This exercise plays and writes an audio file, then draws a sine wave

You can find various audio files within the following link:

Free Audio-Files Sound Effects Download - Pixabay

Step 1: Import the required libraries

import matplotlib.pyplot as plt
import librosa  # Install this with pip install librosa
import librosa.display
from pydub import AudioSegment  # Install this with pip install pydub
from pydub.playback import play
import os

Step 2: Read an audio file and then convert it from mp3 to wav

Note: We must download ffmpeg and ffprobe for pydub to work. Simply write: brew install ffmpeg and brew install ffprobe.

# Convert mp3 to wav
file_path = 'birdsinging.mp3'
audio = AudioSegment.from_mp3(file_path)
export_path = "birdsinging.wav"
audio.export(export_path, format="wav")
print("Converted mp3 to wav!!")
# Play the audio file
print("Playing the audio file...", file_path)
play(audio)

Output:

Converted mp3 to wav!!
Playing the audio file... birdsinging.mp3
Input #0, wav, from '/var/folders/gc/49grx5f90nv3f12yh4jhhf740000gn/T/tmpz2ap8nyd.wav':
  Duration: 00:00:19.64, bitrate: 1411 kb/s
  Stream #0:0: Audio: pcm_s16le ([1][0][0][0] / 0x0001), 44100 Hz, 2 channels, s16, 1411 kb/s
  19.57 M-A:  0.000 fd=   0 aq=    0KB vq=    0KB sq=    0B 

Write the audio file with librosa, then return:

• The total samples (length of y), and sr (the sample rate).
• Duration in seconds is len(y)/sr
• Get the mb size of the audio file, and mb per second
• Get the Max and Min Amplitude