The word "dba" is a correct and usable word in written English.
It is an abbreviation for "doing business as", which is used in business to identify a trade name. For example, if the business name is "John's Collection" the owners could note it on business papers as "John's Collection dba John's Clothing".
For example, the results of a set of repeated sound-level measurements may be reported as L90 = 75 dBA, meaning that the levels were equal to or higher than 75 dBA for 90 percent of the time.
Hearing loss does not usually occur at SPLs below 80 dBA (eight-hour exposure levels are best kept below 85 dBA), but most people repeatedly exposed to more than 105 dBA will have permanent hearing loss to some extent.
Another system, the C-weighted (dBC) scale, is sometimes used for impact noise levels, such as gunfire, and tends to be more accurate than dBA for the perceived loudness of sounds with low frequency components.
SPL measurements made with this filter are expressed as A-weighted decibels, or dBA.
He is seeking more than $1million in punitive damages for "fraud, gross negligence, negligent misrepresentation, defamation, invasion of privacy and deceptive trade" from defendant Charlie Thomas Ford Ltd. dba AutoNation Ford Gulf Freeway.
Mr. Hoffman is a partner in dbA, a design and construction firm, and his main wish was for a place with an aesthetically pleasing layout.
A unit called day-night sound level (DNL or Ldn) accounts for the fact that people are more sensitive to noise during the night, so a 10-dBA penalty is added to SPL values that are measured between 10 pm and 7 am.
The event confusingly doubled a benefit for Riverkeeper, a sort of neighborhood watch for waterways, and the walls were adorned with soon-to-be-sold notebooks filled with DBA-pen scribbles by an assortment of Big Names.
"Many of the DBAs that are offered have got bad name in the market because the universities are not known for research.
" Some DBAs, he goes on, which originated in Australia but spread to Britain, have recently closed because graduation rates were so low.
"Dbas" stands for "definitely bullied at school", and it's a term I've recently heard them apply to Ed Miliband.
