satvik-dixit / cpp

Python implementation of Cepstral Peak Prominence (CPP)

CPP

Python implementation of Cepstral Peak Prominence (CPP)

Demo

• cpp_demo.ipynb is the demo for using the python implementation of CPP
• cpp_single_window.ipynb is the demo for using the python implementation for CPP (using only a single window)

Function

• cpp.py is the function for getting CPP

Matlab implementation

cpp_matlab_implementation folder contains the matlab implementation of CPP. It contains:

• cpp_function.m contains matlab implementation of CPP (taken from https://github.com/covarep/covarep/blob/master/glottalsource/cpp.m)
• cpp_plot.m contains matlab code for getting single window CPP and making plots

Demos for using other methods to get cepstrum

• cpp_vfp_demo.ipynb is the demo for single window CPP using a different method to get cepstrum and comparing results with praat
• cepstrum_methods.ipynb demonstrates different ways of getting cepstrums (and therefore CPPs)

Other folders

• audio_files folder contains all the audio files used in the demos
• images folder contains the plots from matlab and praat for all the audio files
• files folder contains CPP_example_values.csv which has the matlab implementation cpp values for all the audio files

References

1. Fraile, R., & Godino-Llorente, J. I. (2014). Cepstral peak prominence: A comprehensive analysis. Biomedical Signal Processing and Control, 14, 42-54.
2. Murton, O., Hillman, R., & Mehta, D. (2020). Cepstral peak prominence values for clinical voice evaluation. American Journal of Speech-Language Pathology, 29(3), 1596-1607.
3. https://github.com/covarep/covarep/blob/master/glottalsource/cpp.m

cpp's Issues

Reviewing first pass at CPP in python

@satra , @satvik-dixit started from the implementation of the cepstrum I had for the UVP paper and computed the CPP from there. He also ran it in Praat to compare and he's getting slightly different results. Perhaps you can give the code a quick look to see if we're missing something. He thinks maybe smoothing.

Here are some resources in case they're useful:

About CPP:

• Fraile, R., & Godino-Llorente, J. I. (2014). Cepstral peak prominence: A comprehensive analysis. Biomedical Signal Processing and Control, 14, 42-54.
• Murton, O., Hillman, R., & Mehta, D. (2020). Cepstral peak prominence values for clinical voice evaluation. American Journal of Speech-Language Pathology, 29(3), 1596-1607.

Code:

• implementation in matlab https://github.com/covarep/covarep/blob/master/glottalsource/cpp.m