Either an Apple Power PC 7100/100 (desk unit) or Apple Power Book 500 (portable) was used to process the range measurements and output the corresponding sounds. Although the sound produced with  the Power PC far exceeds the sound quality of the Power Book, the Power Book allows for the entire set-up to become portable.

All sounds were generated using either Apple's Sound Manager 3.1or Midi using QuickTime 3.0 - Quick Time Music Architecture (see appendix for further details). 


Earphones & Computer Built-in Speaker

The sound may be output with the PPCs built-in-speaker or with headphones.  Panasonic XBS headphones (shown above), were used and allowed for a greater quality of sound compared to the built-in-speaker especially with the frequencies above 4kHz.

Optech Lser Range Finder (LRF)

Optech Laser Range Finger (LRF) model G-150 is used to obtain the distance readings.  "The Rangefinder contains an infrared laser source emitting infrared radiation invisible to the human eye (890 nanometeres) and should not be viewed directly with the eye or with optical devices when the laser is firing ." (Model G-150 owner's manual).  Further information regarding the LRF may be found in the Appendix.