Posted on 17-07-2010 by microbuzzer
DB describe the loudness of sound physical
DB (decibel) dB is named after American inventor Alexander Graham Bell, and he is famous for the invention of telephone. Because Bell’s unit is too rough and not fully used to describe our feeling of the sound, so preceded by the “points”, which on behalf of one tenth. A [...]
Tags: db, decibels, meaning, sound
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Posted on 29-12-2008 by microbuzzer
frequency response refers to a constant voltage output of the audio signal is connected with the system, the speakers and buzzers with the sound pressure generated by changes in the frequency of occurrence of the increase or attenuation, phase change with the frequency of the phenomenon of sound pressure and phase associated with the frequency of the relationship between changes in frequency response is called. Also refers to the extent permitted by the amplitude of the sound system is able to playback frequency range, and in this context, changes in the volume of signals known as frequency response, also known as frequency characteristics. At rated frequency range, output voltage range of the maximum and minimum ratio to a few decibels (dB) to express its unevenness.
Frequency response in the concept of power quality is often used to describe systems or impedance measurement sensor with frequency changes…[more]
Tags: db, Frequency Response, Hz
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