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<TITLE>Feedback in FM synthesis</TITLE>
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<P><FONT SIZE=2>Hello,</FONT>
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<P><FONT SIZE=2>last night I was experimenting with FM synthesis on my PC, a little program that calculates a sample based on four (or as many as I like ) operators, like the DX-7,FB-01 etc. </FONT></P>
<P><FONT SIZE=2>It's surprisingly simple to implement this type of synthesis, but when I wanted to implement feedback, I got stuck.</FONT>
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<P><FONT SIZE=2>Apparently on my FB-01, increasing feedback causes the operator to sound like a sawwave, only the two highest settings seems to effect the sound. But what is exactly fedback to what? I tried the output back to the modulation input, but that only causes to lower the frequency and increases the duty cyles, certainly no sawwaves! Does anyone know?</FONT></P>
<P><FONT SIZE=2>And why in a FM synth has only one operator feedback? Is it computationally too intensive or is it just useless?</FONT>
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<P><FONT SIZE=2>JJ</FONT>
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