7.8

Question 1

Fundamental frequency

Answer 1

The lowest,
and usually most intense, frequency of a
complex sound; most often perceived as
the sound’s basic pitch.

Question 2

Overtone

Answer 2

The frequency of complex
tones that occurs at multiples of the fundamental frequency.

Question 3

Phase difference

Answer 3

The difference in arrival times of sound waves at each of the eardrums.

Question 4

Intensity difference

Answer 4

The difference in sound intensities (measured in dB) at each of the ear drums.