CHAPTER 15 DSP Technology Handbook for Sound Engineers by Dr. Craig Richardson INTRODUCTION Over the past 40 years, the field of digital signal processing (DSP) has grown from its origins as a col- lection of techniques for simulating the behavior of analog systems on digital computers into one of the most widely studied and universally used tools in modern technology. The use of DSP algorithms and implementations has become the rule rather than the exception, with applications in many areas such as music, communications, radar, sonar, image processing, robotics, seismology, meteorology, and applied physics. The remarkable growth of this discipline is largely due to two factors. First, DSP is