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UncleAfx
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DSP fun

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Well once again I managed to create something I don't fully understand. I can explain what it does and how I did it, but not why it works like it does. What's it good for? Don't know that either. ;-)

What I have here is very basic... just one waveform in each of the 2 machines each playing a whole note on c4.

Play them both together and they play a perfect C4 sine. Play them each each individually and you hear 5ths. Play both together, but with one waveform reversed and they play a pefect F4 sine.

Now to explain exactly how I did it will take some time, probably better to do it in the form of a pdf. But each waveform was made with subsynth exports, one being c4, the other F4.

SToons Music
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Joined: 03/01/2018 - 02:48
Maybe has something to do

Maybe has something to do with one freq being in phase in both samples but the other freq in opposite phase in the samples. Are we allowed to guess?

Answer... I think yes. Pan channel 1 fully left, channel 2 fully right. If you get your head in the exact right spot one freq vanishes.

Anyone who has mixed live sound for bands has encountered the dreaded phase issue. Hey... who the @#$% wired the mids?

Now you've made me curious yet again and distracted me from other issues. Incorrigible.

ps if you make the PCMs mono and change to glide notes you eliminate the click ;-p

Pps here's an idea - do the same but with a big assed pad in each pcm, do a stereo morph in the Mod using an Ultra low lfo, results should be amazing.

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SToons Music
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Like this. But with panning

Like this. But with panning and possibly more complex waves (can you encode say a square wav similarly?). Dude you have a knack for this don't you, making others curious about odd things? The Neil deGrasse Tyson of audio.

Hmm. Guess I can write tonight off in advance.

Play with the settings on the flanger and chorus and the results are, let's just say, amusing. This is truly sick. Massive cool pad from 2 sine waves. There are like sympathetic 7ths and lots of other harmonic interaction in there. You guys are freaking me out.

And yes, you *better* tell us how you created those waves.

Final note for now - innocent bystanders should note the use of different phase and rate settings on the fx. That's a whole related subject.

If you just hit play and then start playing with the rate knobs on the fx it's more fun than a barrel of monkeys.

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UncleAfx
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Haha! The Neil deGrasse Tyson

Haha! The Neil deGrasse Tyson of audio... I better take that compliment while I can. The truth is, I'd trade my knack for this sort of thing for your ability to apply it any day. :-) I like your style man. I can make decent sounding stuff for about 8bars then it starts to turn cheezy.

Ok. How do I do this? Bear with me, I might not be so good at explaining, but I'll try... stay tuned. In the meantime I tried a saw version. This time with octaves instead of 5ths.

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SToons Music
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Joined: 03/01/2018 - 02:48
OK, so here's a question...

OK, so here's a question... instead of different wave types, how about intervals? Can you do say a major 2nd and a major third set to see what happens when you morph whole tone and diminished sounds?

Imagine the insane stuff if you had different interval sets all combined thru different ULFOs all morphing over a period of time. Crazy unpredictable chord sequences or just a harmonic mess? All from a few sine waves.

Intruiging.

Or is that just a PadSynth ripoff?

paulovski
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Have you been drawing your

Have you been drawing your own samples again?

The resident empirical engineer :)

UncleAfx
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Probably.All they are to

Probably.All they are to start with.is note exports.
In my first example, I exported a c4 wav. Left channel only in the mixer.
Then f4, right channel only.
Then for each export, I zoomed in and found just a single cycle and saved those and renamed them.

Now here's whats important...

F4 of course has a shorter cycle than C4, but I want them both to loop and cycle together in one stereo file for the next step. So in order to do that I took note of the sample lengths. C4 was 168 and F was 126.
Now I need to know the least common multiple, or lowest number they both share when multiplied out. It works out to be 504, and there's an app for finding that: https://play.google.com/store/apps/details?id=com.mikeyaworski.lcm :-)

So then the next step is to copy and paste each sample out until its 504 samples long. Then if you know how Paste Mix works in the editor you can turn those stretched out left anf right channels into a perfectly loopable sample.

Almost there. Now turn that to mono and it becomes our sine 1 sample.
Now back up a few steps, just before you hit paste mix to make that stereo sample and hit reverse first. This time your stereo sample will become sine 2.

UncleAfx
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Yeah that wave editor...

Yeah that wave editor... thats my favorite toy. :-)

SToons Music
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Joined: 03/01/2018 - 02:48
I trust this one is self

I trust this one is self explanatory lol.

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UncleAfx
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Yep. This is why we need that

Yep. This is why we need that range lock feature. :-)

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SToons Music
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Joined: 03/01/2018 - 02:48
And this one stays to show

And this one starts to show the potential around bar 16. Ridiculously cool drone, still so much to learn.

I now crown myself, Master of the Atmosphere (bows)(standing at the bow of the Titanic)

How are your sub-woofers doing?

Edit: oops, had to fix some stereo and pan issues. Would you buy Apprentice of the Atmosphere?

Another thought, chopped up in little pieces this would also produce some cool wavetables.

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SToons Music
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Change the wave loop

Change the wave loop direction in Sine 1 to "Forward and Back" ...

FWIW kept getting the odd annoying click. Realized I had to set the envelope in the Modsynth to Legato. Live and learn

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UncleAfx
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Nice! You by chance use the

Nice! You by chance use the Guide app? That'd make a nice group. Actually most of what we're doing here is a giod reason to have that.

Did my wave making explanation make any sense? I'm working on a pdf version right now with screenshots.

SToons Music
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Joined: 03/01/2018 - 02:48
Going to read that stuff soon

Going to read that stuff soon, I just cut and re-pasted your wave a random bunch of times in the editor to allow loop points if that's what you mean. I created nothing, just tweaked a whole lot of things.

UncleAfx
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Nah that's fine. I was just

Nah that's fine. I was just wondering if what I already wrote makes enough sense and I'm just wasting my time on the pdf. I'll probably still finish it anyway. :-)

SToons Music
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Oh, please do. Like I said, I

Oh, please do. Like I said, I get musically sidetracked and then when inspiration fails I start reading the technical stuff. Everything in little cycles. Like an LFO.

SToons Music
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Joined: 03/01/2018 - 02:48
This one is cool because, if

This one is cool because, if you mute tracks 3 and 6, you will hear the source sine waves. If you mute 1, 2, 4 and 6 and listen to only the crossfaded tracks, 3 and 6, you'll notice that not only does it produce upper harmonics but (seemingly) lower ones as well; the sound seems much deeper.

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