The decibel is useful to measure very large ratios. Use of Telephone in Noisy Areas - Satisfactory, difficult and impossible noise levels for telephone use in noisy areas.Decibel (dB) is a measurement of the ratio of two values V1 and V2 given by: 10 log 10(V2/V1) or, in some cases, by 20 log 10(V2/V1) as described below. ![]()
0 Comments
Leave a Reply. |