Demystifying the Vorsis 31-Band Limiter

[mediatechnology]

"Demystifying the Vorsis 31-Band Limiter," Radio World November 16, 2011.

An interesting article about Wheatstone's 31-band broadcast limiter.

They make an interesting point that if you break the signal into enough bands the amount of limiting, per band, is very shallow.

https://www.radioworld.com/columns-and- ... nd-limiter

[mediatechnology]

Yes, it's DSP. And many more MIPS in addition to the 62 channels are dedicated to the other functions: 5 band AGC, MPX generation etc.
Ideal for making the mod meter stand at 100% all the time.
Reminds me of JRs shiny hammer.

http://wheatstone.com/2016-11-28-09-23- ... inary-info

I still think the Texar/Getner 4 band RMS analog designed by Glen Clark is the best FM processor I've ever heard. https://www.proaudiodesignforum.com/for ... f=12&t=763

[mediatechnology]

Seems as though the current summing you and JR were discussing would be usable in an analog multiband dynamics box...
Just short the VCA outs together...?

Yes. Good catch.
Be mindful of the paralleled output capacitance IIRC around 15 pF for a 2180 and adjust your Cfb in the I-V accordingly.
You might check that value.
IIRC the 2162 was lower COut due to smaller geometry.

BTW the Texar used a cool trick to prevent front-end overload before the AGC and comp.
They put a Cds cell leg-leg between the input resistors to make an H-pad.
It was impossible to overload.
They also had a gated AGC trick.