November 1, 2010 8:22 PM Subscribe
Where can I get a radio small enough to fit into my ear and be invisible so I can listen to information
posted by candasartan to science & nature (9 answers total) 6 users marked this as a favorite
I want a radio or something like it that can fit in my ear so I can listen to information. I have a product like this that uses an around-the-neck induction loop. The induction loop transmits to a small earpiece. Unfortunately, the earpiece is powered by two nine-volt batteries that run down pretty quickly.
Here is a list of other problems:
1. The signal is very quiet
2. I don't like the idea of a strong electromagnetic field on my body at all times
3. The induction coil can sometimes send the signal to phones (others can hear the information)
4. I don't like the tiny magnet sitting deep in my ear up against my eardrum
So what I want is something basically invisible that I don't have to fit under my clothes, doesn't look suspicious, and can transmit information to an earpiece at a reasonable volume
1. A tiny AM radio with a box that sends a very strong signal to it.
2. A tiny speaker that fits in my ear and receives signals from a small briefcase outfitted with a large power source and a large coil (I am thinking something like a large, powered amplifier connected to a speaker that has its magnet and diaphragm removed.)
3. A very small FM radio.
4. An extremely small bluetooth radio.
5. Ultrasound waves that transform from un-hearable to hearable when they hit my body.
Some of you may be wondering what I use this for. I basically use this to learn anything and everything. I listen to books all day. They are transformed from text into MP3 files using the mac automator. Then, I listen to them.
I DO listen responsibly. I don't listen at work. I also don't listen while driving or operating any heavy machinery, or doing dangerous tasks.