/sci/ - STEM

Difference between instruments playing the same note Anonymous 17/11/30(Thu)16:21 No. 16585 [Reply]

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At the same pitch? I'm trying to create a piece of music from an advert since I cannot seem to pay anyone enough to recreate it as they fear copyright backlash as a piece of production music.

The original track uses several synthetic guitars

https://www.youtube.com/watch?v=_T3skSSt1xU

https://www.youtube.com/watch?v=5mqqj0yfiWM

This is my reasonable attempt :
https://vocaroo.com/i/s1epL4Ex3kBz

I'm an expert at the piano but unfortunately don't really know much about guitars and that's why despite me playing the same notes at the same pitch, it sounds almost entirely different.

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Anonymous 17/11/30(Thu)17:03 No. 16586

It's not possible to explain it in analogy to sine waves, because instruments are not sine wave generators. If instruments were capable of producing perfect sine waves at consistent phases, frequencies, and amplitudes then yes, they would all sound the same.

Comparing an electric guitar to a piano:
1. Plucking a string causes it to vibrate differently vs. striking it. For a given pitch, this generates differently shaped "main waves", which itself gives the sound different harmonics. Compare the sound of a piano to that of a harpsichord. The harpsichord has more harmonics.
2. The guitar doesn't have a resonance chamber, nor do its strings vibrate the air directly. Instead it uses electromagnets to measure the distance of a piece of metal several thousand times per second. Because the strings vibrate perpendicularly to the pickups, this adds a non-linear distortion to the wave, which adds harmonics.
3. Certain maneuvers are possible in a guitar but impossible in a piano. For example, a piano is not capable of doing a proper glissando, because it can only produce notes at discrete ranges. A guitar is also able to do tremolo, which I think it's impossible with a piano.
4. Finally, different mechanisms of producing sound cause the attack, decay, sustain, and release phases to have different lengths, which also affects the "feel" of the sound.

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Anonymous 17/12/01(Fri)09:22 No. 16593

i think some of your later notes are off
also it will sound slightly different if it's in the context of a chord or if there are other parts playing
i think i phrased that wrong
a phrase will sound different in terms of "mood" or "tone" (not tone as in timbre, etc) if it has accompanying notes
i think i phrased that wrong again
whatever
Also yes the timbre of an instrument and the harmonics/partials will effect how it is perceived
but
it probably shouldn't be so different that it sounds so wrong
try a different register, play higher
check your notes again

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The+Red+Barron 23/01/22(Sun)10:35 No. 18472

It's cause you're out of tune bro

/smg/ - software minimalism general Anonymous 22/08/20(Sat)21:30 No. 18322 [Reply]

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For discussing software minimalism.
>What is computing minimalism?
https://en.wikipedia.org/wiki/Software_bloat
https://en.wikipedia.org/wiki/Unix_philosophy
https://wiki.installgentoo.com/wiki/Software_minimalism

>Why is software minimalism good?
- Fewer bugs
- Better performance
- Lower memory footprint
- Better maintainability
- Higher scalability
- Longer software lifetime
- Smaller attack surface

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Anonymous 22/12/02(Fri)22:46 No. 18394

>>18322
>- Glowniggers (Take the vax, goyslop)
Herro, Andrew Auerheimer!

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Anonymous 22/12/03(Sat)10:18 No. 18395

>>18394
Go back to /b/ you fucking retard.

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Anonymous 22/12/03(Sat)21:41 No. 18397

>>18395
>t. /kernel-1844 dev ops/
I know. I know...

Anonymous 17/08/28(Mon)20:04 No. 16539 [Reply]

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I'm hoping to return to college and do a second degree in math/a math related subject (ideally Computer Science). Unfortunately, I haven't done math in well over a decade, and when I did math previously it wasn't exactly the highest level math.

Can anyone recommend how I can best learn/re-learn/catch up to college level math and be ready and prepared?

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Anonymous 18/01/22(Mon)10:08 No. 16618

>>16617
>the discipline from mastering arithmatic when used to master secondary school math concepts
So please explain how arithmetic helps you solve quadratic equations, or systems of linear equations.
Like, if I need to find the exact roots of f(x) = -sqrt(pi) * x^2 + e*x + 10, how does it help me to know how run a multiplication algorithm by hand?

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Anonymous 18/02/09(Fri)23:58 No. 16622

>>16540
which one

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Anonymous 22/12/26(Mon)03:28 No. 18424

Do incredible math
https://www.youtube.com/watch?v=48sCx-wBs34

How dangerous are Mesa-Optimizers? Anonymous 22/10/23(Sun)19:02 No. 18371 [Reply]

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https://www.youtube.com/watch?v=bJLcIBixGj8

A Typical Elon Musk Day...but it could take place at another tech company. Mr Musk 21/05/22(Sat)08:10 No. 17563 [Reply]

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A Typical Elon Musk Day...but it could take place at another tech company.
THE TESLA >> GOOD MORNING E-MAIL THREAD:

Telsa Software Developer: Good morning team, Elon did not like that it took his model S 17 minutes to get to the car factory from his house last month. So I built him a rocket ship. It takes 10 minutes off his commute and only burns $100,000 of fuel each way. Operations, we need a voice activated rocket landing pad on the factory's roof quickly as this is an expensive project.

Telsa Operations Manager: Hello sir, this is the first I heard of this, I just spoke to my engineers, and if you land that massive rocket on the roof, they are 100% certain the entire building will collapse, killing us all. Have a great day.

Telsa Architecture Manager: Team, we architected that elevated personal super highway for Elon last month it cost 90 billion, but I will see what else we can do. We do need a few months to think about rocket landing pads before designing the most elegant thing possible otherwise it will be too easy to implement, and we can't have that.

Telsa DevOps: We have an AI electric helicopter for Elon, it will take 5 minutes off his commute and does not use any fuel as it runs on solar power. We told quality control to look at the windshield, and it is bug-free literally. Give us 2 years and we can take another minute off of his commute by tweaking the helicopter pipeline.

Telsa UX: Sorry, DevOps, behavioral science tells us Elon likes rockets because of the little red on one on his childhood lunch box.

Data Science/AI Manager: Team, our predictive models show, If the rocket lands on the roof, it will take ~5 seconds, not 6 seconds, for the building to collapse and burst into a giant ball of fire. We are 99.3347534% sure of that, accounting for wind speed and 10,000 other variables. My PHD's do worry about sample size in our AI algorithms (Ivy league Doctorates worry about everything) ... so they are asking a few rich princes they met on the dark web to donate their spare space rockets for experiments. All we have to do is send each prince $100 dollars for rocket shipping and we can improve our machine learning by a factor of 6.43.
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SamanthaFix 22/03/02(Wed)11:16 No. 18169

I think he has a big future

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Satan 22/05/02(Mon)22:35 No. 18265

You stalking Elon Musk through his devices?
And Grimes is trying to kill him?

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Anonymous 22/12/02(Fri)22:43 No. 18393

File lO0nlaQ6SV0.you - (0B )

>>17563
Strangely prophetic. And check this out! Doesn't get any more authoritarian-cultish than this.

Artificial sweeteners Anonymous 16/02/21(Sun)10:07 No. 16288 [Reply]

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Supposing a given artificial sweetener -- say, saccharine or aspartame -- was a carcinogen, what kind of cancer would it produce and by what mechanism?
If this question is too hypothetical to answer, by what mechanism would ingesting a non-toxic chemical cause cancer?

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sage sage 20/05/07(Thu)04:04 No. 16916

>>16822
> > Cancer is caused by some kind of mechanism damaging the DNA of cells on contact, producing a random mutation.
> That's like saying wounds are caused by insults.
No, it's more akin to saying wounds are caused by being clubbed.

> Cancer isn't just caused by mutagens for fucks sake, if that was the cause we would have cured cancer long ago.

Interesting conclusion, I was unaware we found a way to eliminate any possibility of mutations occurring.

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Anonymous 22/02/03(Thu)03:16 No. 18094

>>16823
Being caused by a virus isn't the same thing as being a virus.

The virus introduced mutations in the cells which - later - caused the cancer.

By inoculating against the virus you can prevent the mutations and therefore the cancer.

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Anonymous 22/02/10(Thu)20:11 No. 18105

>>18094
I don't know if it's a virus, but some people's stupidity is definitely a disease, and we need some sterilization.

Anonymous 22/07/19(Tue)13:39 No. 18306 [Reply]

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Wait, isn't simulation theory viable? Because in our own universe we could easily create a simulation by simulating natural brain inputs using wires and electronics... Fed directly into the brain...

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Shaman 22/08/22(Mon)03:50 No. 18323

EXACTLY

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Shaman 22/08/22(Mon)03:50 No. 18324

EXACTLY

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Anonymous 22/09/04(Sun)12:54 No. 18332

Do you know how many theories are viable? The question is if there is a reason to assume they are true. There is no reason to assume we live in a simulation.

OPEN IT UP — Anonymous 22/08/28(Sun)08:29 No. 18328 [Reply]

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US government to make all research it funds open access on publication
Policy will go into effect in 2026, apply to everything that gets federal money.
https://arstechnica.com/science/2022/08/us-government-to-make-all-research-it-funds-open-access-on-publication/

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Anonymous 22/09/04(Sun)10:37 No. 18331

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>>18328
will US Govt release the blueprints for Grumman jets?

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Anonymous 22/09/04(Sun)17:23 No. 18333

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Notice that all the vile shit that they're planning for the great reset won't be open access here. We'll get it way after the research on digital currency replacing the dollar and social credit to go along with the international justice system is in place.

Atmospheric absorption/scattering of sunlight Anonymous 18/07/27(Fri)04:35 No. 16685 [Reply]

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Hey, /sci/. I'm running a simulation of solar panel efficiency and I need some way to calculate energy production from the sun's position in the sky. For example, assuming a panel that is always pointer at the sun, when the sun is closer to the horizon the panel will generate less energy than when it's high in the sky.

I'm looking for something like f(x radians) = y W/m^2.

Thanks.

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Anonymous 22/03/02(Wed)12:51 No. 18172

>>18170
Sorry to hear that. Try moving to a less shitty latitude?

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SecondHand 22/03/02(Wed)15:22 No. 18174

You could try to find a climatic compromise, for example. Suppose you get solar panels power supply in summer and traditional electricity in winter. How about that? As for house darkness you can get to newmarket window replacement https://thwindowsdoors.com/newmarket-window-replacement/ and change your small old windows to multiple new ones. This will attract some extra light, I assume.

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Anonymous 22/08/23(Tue)13:32 No. 18327

Get more solar absorbent material...

X-anon45 22/07/02(Sat)10:58 No. 18289 [Reply]

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research transhumanis

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Anonymous 22/07/07(Thu)04:56 No. 18292

You mean dick choppers or idiots that want to cyber themselves IRL?

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Anonymous 22/08/16(Tue)14:18 No. 18317

>>18292
Yes.