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US 6,661,900 B1Granted
Digital graphic equalizer control system and method
AssigneeTexas Instruments Incorporated
InventorsRustin W. Allred, Hanna E. Witzgall, Stephen R. Handley
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Abstract
A digital graphic equalizer uses a predetermined number of equalizing bands each having a different center frequency, and the center frequencies span a predetermined audio bandwidth. For each equalizing band a minimum set of filters is provided. The filters have a predetermined linear uniform spacing between the gain of successive filters.
Claims23
A digital graphic equalizer system, comprising:
- a predetermined number of equalizing bands each having a different center frequency, the center frequencies spanning a predetermined audio bandwidth, each equalizing band comprises:
- a minimum set of filters with a predetermined linear uniform spacing between the gain of successive filters.
A method of digital graphic equalizer control, comprising:
- receiving a user-selected gain setting for a equalizing filter;
- gradually increasing or decreasing the filter gain in uniform steps on a linear scale to be as close as possible to the user-selected gain setting.
A digital audio system, comprising:
- a digital graphic equalizer having a predetermined number of equalizing bands each having a different center frequency, the center frequencies spanning a predetermined audio bandwidth, each equalizing band includes a minimum set of filters with a predetermined uniform linear spacing between the gain of successive filters.
Dependencies are inferred from the claim text.