Preliminary

PUI Audio, Inc. A Projects Unlimited Company, 3541 Stop Eight Road, Dayton, OH 45414

Tel: (937) 415-5901 Fax: (937) 415-5925

System Architecture

A. Control loop for Wake-on-Sound:

Figure 3: Block diagram of example system built around the

PMM-3738-VM1010- R microphone

In the figure above, the PMM-3738-VM1010-R microphone wakes up the system when triggered

by sound. The DSP or Voice Processor can be kept in a low-power state when there is no sound to

process.