How to Convert MP3 to WAV Using Python

Converting audio files from MP3 to WAV format is a common task in audio processing, especially when working with applications that require uncompressed audio. Python makes this conversion simple with the right libraries. In this guide, we'll use pydub, one of the most popular and widely used Python modules for audio manipulation.

Prerequisites

Before we begin, ensure you have the following installed:

Python 3.6+ installed on your system.
The pydub library, which can be installed via pip:

pip install pydub

Note: pydub requires ffmpeg for MP3 support. Install it from FFmpeg's official website or via package managers like apt (Linux) or brew (macOS).

Step-by-Step Conversion Process

1. Import Required Modules

First, import the necessary modules from pydub:

from pydub import AudioSegment

2. Load the MP3 File

Use AudioSegment.from_mp3() to load your MP3 file:

audio = AudioSegment.from_mp3("input.mp3")

3. Export as WAV

Convert and save the file in WAV format using export():

audio.export("output.wav", format="wav")

That's it! Your MP3 file is now converted to WAV.

Complete Code Example

Here’s the full script for reference:

from pydub import AudioSegment

# Load MP3 file
audio = AudioSegment.from_mp3("input.mp3")

# Export as WAV
audio.export("output.wav", format="wav")

print("Conversion completed successfully!")

Additional Tips

Batch Processing: Use a loop to convert multiple MP3 files at once.
Bitrate Adjustment: Modify the bitrate during export for higher/lower quality.
Error Handling: Add try-except blocks to handle file errors gracefully.

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