Decibels as Fast As Possible 

Linus' videos are usually so clear and easy to understand. This...is not one of those cases.

might need to watch this six or seven times

This only made me more confused... Thank you Linus!!

Interesting how from 2:33 to 2:34 the volume of the voice increases.

Am I imagining something, but did the volume of Linus go up as the video progressed?

I think you should do a series called 'as slow as possible', so I can understand.

I need to watch this video multiple times because I don't have a damn clue about what Linus said.

You should do an episode on the difference between amps, watts, and volts.

"Great video Linus! Now we just have to record again in English!" -Linus' Director

wait, what?

This is very difficult explanation... even though I'm a science PhD student. Yet again, it's great stuff!

Can you slow down and explain more with words or have the definitions in the video appear on the green screen!

I dont normally watch these but this one i appreciate. They are more confusing than i initially thought

I'm glad he likes Monstercat

5:05 Oh please, Linus. You won't get taller anymore

This is the perfect time to say "Thank You Linus" - HIMYM Quote!

Did the lens change or something like that? Looks more crisp, i think.

See, that "please share" worked. I shared! Because sharing is caring. Ok let's stop the emotion overflow here. Great videos guys :-)

Hey can u do a video about CPU limit, becouse when i am running bf4 whit a gtx 770 and a fx8350, i should normaly get 60fps+, but my gpu ussage and power goes down to 50% or less and i have only 15fps.....

That went right over my head...

Thanks, you simplified my understanding of decibels.

Like around the three minute mark the audio level increases lol good one Linus!

Lol stun grenades were on the wiki chart. Just in case, you know, when I go stun grenade shopping.

it would be awesome if you guys would explain what the decibels mean on antennas and such

nicely done, gradually increasing the volume throughout the video

I have a quad core i7 and a G1 sniper5 motherboard. Should I consider upgrading to the new 5th gen parts? Like your content BTW.

I usually just say something is loud or quiet. Also nice video quality this time, not to dig but when Linus was wearing a similar shirt before it had a lot of noise (haha no pun intended). Keep it up dudes.

I want to know what 85db sounds like on my headphones, but the comparisons online don't help. I am thinking of getting a SPL meter.

Nice work as always

Tech Quickie on Form.Factors of Motherboards

Thanks for this. I'm familiar with electrical gains, but not aural stuff. Now that I've been doing audio editing stuff, I've been kinda lost.

I feel that this was your most advanced AFAP yet :) could you do a benchmark comparison of x99 vs z97 (with the same GPU). test games, video encoding, and file compression (probably not best as a fast as possible, but i think it would still be a good video)

This was the first episode I got new information, and it's fanfuckingtastic for learning new concepts and facts. Thanks for this Linus group!

is there anything techquickie doesnt cover?? every time i search theres not only a good google hit but a really good video explaining it

Pls do a video on either : 1.Watts,Amperes,Volts etc 2.IOPS for storage benchmarks

Can't believe you played my favourite artist :')

Why are the decibel numbers displayed on my home theater amp mostly always negative when I increase the volume, whyyyy?? It only goes above 0 when it's crazy loud.

Thumbs up for mentioning the correct inventor of the telephone Linus!

Architecture student here: learned all this stuff in university, had do calculate the song frequencies, reflections and everything. Can't remember a thing now. Really... NOTHING.

linus, i know that you not always can record the whole video at once, en multiple setups need sometimes. but try next to generalize the sound lvl/volume

ACTUALLY NEEDED THIS FOR MY HOMEWORK, THX BRO.

Dunno if any Headphone wearers noticed but halfway through he video the volume just CRANKS up as he talks about the doubling of pressure... That sticks with you if nothing else did...

So which case fan is louder ? A 25.5 dBA/1200 RPM/66.4 CFM fan, a1000 +/- 10% RPM/ 66 CFM/18.5 dBA fan, or a 1000+/-10% RPM /47.7+/-10% CFM /

Excellent Tech Quickie!

I came here to learn something new and managed to find that I know even less than I thought I did which, in its own way is something new that I learned..

I CAN'T HEAR YOU OVER THE SOUND OF MY TEN YEAR OLD FANS. THIS ISN'T EVEN A JOKE.

So when i set my volume to -6db does that mean my stereo is sucking sound out of the air?

Great lesson!

What about negative decibels?

Can you please make a video about headphones specs?

didn't get what linus was trying to explain, please share links related to the topic!!

You have cranked up the volume :D

That’s what I always thought too. Actually had to wrap my head around this while working soundboards and recording.. basically it seems like people were slacking at work for a year and boss man said what have you been doing? Me? Oh I’ve come up with a way to express sound levels that is so confusing people will accept it rather than debunk it.

Can you guys make a video explaining all the socket types and chipsets and whatever? Like what does z79, 1155 and sandy bridge mean.

Not quite up to typical Linus Tech Tips standards. I recommend a redo after an afternoon of research. You don't have to mention Fletcher-Munson curves, DBA vs DBB or DBC, or common reference points of how loud typical things are. But maybe consider reiterating the overall delivery of understanding, and how to encapsulate that better. Mention that it's relative to background noise which I feel is crucial, even if Fletcher-Munson curves are not, Sones may be worth mentioning as well. If you want help writing a script I am acoustically obsessed, and rather poetic at times :P Love the channel!

I noticed the volume of this video increasing slightly.

Most videos are intended to show the RU-vidr’s ability of talking fast, none stop and move from topic to topic , so the viewer cannot really follow and digest. And at the end, they feel good that they have knowledge that’s not understandable by average viewer. As he well said at the end: EGO!

What happens if you're so loud you reach the uppermost limit of the decibel scale? Does that make you a bell end?

Huh, I always just thought the numbers were linearly organized, so that it was simply larger numbers are louder, lower are quieter. Then again I shouldn't be surprised after shenanigans like contrast ratio or using megabits instead of megabytes to advertise internet speed just cause you can show bigger numbers that way...

Transfer of information is the main reason why the dB measurement is used. Since music(sound) is transfer of information from one place to another, the dB are used as a measurement. The trick is as Linus said, the way our ears can receive that information, regardless of what the output was :) To add a bit more confusion to all of this, lets say a source is emitting 30mW (miliwats) of "power" and that is being transferred to a cable with 3dB loss(divided by 2) then it comes to a speaker that amplifies it by 10dB(multiplied by 10), in the end we have 30mW / 2 *10 =150mW or around 21.8 dB

3:31 but that's the way speakers should be described. In order to establish dominance in your puny human mind.

could you do a "as fast as possible" on how amps and dacs work please?

These videos are great!

Wait I’m trying to get a loud blue tooth speaker would what would I look at to see the loudest speaker

I would really appreciate a video addressing PCIe SSD vs. M.2 SSD. PROS & CONS! Please. Because I'm soooo confused in either should I get for my Riggggggggg! I don't have the money for a plexador and there are lot of M.2 SSD's. And I don't know what to do.

Link the wiki page in description!

This help a lot thanks

This is the first techquickie that I didnt understand completely in first play,.

Can you do a video about LCD screens and Plasma screens/ displays?

SOUNDS like we need a new standardized system.

2:16 so what you’re telling me is this and I quote. 1(DB) Is 0.66X louder than 0(DB) & That 2(DB) Is 1.32X louder than 0(DB) & That 3(DB) Is 2X louder than 0(DB) & That 4(DB) Is 2.64X louder than 0(DB) & That 5(DB) Is 3.3X louder than 0(DB) & That 6(DB) Is 3.96X louder than 0(DB) & That 7(DB) Is 4.62X louder than 0(DB) & That 8(DB) Is 5.28X louder than 0(DB) & That 9(DB) Is 5.94X louder than 0(DB) & That 10(DB) Is 6.6X louder than 0(DB). But that doesn’t make sense because 10(DB) is about 10 times louder than 0(DB) so it makes no sense here’s what I think would make more sense and I quote. 1(DB) Is 1X louder than 0(DB) & That 2(DB) Is 2X louder than 0(DB) & That 3(DB) Is 3X louder than 0(DB) & That 4(DB) Is 4X louder than 0(DB) & That 5(DB) Is 5X louder than 0(DB) & That 6(DB) Is 6X louder than 0(DB) & That 7(DB) Is 7X louder than 0(DB) & That 8(DB) Is 8X louder than 0(DB) & That 9(DB) Is 9X louder than 0(DB) & That 10(DB) Is 10X louder than 0(DB). But you’re still a good RU-vidr though so no hard feelings.

Why do the controls on many amplifiers go from a negative number of decibels up to zero, with zero being the highest and loudest?

What happens to the video at 2:07? It's like a sketch effect was applied or something. Awesome video, informative in a short amount of time.

I'll just slap a fan controller in my rig and call it a day with whatever high speed fan is on sale.

please have consistent sound volume throughout the entirety of the video. thanks.

meanwhile this guy didn't even pass calculus 1, i wouldn't watch videos with math with linus

3:01 Linus : alright Linus i get it now.. Me : yeah... i'm not sure about that

There is another scale for sound that takes the human hearing into account. It's called sone. 0 Sone is the hearing limit. 1 Sone is normal talking. This scales is sometimes used by CPU/GPU-fan manufacturers. Anything below 0,5 sone is basically inaudible

At one point of this video you remembered me about an air host.

"...and then my ego is like baahhh and then i get huge like this..."

Is the video getting louder over time, or are my ears broken?

dB has no units, Linus. dB is a ration between two values of the same unit. Let's get an example: 10(log10(1000000(n/m²)/10(n/m²))). See the fraction? anything that's the same on the top and bottom can be substituted by 1 (we usually cut them out since anything*1=anything). So, the fraction (apple/apple)=1 and, also (n/m²)/(n/m²)=1. Going back, then, to: 10(log10(1000000(n/m²)/10(n/m²)))=10(log10(100000)=10*5=50. Hence, 1+E5 n/m² is +50dB of 1+E1 n/m² - but the dB there is no unit, it's just a way to inform that the number comes from a peculiar way of describing ratios. Another thing: why dB? For many reasons and one of them is us, human beings. See, our sensory system is logarithmic and, therefore, it turns exponentials into straight lines. If I go from 10dB to 20dB I perceive the audio intensity to have doubled even though the sound pressure has increased by 8 fold. Remember when we were children and people told us we could do anything? Well ... they were either ignorant about live or just plain liars. We can't make thermodynamic machines more efficient than the Carnot cycle, we can't travel faster than the speed of light and, this is important, we can't explain dB on a short video. To be honest, we might, some day, be able to brake the Carnot and speed of light limits .... but we'll never be able to explain dB on a short video. Here is a less short video about it and why sometimes dB is 10*Log and other times it's 20*Log. This channel is amazing and the guy who makes the videos so thoughtful he leaves a link to the notes on the video. ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-1mulRI-EZ80.html Just to shake your curiosity: what the hell is 0dB? Well ... Log is "to what number I should power the base (10, in this case) so the result is 1?" ... well, any number to the power 0 is 1. 0dB means both values are the same.

I use an app on play store called Sound Meter, it helps measure the ambience.

NES Zapper and modern gaming guns as Fast As Possible please!

make a video on internet speeds and the confusioon of mbps and MB/s

I'm a studio engineer, and this shit still boggles my brain! O_o

I will share don’t you worry , years of sharing at this point 😂

Musician here. It took me a month to understand dbfs Just to see how loud should I upload videos to RU-vid because normilization

Techquickie 4:15 "More then one hundred, if I could express that on my fingers i would..." But you can Linus! Binary!

Lol when you displayed the graph, what on earth caused you to display Li(x) instead of ln(x)?

whats up with the sound and video? 0.o it gets al funky several times.... love the show yous :) keep it up.

I was confident earlier.... More confused

the ending is the best part of the video

Linus can you try PCI Express lanes: The difference between PCIe x1 x2 x4 x8 and x16?

the ending to this was hilarious hahahahahaha

This episode gets progressively louder

Props for mentioning Antonio Meucci!!

educating people since years!!!

I don't know if anyone else has noticed this, but seen a lot of charts like the one shown from Wikipedia and realized that they actually give no context whatsoever. None of the referenced are even remotely solid themselves. I can tell you from personal experience that some jack-hammers are much louder than some non-electric chainsaws. By the way, the perceived loudness of a chainsaw should be louder because of it's frequency. I also used to live about 40 feet from a railroad track. some passenger trains breezed by with I nice light whooshing sound, others shook everything in the house. What is the "home level" of a TV? When I visit my parents, they seem to think it's loud enough to hear in every room on the house. That's somewhat due to how loud they keep it and somewhat due to the acoustics of the house, another factor that isn't accounted for at all in these charts. If you ask 20 people what "home level" for a TV is, you'll get 20 different answers. At least this one has distances for most of the very subjective sound references. I like how one that doesn't is a stun grenade. Yeah, it's loud, but ask the how loud is it if you're the sender and how loud is it if you're the receiver. Then you've still got no real information because you have no idea how close either party was. If you established the distance and we know how much pressure a stun grenade has (assuming that value is the same with all stun grenades) then you still have to explain what that amount of pressure sounds like. I have a sneaking suspicion that it's anywhere between 200 and 2000 times as loud as a TV (set at a home level) at one meter. I challenge anyone to provide a single reference from this chart that can actually reasonably be used as a reference for how loud a noise is. At best, this information came from somebody taking averages of the huge range of sounds generated from these objects, already making it completely useless as a reference. I'm guessing it's more along the lines of somebody just saying, "I think this is louder than this", until they got to something that they remembered made their head hurt and then remembering a couple documentaries the watched that said how many decimals some stuff like stun grenades and jet-engines were (747 or fighter jet-engine, by the way?). I'll give that chart one thing; it really looks like it's saying something.

What about Sone? That's my trusted unit of sound! :)