Wave dependent compressor

Details Wave dependent compressor Wave dependent compressor

1994-02-14

1996-01-09

Kuntz, Curtis

Electrical audio signal processing systems and devices

Including amplitude or volume control

With amplitude compression/expansion

381107, 381108, 333 14, 455 72, H03G 700

Patent

active

054836000

ABSTRACT:
An audio compressor using interactive layered time constants to create an easy to use compressor which self adapts to the program characteristics and provides a desirable and pleasing effect over a wide range of audio program material. The audio compressor includes an adaptable filter connected between an output signal path and a control feedback signal path of a voltage control amplifier. The adaptable filter comprises a first resistor-capacitor circuit connected to the output signal path and producing a charging/discharging voltage which is more dependent on a transient peak value of the audio signals and a second resistor-capacitor circuit working under the charging/discharging voltage of the first resistor/capacitor circuit for producing a charging/discharging voltage which is more dependent on an average value of the audio signals. The second resistor-capacitor circuit is connected in series to the first resistor-capacitor circuit for providing a wave dependent control feedback signal to the control feedback signal path which feedback signal is instantaneously and continuously dependent upon both the average and the transient peak value of the audio signals.

REFERENCES:
patent: 4430754 (1984-02-01), Ishigaki

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