fourier analysis

Question 1

what is a time domain

Answer 1

temporal signal structure (how frequency and amplitude change over time)

Question 2

what is the purpose of the basilar membrane

Answer 2

separating low and high frequencies

Question 3

what is the fourier analysis

Answer 3

mathematical way to separate out frequencies

Question 4

what is the basic principle of fourier analysis

Answer 4

any sound can be represented as the sum of sine waves of different frequencies, relative amplitude, and phase displacements

Question 5

do high frequencies send out a strong signal

Answer 5

high frequencies will vibrate but not as much and will not send out a strong neural signal

Question 6

do low frequencies send out a strong signal

Answer 6

yes they will

Question 7

what is a spectrum of a signal

Answer 7

a graphical representation of the frequencies in the signal and the relative amplitudes (amplitude is strength of signal)

Question 8

what is a basic rule of fourier analysis

Answer 8

the more a signal deviates from a single frequency sine wave, the more sine wave components must be added together to recreate the signal

Question 9

what is the nyquist sampling rate rule

Answer 9

under ideal conditions, sampling at exactly twice the highest frequency will allow us to exactly reproduce the original waveform