pangaea makes use of a microprocessor controlled acoustic device for delivering short audio bursts stored in memory to an audio amplifier, when triggered by external sensors.  This device is compact and requires no external desktop computer support.  From 1MB of EPROM (erasable programmable read only memory), approximately 20 seconds of high quality 16-bit audio is generated.  A digital signal processor board (ADDS-2181-EZLITE: www.analog.com) receives triggers from multiple analog sensors.  Op-amps prepare each of the sensor signals for their corresponding microprocessor inputs; each trigger enables an audio burst stored in EPROM to flow through the digital signal processor with an audio standard sampling rate of 48 kHz.  The output of the signal processor then enters a 20W stereo amplifier (LM1875T-ND: www.digikey.com).  Martin Peach, electronic technician for Concordia Studio Arts, has provided programming and circuit details, and Guy Gosselin of Concordia Electrical and Computer Engineering has provided equipment and technical support for the preparation of the EPROM for this audio signal processor.