Sheriff Jack W. Brandes. To serve and protect the citizens of Austin County and the great State of Texas and to preserve and protect the. Constitution of the United States of America, especially the Second Amendment, the Right to Bear Arms..
Integrating Sound Level Meter. In atmospheric sounding and noise pollution, ambient noise level (sometimes called background noise level, reference sound level, or room noise level) is the background sound pressure level at a given location, normally specified as a reference level to study a new intrusive sound source.
exists and is an alternate of . 20,000 Hz (20kHz) is the (ideal) highest FREQUENCY that a healthy human ear can hear. With regard to loud sounds, a sound LEVEL of 120 decibel (dB) causes pain, and a level of 140 dB causes deafness.