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.
are sometimes expressed in NC (Noise Criterion) ratings. Concert halls and recording studios aim for ambient noise level ratings of NC-15 to NC-20; NC-15 is considered the lowest level that is feasible to achieve outside the laboratory. I hope this gets you started in the right direction!