clean.sh

#!/bin/bash

# by wil92
# remove the noise of an audio

# list of needed packages
PACKAGES=("sox" "libsox-fmt-ao" "libsox-fmt-mp3" "libsox-fmt-pulse" "libsox-fmt-alsa" "libsox-fmt-base" "libsox-fmt-oss");

# install dependencies if they are not installed already
for i in "${PACKAGES[@]}"
do :
   if [ $(dpkg-query -W -f='${Status}' $i 2>/dev/null | grep -c "ok installed") -eq 0 ];
   then
     sudo apt-get install $i -y;
   fi
done

# output file name, by default is the same name of the input file
if [ -z $2 ]; then NEW_FILE=$1; else NEW_FILE=$2; fi

# Remove noise from audio file
sox $1 -n noiseprof tmp_profile
sox $1 $2 noisered tmp_profile 0.10
rm tmp_profile

normalize.sh

#!/bin/bash

# by wil92
# convert a list of audios from .ogg to .mp3 and then normalize the level of audio of those

# list of needed packages
PACKAGES=("mp3gain" "ffmpeg");

# install dependencies if they are not installed already
for i in "${PACKAGES[@]}"
do :
   if [ $(dpkg-query -W -f='${Status}' $i 2>/dev/null | grep -c "ok installed") -eq 0 ];
   then
     sudo apt-get install $i -y;
   fi
done

# convert files from ogg to mp3
for i in *.ogg; do ffmpeg -i "$i" "${i%.*}.mp3"; done

# normalize audio level in all the mp3 files
mp3gain -c -r *.mp3