Other

Harman International Industries, Inc.

Brandon Graham

Johnathan Ivey

Glen A Rutledge

Norm Campbell

Patrick Graham

An element of an automatic gain control system that automatically calibrates a Composite Gain vs Ambient Noise look-up table responsive to user zone gain inputs at various ambient noise levels. The table is a graph of adjacent (horizontally or diagonally) data points (nodes) mapping ambient noise to composite gain. Three algorithmic rules determine position changes of the nodes responsive to zone gain inputs. A curve may be fit to an arrangement of adjacent nodes. The curve, or the interpolated table value, is used with an ambient noise input to determine the current composite gain. The element may be used with many traditional ANC systems. Once calibrated over the full range of ambient noises in the user's space, the ANC system may never need further user zone gain inputs.

Automatic calibration of an ambient noise compensation system

An apparatus instantiating a method for computing automatic noise compensation gain with an adaptive filter that receives ambient sound and source audio, down samples ambient sound and source audio, and filters the down sampled ambient sound and source audio to compute an RMS noise estimate from which a gain is determined. The present invention features highly efficient computations, as sampling rates are significantly lower. The present invention keeps audio data secure by transmitting only the mean-square audio levels instead of the audio itself.

Root mean square adaptive filtering for ambient noise compensation systems

Embodiments of the present invention may provide a step, rock guard, handyman jack storage and even jack lift point system that can be made for most 4&#xd7;4 vehicles. One product may resolve individual problems that may become apparent once a lift kit and larger wheels are installed on a 4&#xd7;4 vehicle. Products can be made to fit two-door Jeeps, four-door Jeeps, Trucks, SUV's, or the like.

Multi-functioning attachable vehicle appendages methods and systems

A frequency-domain peak detector is configured to detect harmonic content of a digital input signal. An equalizer-based feedback synthesizer is configured to generate simulated feedback at a specified frequency by filtering existing content of the digital input signal at the specified frequency. A tone-based feedback synthesizer is configured to generate simulated feedback at the specified frequency by generating a tone at the specified frequency. Feedback selection logic is configured to determine the specified frequency at which to generate simulated feedback based on the harmonic content, and whether to utilize the equalizer-based feedback synthesizer or the tone-based feedback synthesizer to generate simulated feedback at the specified frequency.

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Sandy, UT, United States of America

Brandon Graham