Laboratory work №1
The
determination of the audibility threshold (threshold of hearing)
Purpose of the work: To determine the audibility threshold (threshold of
hearing) for different audio frequencies.
1.1.
Audiogram
getting using audiometer (УДК) (Fig.1).
Fig.1. Audiometer
Work algorithm:
1.
Put on the headphones
(You must pay attention to marks of left “L” and right “R” ear).
2.
Set the frequency by
using handle 5.
3.
Press and hold up
button 3 for the left headphone or the button 4 for the right headphone.
4.
By using handle 6 find
the value of intensity level corresponding to sound audibility.
5.
Write the values of
frequencies and the level of intensity for the left and the right ear in Table
1.
6.
Draw the audiogram for
the left and the right ears.
7.
Make a conclusion.
