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'[EE] Wireless Audio Suggestions?'
2012\03\13@170728 by Josh Koffman

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Hi All,

I've had an idea, and I'm trying to figure out how hard it would be to
throw together a prototype to see if it'd be useful. The basic idea is
a sort of wireless headset extender. This device would sit in between
a specific wired headset and its base station and provide
"wanderability". My initial thought was to use a WT32 module from
BlueGiga as I've used their WT12 module before and they work quite
nicely. An added advantage of this is that the system would be using
standard Bluetooth profiles, so phase I could be a transmitter with a
standard Bluetooth headset used on the person side of things. Then a
custom headset with larger battery, controls, etc could be added
later.

However...full Bluetooth capability is mostly overkill. So is there a
simpler solution anyone can come up with? I'd be looking for a system
that can transmit and receive a mono signal in each direction
simultaneously. This isn't HiFi, but needs to be decent enough that
the signal is intelligible across a large range of background noise.
Range is 20-30 feet (more is a plus though). I'm trying to keep the
complexity down, so a module or at the very least a chip that didn't
require external ADC and DAC would be nice.

Any thoughts?

Thanks!

Josh
-- A common mistake that people make when trying to design something
completely foolproof is to underestimate the ingenuity of complete
fools.
        -Douglas Adams

2012\03\13@185122 by Harold Hallikainen

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Well... I have one of these:

http://www.knightkit.com/


Harold



-- FCC Rules Updated Daily at http://www.hallikainen.com - Advertising
opportunities available!
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2012\03\13@191136 by Reginaldo Duarte

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You have two options, wait until itead release the headphones with
nrf24z1<iteadstudio.com/application-note/make-a-wireless-speakers-headphones-with-nrf24z1/>for
a low cost low quality solution, or just go ahead and buy the
pure-path
audio transceiver<estore.ti.com/CC85XXDK-HEADSET-PurePath-Wireless-Headset-Development-Kit-P2452.aspx>from
TI for a excellent quality solution.

Some times TI offer the PurePath with a nice discount at
TIDeals<http://tideals.com/>
..


/*  Reginaldo Duarte *

2012\03\13@203356 by Josh Koffman

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On Tue, Mar 13, 2012 at 6:51 PM, Harold Hallikainen
<spam_OUTharoldTakeThisOuTspamhallikainen.org> wrote:
> Well... I have one of these:
>
> http://www.knightkit.com/

Hm...I dig it. I'm a little worried about the length of a proper 1/4
wave antenna and the trip potential it may cause...

Josh
-- A common mistake that people make when trying to design something
completely foolproof is to underestimate the ingenuity of complete
fools.
        -Douglas Adams

2012\03\13@204615 by Josh Koffman

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On Tue, Mar 13, 2012 at 7:11 PM, Reginaldo Duarte <.....regiscruzbrKILLspamspam@spam@gmail.com> wrote:
> You have two options, wait until itead release the headphones with
> nrf24z1<http://iteadstudio.com/application-note/make-a-wireless-speakers-headphones-with-nrf24z1/>for

Hadn't seen this one. Interesting, but one way only, so I'd have to
run two on either end.

> a low cost low quality solution, or just go ahead and buy the
> pure-path
> audio transceiver<estore.ti.com/CC85XXDK-HEADSET-PurePath-Wireless-Headset-Development-Kit-P2452.aspx>from
> TI for a excellent quality solution.
>
> Some times TI offer the PurePath with a nice discount at
> TIDeals<http://tideals.com/>

I found the PurePath stuff, but from what I read it seemed to be
mainly one way only and all digital. Further reading on your link
shows that I am wrong, however, according to them, bi-directional
audio is not supported yet. So...I'm only partially wrong. I'll keep
watching that one though, I like that it's a complete unit that I
could interface to.

Josh
-- A common mistake that people make when trying to design something
completely foolproof is to underestimate the ingenuity of complete
fools.
        -Douglas Adams

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