There must be something already out there, which I don't know about, which I could use or adapt.

Problem: Deaf person wants to feel the beat of the music she's dancing to.
So I'm looking for a device I can put near the source with mike and transmitter, to send audio to a small device on her wrist - watch sized preferably, to vibrate on the beat. Maybe using a speaker without its cone.(Or maybe a rotating weight vibrating deviceas in a phone).

Like a TV sound relay - but I've only seen wired ones of those, or bluetooth. It MAY be possible to plug something in to the music player, but I don't know, and that may shut off speakers. So a microphone would be most general purpose for her.

(I realise I could program a phone to strap on her wrist, but the mike would pick up all sorts of low frequencies, and it's too big really).
Ideas?

 

A combination of FM transmitter and FM radio might be a good solution. Relatively inexpensive FM transmitters are crystal controlled as are many receivers these days.


Google search:
https://lmgtfy.com/?q=fm+transmitter

 

Use ESP8266 or ESP32 for wireless audio link.

Google "ESP8266 Audio Link" or "ESP8266 Audio Streaming". Lots of
projects.


Regards, Dana.

 

Thanks all. I decided to go cheap and simple - a wireless microphone + transmitter + receiver is less than a tenner. I'd never actually seen one so it didn't occur to me. The Rx needs an amp on its o/p; I think I could use a Butterworth filtered LM386, or TDA2003 for a phone wobbler output, though it would come out bulkier than I'd like.

 

fromthe subject it thinks you are to sell something to the submarine fleet https://www.google.com/search?client=firefox-b-d&q=acoustic+data+link+subsurface ? → http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.135.3073&rep=rep1&type=pdf ,

. . .