CepstrogramArray

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`CepstrogramArray`

Updated in 14.1

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CepstrogramArray[data]

computes an array of cepstra on data.

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CepstrogramArray[data,n]

uses partitions of length n.

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CepstrogramArray[data,n,d]

uses partitions with offset d.

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CepstrogramArray[data,n,d,wfun]

applies a smoothing window wfun to each partition.

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CepstrogramArray[data,n,d,wfun,m]

pads partitions with zeros to length m prior to the computation of the transform.

Details and Options

Cepstrogram is an array of power cepstra computed on partitions of data.
Power cepstrum for each partition is computed as the squared inverse Fourier transform of the log-power spectrum.
Use Cepstrogram to directly plot the 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.
CepstrogramArray[list] uses partitions of length and offset , where m is Length[list].
In CepstrogramArray[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

video a Video object
For multichannel audio objects, the cepstrogram is computed over the sum of all channels.
The following options can be given:
FourierParameters {1,-1} Fourier parameters

Padding Automatic padding scheme

PaddingSize {0,0} amount of padding

Examples

open allclose all

Basic Examples (1)Summary of the most common use cases

Cepstrogram array of an audio signal:

In[1]:=1

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https://wolfram.com/xid/01lepfwjgersgfn52-0laq4h

In[2]:=2

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https://wolfram.com/xid/01lepfwjgersgfn52-lv663t

Plot the cepstrogram:

In[3]:=3

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https://wolfram.com/xid/01lepfwjgersgfn52-1gmd6j

Out[3]=3

Scope (7)Survey of the scope of standard use cases

Numeric input:

In[1]:=1

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https://wolfram.com/xid/01lepfwjgersgfn52-osfedt

In[2]:=2

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https://wolfram.com/xid/01lepfwjgersgfn52-6a4rqo

Out[2]=2

In[3]:=3

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https://wolfram.com/xid/01lepfwjgersgfn52-pr5qpw

Out[3]=3

Specify the window size:

In[1]:=1

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https://wolfram.com/xid/01lepfwjgersgfn52-15205j

In[2]:=2

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https://wolfram.com/xid/01lepfwjgersgfn52-ic77r0

Out[2]=2

Specify the window size and offset:

In[1]:=1

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https://wolfram.com/xid/01lepfwjgersgfn52-77b1d2

In[2]:=2

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https://wolfram.com/xid/01lepfwjgersgfn52-bv7ii1

Out[2]=2

Specify a smoothing window:

In[1]:=1

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https://wolfram.com/xid/01lepfwjgersgfn52-2ia0yi

In[2]:=2

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https://wolfram.com/xid/01lepfwjgersgfn52-5wkovp

Out[2]=2

Single-channel audio:

In[1]:=1

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https://wolfram.com/xid/01lepfwjgersgfn52-ytb605

In[2]:=2

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https://wolfram.com/xid/01lepfwjgersgfn52-9jmzx2

Out[2]=2

Multichannel audio:

In[1]:=1

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https://wolfram.com/xid/01lepfwjgersgfn52-764b21

In[2]:=2

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https://wolfram.com/xid/01lepfwjgersgfn52-m6c9py

Out[2]=2

Process the audio track of a video:

In[1]:=1

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https://wolfram.com/xid/01lepfwjgersgfn52-vbf2cb

Out[1]=1

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