Digital equalizer apparatus enabling separate phase and amplitud

Details Digital equalizer apparatus enabling separate phase and amplitud Digital equalizer apparatus enabling separate phase and amplitud

1988-03-22

1989-12-19

Isen, Forester W.

Optics: eye examining, vision testing and correcting

Spectacles and eyeglasses

Brace arm or semi-rimless mounting

333 28T, H03G 500

Patent

active

048888087

ABSTRACT:
A digital equalizer for audio system applications is based on a FIR (finite impulse response) digital filter whose amplitude and phase/frequency characteristics can be respectively independently established in accordance with input data representing an arbitrary amplitude/frequency characteristic and input phase data from which an arbitrary phase/frequency characteristic for the filter can be derived. In addition to audio frequency response equalization, the apparatus can be provided with a microphone howl suppression function.

REFERENCES:
patent: 4683590 (1987-07-01), Miyoshi et al.
patent: 4751739 (1988-06-01), Serikawa et al.

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