2007-10-03 01:56:56 · 4 answers · asked by Anonymous in Science & Mathematics ➔ Engineering
A decibel is one tenth of a bel (B). Devised by engineers of the Bell Telephone Laboratory to quantify the reduction in audio level over a 1 mile (approximately 1.6 km) length of standard telephone cable, the bel was originally called the transmission unit or TU, but was renamed in 1923 or 1924 in honor of the Bell System's founder and telecommunications pioneer Alexander Graham Bell. In many situations, however, the bel proved inconveniently large, so the decibel has become more common.
2007-10-03 02:10:22 · answer #1 · answered by David H 2 · 1⤊ 0⤋
Alexander Graham Bell
2007-10-03 02:11:10 · answer #2 · answered by Gayathri 2 · 0⤊ 0⤋
Logarithmic scales are use full for representing widely ranging values of any variable, not limited to sound. You can use decibels to measure voltage ,current, power, sound pressure, sound power or anything else.
for pressure or voltage: 20 X log base10 E1/E2
for power: 10 X log base 10 P1/P2
2007-10-03 11:27:19 · answer #3 · answered by jimmymae2000 7 · 0⤊ 0⤋
it would depend on how loud this doorbell is, but it would siply be a measurement of how large the amplitude of the wave is... but that doesnt really explain anything... oh well... I am number one?
2016-05-19 22:03:45 · answer #4 · answered by Anonymous · 0⤊ 0⤋