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Sound

ciechanow.ski

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Re: Sound

#71

Post by russellbeattie »

sgraaf wrote: post #52

Bartosz' blog posts are in a league of their own. They way he is able to explain complex subjects by starting from first principles, gently adding more and more layers, with beautiful, custom-made figures and animations is truly, literally, awesome. I strongly recommend supporting the author via his Patreon if you enjoy his blog posts.

These are amazing - from the design to the interactive demos to the writing. I think "digital monograph" is almost a more apt description than "blog post". I've written tons of blog posts and they have almost nothing in common with what he's doing. 8,000 well written words plus formatting and links plus 50 or so embedded demos is really an astounding amount of work. What I appreciate most is the use of the medium itself. Imagine if the standard format for academic papers was updated from the black and white two-column format used for a half century to something like this?

Re: Sound

#72

Post by voidhorse »

nonrandomstring wrote: post #20

+1 for the recommendation for "The Scientist and Engineer's Guide to Digital Signal Processing" by Steven W. Smith. I spoke to Steven many years ago about his putting all of the book PDFs online for free and since then have recommended at least 5 university libraries to buy it because the students could get free copies of a great book that can be referenced in the library. FWIW the The Scientist and Engineer's Guide…

I'm actually reading through it right now after trying out a few other DSP resources. It is by far the clearest and most approachable, without sacrificing much depth at all. It's a great book.

Re: Sound

#74

Post by jcims »

woliveirajr wrote: post #64

> at room temperature the average velocity of a particle is a staggering 460 m/s so to make the particles visible I’m showing their motion significantly slowed down Isn't 460 m/s the speed of the shock waves? I mean, it you make some "air particle" move, it'll hit a nearby particle, and so on, and this wave has a speed of 460 m/s. In a solid object (wood, for example) the particles are close together and the speed wi…

Yes, IIUC basically that's the point where the local particle speed is no longer sufficient to clear the leading edge of the wave.

Re: Sound

#75

Post by apitman »

I was 20 minutes into this before I realized the interactive bits were automatically turning themselves off and on based on which one was visible in the viewport. That seems obvious, but the fact that it worked so intuitively and without bugs on my system says a great deal. This is what master UX design looks like.

Re: Sound

#76

Post by pqn »

woliveirajr wrote: post #64

> at room temperature the average velocity of a particle is a staggering 460 m/s so to make the particles visible I’m showing their motion significantly slowed down Isn't 460 m/s the speed of the shock waves? I mean, it you make some "air particle" move, it'll hit a nearby particle, and so on, and this wave has a speed of 460 m/s. In a solid object (wood, for example) the particles are close together and the speed wi…

Speed of sound isn't too directly affected by air pressure I think (holding all else constant): https://physics.stackexchange.com/a/146207

Re: Sound

#77

Post by skilled »

gtirloni wrote: post #69

How can one learn to create these visualizations?

By inspecting page source.

If you mean technical, you have no choice but to actually study the topic and understand it so that you can create examples like the author did.

Re: Sound

#78

Post by exikyut »

gtirloni wrote: post #69

How can one learn to create these visualizations?

Depends what point on the spectrum you refer to by "how". Implementation, creativity, or the focus and discipline required to combine the two? :P

I had a quick look; as always with the presentations on this website, all the un-minified JavaScript is right there for you to pour over: https://ciechanow.ski/js/sound.js

So that covers the implementation: a giant pile of WebGL to power the rotatable boxes and animate effectively using the GPU, alongside in this case a bunch of Web Audio code.

Unfortunately that doesn't cover the focus/discipline part, which I would definitely appreciate some pointers on... one of these days I'll find some that fit within my ADHD address space xD

Re: Sound

#79

Post by PostOnce »

This man needs a genius grant, and this is about the 6th time I've thought this.

Any one of these pages would be a feat, an achievement to be proud of, but as a collection, it forms one of the greatest educational resources of its type that I have known.

These things can give you more intuition about a subject in 45 minutes than a textbook might be able to in 3 months, because it's interesting and not dry.

I wish I had more time to rant about this right now, but I haven't, so: Kudos. Another amazing job.

Re: Sound

#80

Post by Nition »

I think my favourite part of this is being able to draw your own waveform and then play it. Super cool. You can learn about something so much faster when it's right there and instantly tweakable.
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