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Frequency dependent delay or not?
Merlijn van Veen:
A while ago some colleagues and I had a vivid discussion whether group delay can be considered frequency dependent delay. Be warned though, this is a controversial topic and as far as I can tell no consensus has been achieved.
Please click here to read more.
Anxious to hear what the hive-mind thinks.
EDIT: Later in this thread Frank makes me realize that the minus sign is indeed mandatory and how I wished I just took a little bit more time to think it through :-[
Keith Broughton:
I read "frequency dependant" as activating the desired processing (like compression) only when a level threshold at a specified frequency (or freq band)is reached.
Under those criteria, group delay would not be "frequency dependant"
Just my POV...
Stelios Mac:
--- Quote from: Keith Broughton on July 20, 2017, 07:28:48 AM ---I read "frequency dependant" as activating the desired processing (like compression) only when a level threshold at a specified frequency (or freq band)is reached.
Under those criteria, group delay would not be "frequency dependant"
Just my POV...
--- End quote ---
Shouldn't that be called frequency AND level dependent?
A conventional compressor is level-dependent (as the level crosses the threshold, compression starts to happen) - A multi-band compressor is that, whilst also being frequency dependent.
Frequency dependent should mean just that, "depends on the frequency" - not "depends on volume at a given frequency" or anything else.
Merlijn van Veen:
"Frequency dependent delay" as in "variable delay over frequency".
Keith Broughton:
--- Quote from: Merlijn van Veen on July 20, 2017, 08:09:49 AM ---"Frequency dependent delay" as in "variable delay over frequency".
--- End quote ---
So as the frequency varies, the delay varies?
I buy that.
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