Digital Frequency - Normalized Ranges

Normalized Ranges

The normalized hertz range is the hertz range divided by the sampling frequency. A valid signal is on cycles per sample.

Instead, the normalizing frequency could be the nyquist frequency, which puts a valid signal on cycles per sample.

For radians, normalized frequencies are in the range, equivalent to half a cycle per sample.

Clearly a frequency of just "0.1" is insufficient to describe the true frequency of the discrete signal. To remove the ambiguity, it is necessary to specify the range and what normalization frequency was used (if applicable).