Chapter 4 Hearing

Question 1

What are the 3 sound waves for Hearing

Answer 1

1. Amplitude - Loudness
2. Wavelength - Pitch
3. Purity - Timbre

Question 2

What are the 5 key ear structures?

Answer 2

• Pinna
• Eardrum
• Ossicles
• Cochlea
• Basilar membrane

Question 3

What is a Pinna?

Answer 3

• Which is the external ear’s sound-collecting cone

Question 4

What is the eardrum?

Answer 4

• Which is a taut membrane (at the end of the auditory canal) that vibrates in response to sound waves.

Question 5

What is are Ossicles?

Answer 5

• Which are three tiny bones in the middle of the ear that convert the eardrum’s vibrations.

Question 6

What is a Cochlea?

Answer 6

• which is the fluid-filled, coiled tunnel that houses the inner ear’s neural tissue.

Question 7

What are the Basilar Membrane?

Answer 7

• which holds the hair cells that serve as auditory receptors.

Question 8

What are the 2 pitch perception?

Answer 8

1. Place theory

2. Frequency theory

Question 9

What is place theory?

Answer 9

• perception of pitch depends on the portion of the basilar membrane vibrated.

Question 10

What is Frequency theory?

Answer 10

• perception of pitch depends on the basilar membrane’s rate of vibration.

Question 11

What was the conclusion?

Answer 11

• Evidence suggests that both theories are needed to explain pitch perception.

Question 12

What does the auditory localization consists of?

Answer 12

locating where a sound is coming from in space.

Question 13

what are two key cues of auditory localization is?

Answer 13

-differences in the intensity (loudness) and the timing of sounds arriving at each ear.