Abstract: Systems and methods for enhanced vehicle audio seat vibration with individual passenger controls. An example system includes a controller configured to obtain an input audio signal. The controller filters the input audio signal via one or more filters, with the one or more filters including a low-pass filter. The controller is in communication with a multitude of intensity controllers usable by respective persons within a vehicle, with the intensity controllers specifying respective intensities. The controller configures an amplifier based on the respective intensities, and the amplifier causes output from seat exciters configured for mounting on seats of the persons.

Abstract: An automotive audio controller is provided for receiving an audio signal from an audio source and providing a filtered audio signal that may help compensate for ambient noise in the automobile. The audio controller may have a vibration sensor that generates a vibration signal indicative of vibrations in the automobile. A dynamic filter of the audio controller may receive the vibration signal and the audio signal, and change the gain level and/or tone of the audio signal based on the vibration signal to generate the filtered audio signal. The audio controller also may receive a speed signal, and change the gain level and/or tone of the audio signal based on the speed signal to generate the filtered audio signal.

Abstract: An apparatus and method for measuring the electrical load on a motor driven tool operating in a cycle having idle and cutting or machining states. The electrical power is continuously measured and an average power value is established during the idle state of at least one cycle and used as an offset subtracted from the measured electrical power values to generate an output proportional to the incremental power drawn by the cutting tool during the cutting state. The offset value is recalculated at the start of each new cycle and/or just prior to the commencement of a cutting operation by a tool. At least one filter and/or an amplifier are used to improve the signal-to-noise ratio of the output signal.