Hi
Seems that I'm unlucky even with the experts here; anybody have a clue at my question?
Through the help of a friend I found that the link between filter-eg and velocity is a simple sum between signals, with the obvious calibrations at some points , the unsolved mystery is: why do I hear the overall level of the envelope increase, that is even AL is pushed on, if I'm getting a simple addition?
I can only guess that the passive RC located at the TWS board can equal to a variable decay time AD envelope, but I don't get the same effect if the CS is played with neither IL or AL doing any modulation....can anybody shed some light on this?
Thanks to anybody wanting to help me
Max
----- Original Message -----
From: Max Fazio
To: yamahacs80@yahoogroups.com
Sent: Sunday, May 31, 2009 6:23 PM
Subject: [yamahacs80] CS80 diagram question: velocity and filter envelope
Hi all
Sorry if I make too boring question, I would just need to understand some of the process; by looking at the circuit diagram I see that the TR1 through 9 and the "F " (both FH1/2 and FL1/2) CVs do mix together but I didn't understand in what way: I see a mixing filter before the mixing pin .
The F signal mixes all the modulation signals (velocity, aftertouch and LF modulation), but I care for the velocity; as I could understand the TWS board creates a fixed 10s decay envelope whose amplitude is driven by the key velocity, its amount as a modulation signal is balanced into the TRG1; both the signals, envelope and modulation, mix together.
What I can't understand is: what operation is made there:is it a sum or a multiplication between the signals?
Can anybody solve my problem?
Please reply
M
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