Variable-slope-compressor-expander


Posted on May 6, 2012

Compression and expansion ratios other than 2: 1 can be achieved by the circuit shown. Rotation of the dual potentiometer causes the circuit hook-up to change from a basic compressor to a basic expander. In the center of rotation, the circuit is 1:1, has neither compression nor expansion. The (input) output transfer characteristic is thus continuously variable from 2:1 compression to 1 :2 expansion. If a fixed compression or expansion ratio is desired, proper selection of fixed resistors can be used instead of the potentiometer.


Variable-slope-compressor-expander
Click here to download the full size of the above Circuit.

The optional threshold resistor will make the compression or expansion ratio deviate towards 1:1 at low levels. A wide variety of (input) output characteristics can be created with this circuit.




Leave Comment

characters left:

Related Circuits

  • New Circuits

    .

     


    Popular Circuits

    Audio VU meter with Extra wide Dynamic Range 69 dB using Arduino
    DIY mobile phone jammer Schematic Diagram
    Home Built Laser Projector
    PSK transceiver circuit
    battery monitor circuit
    SCR Phase Control Speed Control/Dimmer
    Timer circuit
    Frequency counter Input schematic
    Photoelectric controller circuit immunity
    Corridor counter delay circuit for controlling lights



    Top