![]() These cookies ensure basic functionalities and security features of the website, anonymously. Necessary cookies are absolutely essential for the website to function properly. It is actually a logarithmic ratio whose main purpose is to scale a large measurement range down to a much smaller and more useable range. The decibel is a number that represents a ratio of two values of a quantity such as voltage. What is a dB? The decibel (dB) is an expression often used in electrical and acoustic measurements. What does the term ” DB ” mean in electrical measurements? As originally used, the bel represented the power ratio of 10 to 1 betwe en the strength or intensity i.e., power, of two sounds, and was named after Alexander Graham Bell. The ratio may be power, sound pressure, voltage or intensity or several other things.ĭECIBEL (dB) The Decibel is a subunit of a larger unit call ed the bel. The dB is a logarithmic way of describing a ratio. It is also widely used in electronics, signals and communication. The decibel (dB) is a logarithmic unit used to measure sound level. Which is the best way to describe a decibel? This is in accordance with the terminology for the decimal unit, the prefix “deci” being the usual one for indicating a one-tenth relation.3 The Bell System has adopted the name “decibel” for the “transmission unit,” based on a power ratio of 10.1. The lowercase “d” comes from the symbol for the metric prefix “deci-”. DB – Dead Body Marty and Rust refer to Dora Lange as a DB, or Dead Body, multiple times throughout the show. It is slang for when an officer makes an arrest or apprehends a suspect. ![]() Patent Office.Ĭollar – To arrest or apprehend a suspect Collar isn’t used in “True Detective,” but it is common in “Law & Order” and other police shows. When was the bel invented?īell’s patent 174,465, was issued to Bell on March 7, 1876, by the U.S. The decibel scale helps us understand which noises can damage hearing. Bell Telephone Laboratories devised this sound measurement unit and named it “bel”-in honor of the organization’s founder, Alexander Graham Bell. Why are decibels named after Alexander Graham Bell?īell’s life work was greatly influenced by his family. Watson – Come here – I want to see you”- as well as his reaction when his assistant arrived: “To my delight he came and declared that he had heard and understood what I said.” In the March 10, 1876, notebook entry, Bell recounts his utterance of the famous words-”Mr. What were the first words spoken over the telephone? ![]() Later on we relate dB to the phon and to the sone, which measures loudness. The ratio may be power, sound pressure, voltage or intensity or several other things. What does DB mean in slang?ĭB is often used as an abbreviation of the slang term “Douchebag”, which is as an insulting way to refer to a person who is obnoxious and untrustworthy or who acts like an idiot. The unit decibel is used because a one-decibel difference in loudness between two sounds is the smallest difference detectable by human hearing. The term bel is derived from the name of Alexander Graham Bell, inventor of the telephone. A decibel is a logarithmic value to the base 10. It is normally measured using the “A” scale, which approximates the human ear’s response to a wide range of frequencies. Stands for Decibels (1981) Repercussion (1981)ĭecibel: Named after the inventor Alexander Graham Bell, a decibel (dBA) is the unit used to express the intensity of sound. Stands for Decibels is the debut studio album by American power pop band the dB’s, released Januby Albion Records…. It was originally used to measure acoustic power (sound) ratios in telephony. One Bel is defined as a power ratio of ten (or ten times the power). The decibel actually comes from a logarithmic unit of measurement called a “Bel”, named after Alexander Graham Bell. 7 How are the Bel and the decibel related?.6 How did the decibel unit get its name?. ![]()
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