sound sensing and arduino
- Sparkfun: Option 1 and Option 2; use with arduino FFT library for best results or detection code like this
- Phidget
- ZX-sound
- interesting board for this purpose
see this post:
Heart-rate Sensors and Stethoscopes:
Toys/Game Controllers:
Finger Print Scanner:
Eye/Retina Scanners:
Sensor vendors
External References