This repo is for voice activity detection algorithm (VAD). This code is based on this paper:

Ramırez, Javier, José C. Segura, Carmen Benıtez, Angel De La Torre, and Antonio Rubio. "Efficient voice activity detection algorithms using long-term speech information."

And the Matlab code version (Thanks for the isrish making such a beautiful program):

This cpp file take input audio data from txt file and write results to 'example*.txt' file. At the end, I use gnuplot to plot the result and it works exactly the same as the Matlab Code from isrish.

Compile and run

You need FFTW and Eigen3 libraries.

$ mkdir build & cd build
$ cmake .. & make
$ ../bin/./vad

Visualizing the result

$ gnuplot
$ > set multiplot
$ > plot "sound.txt" with 1:2 lines
$ > filename(n) = sprintf("example_%d.txt", n)
$ > plot for [i=1:10] filename(i) using 1:2 with lines