Signal Processing Toolbox    

Technical Conventions

This manual and the Signal Processing Toolbox functions use the following technical notations.

Nyquist frequency
One-half the sampling frequency. Some toolbox functions normalize this value to 1.
x(1)
The first element of a data sequence or filter, corresponding to zero lag.
 or w
Analog frequency in radians per second.
or w
Digital frequency in radians per sample.
f
Digital frequency in hertz.
[x, y)
The interval from x to y, including x but not including y.
...
Ellipses in the argument list for a given syntax on a function reference page indicate all possible argument lists for that function appearing prior to the given syntax are valid.


  Installing the Signal Processing Toolbox Typographical Conventions