Signal Processing Toolbox

Technical Conventions

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

Term or Symbol
Description

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.

Term or Symbol	Description
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.

Vector Definition--Transition Scaling Values