Answer :
To compare the two audio frequencies, you can use a spectrogram or a spectrum analyzer that graphs sound wave frequencies.
The spectrogram will show a graphical representation of the sound waves over time. On the spectrogram, you'll see that the two frequencies have different wavelengths and different pitches. The lower frequency A note will have a longer wavelength than the higher frequency A note octave.
A waveform generator is an electronic device capable of generating a wide range of periodic waveforms. The waveform generator used in laboratories and electronic testing equipment is often a function generator capable of producing sine, square, triangle, and sawtooth waveforms.
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