equivalent sound level
LAeq means the equivalent sound level, in dB(A), of a steady sound which, over a specified period and at a specified position, would deliver the same noise energy as the intermittent or time-varying sound which actually occurs; Sample 1. Sample 2.
What IEC 61672?
The IEC 61672-1 specifies “three kinds of sound measuring instruments”. They are the “conventional” sound level meter, the integrating-averaging sound level meter, and the integrating sound level meter.
What is LCPeak in noise?
The LCpeak is used for occupational noise measurement where loud bangs are present. The Peak is not usually used for environmental noise measurement and is useless when any wind is present. A gust of wind will easily give very high LCPeak readings.
What is a Type 2 sound level meter?
Class 2 sound level meter is a ‘general grade’ meter. It is ideal for use in Noise at Work assessments, basic environmental measurements, entertainment noise, industrial hygiene, construction noise, and vehicle noise.
What is LAeq noise level?
LAeq : A-weighted, equivalent continuous sound level. LAeq,T : A-weighted equivalent continuous sound level, T denotes the time period over which the fluctuating sound levels were averaged, for example LAeq,8h is the equivalent continuous noise level over an 8 hour period.
What is a weighted sound pressure level?
‘A’ Weighted is the most commonly used and covers the full frequency range of 20Hz all the way up to high frequency 20 kHz. The ‘A’ weighting adjusts the sound pressure level readings to reflect the sensitivity of the human ear and is therefore mandated all over the world for hearing damage risk measurements.
What is a Class 1 sound level meter?
A Class 1 Sound Level Meter is a noise measurement instrument that meets the requirements of IEC 61672-1:2002 (or an equivalent such as BS EN 61672-1:2003) to Class 1 performance. Tolerances & Accuracy. This standard specifies two levels of performance, Class 1 and Class 2, with Class 1 being effectively more accurate.
What does LC peak mean?
LC,peak . (peak noise level) means C-weighted peak sound pressure level in decibels measured by a sound level meter with a peak detector-indicator characteristic complying with Australian Standard AS 1259.12.
What is a Class 1 sound meter?
A Class 1 Sound Level Meter is a noise measurement device that meets the international standards of IEC 61672-1:2002 (or an equivalent such as BS EN 61672-1:2003). Class 1 able to measure a wider sound frequency range and meet narrower tolerances which result in a more accurate response.
Is LAeq an average?
Leq, LAeq, LAeq,t – Average Sound Level Usually measured A-weighted but there is no time constant applied. As the Leq (defined as the Equivalent Continuous Sound Level) is an average, it will settled to a steady value, making it much easier to read accurately than with a simple instantaneous Sound Level.
