ABSTRACT
This chapter focuses on the capability of audio editing software to process signals and looks at other commonly used electronic audio processors. Signal processing, or audio processing, is nothing more than the process of altering the sound of audio—such as an announcer’s voice or compact discs. Several signal-processing devices will refer to the terms “wet” and “dry.” The incoming, or unprocessed, audio signal is considered a dry signal, and the outgoing audio signal that has been processed is considered a wet signal. Signal processing usually involves manipulation of the frequency response, stereo imaging, or dynamic range of the sound signal. Signal-processing devices known as noise-reduction systems have been devised to help prevent noise. The original signal is fed into the unit and electronically processed to achieve the reverb effect; the altered signal is sent out of the unit. An expander is essentially the opposite of a compressor and is used to expand the dynamic range of an audio signal.
