Archive of the former Yahoo!Groups mailing list: Yamaha CS80

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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