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Transmitting audio wirelessly?

Hello! I'm putting together the plans for my next electronics project, and the one thing I'm not sure if I can do is transmit audio wirelessly - ignoring the rest of the project, it becomes something like a wireless headphone connector - I plug circuit A into my computer (via USB and via the audio-out) and I plug circuit B into my headphones.

Is there any projects described online that meet this general idea? I looked around, but I didn't find anything.

I was thinking of using the TWS-434 and RWS-434 parts from rentron for the transmitter / reciever - 433Mhz. Although, this is mostly since they're the only such parts I've used - I'd love suggestions on what would be better suited. Cheaper is always nice, but I don't want to get something that won't work well.

Are there any good / simple IC's that'd be suited for this? I'm thinking I'd need an analog to digital converter and a matching digital to analog converter. Is there a simple method to get some basic error correction encoding as well? My wild guesstimates of bandwith say I should have lots to spare for such things.

I'll probably have a picbasic controller in both sides of the project, if that'd help with anything. I'd also like to be able to transmit some other information than just the audio (not a whole lot, but still) - if there's a good way to do that (if not, I'll invent a not-so-good way :D )

Thanks,

--Murph

Reply to
Murph
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You mean like those wireless headphones I got for the wife a few years back?

When I was a kid they had this thing called 'radio'...... Later versions did stereo and then hybrid digital.

GG

Reply to
stratus46

You should look in an office products catalog, Office receptionists use just what you're looking for.

Reply to
zzbunker

Oops. I read "wirelessly" as meaning "without wireless"? Or in other words without using a wireless or radio device at all; correct? So maybe infra red or visible light using some sort of fibre optic device is required? Alternatively one could use audio frequency induction as once used in a large UK church/cathedral. Magnetic loops fed from audio amplifiers were installed below floors; and low impedance pickup loops coupled directly to loudspeakers installed in the pews produced audio for members of the congregation.

Reply to
terry

Bluetooth?

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Reply to
mrdarrett

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Many large building auditoriums for example incorporate a magnetic loop of several turns* around the seating area. Users of hearing aids, provided they have a magnetic pick up loop attached to or incorporated into their device, can pick up and hear any program fed to the building loop by an audio amplifier; often just another output of the public address amplifier.

So a simple audio hearing aid or small audio amp. with a pickup loop should be fairly easily obtainable?

It also possible in certain circumstances to feed audio through the earth to be picked up by wires attached two earth electrodes. But not very portable!

  • the several turns of the loop can be provided by a multi wire cable. For example a six pair cable with all the conductors wired in series can provide a 12 turn loop around a whole building, hall or seating area. AFIK when a local church was rebuilt a few years ago such loop wiring was incorporated into the walls of the building.
Reply to
terry

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