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Re: Hiraga on Feedback

That is a good point. If the ear is creating masking IM distortion, then the position of the IM tone may not make it more sensitive, except for 'triple-beats' which are IM distortion products that are twice the level of normal beat frequencies. Can you imagine a 'triple-beat' generated from a 7th harmonic related nonlinearity? There is so much to know and understand.
I would also like to point out that most distortion comes from the active devices. In this case, bipolar transistor are the worst, fet's are second, and tubes are the best (in general). Usually the harmonic series generated by the devices falls off at a predicted rate. I have found it almost impossible to make much more than 3'rd (maybe 5th) harmonic in a tube circuit. It is the same with the best fet based circuits. Transistors, however, make a whole range of harmonics, and you must take extreme care, if you want the higher order harmonics to be reduced to almost nothing.

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  • Re: Hiraga on Feedback - john curl 05/15/0315:47:43 05/15/03 (0)
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