Real component of a discrete Fourier Transform (dFT) function.

Note: This item is deprecated and will be removed in a future release.

Syntax

y = DftReal(vec1, vec2)

Arguments

Name

Description

vec1

A vector of the time-domain data.

vec2 (optional)

A vector of the imaginary component of time-domain data.

Output

Name

Description

y

A vector of the real components of the dFT.  It is of same length as vec1.

Example

Given a vector data of real part of a time-domain signal, a vector of the real components of the dFT of the signal is created.

Syntax

y = DftReal(data)

Result

y is a vector of same length as data consisting of the real components of the dFT.

Comments

The DftReal function returns the real components of a discrete Fourier Transform (dFT).  The dFT is complex-valued and used to map time-domain data into the frequency domain. vec1 and vec2 are assumed to be evenly sampled.

If only one vector is passed to DftReal, the function returns a regular dFT.

If two vectors are passed to DftReal, a complex dFT is calculated. vec1 and vec2 must have the same number of elements.

See Also:

Dfreq

DftImag

DftMag

DftPhase

Fold

Idft