Weighting networks of sound level meter

1. What is weighting networks of sound level meter?
2. What is weighting in sound measurement?
3. What is A-weighting used for?
4. What is B weighted sound level?

What is weighting networks of sound level meter?

Historically, the A, B, and C weighting networks were derived as the inverse of the 40, 70 and 100 dB EQUAL LOUDNESS CONTOURS, respectively, of Fletcher and Munson (1933). That is, the A network was to be used to measure low level sounds, the B for medium level and the C for high level.

What is weighting in sound measurement?

Frequency weightings are used when describing sound levels. For example, maximum noise levels at work, as recommended by the World Health Organization (WHO), are LAeq = 85 dB and LCpeak = 135 dB. The letters A and C indicate which frequency weighting filter should be applied to the measured sound.

What is A-weighting used for?

A-weighting is an adjustment applied to sound measurement to reflect how a noise is perceived by the human ear. This weighting depends on the frequency and can be applied throughout the audible spectrum to quantify the natural human hearing response.

What is B weighted sound level?

The B weighting is used for intermediate levels and is similar to A, except for the fact that low frequency attenuation is a lot less extreme, though still significant (-10 dB a 60 Hz). Recent studies show this is the best weighting to use for musical listening purposes.