Bionic Ear


Posted on Nov 30, 2012

This circuit, connected to 32 Ohm impedance mini-earphones, can detect very remote sounds. Useful for theatre, cinema and lecture goers: every word will be clearly heard. You can also listen to your television set at a very low volume, avoiding to bother relatives and neighbors. Even if you have a faultless hearing, you may discover unexpected sounds using this device: a remote bird twittering will seem very close to you.


Bionic Ear
Click here to download the full size of the above Circuit.

The heart of the circuit is a constant-volume control amplifier. All the signals picked-up by the microphone are amplified at a constant level of about 1 Volt peak to peak. In this manner very low amplitude audio signals are highly amplified and high ampl




Leave Comment

characters left:

New Circuits

.

 


Popular Circuits

PIC16CS4 Programmer
Peak-program-detector
power supply Inductive choke with bypass capacitors
Power megaphone circuit
DIY 100mw TV Transmitter Printed Circuit Board (PCB)
Electromagnetic Field Probe with Meter
Simple Morning Alarm Circuit Using LDR and UM66
Salt bath resistance furnace temperature control circuit



Top