The voices were electronically distorted from female to male (high-pitch to low-pitch) with a bash script and vice versa
#!/bin/bash
today=$(date +%Y%m%d-%H%M);
output=${1:-distort}
arecord -Dpulse -f cd normal_$today.wav
rubberband -t 1.5 -p -5.5 normal_$today.wav ${output}_$today.wav
mkdir -p "normal"
mv -v normal_$today.wav normal/normal_$today.wav;
#!/bin/bash
today=$(date +%Y%m%d-%H%M)
output=${1:-distort}
arecord -Dpulse -f cd normal_$today.wav
rubberband -t 1.5 -p 3.0 normal_$today.wav ${output}_$today.wav
mkdir -p "storage"
mv -v normal_$today.wav storage/
ffmpeg -i ${output}_$today.wav -vn -ar 44100 -ac 2 -ab 192k -f mp3 ${output}_$today.mp3
mv -v ${output}_$today.wav storage/