Table 3. Parameters of the ingressive and egressive phases of the purr vocalization.
Parameters | Ingressive phase | Egressive phase | ||
---|---|---|---|---|
Mean relative sound pressure level (dB) | 70.66–72.4 | - | 71.72–76.43 | - |
Mean duration of the phases (ms) | 251–819 | 573 ± 72 | 484–756 | 576 ± 90 |
Max duration (ms) (sd) | - | 740 | - | 700 |
Min duration (ms) (sd) | - | 450 | - | 360 |
Mean No. of cycles per phase | 13.41–21.28 | 13.19 ± 1.64 | 12.46–20.15 | 12.43 ± 1.21 |
Max No. of cycles per phase | - | 15 | - | 15 |
Min No. of cycles per phase | - | 10 | - | 10 |
MeanF0 (Hz) | 23.00–26.09 | 23.24 ± 3.58 | 20.94–27.21 | 21.98 ± 3.36 |
MaxF0 (Hz) | - | 28.8 | - | 30.5 |
MinF0 (Hz) | - | 18.2 | - | 17.1 |
No. of cats | 4 | 1 | 4 | 1 |
Reference | [27] | [16] | [27] | [16] |
Data are shown as mean ± standard deviation or median (interquartile range).