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Post by Hexspa on Jun 5, 2020 1:41:32 GMT
Audio Expert, p. 34. I understand it to say that IMD is sum and difference and the harmonic distortion thereof mixed with the direct signal.
In contrast, ring modulation in synthesizers, is the sum and difference sans any harmonic distortion and no direct signal.
So, these are similar, right? Does that mean IMD sounds like ring modulation but fatter and in parallel rather than series?
Thanks.
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Post by kwarkgebak on Jul 22, 2020 9:34:15 GMT
That is an interesting thought! Well ringmodulation has a carrier signal. Would it be correct to say IMD is like RM, using its own signal as a carrier? 🤔
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Post by Hexspa on Jul 23, 2020 21:26:11 GMT
Ya, seems like the same thing but IMD adds whereas RM replaces. Maybe I'm wrong. Just thought it was interesting that they're related.
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Post by rock on Jul 23, 2020 22:22:44 GMT
"Ya, seems like the same thing but IMD adds whereas RM replaces." Yeah, that sounds right so I looked for more details to try to understand it better, here's some thoughts and other stuff I found: IMHO, IMD in "good" audio gear is usually pretty low and not noticeable; I actually never though about how it sounded, I just knew it was bad and to be avoided. Ring modulation used for effect is the opposite since you make intentionally so you want to hear it. That said, I really don't know what IMD sounds like. In this article, en.wikipedia.org/wiki/Intermodulation they mention overdriving guitar amps and FX pedals to produce IMD so I guess that's what it sounds like...but I always though that was harmonic distortion? Maybe it's some of both? With Ring Modulation using a carrier and program, neither of the two inputs appear at the output. With IMD you have no applied carrier and apparently, all the original program plus IM components appear at the output. So yeah, they are related but the big difference I see is that IM uses no carrier. en.wikipedia.org/wiki/Ring_modulation#:~:text=In%20electronics%2C%20ring%20modulation%20BTW, RM is probably closer to FM in that they both typically use applied carriers. AM also uses a carrier so I guess it's in the club too. But of course in synthesis, program signals can be applied to carrier inputs... and everything can be plugged into everything else!!! |
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Post by Hexspa on Jul 24, 2020 4:21:38 GMT
It's madness.
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