Integration of Bass Enhancement and Active Noise Control System in Automobile Cabin
نویسندگان
چکیده
منابع مشابه
Active Noise Control in an Aircraft Cabin
In propeller driven aircraft the main source for internal noise are almost tonal disturbances caused by the propeller blades that are passing the fuselage. In a certain four propeller military transport aircraft the maximum sound level in the cabin can reach up to 110 dB(A), not taking into account any noise control treatments. Inside the semi closed loadmaster working station (LMWS) the sound ...
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The noise levels in the passenger cabin of turbopropeller-driven aircraft are typically higher than the noise levels in comparable turbofan-powered aircraft. The sources of noise in a turboprop aircraft include boundary layer flow noise, structure-borne noise due to engine vibration, and acoustic excitation of the fuselage due to the propeller, with the latter being dominant for most turboprop ...
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High comfort for the driver in working vehicles is an important feature as well as a demand from the drivers. Low noise level is an essential factor for the manufacturer to maintain a high standard and comfort of vehicles. In many cases the noise inside the cabin can be related to the engine orders. Hydraulic pumps and fans are also related to the engine but not necessarily integers of the engi...
متن کاملOptimization of the Active Control of Turboprop Cabin Noise
In this paper, a modified cost function is proposed in order to achieve themaximumnoise attenuation using a set of secondary sources for a harmonically excited sound field. The modified cost function drives the error signal to the optimally attenuated sound field instead of minimizing the squared pressure. Moreover, changing the value to which the error signals must be driven allows change of t...
متن کاملThe Active Noise Control of a Light Aircraft Cabin
The effects of aircraft noise, with respect to both passenger comfort and occupational health, have long since been realised, with many examples of sound control now implemented in commercial aircraft. However, the single engined four seater aircraft cabin is still an extremely noisy environment, which has apparently been ignored to date, especially with respect to low frequency sound reduction...
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ژورنال
عنوان ژورنال: Advances in Acoustics and Vibration
سال: 2008
ISSN: 1687-6261,1687-627X
DOI: 10.1155/2008/869130