Genetic-algorithm-based equalization using IIR filters
AssigneeTHAT Corporation
InventorMatthew S. Barnhill
Life of this patent
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Abstract
Systems and methods utilize a modified genetic algorithm for adapting an off-the-shelf audio system, such as in a high-end television, to a given, particular room or other physical location presenting a specific or unique auditory environment with a set of acoustic properties. An audio system is adapted to a given room by determining an IIR based EQ solution via iterative techniques, including an iterative technique based upon a genetic algorithm adapted for an audio frequency response equalization application. In a variant, an audio system is adapted to a particular room, adjust the EQ across a microphone's bandwidth while preserving the factory-calibrated EQ response across the remaining bandwidth.
Claims8
A method for adapting a measured sub-band of an EQ response to a pre-calibrated EQ response of an audio equalizer (EQ) of an audio system for a particular room, the method comprising:
- a. creating an EQ target by splicing an ideal response of the measured sub-band into the pre-calibrated EQ response, thereby forming a spliced response;
- b. defining a transition region on both sides of the spliced response;
- and
- c. using a statistical technique to match a level of the spliced response with the pre-calibrated EQ response.
Dependencies are inferred from the claim text.