time2freq

Conversion from time-axis to frequency-axis

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Syntax

nu = time2freq(t)
nu = time2freq(t,M)

Parameters

• t - Signal vector (N-element array)
• M - Output length (scalar)

Returns

• nu - Frequency axis (M-element array)

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Description

nu = time2freq(t)

Computes the N-point frequency axis nu from the N-point input time axis t according to the Nyquist criterion.

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nu = time2freq(t,M)

The length of the output axis can be specified by the parameter M.