ELI5: Why do non-FM types of modulation create sidebands in the frequency domain?

And *please* try to keep it ELI5, because every explanation of this I've found online immediately goes into physics and terminology that I am clueless about.

If you can use an analogy or another way of explaining it with English words that would be amazing.

Thanks.

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πŸ‘€︎ u/Qbccd
πŸ“…︎ Jan 23 2022
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With FM (frequency modulation), how can radio channels not get mixed up if the information is contained in the variation of the frequency?

If I set my radio to 90 MHz, I think the frequency of the signal must vary around that frequency to carry information. Don't the 90 MHz and 89.9 MHz signals mix because of this variation? Or are they confined to a narrow band?

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πŸ‘€︎ u/ucusansinekler
πŸ“…︎ Jan 07 2022
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Difference between frequency modulation, and phase modulation?

Howdy there. So I’ve heard some people use these interchangeably but I thought there was a slight different. I researched a bit online but was still sorta confused. Can anyone dumb it down for me?

Thanks in advance!

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πŸ‘€︎ u/brandonallenmusic
πŸ“…︎ Jan 07 2022
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ELI5: If FM is frequency modulation, then why does each radio station have a specific frequency?

I get that AM carries info by creating a sound wave with the contours of a (given frequency) wave's amplitude. But if you modulate 93.7MHz, then it's no longer 93.7. What am I not getting?

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πŸ‘€︎ u/Brumbleby
πŸ“…︎ Dec 08 2021
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Basic FM Synthesis in Reaktor 6 Primary (Frequency Modulation Synthesis)... youtube.com/watch?v=D9v9h…
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πŸ‘€︎ u/FunkySim
πŸ“…︎ Jan 10 2022
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Gangstalking isn’t your neighbors, local cops or otherwise. It’s people FAR away from you (most times). Hearing voices? Not all do, hearing frequency modulation w/o technical equipment? Not all do, experiencing involuntary muscle movement or involuntary memory recall? Not all do but if ANY of these…

Step 1: read up on galvanic vestibular stimulation as it pertains to hippocampus function. Google β€˜galvanic vestibular stimulation hippocampus’ and choose a PUBLISHED scholarly article.

Step 2: Look up the damn Wikipedia on AEHF satellites, the upgrade from MILSTAR. AEHF became fully active in 2018, your symptoms may mirror this.

Step 3: you have a phone call to make and an online hotline complaint to file. β€˜Illicit Use of AEHF Satellites’ is pretty cut and dry. Supposed to be secure military communication however much more (as we know) is being utilized.

An algorithmic approach to controlling your behavior, emotions, intentions aka your whole life is in place. Vestibular stimulation is the broad term for how your brain interprets sensory information like your sight, smell, hearing, touch, etc. even down to how you feel or experience every setting you are in. Cochlear nerves give access to much of this.

Message me with your individual experiences please but the blanket phone call to 800 424 9098 should stick to this or they’ll brush you off:

β€œExperiencing involuntary muscle movement and involuntary memory recall a la the effects of AEHF satellites utilizing galvanic vestibular stimulation. Hearing constant frequency modulation and frequency hopping without ANY technical equipment, after filing a complaint with the special investigations dept of the USAF inspector general staff they informed me that thousands of these calls are fielded. This is infringing on not only my personal freedom but my autonomy over my own faculties. Please help.”

Godspeed

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πŸ‘€︎ u/Blade_Runner27
πŸ“…︎ Oct 05 2021
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Yet another experiment in texture generation using frequency modulation v.redd.it/xy1durpfsgi71
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πŸ‘€︎ u/rrothenb
πŸ“…︎ Aug 20 2021
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Curious why certain modulation techniques best at certain frequencies

I'm guessing there's a physics reason for it, but I don't know, so I'm curious.

What is it about certain RF modulation techniques, that make them work best at certain frequencies, but not others?

Shouldn't all frequencies behave identically? It would seem that you should be able to simply scale the antenna size, make it larger or smaller, to work with whatever frequency you needed.

FM isn't used at low frequencies. AM isn't often used at high frequencies (although the aircraft band is above the FM band, and aircraft use AM, that's kind of a special case).

Is there something about FM that makes it work less well, at a lower frequency? I know FM takes more bandwidth than AM, but assuming the allowed band is wide enough for it, it should still work, right?

ATSC television has big problems in low VHF, as we know. It was designed for UHF only, originally, I heard, but then at the last minute, the FCC wanted to use it for VHF also, so here we are. I'm curious, why would ATSC have trouble if the frequency was lower?

Thanks!

Josh
K6JSH

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πŸ‘€︎ u/Krellan2
πŸ“…︎ Oct 06 2021
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Plugin Boutique Monthly Freebie With Purchase: Native Instruments "Freak" Three sound-bending modulation types offer retro radio lo-fi and wild sidechain ability, classic AM, ring mod, and frequency shifting techniques. Free with any paid purchase until 30 September. Limit to 1 per customer. pluginboutique.com/articl…
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πŸ‘€︎ u/Batwaffel
πŸ“…︎ Sep 01 2021
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Caelum Audio "Tape Pro" multi-effect tape audio plugin that introduces warmth, frequency shaping, modulation, noise and delay ($39) through 12 December pluginboutique.com/produc…
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πŸ‘€︎ u/Batwaffel
πŸ“…︎ Nov 15 2021
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2 frequencies make a torus, modulation makes it dance - a nice example of the possible structure of the Planck-scale that make up reality youtube.com/watch?v=ur-Ez…
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πŸ‘€︎ u/Shar3D
πŸ“…︎ Jul 25 2021
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WIP: using frequency modulation instead of noise to generate textures v.redd.it/mhcsn8wo6w071
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πŸ‘€︎ u/rrothenb
πŸ“…︎ May 23 2021
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Digital Wireless Mics modulation - Phase, Frequency, Amplitude, or something else?

One of my coworkers is bringing their son in to help me and learn about AV. Because he's a Boy Scout, I'm hoping to hit a few merit badge requirements at the same time. Looking over the "Radio" MB requirements, I see great opportunity to walk through wireless coordination but I realized that I don't actually know the method by which my digital units (Shure QLX-D) work.

I assumed FM due to the the ~360kHz width of a channel but all I can find from the manual under "Modulation Type" is "Shure proprietary digital". Anyone have any resources or avenues to look down so I can understand better to actually somewhat teach it?

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πŸ‘€︎ u/JackTraore
πŸ“…︎ Jul 12 2021
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It's conceivable that 90 years ago the inventor of FM radio named it "phase modulation" instead of "frequency modulation". If that happened, then today we would have AM radio and PM radio.
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πŸ‘€︎ u/jack-o-licious
πŸ“…︎ Jul 28 2021
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Some experimental renders using frequency modulation to generate complex surfaces (via Mitsuba) reddit.com/gallery/onl54n
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πŸ‘€︎ u/rrothenb
πŸ“…︎ Jul 19 2021
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A piece using frequency modulation
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πŸ‘€︎ u/rrothenb
πŸ“…︎ May 07 2021
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A Very Pretty & Well-Composed .GIF Showing the Effect of a Signal on a Carrier Through Amplitude Modulation & Frequency Modulation
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πŸ‘€︎ u/Estrella_Stella
πŸ“…︎ Apr 12 2021
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Confused about frequency modulation on the Jupiter-8

Whenever I wanna use it, I get no sound. Whenever I find out how to mess around with it, it sounds hideous. I don’t understand how it’s implemented and how to use it on this synth

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πŸ‘€︎ u/ireallylike808s
πŸ“…︎ Aug 13 2021
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Trying to wrap my head around frequency modulation

So I am playing around with Sytrus in FL studio and have a question about FM. Screen caps

 

OSC 1 = 3hz sine wave

When I solo OSC 1, I see 3 waves in one second (first image highlighted red)

 

OSC 2 = 1hz sine wave

When I enable OSC 2 to modulate OSC 1, I see only 1 repeating waveform every second (second image highlighted red).

 

Does this mean that in the second scenario, the frequency of the output wave is 1hz? Or is my understanding incorrect?

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πŸ‘€︎ u/SquattingWalrus
πŸ“…︎ Jul 03 2021
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Contact me if you hear frequency modulation noises (signal adjustment), voices or experience involuntary muscle movement or memory recall.

There’s a concise scientific explanation and a recourse you can take.

Perceptions of psychosis, demon possession, angels, aliens, telepathy all the way up to various forms of psychosis may be indicative. Mostly though hearing that β€˜radio tuning’ noise with potential involuntary muscle movement or memory recall.

Message me.

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πŸ‘€︎ u/Blade_Runner27
πŸ“…︎ May 30 2021
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What in frequency modulation!?
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πŸ‘€︎ u/FrogusTheDogus
πŸ“…︎ Jul 13 2021
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Forgotten Boardwalk releases Frequency Modulation with Pride inspired cans ForgottenBoardwalk.com/st…
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πŸ“…︎ Jun 02 2021
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using glsl like a frequency modulation synth reddit.com/gallery/m730kh
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πŸ‘€︎ u/lifecanblow
πŸ“…︎ Mar 17 2021
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Is SSB both a detuned frequency and a modulation type?

Before I was researching SSB, I simply assumed it was simply AM modulation detuned from the main frequency (with higher power limits). However, it seemed through research that SSB was, in fact, a unique modulation (what AM is to FM). This confused me. Is SSB using different frequencies? Is it truly a different modulation, or is it something unique? Any help would be appreciated.

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πŸ‘€︎ u/EuphoricPenguin22
πŸ“…︎ Apr 11 2021
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Applying frequency modulation (as popularized by various Yamaha synthesizers during the 80’s) to generating 3D textures.
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πŸ‘€︎ u/rrothenb
πŸ“…︎ Apr 22 2021
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If the borg had adapted to all frequency modulations on the phasers, but were killed by holographic bullets with the safety off, ostensibly acting like real bullets. The federation should be able to use gunpowder firearms as a starndard weapon against the borg.

I bet that level of technology is stupid cheap to replicate

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πŸ‘€︎ u/Gupperz
πŸ“…︎ Aug 15 2020
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A somewhat rough render of an animation based on frequency modulation v.redd.it/x8l22j1m0pu61
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πŸ‘€︎ u/rrothenb
πŸ“…︎ Apr 22 2021
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STOP DOING FM (SYNTHESIS) (FREQUENCY MODULATION)
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πŸ‘€︎ u/noltak
πŸ“…︎ Apr 30 2021
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I need help. I wanna find frequency modulation but with mixing another sound? where I can find this plugin for mixing sounds where one sound will modulate the other? thanks for answers
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πŸ‘€︎ u/MatejSteinhauser
πŸ“…︎ Feb 10 2021
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Frequency Modulation on the Behringer Neutron

Hey everyone, Not sure if I'm posting in the right place so please redirect me if I should be asking elsewhere but I'll ask anyway.

So, does anybody know if there is a way to modulate the Filter cutoff of the Neutron to a random value each time a note is played? Something that would sound similar to S&H modulating the filter but instead of slaved time signatures like 1/4, 1/8, 1/16, the value of the cutoff only being retriggered when a note is played.

If anybody has the answer or could point me in the right direction I would be very grateful.

Thank you.

Charlie. :)

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πŸ‘€︎ u/cbjg95
πŸ“…︎ Apr 04 2021
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Frequency Modulation Vs Amplitude Modulation
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πŸ‘€︎ u/Jedi_Lucky
πŸ“…︎ May 13 2019
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Another frame from the frequency modulation animation
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πŸ‘€︎ u/rrothenb
πŸ“…︎ Apr 22 2021
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unCoMmoN aNglE of big Frequency Modulation Expedition Gravitational Force
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πŸ‘€︎ u/Swiss_Reddit_User
πŸ“…︎ Jan 05 2021
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What is the difference between Cross Modulation and Frequency Modulation?
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πŸ‘€︎ u/DoxYourself
πŸ“…︎ Apr 05 2021
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