Sound mixer with band separation

Details Sound mixer with band separation Sound mixer with band separation

1991-07-11

1993-08-17

Ng, Jin F.

Electrical audio signal processing systems and devices

With mixer

381 81, 381 85, 381100, H04B 100

Patent

active

052376192

ABSTRACT:
In a mixer there is a plurality of preamplifiers followed by a plurality of tone control groups connected to a plurality of voltage followers to which a series of active filters is connected, for selecting frequency bands of signals. Then a plurality of adders is connected to the seried of filters for mixing the signals in each frequency band selected by the filters and for sending the mixed signal to a plurality of line amplifiers and final amplifiers, with which loudspeakers are connected. The preamplifiers, the tone control groups, the voltage followers, the series of filters, the adders, the line and power amplifiers and the loudspeakers are connected so as to form a plurality of circuits, all of them equal to each other.

REFERENCES:
patent: 4357492 (1982-11-01), Campbell et al.
patent: 4374300 (1983-02-01), Ponto et al.
patent: 4993073 (1991-02-01), Sparkes
patent: 5129006 (1992-07-01), Hill et al.

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