[sdiy] supply voltages and signal levels

[Grant Richter]

Subtractive synthesis removes signal power to generate the final tone  
(hence subtractive). In order to have good signal to noise ratio  
after subtraction, you need to start with the hottest possible signal  
to begin with. 10 volts peak to peak is +4 dBv, which was the normal  
level for analog professional studios.

1 volt peak to peak (-10 dBv) is a so called "consumer" level.

>> I also see signal levels quite commonly being around 10V P-P.
>> Is this really necessary?  Are we looking at things degrading that  
>> much if we were instead operating at "line level" or similar?


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