Hi Maxi -
When you modulate a complex sinusoid with another one you only get one sideband, not both. The sideband's frequency is the sum of the two original frequencies - so if they're exact opposites you only get the result at frequency zero.
This is one reason for using complex sinusoids instead of "normal", real-valued ones.
cheers Miller
On Sat, Jul 25, 2020 at 05:44:37PM +0200, Maximiliano Estudies wrote:
Hey peeps,
I have another question regarding "The Theory and Technique of Electronic Music". It is not directly related to pd, but I guess that many of you will know this stuff and might be able to help me. I hope it is ok. In the last paragraph of 9.1 ( http://msp.ucsd.edu/techniques/latest/book-html/node164.html) the frequency of the modulating signal is defined as having negative frequency (in the book -*k??)*, why is that the case? wouldn't a sinusoid with positive frequency *k??* also give us two partials at 0 and 2*k??*?
Cheers, Maxi -- Maximiliano Estudies *VDT Referat Beschallung* +49 176 36784771 omslo.com maxiestudies.com
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