Audiogram of the domestic sheep (Ovis aries)
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Data from: Wollack, C.H. (1963) The auditory acuity of the sheep (Ovis aries). Journal of Auditory Research, 3, 121-132.
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Absolute thresholds (in dB re 20 µN/m2) for two domestic sheep
(designated A and B)
|
Ìý Frequency (in kHz) |
Individual Thresholds (in dB) |
Ìý Average |
|
|
A |
B |
||
|
.100 |
62 |
63 |
62.5 |
|
.200 |
57 |
56 |
56.5 |
|
.300 |
32 |
40 |
36 |
|
.700 |
22 |
24 |
23 |
|
1 |
23 |
27 |
25 |
|
3 |
11 |
17 |
14 |
|
5 |
14 |
26 |
20 |
|
7 |
-1 |
19 |
9 |
|
10 |
-4 |
-7 |
-5.5 |
|
20 |
2 |
8 |
5 |
|
30 |
4 |
20 |
12 |
|
40 |
42 |
48 |
45 |
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Lowest and highest frequencies audible at sound
pressure levels (SPL) ranging from 30 to 70 dB SPL
|
SPL (in dB) |
Lowest audible frequency (in kHz) |
Highest audible frequency (in kHz) |
|
70 |
— |
— |
|
60 |
.125 |
45* |
|
50 |
.225 |
42 |
|
40 |
.275 |
38 |
|
30 |
.440 |
35 |
*Extrapolated value
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Additional Parameters:
Body weight = 33 kg
Functional interaural distance= 670 µs
(Time required for sound to travel around the head from one auditory meatus to the other.)
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Comments: Threshold values taken from Wollack, 1963.