Book excerpt: This introduction to elementary signal processing connects theory and application, and bridges instruction between a book and a CD-ROM packed with video, software and more. The result is a unique, non-mathematical learning system using concepts drawn from modern brain research. Readers use the popular DasyLab metrology and control engineering program to develop applications. Processing of real signals is enabled via the sound card and the parallel port. Two hundred pre-programmed signal engineering systems and design transparencies are provided on the CD-ROM. There are numerous videos, more than 250 photos, and - most important – all "living" experiments and their results are visualized.