Coding Challenge #110: Recamán's Sequence - Part 2 (Audio)

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Other Parts of this Challenge:

References:

Videos:

Related Coding Challenges:

Timestamps:
0:00 Welcome to the second part of the challenge!
4:00 Using the numbers of the Recamán's Sequence as the frequency of the oscillator
5:25 Thinking of the numbers of the sequence as keys of a piano!
10:52 Restricting the frequency range
14:05 Conclusion!

Editing by Mathieu Blanchette
Animations by Jason Heglund
Music from Epidemic Sound

#numbersequence #recamanssequence #music #audiovisual #visualization #p5js #javascript

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you are the greatest, you stay so positive the whole time and youre an awesome programmer :D keep up the absolutely awesome work.

loukask.

Dan, you're a national treasure. I can no longer watch your videos and resist the call of sponsorship-- so now I'm a sponsor+subscriber. I'm also eagerly gobbling up Nature of Code (which I bought in physical form). Keep on trucking, don't change, and repel any urge to edit these videos. Just keep the torrent going!

JoseNario

4:45 "Human music. I like it"

joshuacleverley

This was actually really cool! This feels like something that a lot of people could try even without a lot of coding knowledge, perhaps as an exercise.

OrangeC

Just the MOST incredible channel/resource. Thank you!!!

lank_asif

MIDI: Musical Instrument Digital Interface. A way of connecting computers to electrically controlled Instruments. E.g. synthesizers, organs, etc.

It is also an audio file format.

JV-pukx

I really liked the idea of a "music of the spheres" so I mapped the frequency to a few scales in the step() function:

if (note % 12 != 2 || 5 || 7 || 10 || 12) { //C Minor. Because Emo McSobbypants says so.
// if (note % 12 != (2 || 4 || 7 || 9 || 11)) { //C Major super happy sounds
// if (note % 12 != (2 || 3 || 5 || 7 || 9 || 10 || 12)) { //C Minor Pentatonic w/ flat 5 "blues scale"
freq = floor(random(2, 3)) * (pow(2, ((note) - 49) / 12) * (1760)); //randomly spread it out between some octaves octaves
} else {
freq = pow(2, (-48 / 12)) * 1760;//if the note isn't on the scale, return the root of the scale
}

Also, here's a really crude way to swing the notes in the draw() function:

if (count % 2 == 0) { //this will swing the notes. Jazz hands! yeah!
frameRate(8); //8 notes per second-ish.
} else {
frameRate(4); //4 notes per second-ish
}

justincurtiss

Could you make a mockup of the library of babel, how it turns the page adress into the text on said page.

AB-Prince

Great fun! I think I prefer it with the full range of the piano. Nice job with the envelope. It really improves on just having the oscillator. A small note on the modulo operator. The operator's called modulo, and the number following it is called the modulus. So n % 6 would be read as n modulo six. Six is the modulus.

DaveBriccetti

I felt those first initial notes! IT was crazy on my subs...

julianbell

You could try to use a sound wave with overtones, such as triangle or sawtooth waves, if you want to hear the deepest tones.

d_vibe-swe

I'm visiting New York from Mississippi today and I'm hoping to run into you!

LTPB

Because of the (Audio) in the title, I first thought it will have no images ^^

kaosce

Take each frame of visualisation and interpret it as time x frequency table

ДмитрийВасильев-яб

Damn... Changing that sine into a square turned that into a very, very haunting melody!
Also, for some reason they decided to depricate P5.env, point us to P5.envelope but forgot to add P5.envelope to the documentation, so now we're stuck with an annoying message that pops up every time we call env.play (which in this example is 5 times per second) -_-

morphman