System for audio signal processing

Details System for audio signal processing System for audio signal processing

2005-01-10

2009-08-18

Faulk, Devona E (Department: 2614)

Electrical audio signal processing systems and devices

Including frequency control

Having crossover filter

C381S098000, C381S100000, C381S102000, C381S103000, C381S104000, C381S056000, C381S058000, C381S057000, C333S02800T, C333S02800T

Reexamination Certificate

active

07577263

ABSTRACT:
A sound reproduction system comprising a digital audio signal input (1), a digital audio signal processor (2, DSP) and a digital audio signal output (3) wherein the digital signal processor (2, DSP) comprises a high pass (HP) filter (21) with a high pass frequency (f), an amplifier (22) for a signal filtered by the HP filter, and a low pass (LP) filter (23) with a low pass frequency (f) for filtering the signal after amplification by the amplifier (22) and for providing an output signal, and the digital processor comprises an establisher (24, 25) for establishing the high pass frequency or the low pass frequency and a matcher (26) for matching the high pass frequency and low pass frequency of the high pass filter and low pass filter respectively to each other.

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patent: 5200709 (1993-04-01), Saito et al.
patent: 5714918 (1998-02-01), Menkhoff
patent: 2003/0216879 (2003-11-01), Hashemian
patent: 2006/0153403 (2006-07-01), Lechner
patent: 03046897 (1991-02-01), None

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