Doug Sutherland wrote:
Georg,
My original plan was to design a generic add-on board for
embedded single board computers that includes an audio
codec, FM tuner, and optional text-to-speech. I still have
that plan but may make several variants on this, I have lots
of interest in mobile audio beyond what is available today.
TI has chips that can convert USB audio (driverless on
host) to I2S and/or S/PDIF, which would allow for some
really interesting possibilities in supporting different kinds
of codecs, DACs, ADCs, DSPs, faders etc.
Is it only the FM tuner you are interested in? Do you
have skills with Eagle CAD? I have surface mount
reflow oven and can solder any part easily. I also have
Eagle commercial version but at the moment do not have
a lot of time. If you want to work with me on schematics
and CAD design for starters that would be cool.
Look at the TI PCM29xx USB audio codecs, this is a
way to interface via USB to other audio devices. It is
also interesting that Neo uses WM8753, as I have been
wanting to work with this part for a long time, since it
has dual audio codecs voice and hifi. The TI TAS3103
also looks pretty interesting.
I have some SI4701 FM tuner chips here already,
have their USB FM radio stick which is really a demo
of the chipset, and have collected lots of info on these.
I also have sample WM8753, will be getting more,
and development boards for both of these chips
eventually.
-- Doug
Doug Sutherland
Proficio Research
http://www.proficio.ca/
Doug,
my skills concerning all that are very limited, because I've got no
education going deep enough into electronics - just wanted to mention
that in the beginning. Nevertheless I'm very interested to learn some
things. I already can handle eagle and I'm able to understand some
smaller circuits, but I'm just a beginner!
My primary interest is in a FM transmitter and receiver (but your
proposal doesn't sound bad, in the contrary). I already spoke to a
friend of mine who's a lot more qualified to realise that than me, who's
interested in building that too. (and who eventually may help)
At the moment I'm quite occupied with the preparations for a big examen
end of November but after this one I should have more time to get an
insight into the codecs and chips you mentioned and maybe even
contribute some assistance as far as possible.
. Georg
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