Normalized frequency (signal processing)
Frequency divided by a characteristic frequency / From Wikipedia, the free encyclopedia
In digital signal processing (DSP), a normalized frequency is a ratio of a variable frequency () and a constant frequency associated with a system (such as a sampling rate, ). Some software applications require normalized inputs and produce normalized outputs, which can be re-scaled to physical units when necessary. Mathematical derivations are usually done in normalized units, relevant to a wide range of applications.