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Signal processing

Signal processing is the processing, amplification and interpretation of signals. Signals may come from various sources. There are various sorts of signal processing, depending on the nature of the signal, as in the following examples.

Digital signal processing - for signals that have been digitized. Processing is done by digital circuits, microprocessors or computers.
Analog signal processing - for signals that have not been digitized
Audio signal processing - for electrical signals representing sound
Speech signal processing - for interpreting spoken words
Video signal processing - for interpreting moving pictures

Topics in signal processing:

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This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Signal processing".