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. 2012 Aug 7;7(8):e42292. doi: 10.1371/journal.pone.0042292

Table 3. Sound pressure level and particle acceleration levels in the three orthogonal Cartesian directions and for PAL of the three axes combined at each test frequency.

Frequency (kHz) SPL PAL vert PAL rc PAL lat PAL comb
0.1 100 59 55 40 61
0.2 98 58 51 46 59
0.3 101 65 58 54 66
0.5 100 64 49 41 64
0.6 100 62 48 41 62
0.7 100 61 48 44 61
0.8 98 60 47 47 60
1.0 100 62 54 54 63

SPL-sound pressure level (dB re 1 µPa), PAL-particle acceleration level (dB re 1 µm/s2) in the vertical (vert), rostrocaudal (rc), and lateral (lat) axis; PAL comb-PAL combined of the three directions (magnitude sensu Casper and Mann (2006) [22] and Wysocki et al. (2009) [x]. The PAL comb was calculated based on the particle acceleration of each axis in µm/s2 as 20*log(sqrt(x2+y2+z2)).