Cepstrogram
Cepstrogram[data]
plots the array of power cepstra computed on each partition of data.
Cepstrogram[data,n]
uses partitions of length n.
Cepstrogram[data,n,d]
uses partitions with offset d.
Cepstrogram[data,n,d,wfun]
applies a smoothing window wfun to each partition.
Cepstrogram[data,n,d,wfun,m]
pads partitions with zeros to length m prior to the computation of the transform.
Details and Options
- Cepstrogram computes and plots an array of cepstra computed on partitions of data.
- The power cepstrum for each partition is computed as the squared inverse Fourier transform of the log-power spectrum.
- Use CepstrogramArray to get the numerical array of cepstra.
- The partition length n and offset d can be expressed as an integer number (interpreted as number of samples) or as time or sample quantities.
- Cepstrogram[list] uses partitions of length
and offset 
, where m is Length[list]. - In Cepstrogram[list,n,d,wfun], the smoothing window wfun can be specified using a window function that will be sampled between
and 
or a list of length n. The default window is DirichletWindow, which effectively does no smoothing. - The data can be any of the following:
-
list 1D numerical array audio an Audio or Sound object - For multichannel audio objects, the cepstrogram is computed over the sum of all channels.
- Cepstrogram accepts all Graphics options with the following additions and changes:
-
AspectRatio 1/3 ratio of height to width ClippingStyle None how to show cells whose values are clipped ColorFunction Automatic how each cell should be colored ColorFunctionScaling True whether to scale the argument to ColorFunction ColorRules Automatic rules for determining colors from values DataRange Automatic the range of 
and 
values to assume DataReversed False whether to reverse the order of rows FourierParameters {1,-1} Fourier parameters Frame Automatic whether to draw a frame around the plot MaxPlotPoints ∞ the maximum number of points to include Mesh False whether to draw a mesh MeshStyle GrayLevel[-1+GoldenRatio] the style to use for a mesh Padding Automatic padding scheme PaddingSize {0,0} amount of padding PlotLegends None legends for datasets
Examples
open allclose allScope (1)
Options (3)
AspectRatio (3)
By default, Cepstrogram uses a fixed height to width ratio for the plot:
Make the height the same as the width with AspectRatio1:
AspectRatioFull adjusts the height and width to tightly fit inside other constructs:
Applications (2)
Properties & Relations (2)
On multichannel Sound or Audio, cepstrogram is computed on the sum of the channels:
Create a cepstrogram from the CepstrogramArray:
Comparison with the Cepstrogram output:
Text
Wolfram Research (2017), Cepstrogram, Wolfram Language function, https://reference.wolfram.com/language/ref/Cepstrogram.html (updated 2017).
CMS
Wolfram Language. 2017. "Cepstrogram." Wolfram Language & System Documentation Center. Wolfram Research. Last Modified 2017. https://reference.wolfram.com/language/ref/Cepstrogram.html.
APA
Wolfram Language. (2017). Cepstrogram. Wolfram Language & System Documentation Center. Retrieved from https://reference.wolfram.com/language/ref/Cepstrogram.html