As part of a study in auditory perception, a group of students was made to listen to a low-volume music track. When they first put on their headphones, they almost couldn’t hear anything. But as they became more attentive, the sound gradually became clearer. This is an example of .

a. retinal disparity
b. pitch increase
c. sensitization
d. subliminal stimulation

b. pitch increase

Explanation:

Sound is generally characterised by pitch, loudness and quality which in turn determines the auditory ability of an individual. The gradual process through which a student listening to a low-volume music hear the sound after becoming attentive is known as pitch increase.

Pitch, which is the response of the ear to frequency of the sound is directly related to the auditory perception of an individual. An increase in the pitch of a sound leads to a clearer sound being heard by an individual listening to a low-volume music after a given period of time.

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