PSpice for Digital Signal Processing is the last in a series of five books using Cadence Orcad
PSpice version 10.5 and introduces a very novel approach to learning digital signal processing
(DSP). DSP is traditionally taught using Matlab Simulink software but has some inherent
weaknesses for students particularly at the introductory level. The 'plug in variables and
play' nature of these software packages can lure the student into thinking they possess an
understanding they don't actually have because these systems produce results quicklywithout
revealing what is going on. However it must be said that for advanced level work Matlab
Simulink really excel. In this book we start by examining basic signals starting with sampled
signals and dealing with the concept of digital frequency. The delay part which is the heart
of DSP is explained and applied initially to simple FIR and IIR filters. We examine linear
time invariant systems starting with the difference equation and applying thez-transform to
produce a range of filter type i.e. low-pass high-pass and bandpass. The important concept of
convolution is examined and here we demonstrate the usefulness of the 'log' command in Probe
for giving the correct display to demonstrate the 'flip n slip' method. Digital oscillators
including quadrature carrier generation are then examined. Several filter design methods are
considered and include the bilinear transform impulse invariant and window techniques.
Included also is a treatment of the raised-cosine family of filters. A range of DSP
applications are then considered and include the Hilbert transform single sideband modulator
using the Hilbert transform and quad oscillators integrators and differentiators. Decimation
and interpolation are simulated to demonstrate the usefulness of the multi-sampling
environment. Decimation is also applied in a treatment on digital receivers. Lastly we look at
some musical applications for DSP such as reverberation echo using real-world signals imported
into PSpice using the program Wav2Ascii. The zero-forcing equalizer is dealt with in a
simplistic manner and illustrates the effectiveness of equalizing signals in a receiver after
transmission.
