signal shape( ,signal datatypeint signal duration seconds characterizing the audio signaltransforming to frequency domain characterizing an audio signal involves converting the time domain signal into frequency domainand understanding its frequency componentsby this is an important step because it gives lot of information about the signal you can use mathematical tool like fourier transform to perform this transformation example the following example showsstep-by-stephow to characterize the signalusing pythonwhich is stored in file note that here we are using fourier transform mathematical tool to convert it into frequency domain import the necessary packagesas shown hereimport numpy as np import matplotlib pyplot as plt from scipy io import wavfile nowread the stored audio file it will return two valuesthe sampling frequency and the the audio signal provide the path of the audio file where it is stored as shown in the command herefrequency_samplingaudio_signal wavfile read("/users/admin/sample wav"