Hello guys, I am new to building circuits and RF but i have an idea to use a 8 channel transmitter and 8 channel receiver audio device. Well actually 2 devices. I need them to be mono and completely separate quality audio. Does anyone have any ideas on this? All i have found is 2 channel audio devices. I look forward to any input and direction.

John

 

You should use a modulation type and the respective carrier frequencies.

 

What rf frequencies are you planning to use? The bandwidth? Power level? Modulation mode?
What's the bandwidth of the audio? Power level?
What are the physical size requirements? Antenna size requirement? Power availability? Range? Environment?

How about sixteen "personal radios"? What's two cheap units cost now? 25 bucks maybe. You might even get a bulk discount.

 

Depending upon what you mean by "quality audio" and your range requirements, and a lot of factors that we don't know about, you might be able to do it by digitizing and combine the audio streams and send them through this device which can give you up to 2 Mb/s.

Nordic nRF24L01​

 

I apologize I am really new to building. I need a range of about 50 feet and would like the receivers to be wearable. combining audio streams could be fine if it doesn't have a noticeable lag time. This will( I hope) be used to mix personal monitor system(earphones) in a live performance setting. Can you point me to some education material on combining audio streams or a diagram?

Thank you for replying,
John

 

I think the UHF would be less crowded. I only need around 50 feet of reliable transmission. I am new to this so I have not considered all variables (sorry). I hope to build and wear the receiver and be able to mix the signals. The environment will change as this will be used for live performances.
Thanks for the reply,
John

 

Maybe this is the sort of need that is best filled with a commercially developed product or combination of products, maybe as BR-549 suggested in post #3. Ground-up development can become very hairy, especially if you consider the issues of interference (both causing and receiving) and signal quality. Then there is always the issue of hand-built gear failing at exactly the wrong time because it was not tested enough or under the right conditions.

Have you shopped for anything like this?

 

I'll bet there is all kinds of rf in that environment. Have you considered direct induction? You would need to research it.

Basically you give the environment that your gonna be in a magnetic dipole. You surround the area with a conductive loop.

One can put a carrier on that dipole........or modulate the dipole directly. These systems can be used in place of conventional PA (Public Address) systems. The speaker speaks into a mic.......but instead of being amplified to a speaker........it goes to the loop.

And the public listens to the loop thru earbud receivers.

Magnetic sound.