thanks Nicolas!!
2014-07-17 9:34 GMT+02:00 via Pd-list pd-list@lists.iem.at:
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Today's Topics:
- Re: Jonathan Wilkes via Pd-list pd-list@lists.iem.at (Simon Wise via Pd-list)
- Re: Jonathan Wilkes via Pd-list pd-list@lists.iem.at (Jonathan Wilkes via Pd-list)
- Re: Jonathan Wilkes via Pd-list pd-list@lists.iem.at (Simon Wise via Pd-list)
- Re: readanysf~ on mac OS X (Nicolas Montgermont via Pd-list)
- Re: readanysf~ on mac OS X (Roman Haefeli via Pd-list)
Message: 1 Date: Thu, 17 Jul 2014 13:49:26 +1000 From: Simon Wise via Pd-list pd-list@lists.iem.at To: pd-list@lists.iem.at Subject: Re: [PD] Jonathan Wilkes via Pd-list pd-list@lists.iem.at Message-ID: 53C747C6.8060401@gmail.com Content-Type: text/plain; charset=UTF-8; format=flowed
On 16/07/14 02:52, Ivica Bukvic via Pd-list wrote:
Depends what you mean by decent enough. Original Pi has audio out. Is it decent enough, depends on your needs. That said, RPi (regardless of the revision) is a formidable arduino replacement. See lots of pots shield
that
fits either (I just presented a paper on it in NIME) made by modern
device.
Couple that with an $9 USB audio card that has both input and output and you're done.
or lash out on a $35 wolfson card if you need stereo in and out plus more, and want to avoid the usb.
certainly the Raspberries are cheaper than the Udoo, even with this card included ... but 3+ x the price of a Raspberry does get you a lot more computing power (4 much faster CPU cores plus an Arduino Due core with all the analogue and digital IO exposed and internally connected ... and the GPUs have openCL available and much more comprehensive documentation if you want to use them at a very raw level). There are much better peripherals included if you need that. Not sure yet how the audio noise compares between the wolfson, plain raspberry and udoo but will test and report eventually
Simon.
Message: 2 Date: Thu, 17 Jul 2014 00:33:20 -0400 From: Jonathan Wilkes via Pd-list pd-list@lists.iem.at To: pd-list@lists.iem.at Subject: Re: [PD] Jonathan Wilkes via Pd-list pd-list@lists.iem.at Message-ID: 53C75210.7000509@yahoo.com Content-Type: text/plain; charset=UTF-8; format=flowed
On 07/16/2014 11:36 PM, Simon Wise via Pd-list wrote:
On 16/07/14 00:15, Dan Wilcox via Pd-list wrote:
The onbopard audio might be better, but from what I could tell by the press release, it does't add a dedicated USB controller. In that case, it will probably still have the same issues with USB audio devices.
Anybody played with the new Raspberry Pi model? It claims to haveimproved
audio; I'm curious how that would effect a running instance of Pd on the Pi.
Haven't got mine delivered yet (it is on the way) but looking at the (minimal) schematics provided so far they have improved the power .. the miniUSB has gone up from 1.1 amps to 2 amps with a regulator added. Also the whole is said to draw significantly less power (why???) .. so other things have changed also. The USB/Ethernet hub has been changed to the 4-out version of the same chip, maybe this version is also better in other ways? I don't know if this hub is the problem for usb, or if the problem is the usb out of the main chip ... if the model A (without this hub) does better with usb audio cards than model B then the problem is here, but I have not got a model A to test with.
The board layout is completely new, so it might also be cleaner for audio? I will test noise and latency when it gets here.
I ordered one the other day, so I'll definitely test it, too. (I've never played with an RPI before, so I'll probably doing some general playing around before getting to Pd specifically.)
I have just received 2 wolfson audio cards, which use the digital PCM link (rather than usb) and also expose another PCM link on a header plus a clock input (to the Pi header). They are quite flexible as far as clocking goes so several Pis could run these and share a single clock source (and pass digital audio between them), so I'll be testing that. It mounts onto the B-rev2 using the digital PCM on the 8 holes near the main 26 pin breakout. The B+ adds more GPIOs to a 40 pin breakout instead which include this stereo PCM link (and several others ... the clock, PWM and most of the digital interfaces can now be used simultaneously) but the digital audio is on different GPIOs so there will need to be some patching and some leads made up to use it on the B+. Unfortunately the wolfson card does not bring out the balanced audio pins from the chip (it has multiple DAC/ADCs) but instead it connects built in stereo mics, 2W amplified outputs and such.
The B rev2 schematics with the old power in and showing the low pass filter circuit on the PWM outputs providing the analogue audio:
http://www.raspberrypi.org/wp-content/uploads/2012/10/Raspberry-Pi-R2.0-Sche...
or
http://www.raspberrypi.org/documentation/hardware/raspberrypi/Raspberry-Pi-R...
power is top of page 1, audio is lower right of page 2.
the new schematics with new power etc, with no mention of changes to the audio filter circuit (just the changes to the audio jack):
http://www.raspberrypi.org/documentation/hardware/raspberrypi/Raspberry-Pi-B...
here is a photo with the new layout and new USB chip:
http://www.raspberrypi.org/wp-content/uploads/2014/07/rsz_b-.jpg
This is all very exciting!
-Jonathan
Simon
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Message: 3 Date: Thu, 17 Jul 2014 15:42:22 +1000 From: Simon Wise via Pd-list pd-list@lists.iem.at To: pd-list@lists.iem.at Subject: Re: [PD] Jonathan Wilkes via Pd-list pd-list@lists.iem.at Message-ID: 53C7623E.9080308@gmail.com Content-Type: text/plain; charset=UTF-8; format=flowed
On 17/07/14 14:33, Jonathan Wilkes via Pd-list wrote:
I ordered one the other day, so I'll definitely test it, too. (I've
never played
with an RPI before, so I'll probably doing some general playing around
before
getting to Pd specifically.)
They are good value and compact, but rather limited compared to units that cost a bit more. I've done a few projects, they are probably most useful for video playback and working with GPIO input, the wolfson card may make them good for stereo audio also ... but the access to the GPU is fairly closed and I've struggled to get them to do what I want, kind of got there ... certainly playing a single HD video with sound through hdmi is good, 3D mapping is possible, also alpha overlays ... but it is still very much custom per project at the moment for me. Playing HD is very much at the limit of what they can do and requires a lot of tweaking and compromises depending on what is wanted each time. They can do more at lower resolutions. Documentation beyond the sample code is limited. The GPIO stuff has some nice libraries and works well.
Sometime later this year I'll have something more generalised and usable that I can share, but for now it really is too messy.
Simon
Message: 4 Date: Thu, 17 Jul 2014 09:01:20 +0200 From: Nicolas Montgermont via Pd-list pd-list@lists.iem.at To: pd-list@lists.iem.at Subject: Re: [PD] readanysf~ on mac OS X Message-ID: 53C774C0.2010600@yahoo.fr Content-Type: text/plain; charset="utf-8"
It is included in Pd extended normally. You can use Pd-ext or its readanysf~ binary if you use Pd vanilla 32 bits 0.43+ n
Le 16/07/2014 16:09, Oskoff via Pd-list a écrit :
Hi all!
I am using [readanysf~] http://aug.ment.org/readanysf/ and work very well on my ubuntu, but i try the patch in a mac OS X and the binary versión from http://aug.ment.org/readanysf/download.php dont work
maybe, somebody have made a more update binary ??
thanks!
oskoff
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Oskoff via Pd-list