Hence, I would like to say that the Renaissance is not a revolutionary period. First of all, there is no drastic change in the politics in the Renaissance period. Renaissance inherited Feudalism from the Medieval Period.
This is defined as 0 dB. Sound pressure level, which is often abbreviated as SPL or Lp, in decibels (dB), can then be obtained using the following formula. You can click on the demo button to learn the formula. In the following chart, some sounds are expressed both linearly in ÂµPa and logarithmically in dB.
The catch is that there are several decibel scales. Thus, in order to be meaningful, your audiologist indicates which decibel scale she used. The two most commonly used scales are the SPL (Sound Pressure Level) and the HL (Hearing Level) scales. Sound meters are calibrated in dB SPL. This makes total sense because the condenser microphones used in sound meters are sensitive to changes in sound pressure in the air, just as our ears are. In contrast, audiometers are calibrated in dB HL, not in dB SPL like you would think would be done.