Two Tone Propagation


This animation shows two tones propagating down the cochlea. The first tone, at three times the frequency of the second tone, peaks first. Note how the peaks in the left wavelet are going up and down at a much faster rate than those on the right. This shows that different frequency tones are resolved by different parts of the cochlea.

It is important to realize that this pseudoresonance occurs at different locations for different frequencies. This animation shows the pressure due to two tones at different frequencies. The higher frequency tone, at three times the frequency of the low-frequency tone, peaks considerably earlier. With the scaling assumptions we have used, the wavelength at the response peak is independent of frequency.

Time Delay