Digital tone controls and systems using the same

Details Digital tone controls and systems using the same Digital tone controls and systems using the same

2005-05-24

2005-05-24

Woo, Stella (Department: 2643)

Data processing: generic control systems or specific application

Specific application, apparatus or process

Digital audio data processing system

C381S098000

Reexamination Certificate

active

06898470

ABSTRACT:
Digital tone controls500include a first path502including a digital filter504and a scaler505for controlling a level of a low frequency component of a received digital audio signal. A second502includes a digital filter504and a scaler505for controlling a level of a high frequency component of the received digital audio signal. A third path503includes a scaler506for controlling a level of an unfiltered component of the received audio signal. A summer507adds a contribution from each of the paths to generate a composite signal having a selected gain-frequency response.

REFERENCES:
patent: 4803647 (1989-02-01), Dieterich
patent: 5892833 (1999-04-01), Maag et al.
patent: 5910904 (1999-06-01), Uramoto
patent: 6222110 (2001-04-01), Curtis et al.
“Sound Reinforcement Handbook” Written for Yamaha by Gary Davis & Ralph Jones, Section 5 1987, Rev 4, pp. 9.

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