Embedded Systems Design, 2nd Edition

Design examples 387

potential problem source such as a specific software module or

hardware allows a more constructive use and a speedier reso-

lution. The adoption of a methodical design approach and the

use of ready built boards as test vehicles may, at best, remove

the need for emulation and, at worst, reduce the amount of time

debugging the system.

Digital echo unit

This design example follows the construction of a digital

echo unit to provide echo and reverb effects.

With sound samples digitally recorded, it is possible to

use digital signal processing techniques to create far better and

more flexible effects units (or sound processors, as they are ...