Install the SPTK

Install the SoX

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apt-get install sox

Clone the Git Repo

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git clone https://github.com/sp-nitech/SPTK.git

Compile the C++

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cd SPTK; make

Export the Environmental Variable

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vim ~/.bashrc

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Just export the bin path to your environmental variable.

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export PATH=$PATH:/mnt/c/Users/ABC/SPTK/bin

Analysis Synthesis

Pitch Extraction

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pitch -s 16 -p 80 -L 80 -H 200 -o 1 < test.wav > data.f0

LPC

When we reviewed the lpc directory, which is under /SPTK/egs/analysis_synthesis/lpc.

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When we finally compare the output file:

data.syn.raw:

image-20220912233129993

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And compared with the original wav file, data.org.wav.

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We can found out that the sound pressure is became more linear.

Python Version SPTK

we can have a python version SPTK and it combines the same functions:

https://nbviewer.org/github/r9y9/pysptk/blob/master/examples/pysptk%20introduction.ipynb