.villeret@gmail.com Sent: Saturday, 15 September 2012, 7:32 Subject: Re: [PD] Running the phase vocoder example on the Raspberry Pi
hello Ed,
Le 15/09/2012 00:54, Ed Kelly a écrit :
Hey Cyrille,
How big is the external USB soundcard?
here is a picture : http://www.midiwall.com/gear/ua-1a/ but it's very old. i think any usb stereo soundcard (somes are very small) are using the same driver, so they sould work the same.
I'm really interested in the Pi as a very small device for running Pd, and my USB soundcard is good but really big compared to the form factor of the Pi. I'd be interested if anyone has found a soundcard that works well and has the same compact style - the cheap ebay dongle-sized ones may not be so good, but they are small. Does anyone have a good experience with one of these on a Pi or a regular PC machine? for performances, i'm using soudcard with spdif out (like ua-1X) or maybe this behringer (that i did not try) ,(currently, i'm using the spdif out of my asus laptop): http://www.homestudio.fr/behringer-uca202.html then, i've got a vc8 fostex DA converter that provide a very good sound.
I'd like to build installations with many Pi's emitting sound all at once, and so a small soundcard is a good thing :)
antoine did successfully use something like this : http://www.turtlebeach.com/products/sound-cards/audio-advantage-micro-ii.asp...
cheers c
Ed Gemnotes-0.2: Live music notation for Pure Data, now with dynamics! http://sharktracks.co.uk/
--
*From:* Cyrille Henry ch@chnry.net *To:* Miller Puckette msp@ucsd.edu *Cc:* pd-list pd-list@iem.at *Sent:* Thursday, 13 September 2012, 23:36 *Subject:* Re: [PD] Running the phase vocoder example on the Raspberry Pi
using 0.44, we manage to have it running with 25ms audio buffer using an external usb soundcard. 85% cpu about. no clicks.
cheers c
Le 11/09/2012 19:42, Miller Puckette a écrit : > One slight tweak: if you type "sudo chmod 4755 /usr/bin/pd" you will > probably be able to use the mouse clicklessly (at some expense to security!) > > This will be unnecessary in release 0.44... > > cheers > Miller > On Tue, Sep 11, 2012 at 07:32:16PM +0200, Pierre Massat wrote: >> Dear List, >> >> I managed to get the phase vocoder working on my Raspberry Pi, with the >> standard Raspbian wheezy distro. >> It works ok under the following conditions : >> - no GUI activity (even moving the mouse results in awful scratches) >> - the "delay" in Pd is set to at least 50ms >> - 224 Mb of RAM is allocated to the CPU. >> >> All this using the internal audio output. >> >> This is quite encouraging... >> >> Cheers, >> >> Pierre. > >> _______________________________________________ >> Pd-list@iem.at mailto:Pd-list@iem.at mailing list >> UNSUBSCRIBE and account-management -> http://lists.puredata.info/listinfo/pd-list > > > _______________________________________________ > Pd-list@iem.at mailto:Pd-list@iem.at mailing list > UNSUBSCRIBE and account-management -> http://lists.puredata.info/listinfo/pd-list >
Pd-list@iem.at mailto:Pd-list@iem.at mailing list UNSUBSCRIBE and account-management -> http://lists.puredata.info/listinfo/pd-list
Try adding this to the CFLAGS when compiling:
-mfpu=vfp -mfloat-abi=hard
This will enable the hardware floating point unit on the ARM which is actually the vector processor. It is apparently off by default so everyone might be using integer fixed point which would be very slow. Hopefully this will help performance.
On Thu, Sep 13, 2012 at 6:36 PM, Cyrille Henry ch@chnry.net wrote:
using 0.44, we manage to have it running with 25ms audio buffer using an external usb soundcard. 85% cpu about. no clicks.
cheers c
Le 11/09/2012 19:42, Miller Puckette a écrit :
One slight tweak: if you type "sudo chmod 4755 /usr/bin/pd" you will
probably be able to use the mouse clicklessly (at some expense to security!)
This will be unnecessary in release 0.44...
cheers Miller On Tue, Sep 11, 2012 at 07:32:16PM +0200, Pierre Massat wrote:
Dear List,
I managed to get the phase vocoder working on my Raspberry Pi, with the standard Raspbian wheezy distro. It works ok under the following conditions :
- no GUI activity (even moving the mouse results in awful scratches)
- the "delay" in Pd is set to at least 50ms
- 224 Mb of RAM is allocated to the CPU.
All this using the internal audio output.
This is quite encouraging...
Cheers,
Pierre.
______________________________**_________________
Pd-list@iem.at mailing list UNSUBSCRIBE and account-management -> http://lists.puredata.info/** listinfo/pd-list http://lists.puredata.info/listinfo/pd-list
______________________________**_________________ Pd-list@iem.at mailing list UNSUBSCRIBE and account-management -> http://lists.puredata.info/** listinfo/pd-list http://lists.puredata.info/listinfo/pd-list
______________________________**_________________ Pd-list@iem.at mailing list UNSUBSCRIBE and account-management -> http://lists.puredata.info/** listinfo/pd-list http://lists.puredata.info/listinfo/pd-list
hello,
we resintall pd using autoconf and adding this flags. this example now run at 65% cpu on the same condition (external usb soundcard, 25ms audio buffer)
thanks cheers
Le 16/09/2012 19:18, chris clepper a écrit :
Try adding this to the CFLAGS when compiling:
|-mfpu=vfp -mfloat-abi=hard|
This will enable the hardware floating point unit on the ARM which is actually the vector processor. It is apparently off by default so everyone might be using integer fixed point which would be very slow. Hopefully this will help performance.
On Thu, Sep 13, 2012 at 6:36 PM, Cyrille Henry <ch@chnry.net mailto:ch@chnry.net> wrote:
using 0.44, we manage to have it running with 25ms audio buffer using an external usb soundcard. 85% cpu about. no clicks. cheers c Le 11/09/2012 19:42, Miller Puckette a écrit : One slight tweak: if you type "sudo chmod 4755 /usr/bin/pd" you will probably be able to use the mouse clicklessly (at some expense to security!) This will be unnecessary in release 0.44... cheers Miller On Tue, Sep 11, 2012 at 07:32:16PM +0200, Pierre Massat wrote: Dear List, I managed to get the phase vocoder working on my Raspberry Pi, with the standard Raspbian wheezy distro. It works ok under the following conditions : - no GUI activity (even moving the mouse results in awful scratches) - the "delay" in Pd is set to at least 50ms - 224 Mb of RAM is allocated to the CPU. All this using the internal audio output. This is quite encouraging... Cheers, Pierre. _________________________________________________ Pd-list@iem.at <mailto:Pd-list@iem.at> mailing list UNSUBSCRIBE and account-management -> http://lists.puredata.info/__listinfo/pd-list <http://lists.puredata.info/listinfo/pd-list> _________________________________________________ Pd-list@iem.at <mailto:Pd-list@iem.at> mailing list UNSUBSCRIBE and account-management -> http://lists.puredata.info/__listinfo/pd-list <http://lists.puredata.info/listinfo/pd-list> _________________________________________________ Pd-list@iem.at <mailto:Pd-list@iem.at> mailing list UNSUBSCRIBE and account-management -> http://lists.puredata.info/__listinfo/pd-list <http://lists.puredata.info/listinfo/pd-list>
Better but I expected it to drop under 50% by doing that. Maybe most of the time is spend doing something other than FP DSP computation?
What's the load with the test patch sine output?
On Sun, Sep 16, 2012 at 3:18 PM, Cyrille Henry ch@chnry.net wrote:
hello,
we resintall pd using autoconf and adding this flags. this example now run at 65% cpu on the same condition (external usb soundcard, 25ms audio buffer)
thanks cheers
Le 16/09/2012 19:18, chris clepper a écrit :
Try adding this to the CFLAGS when compiling:
|-mfpu=vfp -mfloat-abi=hard|
This will enable the hardware floating point unit on the ARM which is actually the vector processor. It is apparently off by default so everyone might be using integer fixed point which would be very slow. Hopefully this will help performance.
On Thu, Sep 13, 2012 at 6:36 PM, Cyrille Henry <ch@chnry.net mailto: ch@chnry.net> wrote:
using 0.44, we manage to have it running with 25ms audio buffer usingan external usb soundcard. 85% cpu about. no clicks.
cheers c Le 11/09/2012 19:42, Miller Puckette a écrit : One slight tweak: if you type "sudo chmod 4755 /usr/bin/pd" youwill probably be able to use the mouse clicklessly (at some expense to security!)
This will be unnecessary in release 0.44... cheers Miller On Tue, Sep 11, 2012 at 07:32:16PM +0200, Pierre Massat wrote: Dear List, I managed to get the phase vocoder working on my RaspberryPi, with the standard Raspbian wheezy distro. It works ok under the following conditions : - no GUI activity (even moving the mouse results in awful scratches) - the "delay" in Pd is set to at least 50ms - 224 Mb of RAM is allocated to the CPU.
All this using the internal audio output. This is quite encouraging... Cheers, Pierre. ______________________________**___________________ Pd-list@iem.at <mailto:Pd-list@iem.at> mailing list UNSUBSCRIBE and account-management ->http://lists.puredata.info/__**listinfo/pd-listhttp://lists.puredata.info/__listinfo/pd-list< http://lists.puredata.info/**listinfo/pd-listhttp://lists.puredata.info/listinfo/pd-list
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______________________________**___________________ Pd-list@iem.at <mailto:Pd-list@iem.at> mailing list UNSUBSCRIBE and account-management -> http://lists.puredata.info/__**listinfo/pd-list http://lists.puredata.info/__listinfo/pd-list < http://lists.puredata.info/**listinfo/pd-listhttp://lists.puredata.info/listinfo/pd-list
Le 16/09/2012 22:39, chris clepper a écrit :
Better but I expected it to drop under 50% by doing that. Maybe most of the time is spend doing something other than FP DSP computation?
What's the load with the test patch sine output?
about 22% c
On Sun, Sep 16, 2012 at 3:18 PM, Cyrille Henry <ch@chnry.net mailto:ch@chnry.net> wrote:
hello, we resintall pd using autoconf and adding this flags. this example now run at 65% cpu on the same condition (external usb soundcard, 25ms audio buffer) thanks cheers Le 16/09/2012 19:18, chris clepper a écrit : Try adding this to the CFLAGS when compiling: |-mfpu=vfp -mfloat-abi=hard| This will enable the hardware floating point unit on the ARM which is actually the vector processor. It is apparently off by default so everyone might be using integer fixed point which would be very slow. Hopefully this will help performance. On Thu, Sep 13, 2012 at 6:36 PM, Cyrille Henry <ch@chnry.net <mailto:ch@chnry.net> <mailto:ch@chnry.net <mailto:ch@chnry.net>>> wrote: using 0.44, we manage to have it running with 25ms audio buffer using an external usb soundcard. 85% cpu about. no clicks. cheers c Le 11/09/2012 19:42, Miller Puckette a écrit : One slight tweak: if you type "sudo chmod 4755 /usr/bin/pd" you will probably be able to use the mouse clicklessly (at some expense to security!) This will be unnecessary in release 0.44... cheers Miller On Tue, Sep 11, 2012 at 07:32:16PM +0200, Pierre Massat wrote: Dear List, I managed to get the phase vocoder working on my Raspberry Pi, with the standard Raspbian wheezy distro. It works ok under the following conditions : - no GUI activity (even moving the mouse results in awful scratches) - the "delay" in Pd is set to at least 50ms - 224 Mb of RAM is allocated to the CPU. All this using the internal audio output. This is quite encouraging... Cheers, Pierre. ___________________________________________________ Pd-list@iem.at <mailto:Pd-list@iem.at> <mailto:Pd-list@iem.at <mailto:Pd-list@iem.at>> mailing list UNSUBSCRIBE and account-management -> http://lists.puredata.info/____listinfo/pd-list <http://lists.puredata.info/__listinfo/pd-list> <http://lists.puredata.info/__listinfo/pd-list <http://lists.puredata.info/listinfo/pd-list>> ___________________________________________________ Pd-list@iem.at <mailto:Pd-list@iem.at> <mailto:Pd-list@iem.at <mailto:Pd-list@iem.at>> mailing list UNSUBSCRIBE and account-management -> http://lists.puredata.info/____listinfo/pd-list <http://lists.puredata.info/__listinfo/pd-list> <http://lists.puredata.info/__listinfo/pd-list <http://lists.puredata.info/listinfo/pd-list>> ___________________________________________________ Pd-list@iem.at <mailto:Pd-list@iem.at> <mailto:Pd-list@iem.at <mailto:Pd-list@iem.at>> mailing list UNSUBSCRIBE and account-management -> http://lists.puredata.info/____listinfo/pd-list <http://lists.puredata.info/__listinfo/pd-list> <http://lists.puredata.info/__listinfo/pd-list <http://lists.puredata.info/listinfo/pd-list>>
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Charles Goyard -
chris clepper -
Cyrille Henry -
Ed Kelly -
m.e.grimm -
Miller Puckette -
Pierre Massat