XPost: rec.music.gdead, sci.electronics.design   
   From: jeroen@nospam.please   
      
   SoothSayer wrote:   
   > On Fri, 04 Mar 2011 08:55:23 +0100, Jeroen Belleman   
   >  wrote:   
   >   
   >> SoothSayer wrote:   
   >>> [...]   You have to MODULATE the AMPLITUDE of a   
   >>> "carrier" with the intended "signal"..   
   >>>   
   >>>   Simply seeing something that appears to be "enveloped" does not mean   
   >>> that it is amplitude modulated. Linear summation does not get you there.   
   >> Time for a trigonometry refresher course:   
   >   
   >  Are you sure?  Could it be semantics?   
   >> Modulation is multiplication of two signals, e.g., for sine waves   
   >> cos A * cos B.   
   >   
   >   Funny, I thought modulation was using one signal to control the   
   > amplitude of another signal.   
   >   
   > Multiplication?   
      
   Yes, multiplication. And the product can be exactly represented   
   by the *sum* of some number of other sine wave signals. This is   
   basic signal processing mathematics. Usenet isn't really the   
   ideal medium to teach this stuff. To much pollution. Try   
   Wikipedia, or perhaps  a book.   
      
   Jeroen Belleman   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)