change-voice.sh

#!/bin/bash

PHYSICAL_MIC="alsa_output.pci-0000_00_1f.3-platform-skl_hda_dsp_generic.HiFi__Headphones__sink"

# Check for required software: quit if any not found
for CMD in parec sox aplay; do
    if ! command -v "$CMD" &>/dev/null; then
        echo "Error: $CMD not found.."
        exit 1
    fi
done

echo -e "\nConfigurated sinks:"
pactl list sinks short

echo -e "\nConfigured sources (monitor):"
pactl list sources short

PITCH=""
OVERDRIVE=""
GAIN=""
REVERB=""
EQUALIZER=""
BASS=""
TREBLE=""
CHORUS=""
ECHO=""

echo -e "\nChoose your voice:"
echo "1) Space Marine"
echo "2) Dreadnought"
echo "3) Adeptus Mechanicus"
read -rp "Choose between [1-3]: " voice_type

case $voice_type in
    1)
        echo "You chose Space Marine...what a normie"
        PITCH="pitch -375"
        OVERDRIVE="overdrive 10"
        GAIN="gain -3"
        REVERB="reverb 10"
        EQUALIZER="equalizer 1000 1.0q +5"
        BASS="bass +4"
        TREBLE="treble -3"
        ECHO="echo 0.8 0.88 40 0.4"
        ;;
    2)
        echo "You chose Dreadnought...u gud?"
        PITCH="pitch -750"
        OVERDRIVE="overdrive 15"
        GAIN="gain -6"
        REVERB="reverb 15"
        EQUALIZER="equalizer 1000 1.0q +5"
        BASS="bass +4"
        TREBLE="treble -3"
        ECHO="echo 0.8 0.88 40 0.4"
        ;;
    3)
        echo "You chose Adeptus Mechanicus...what a nerd"
        PITCH="pitch -100"
        OVERDRIVE="overdrive 20"
        GAIN="gain -10"
        REVERB="reverb 20"
        EQUALIZER="equalizer 1200 1.4q +10 equalizer 3000 1.0q +8"
        BASS="bass -6"
        TREBLE="treble +10"
        CHORUS="chorus 0.4 0.6 20 0.2 0.3 1.0 -t"
        ECHO="echo 0.7 0.7 40 0.3"
        ;;
    *)
        echo "Choice not valid"
        exit 1
        ;;
esac

set -x
parec -d "$PHYSICAL_MIC" --raw --format=s16le --rate=44100 --channels=1 | \
    sox -t raw -r 44100 -e signed -b 16 -c 1 - -t raw - \
        $PITCH $OVERDRIVE $GAIN $REVERB $EQUALIZER $BASS $TREBLE $CHORUS $ECHO | \
            aplay --format=S16_LE --rate=44100 --channels=1