Special-purpose component for implementing a "limiter static curve" for use in the element-by-element construction of a dynamic range limiter. The control signal input is assumed to originate from the peak measurement of an audio signal, converted to a logarithmic scale in base-2. This "dB" signal measurement is subtracted from the limiter threshold (adjustable via the Parameter Window). If this difference is negative, the control output is made equal to the difference, otherwise it is set to zero. It is intended that the output is sent to a Control AntiLog2 component for conversion from the logarithmic scale into a gain value. IMPORTANT: This component is not intended for any use other than the specialised application described above.
See [Zo] section 7.1 for an explanation of "static curves", and section 7.3.1 for a discussion specific to the implementation of a "limiter static curve". Note that, with respect to that reference, the present limiter static curve is assumed to have a slope of 1.