Change the volume of a wav file in python

Question

I have a 2 seconds 16bit single channel 8khz wav file and I need to change its volume.

It should be quite straightforward, because changing the volume is the same as

Answer 1

The code which makes sound louder plus filter low and high frequencies

from pydub import AudioSegment

audio_file = "first.mp3"

song = AudioSegment.from_mp3(audio_file)

new = song.low_pass_filter(1000)

new1 = new.high_pass_filter(1000)

# increae volume by 6 dB
song_6_db_quieter = new1 + 6

# save the output
song_6_db_quieter.export("C://Users//User//Desktop//second.mp3", "mp3")