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pragatibaheti/pre-emphasis.py

Created April 26, 2020 12:27
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pre-emphasis.py
import matplotlib.pyplot as plt
y, sr = librosa.load(audio_file.wav, offset=30, duration=10)
y_filt = librosa.effects.preemphasis(y)
# and plot the results for comparison
S_orig = librosa.amplitude_to_db(np.abs(librosa.stft(y)), ref=np.max)
S_preemph = librosa.amplitude_to_db(np.abs(librosa.stft(y_filt)), ref=np.max)
librosa.display.specshow(S_orig, y_axis='log', x_axis='time')
plt.title('Original signal')
librosa.display.specshow(S_preemph, y_axis='log', x_axis='time')
plt.title('Pre-emphasized signal')
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