Electrical audio signal processing systems and devices – With amplifier
Patent
1997-03-04
2000-02-22
Chang, Vivian
Electrical audio signal processing systems and devices
With amplifier
381107, H03F 2100
Patent
active
060289449
ABSTRACT:
A signal processing apparatus for processing data digital signals is disclosed. The signal processing apparatus includes a high-efficiency power switching amplifier that optimizes processing during low-power applications. A signal equalizer is further coupled to the power switching amplifier and has a plurality of signal bands for defining equalization characteristic desired for the signal processing system. A gain control unit is coupled to the signal equalizer for adjusting gain of the equalized input signal handled by the signal equalizer. Lastly, a digital amplitude compressor is coupled to the gain controller and the power switching amplifier and is programmable so as to compress only those signals having an amplitude greater than a first threshold level without compressing those signals that fall below that first threshold level. Typically, low-power applications cover wattage ranging from two to seven watts of power.
REFERENCES:
patent: 5481616 (1996-01-01), Freadman
patent: 5488668 (1996-01-01), Waldhauer
patent: 5594386 (1997-01-01), Dhuyvetter
patent: 5710820 (1998-01-01), Martin et al.
Hamdi Rabah S.
Markow Mitchell A.
Chang Vivian
Compaq Computer Corporation
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