Abstract: The masking-effect of loud audio passages is utilized to reduce the audibility of the fan noise from a cooling fan in an audio system. A power monitor determines an output power of an audio amplifier and generates a power signal proportional to the output power. A switchable cooling fan is positioned to provide a cooling flow of air within the audio system when the cooling fan is turned on. A fan control is coupled to the power monitor and the switchable cooling fan. The fan control compares the power signal with a predetermined threshold and turns on the switchable cooling fan in response to the comparison indicating that reproduction of the amplified audio signals is at an output power level that will substantially mask audible noise created by the switchable cooling fan.

Abstract: The masking-effect of loud audio passages is utilized to reduce the audibility of the fan noise from a cooling fan in an audio system. A power monitor determines an output power of an audio amplifier and generates a power signal proportional to the output power. A switchable cooling fan is positioned to provide a cooling flow of air within the audio system when the cooling fan is turned on. A fan control is coupled to the power monitor and the switchable cooling fan. The fan control compares the power signal with a predetermined threshold and turns on the switchable cooling fan in response to the comparison indicating that reproduction of the amplified audio signals is at an output power level that will substantially mask audible noise created by the switchable cooling fan.

Abstract: An audio storage and reproducing apparatus is provided. The apparatus selectively operates in at least three different modes: as an addressable member of a computer network, as a portable audio player, and as an in-vehicle audio player. While in a computer network, the apparatus can function as a server for audio data files. While in the other modes of operation, the apparatus can serve as a personal audio player.

Abstract: An automatic identification of the features associated with an audio system for a vehicle based on the selection of the associated bezel (14). The audio system includes a printed circuit board (34) having at least one finger pad (30) thereon in communication with a microprocessor (16). The microprocessor (16) includes programming sequences for various possible features for the audio system. The bezel (14) may have no, one or multiple programming tabs (36) in alignment with corresponding finger pads depending upon the model of bezel chosen. Contact of the finger pads due to the programming tabs will indicate to the microprocessor which programming sequence needs to be initiated to activate the appropriate features corresponding to that particular bezel installed on the audio assembly.

Abstract: An automatic identification of the features associated with an audio system for a vehicle based on the selection of the associated bezel (14). The audio system includes a printed circuit board (34) having at least one finger pad (30) thereon in communication with a microprocessor (16). The microprocessor (16) includes programming sequences for various possible features for the audio system. The bezel (14) may have no, one or multiple programming tabs (36) in alignment with corresponding finger pads depending upon the model of bezel chosen. Contact of the finger pads due to the programming tabs will indicate to the microprocessor which programming sequence needs to be initiated to activate the appropriate features corresponding to that particular bezel installed on the audio assembly.