ex. Dbase10,100 & db attenuation.
2006-07-18 19:33:48 · 1 answers · asked by macssvt....the one and only.... 2 in Science & Mathematics ➔ Engineering
db stands for decibels. It is a logarithmic scale for measuring amplitude. For example if the volume on your stereo is at a very low level and you turn it up a little it is easily noticable however if it is already playing loudly the same difference in volume would not be noticible so the volume control is logarithmic. 1-10 is only 1/10 of the difference of 10-20. The richter scale for earth quakes is also logarithmic. decibels apply to the amplitude of a signal such as a sine wave.
3db of attenuation results in a signal strength of about 50%
The volume control on your stereo is an attenuator, the signal is presented at full volume to the volume control and the volume control reduces or attenuates it. This is a simpler method than a variable gain amplifier and results in higher fidelity.
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2006-07-18 19:46:09 · answer #1 · answered by Sleeping Troll 5 · 0⤊ 0⤋