>
> Date: Wed, 11 Jul 2012 10:16:48 +0100
> From: Dave Malham
> Subject: Re: [Sursound] Waveplayer - 16 chnl SD-card audio device
> To: Surround Sound discussion group
> Message-ID: <4ffd4480.2090...@york.ac.uk>
> Content-Type: text/plain; charset=ISO-8859-1; format=
Hi Marc
On 11/07/2012 02:27, Marc Lavallée wrote:
Hi Dave
Dave Malham a écrit :
Hi Marc
I've certainly thought about doing that, but not initially since it
means that
(a) you would be limited to passive speakers
This limitation is a feature: with less hardware the cost is lowered
and the q
Hi Dave
Dave Malham a écrit :
> Hi Marc
>
> I've certainly thought about doing that, but not initially since it
> means that
>
> (a) you would be limited to passive speakers
This limitation is a feature: with less hardware the cost is lowered
and the quality is raised. It would be a good choi
Thought you just might have meant that :-)
Dave
On 10/07/2012 02:24, Marc Lavallée wrote:
I meant:
"one D/A conversion"
I wrote:
It's possible to skip the A/D conversion by using amplifiers with
digital inputs. Texas Instruments have a 8 channels digital to PWM
converter that can drive D-
Hi Marc
I've certainly thought about doing that, but not initially since it means that
(a) you would be limited to passive speakers
(b) the specs aren't as good as the Analog Devices ADAU1966, the evaluation board for which is
sitting next to me :-)
(c) serious levels of hardware design neede
I meant:
"one D/A conversion"
I wrote:
> It's possible to skip the A/D conversion by using amplifiers with
> digital inputs. Texas Instruments have a 8 channels digital to PWM
> converter that can drive D-class amps with PWM inputs; that means only
> one A/D conversion, done by the speaker...
>
Dave,
It's possible to skip the A/D conversion by using amplifiers with
digital inputs. Texas Instruments have a 8 channels digital to PWM
converter that can drive D-class amps with PWM inputs; that means only
one A/D conversion, done by the speaker...
http://www.ti.com/product/TAS5508C
Marc
Hi Marc,
True, I'm sure you could use a usb interface, but even a low cost multichannel unit would be
quite a lot more expensive (and, probably, power hungry) than the PI whereas Analog Devices (for
instance) do a 16 channel, 24 bit, 192kHz DASC IC for around 10 ukp (ADAU1966) which would p
The snd_bcm2835 driver is for the integrated stereo sound module.
For more channels, a cheap 8 channels USB sound module would probably
work, and ALSA drivers for many sound modules are stable.
Martin Leese a écrit :
> Dave Malham wrote:
>
> > The Raspberry PI is really cheap and runs Linux,
Dave Malham wrote:
> The Raspberry PI is really cheap and runs Linux, so it does provide some
> real possibilities, though
> it is, in some ways, quite limited - max 256m ram at present, for instance -
...
> it seems that the SPI pins are available on a standard header so shouldn't
> be too diffi
The Raspberry PI is really cheap and runs Linux, so it does provide some real possibilities, though
it is, in some ways, quite limited - max 256m ram at present, for instance - and documentation is
currently not really in a "this is how you do it" state
(http://www.element14.com/community/docs/
Le 12-04-20 14:54, Jan Jacob Hofmann a écrit :
>I was pointed to a device, which is able to play audio-files of up to
>16 channels without the need of a computer as a stand-alone device. It
>is basically a SD-card player and I wonder, if this might be
>interesting for some on this list.
Here's so
Personally, for a museum or attraction install, I'd rather go for one of the
long established systems, like Richmond Sound Design's AudioBox II
(http://www.richmondsounddesign.com/audiobox-ii.html)
Last year I replaced an original 8 unit Audiobox install at Madame Tussauds New
York, that had b
For predecoded audio properly dithered and almost-normalized 16-bit is
perfectly adequate; I'd be more worried about the jitter from a bad clock than
about the limited wordlength.
Sent from my mobile phone
On 23 Apr 2012, at 10:00, Dave Malham wrote:
> AS you say, great for installations, Amb
Hi,
Date: Fri, 20 Apr 2012 20:54:16 +0200
From: Jan Jacob Hofmann
Dear list,
I was pointed to a device, which is able to play audio-files of up to
16 channels without the need of a computer as a stand-alone device. It
is basically a SD-card player and I wonder, if this might be
interesting f
AS you say, great for installations, Ambisonic or not - I could really have done with this device a
year ago for a non-Ambisonic project! It's a pity it doesn't do 24 bit audio as this would make it
more attractive still. Still, at that price...I presume the 200 Euro is for the multichannel versi
I could immagine using it for installations and concerts playing
predecoded ambisonic music. For permanent installations I guess it
could convenient because any of the staff of a museum could easily
operate it. For concerts it would be convenient for me because I would
not have to travel wi
It's also really small, the question is how much power supply adds to the bulk,
wonder if USB power would be sufficient to run a 16 channel setup...
...similar thing able to take digital audio (FW) and store the would be killer,
but would likely require collaboration with specific hardware manuf
One could play predecoded Ambisonics anywhere there's a power amp designed to
take analog inputs from multichannel DVD/SACD players; which might be useful
for demos where a decoder is impractical or impossible to hook into a
preexisting setup.
Sent from my mobile phone
On 20 Apr 2012, at 21:29
That is a pretty cool project.
Having said that, I don't know what I would do with one. As it stands it's a
2-channel player, but it's possible to get a 2-channel player for less than
that. If you expand it to 8 or 16 channels, then it's unique, but I still
don't
know what I would do with it
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