Abstract

This chapter discusses several applications where digital signal processing (DSP) can be used. The first application is on periodic signal generation using wave tables. Wave table generation techniques have become more popular with some of the new audio cards available for PCs. It is a very flexible way to generate periodic waveforms like sinusoidal waves. Wave table synthesis lies at the heart of many computer music application programs. The second application of DSP is in the area of communication systems, and its third application is in the field of speech synthesis. Speech synthesis is a very broad area that requires understanding of the characteristics of speech signals, phonetics, and at a higher level, linguistics. Image and video processing is another major application of DSP. Some photographic outlets offer instant photo enlargements and cropping, enhancement of old photographs, and other imaging services. None of these would be possible without the aid of DSP. Finally, the application of active noise control (ANC) in DSP systems can led to powerful real-time ANC systems that can be applied in air conditioning ducts, aircraft, cars and magnetic resonance imaging (MRI) systems.

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