Hello Bernd and Miguel,
SteveL came up with an ingenious way to produce a true exponential decay for a level meter. By applying feedback to a External Decay Peak Detector, he sets up the differential equation dy/dt = - Ky, which solves to y = e^ (-Kt). The original, shown at ran on a -1701, but easily ports to a -1452 as shown:
The result is an exponential decay, which makes an excellent level meter.
I haven't found a compression block that offers a gain reduction (ratio) output, but the limiter block definitely does.
Best regards,
Bob