Hi all... Has been a while!
Busy busy life at times. I'll confess though: I've locked myself out of my house, and have headed to the pub till my partner gets home - and in a moment of "now, how can I make this productive beyond drinking beer", I've decided to pop in here and ask a question Ive been pondering:
Threshold design on compressors.
Some of u may recall that I set about designing a dynamics system from scratch without referring to a current design... A bit of a fun check of "I think this is how I'd do it". Still haven't built my various gadgets, but: my understanding of threshold seems to differ to standard practice.
My threshold is more of a: rectify signal; Env follow / filter; extract peak off signal via more rectifying (user selected depth, aka threshold). This means that below the threshold, there is no control signal (ie it is zero volts).
I appreciate that this approach is very much a peak detection / compression approach.
Now that I'm trying to understand RMS control signal rather than my current peak dedigns, and also trying to understand existing designs like the SSL bus, I'm getting stuck: I don't understand how the threshold separates "no compression" from "some compression", because from my basic understanding of the circuits I looks at, all the threshold seems to do is amplify the RMS or add a DC to it or something. This means that I don't quite understand why the circuit isn't always in compression; and the threshold seems do what I'd assume ratio does (increase the amount of control signal similar to ratio).
What am I missing. Is it a diode in reverse that gets pushed to reverse flow? After a breakdown voltage is exceeded (that'd make sense)??...
Or am I missing that it does rectify again, extracting a portion of the RMS above certain level (where threshold amplify the signal up and down past this point).
As always, sorry for any misused jargon.
An explanation of any threshold circuit would be great, or a link.
Best,
Jonny
Busy busy life at times. I'll confess though: I've locked myself out of my house, and have headed to the pub till my partner gets home - and in a moment of "now, how can I make this productive beyond drinking beer", I've decided to pop in here and ask a question Ive been pondering:
Threshold design on compressors.
Some of u may recall that I set about designing a dynamics system from scratch without referring to a current design... A bit of a fun check of "I think this is how I'd do it". Still haven't built my various gadgets, but: my understanding of threshold seems to differ to standard practice.
My threshold is more of a: rectify signal; Env follow / filter; extract peak off signal via more rectifying (user selected depth, aka threshold). This means that below the threshold, there is no control signal (ie it is zero volts).
I appreciate that this approach is very much a peak detection / compression approach.
Now that I'm trying to understand RMS control signal rather than my current peak dedigns, and also trying to understand existing designs like the SSL bus, I'm getting stuck: I don't understand how the threshold separates "no compression" from "some compression", because from my basic understanding of the circuits I looks at, all the threshold seems to do is amplify the RMS or add a DC to it or something. This means that I don't quite understand why the circuit isn't always in compression; and the threshold seems do what I'd assume ratio does (increase the amount of control signal similar to ratio).
What am I missing. Is it a diode in reverse that gets pushed to reverse flow? After a breakdown voltage is exceeded (that'd make sense)??...
Or am I missing that it does rectify again, extracting a portion of the RMS above certain level (where threshold amplify the signal up and down past this point).
As always, sorry for any misused jargon.
An explanation of any threshold circuit would be great, or a link.
Best,
Jonny