Table 6.

Maximum admissible Intensities (MAI): Value for Ultrasonic Noise [80].

1/3-Octave Band Frequency, f (kHz)	Lf, eq, 8 h, adm Lf, eq, wk, adm (dB)	Lf, max, adm (dB)
10, 12.5, 16	80	100
20	90	110
25	105	125
31.5, 40	110	130

L_{f, eq, 8 h, adm} is the equivalent continuous sound pressure levels in the 1/3-octave bands, normalized to a nominal 8 h daily work. L_{f, eq, wk, adm} is the equivalent continuous sound pressure levels in the 1/3-octave bands normalized to a 40 h workweek. L_{f, max, adm} is the maximum sound pressure levels in the 1/3-octave bands.