"The all metal threshold response is immediate. The Discrimination response has to wait until after the signal peaks to determine if there is enough signal strength to trigger the Disc circuit.. The response is like this,,,,cut off, threshold pitch rise, peak, start the fall off, cut off, disc response (IF possible), cut off."
This sounds rather primitive. A properly-designed bit of software (or electronic circuit) will match up the delays, so the two channels are perfectly in synchronisation. In software this is easy, just read the data into memory, and read it out the appropriate time later, in essence. In hardware, it may be harder, as delaying signals without degrading them is not so easy, or cheap (bucket brigade delay chips). If you're storing stuff in memory anyway, as a necessary part of doing digital processing, then it's not a complex overhead to store more.
Maybe it's only recently become a viable operating mode to offer because of lower-cost higher-performance microprocessors.
My intuition tells me that all-metal audio modified with a rolling-discrimination tone-change ought to provide more subtle audio clues than good regular discrimination operation. Those little leading-edge / trailing edge noises may alert you, to iron vs. non-iron, for example.
Edited 3 time(s). Last edit at 04/27/2017 08:56PM by Pimento.
