Frequency | x-axis a | y-axis a | z-axis a | Mag a | PAL |
---|
(Hz) | (μm/s2) | (μm/s2) | (μm/s2) | (μm/s2) | (dB re 1 μm/s2) |
---|
50 | 128 | 118 | 358 | 398 | 51.99 |
150 | 124 | 116 | 293 | 338 | 50.58 |
300 | 121 | 105 | 372 | 405 | 52.15 |
600 | 121 | 113 | 471 | 498 | 53.94 |
900 | 145 | 137 | 462 | 503 | 54.03 |
- Data show that most of the acoustic energy was along the z-axis, which is equivalent to the direct path (straight line from the transducer to the fish in the test tube). The x-axis is the rostrocaudal axis, and the y-axis is the lateral axis. a, particle acceleration; Mag a, magnitude acceleration of the three directions combined (e.g. [24, 25]). The magnitude was calculated using the following equation: . The accelerations were then log transformed to convert to particle acceleration levels (dB re 1 μm/s2).