| Popis: |
Nonstationary or transient sounds measured by a sound level meter will produce different values of sound level, depending on the time constant, or lack thereof, used. The technique of determining exposure, the so‐called “doubling rate” will also result in significant differences in readings. Most investigations of the effects of the different time constants and averaging rates on nonstationary signals required several sound level meters or a predefined signal that was repeated for each different measurement method so that the differences could be compared. This paper presents the results of tests using a sound level meter that can simultaneously measure with various time constants and with several “averaging” techniques allowing the operator to measure Lmax and Lmin using “fast,” “slow,” “impulse” time constants and “peak” detection using a doubling rate of 3, 4, 5, 6, and impulse, all on the same arbitrary source. |
