Electrical audio signal processing systems and devices – Including amplitude or volume control – With amplitude compression/expansion
Patent
1987-02-12
1989-04-18
Isen, Forester W.
Electrical audio signal processing systems and devices
Including amplitude or volume control
With amplitude compression/expansion
333 14, H03G 700
Patent
active
048233927
ABSTRACT:
In a compressor for controlling the dynamic range of audio signals which comprises an operational amplifier and a gain-controlled amplifier connected in inverse parallel with the operational amplifier, the signal applied to a rectifier for producing the control signal for the gain-controlled amplifier is given an exponential waveform. This can be achieved by the use of two diodes connected in inverse parallel.
REFERENCES:
patent: 4677678 (1987-06-01), McCutchen
Isen Forester W.
Standard Elektrik Lorenz Aktiengesellschaft
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