NTi Audio XL2 Sound Level Meter - Manual (Page 233)

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Appendix
Parameter T3 equivalent
Time-average Clock-Impulse Maximum Level
(Taktmaximalpegel) LAFT3eq in accordance with
DIN 45645-1.
Parameter T5
Clock-Impulse Maximum Level (Taktmaximalpegel)
LAFT5 in accordance with DIN 45645-1.
Maximum sound pressure level measured with fre-
quency weighting A and time weighting F within a
time interval of 5 seconds.
Parameter T5 equivalent
Time-average Clock-Impulse Maximum Level
(Taktmaximalpegel) LAFT5eq in accordance with
DIN 45645-1.
Inverted X-Curve
In the film and recording industry an X curve is also
known as a wide-range curve, e.g., used for cinema
installations; conforms to ISO 2969.
Z-frequency weighting in accordance with IEC
61672 (= flat frequency response, no filter)
Overall sound pressure level, all sound signal com-
ponents are included; required for special applica-
tions.