Audiogram of the domestic goat (Capra hircus)
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Data from: Heffner, R.S., and Heffner, H.E. (1990) Hearing in domestic pig (Sus scrofa) and goat (Capra hircus). Hearing Research, 48, 231-240.
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Absolute thresholds (in dB re 20 µN/m2) for two goats
(designated A and B)
|
Ìý Frequency (in kHz) |
Individual Thresholds (in dB) |
Ìý Average |
|
|
A |
B |
||
|
.063 |
65 |
65 |
65 |
|
.125 |
52 |
46 |
49 |
|
.250 |
24 |
22 |
23 |
|
.500 |
14 |
9 |
11.5 |
|
1 |
-1 |
-2 |
-1.5 |
|
2 |
-7 |
-14 |
-10.5 |
|
4 |
-6 |
-11 |
-8.5 |
|
8 |
2 |
-2 |
0 |
|
16 |
7 |
10 |
8.5 |
|
32 |
40 |
45 |
42.5 |
|
42 |
83 |
— |
— |
|
45 |
>88 |
76 |
~83 |
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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 |
.052 |
40 |
|
60 |
.078 |
37 |
|
50 |
.120 |
34 |
|
40 |
.160 |
30 |
|
30 |
.205 |
24.5 |
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Additional Parameters:
Body weight = 35 kg
Functional interaural distance= 680 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 original data.