Steel and nickel–iron alloys are common materials for mechanical filter components; nickel is sometimes used for the input and output couplings. Resonators in the filter made from these materials need to be machined to precisely adjust their resonance frequency prior to final assembly.
While the meaning of mechanical filter in this article is one that is used in an electromechanical role, it is perfectly possible to use a mechanical design to filter mechanical vibrations or sound waves (which are also essentially mechanical in nature) directly. For example, filtering of audio frequency response in the design of loudspeaker cabinets can be achieved with mechanical components. In the electrical application, in addition to mechanical components which correspond to their electrical counterparts, transducers are needed to convert between the mechanical and electrical domains. There are a wide variety of component forms and topologies for mechanical filters, a representative selection of which are presented in this article.
James Hugh Calum Laurie, OBE (pronounced /ˈlɔːriː/; born 11 June 1959), better known as Hugh Laurie, is an English actor, voice artist, comedian, writer, musician, recording artist, and director. He first reached air conditioner repair hotel breaksfame as one half of the Fry and Laurie double act, along with his friend and comedy partner Stephen Fry, whom he joined in the cast of Blackadder and Jeeves and Wooster from 1987 until 1999. Since 2004, he has been starring as Dr. Gregory House, the protagonist of House, for which he has received two Golden Globe awards and several Emmy nominations. As of August 2010, he is the highest paid actor in a drama series on US television.[1]
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