Lockhart G.B., Cheetham B.M.G. Basic Digital Signal Processing

Butterworth, 1989. — 188.Signal processing concerns the manipulation of electrical signals for a variety of purposes such as noise reduction or frequency analysis. Because electrical signals feature in most areas of science and technology, signal processing considerations arise in a wide range of applications. These include diverse areas in telecommunications, radar, sonar, industrial process control, sound and vibration studies, geophysics, and biomedicine. Traditionally, signal processing has been concerned with 'analogue' signals in the form of voltage or current 'waveforms' and operations such as analogue filtering date from the origins of electrical science. Digital signal processing (DSP) is a more recent advance closely connected with the advent of digital technology and the digital computer. Processing signals in a numerical form using digital hardware offers significant improvements in reliability and in ease of monitoring and control over the older analogue methods. Digital signals may be reproduced and processed with guaranteed accuracy; the problems of component stability and tolerance typical of analogue systems are also substantially removed. A particularly exciting development arising from recent advances in VLSI device technology has been the emergence of inexpensive but powerful devices or 'chips' specifically designed for digital signal processing, which can be configured and programmed in much the same way as generalpurpose microprocessors. This is making DSP more economic in an ever-increasing range of applications, not only as a replacement for existing analogue techniques, but also in new advanced signal processing systems such as speech or image processors with performance requirements beyond the capabilities of analogue technology.
This book provides a concise introduction to the principles of digital signal processing and provides the means of experimenting with commonly-used techniques through simple BASIC programs.Introduction to BASIC
Continuous and discrete time signals
Digital signal processing
Digital processing of analogue signals
Digital filter design
Fast Fourier transform methods
Analogue system theory