How to use a Bone Conductor Transducer
What is Bone Conduction?
Bone conduction is a way of transmitting sound to the inner ear through the bones of the skull instead of through the air and eardrum. In normal hearing, sound waves travel through the air, vibrate the eardrum, and are then passed to the inner ear. With bone conduction, vibrations are sent directly through the skull bones to the cochlea (the hearing organ), bypassing the eardrum entirely.
The Bone Conductor Transducer can create the vibration, and hence sounds, making everything (?!) into a speaker. It can work on several different surfaces, including Acrylic, Wood, Plastic and Glass! Hollow objects perform better than objects that are denser. The bone conductor transducer produces the best quality sound when it's pressed up against a surface.
Circuit
You will need the following components to make the circuit.
- Power Supply (For testing, you can use the 3.3V and GND from Arduino if you have one.)
- 3.5mm audio jack
- Audio Amplifier (We have MAX98306 in CTH, you can use other similar models.)
- 3.5mm Audio cable (to connect to the computers/phones)
- Bone Conductor Transducer
If you are using MAX98306, you can use the jumper to change the amplifier gain at the bottom.
