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Project Description and Overview My proposal for this project is a car audio normalizer This device would be packaged as a microchip with various input and output pins The reasons for this device have been experienced by almost everyone with a car audio system of any type Weather you own a simple factory made car radio or an expensive custom audio setup an undesired affect occurs A desired audio volume is set on the system at some point in time The problem is that the environmental audio levels almost never stay constant Typically an open window a passing vehicle such as a semi truck or an increase in engine noise drowns the audio out When you manually adjust the audio level back to an audible one the loud noise may often disappear The truck passes or you slow your vehicle or close your window After which the volume level is undesirably high My proposed system would be activated when the radio was turned on Each time the volume is adjusted the system uses a microphone to sample the environmental audio level and calculate a ratio between the environmental audio level and the audio system volume Then using the microphone to sample the environment the system maintains this ratio by adjusting the audio system volume History The technology that precedes this device is the heritage of car audio systems Car audio rose to popularity in the 1950s when car radios we widely seen in new cars The first systems that allowed users to play their own music in a car was an eight track system This was followed by the popularity of the cassette deck in the 1980s All these systems are analog take analog media and have analog controls therefore they do not lend themselves to a digital normalizer which I am proposing Modern systems however are digital have digital volume controls and take digital media Therefore a digital normalizer could
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