User`s guide

Real Cepstrum
5-366
Inherit FFT length from input port dimensions
When selected, matches the output frame size to the input frame size.
FFT length
The number of frequency points at which to compute the FFT, which is also
the output frame size, M
o
. This parameter is available when Inherit FFT
length from input port dimensions
is not selected.
Supported
Data Types
See Also
Double-precision floating point
Complex Cepstrum DSP Blockset
DCT DSP Blockset
FFT DSP Blockset
rceps
Signal Processing Toolbox