# NOT RUN {
m = matrix(1:90, nrow = 10)
soundgen:::logMatrix(m, base = 2)
soundgen:::logMatrix(m, base = 10)
soundgen:::logMatrix(m = matrix(1:9, nrow = 1), base = 2)
# }
# NOT RUN {
s = spectrogram(soundgen(), 16000, output = 'original')
image(log(t(soundgen:::logMatrix(s, base = 2))))
# }
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