[python] convert .mp3 file into a .wav, then visualize the sound using a matplotlib plot

mp3_to_plot.py

import matplotlib.pyplot as plt
import soundfile as sf

from pydub import AudioSegment

# we want to convert source, mp3, into dest, a .wav file
source = "./recordings/test.mp3"
dest = "./recordings/test.wav"

# conversion - check!
sound = AudioSegment.from_mp3(src)
sound.export(dest, format="wav")

# we can now load in the .wav file as a numpy-style array like so
data, samplerate = sf.read(dest)

# make a plot of the sound data. Super rewarding - tada!
plt.plot(data);