A low-cost, yet high-performance dual limiter/compressor/de-esser package is described, which overcomes most limitations of conventional designs. The main features include feedforward side-chain construction; selectable balanced or single-ended RFI-protected input/output configuration; abrupt de-esser action; user-selectable hard- or soft-knee compression curves through independent threshold and compression ratio controls that will not fiddle with the unit's gain, before threshold, thus avoiding time-consuming adjustments; a VCA design featuring a consistently high-clipping headroom to avoid transient distortion; availability of very fast attack times, important to limiting action; and finally an unconventional dual-link control to allow for unusual applications. Precision, temperature, and drift-compensated circuits are used extensively to ensure consistent action in spite of the use of standard components. the unit lends itself to partial integration and to appalication such as remote control and multiband compression.
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