python-scipyHow can I use Python and SciPy to process audio data?

Python and SciPy can be used to process audio data in a variety of ways. For example, the SciPy library provides functions for reading audio files, manipulating audio data, and writing audio data to files. Additionally, Python has a large number of libraries for audio processing such as LibROSA and PyAudio.

To illustrate this, the following example code reads an audio file using SciPy, displays the audio data in the form of a spectrogram, and then writes the audio data to a new file:

from scipy.io import wavfile
import matplotlib.pyplot as plt

# Read audio file
fs, data = wavfile.read('audio_file.wav')

# Display spectrogram
plt.specgram(data, Fs=fs)
plt.show()

# Write audio file
wavfile.write('output_file.wav', fs, data)

Code explanation

1. from scipy.io import wavfile: Imports the wavfile module from the scipy.io library.
2. import matplotlib.pyplot as plt: Imports the pyplot module from the matplotlib library.
3. fs, data = wavfile.read('audio_file.wav'): Reads the audio file audio_file.wav and stores the sample rate (fs) and audio data (data) in the variables fs and data.
4. plt.specgram(data, Fs=fs): Displays the audio data in the form of a spectrogram.
5. plt.show(): Displays the spectrogram.
6. wavfile.write('output_file.wav', fs, data): Writes the audio data to a new file called output_file.wav.

Helpful links

• SciPy Documentation
• LibROSA Documentation
• PyAudio Documentation

Edit this code on GitHub