Transcription of INTRODUCTION TO DIGITAL SIGNAL PROCESSING
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INTRODUCTION TO DIGITAL SIGNAL PROCESSING
INTRODUCTION TO DIGITAL SIGNAL PROCESSING by Dr. James Hahn Adjunct Professor Washington University St. Louis 1/27/11 12:02 PM 2 INTRODUCTION Purpose/objective of the course: To provide sufficient background on DIGITAL SIGNAL PROCESSING (DSP) concepts so students can understand and use commercial software for DSP and use DSP for research projects. Detailed manual design procedures will be covered only to the extent necessary to use the available software. DIGITAL SIGNAL PROCESSING What do we mean by DIGITAL SIGNAL PROCESSING ? DIGITAL - means discrete in nature the SIGNAL levels are chosen from a finite set of levels, as opposed to continuous or analog signals, which can have an infinite number of levels. In practice, DIGITAL nearly always means binary, that is, two-level signals our standard TTL or CMOS levels as used in computers and other DIGITAL systems.
To carry out any digital signal processing, most real-world signals, which are predominately analog, must be converted to digital form. Although the process is conceptually straightforward – just feed the analog signal to an analog-to-digital converter – there are a number of issues connected with that process that must be considered.
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