このオーディオスペクトラムアナライザを使用すると、オーディオに存在する周波数を確認できます。
The spectrum analyzer above gives us a graph of all the frequencies that are present in a sound recording at a given time. The resulting graph is known as a spectrogram. The darker areas are those where the frequencies have very low intensities, and the orange and yellow areas represent frequencies that have high intensities in the sound. You can toggle between a linear or logarithmic frequency scale by ticking or unticking the logarithmic frequency checkbox.