spectrogram.py

import math
import numpy as np
import matplotlib.pyplot as plt

data = np.loadtxt('some_wav_to_tsv.tsv')
func = np.vectorize(lambda x: math.log(max(0.001, abs(x))))
# skip column 1, row number, and column 2, max_i
plt.pcolormesh(func(data[:,2:].T))
plt.show()