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FREQUENCY

Returns the FFT frequencies of an array of time values. The result is given in Hz.

Format

FREQUENCY (A, N)

Arguments

 
A
An array of time values from which the frequencies will be computed. The time values should be evenly spaced.
N
An integer value which indicates the number of output values. This must be greater than or equal to the number of input values. If N is an odd number, the function returns (N+1)/2 output values. If N is an even number, (N/2 + 1) number of values will be returned.

Example

The following examples assume that the current time units setting is in seconds:
 
Function
FREQUENCY({0,1,2,3,4}, 10)
Result
0.0, 0.1, 0.2, 0.3, 0.4, 0.5
 
Function
FREQUENCY({0,1,2,3,4}, 5)
Result
0.0, 0.2, 0.4
Learn more about matrix/array functions.