Adam Schabtach writes:
>>That doesn't sound right. Squaring a signal (i.e. multiplying it by
itself) doesn't rectify it, in the general case. Consider a sine wave as an
input signal...<<
Yes, you're right. When a waveform is multiplied by itself it distorts its
shape into something else, as you pointed out, it's squared. What I should
have said is that it acts kind of like a rectifier for the purposes of an
envelope follower, since it takes the negative portion of the waveform and
moves it up into the positive side, even though its shape is modified too.
But that shouldn't matter much for the purposes of an envelope follower.
For a true rectified wave, the MOTM-700 can be used along with the MOTM
mixer for inverting one of the signals and for matching the levels of the
inverted and non-inverted portions.
-Elhardt