Re: Tubular simulations - AC30SIM, BC-60, LHX2, 5032

11/30/2000 12:07 AM

Rob Strand

Re: Tubular simulations - AC30SIM, BC-60, LHX2, 5032 Aron, I thought one of the aims of the 5032796 patent was to emulate the sag of supply of the tube amp. There's a whole heap of patents that try to emulate various aspects of tube-amps. The use of zeners in themselves is no better/worse than using normal diodes in our pedals, they have the same limitations. To me, Eric Pritchard seems to be going along the most practical path way for tube emulation - although not perfect.     Although full emulation/simulation of tube may seem an abstract route to follow. I believe it is the correct one. To build something that sounds like tubes you must build something that mimics what tubes do - ie. simulate them! Only after this stage has been done can you be certain to achieve that tube feel.     I don't think the number of stages used is, in itself, that important. One complicate stage could mimic the performance of a number of cascaded stages. However, to capture _all_ the aspects of tube sound it does seem more logical to use the cascade approach.     The best place to start is to try to simulate one tube-stage. The ideas of Pritchard can do this. Once this is done we can build-up a compound tube-simulator that does the real thing.     In principle, the AC30 simulator is doing Pritchard is doing, mimicing the non-linearity.     Regards   Rob