YOU Make Your Keyboard Clack or Thock - Featuring Wind X65

#Keybored #mechanicalkeyboard YOU Make Your Keyboard Clack or Thock - Featuring Wind X65
In this hobby, many of us chase a certain type of characteristic from our boards. Whether it's a thocky or clacky sound, soft or stiff typing feel, the visual aethetics, the outcome is endless. However, out of all these, one of the most discussed and asked about feature is how to make the keyboard thock or clack. I hope that I can use a bit of science to explain how the sound is shaped, and use the new Wind X65 from Wind Studios to build a Clack and Thock build from the same keyboard.
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Links to Products Shown in this Video
Wind X65 (IN-STOCK) From Wind Studios
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Gateron Ink Black V2
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Mill-Max hot swap sockets
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Use Code "KEYBORED" to get 5% off your purchase!
ePBT Keycaps (Pink On Black)
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DROP MT3 Keycaps (Skiidata)
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[@Keybored]

Hi Everyone! Thank you for the great comments! I also received some great technical comments from great technical minds about sound speed. I mentioned that higher frequency sounds have higher speeds Vs. Low frequency sounds having lower speeds, but at the same time, sound speed is pretty much set in a given controlled medium (air, 345 m/s). There is an equation to determine speed of sound based on frequency and wavelength, and it's Speed = Frequency * Wavelength. Per said equation, it would mean that as frequency increases, so should sound. However, one fact that I didn't go deep into was that Frequency and Wavelength are actually inversely proportional. So as one increases, the other decreases. Given that information, as Frequency increases, the wavelength decreases, and the speed will pretty much stay constant. With acoustic dispersion, there is a chance that higher frequencies will travel faster than lower frequencies... but that is getting too deep into this. Sorry if anyone was confused at all by my generalization! However, the impact this has on the sound and the foam usage still remains, so thicker foam is needed to block deeper sounds!

[@honghobbies3413]

This is the best video I've seen explaining some aspects of keyboard acoustics. I'd love to have a chat to share knowledge and bounce ideas off each other to help our community understand acoustics even further.

[@bradyvilhauer4445]

You are not getting too deep into this!!! I would have read 7 more paragraphs haha but I’m studying audio for a living by passion so maybe I’m alone in that XD

[@meh6513]

Now put the clacky switches on the thocc build and thocc switch in clack build

[@julesy1x810]

I love he you went into the science of it as a beginner I understand a lot more about foam and modding because of it

[@rubenscheuer519]

I love that you explained the science behind it. But what about PE foam (PE-HD)? It seems to be less of a foam but more like a foil. I have heard that some really recommend using PE foam for their builds, but how does it really impact sound? Is it more like a inbetween of regular foam and masking tape kind of?

[@PatrickSchraner]

Please keep up the science! Nothing more satisfying than getting to learn the science behind your hobby and understanding why tings like sound behave the way they do!

[@Keybored]

:) Definitely will!

[@AndrewMcDreamy]

Yes yes yes!

[@jesseyu9738]

lol i just throw whatever i see into a keyboard and i screw around with everything untill it sounds decently ok in a office situation

[@wil-]

I fully agree :)

[@gameboyv1790]

@@jesseyu9738lol

[@MatthewEncina]

The reason I enjoy your videos is because of how objective they are, and are the most scientific in approach, compared to other channels. I especially value the comparisons. This is what makes you unique. Keep it going.

[@Keybored]

Thank you so much Matthew! Really appreciate your feedback and it'll help me find my niche and shape the channel :) will keep it up as best as I can! Love your channel!

[@nobody-bt7mu]

Matthew's into keyboards?! Nice!

[@MatthewEncina]

@@Keybored Thanks! For this video, what was super helpful was learning about thick foam, and how that kills deeper sounds. I was struggling to remove the clacky, high-pitched, sound from my Q2 build, but didn't even think that the culprit could be the thick foam between the PCB and plate (thought it was helping). I'll try this next. Thanks!

[@MatthewEncina]

@@nobody-bt7mu 👌🏽

[@lone0017]

Second this 👍

[@ashutosh026]

You explaining that clackthock and thickthin foam relationship was REALLY IMPRESSIVE. Please share such gold knowledge with us more often.

[@errvega2705]

Bro you shouldve known from 5ghz vs 2.4ghz wifi

[@geehian8477]

I loveddd the inclusion of the explanation about the foam and high/low frequency sounds. It's really cool to see how science affects keyboarding in general. I personally would like to see more of this in the future :D

[@Keybored]

:) Will do! Will keep working on that

[@rlnwvr]

@@Keybored I assume different foam material give out different sound profile. Would be great to know which material affect which frequency.

[@AndresGarcia-qk3sj]

@@rlnwvr it depends more on the density of the foam, since there are a shit ton of different materials

[@felixanthony8104]

This is how I am supposed to be researching when getting into hobbies, not just buying things and spending all the money. This channel is keeping up education as much as hobby. Great work!

[@jacobpotash8690]

Thank you so much for making this video! I recently got into the hobby and have wondered why certain boards sound a certain way. Your explanation of how sound works was easily understandable and helped me understand how I want to mod my keyboards for now on. You're a legend in this community who doesn't get enough credit. Keep up the videos!

[@Keybored]

:) Thank you so much! I'm glad the content is helpful and I'll keep it up!

[@har2252]

This is just great content for someone looking to get into the hobby but doesn’t know where to start. Please make this a series!

[@Keybored]

:) Great to hear that! I'll keep working on bringing out more content like this!

[@reillocb]

@@Keybored humbly requesting a video on lubing, I still don't really understand the motivation for the mod

[@tazzoholic]

@@Keybored if this is going to be a series, I'm waiting for the more in depth explanation on which foam material to use like PE, poron, silicone etc... like when you explain why you chose certain foams to use when making it thocky

[@snows2211]

The best kind of thock is the thock that's backed up by science.

[@XSAoRAD]

Never knew keyboards could be tuned this much, and I like that you explained how each change modifies the sound. Subbed!

[@thetechrrangerr2392]

thank you so much for this video, I recently bought a royal kludge rk68 and now they come with foam in the case and under the pcb. it kept clacking but I thought it was primarily because of my interfering cherry profile keycaps. after watching your video I removed the PCB foam, and voila ! it finally thoccs !

[@jamqc24]

What a really great in depth video! I love the scientific explanation for it! Love this man

[@Keybored]

Glad it was enjoyable! Hope it's helpful for many!

[@Ray.F]

The section about explaining scientifically in great details about how thickness of foam affects sound is definitely welcomed! For ages I have been seeing keyboard contents "guesstimating" what foam does for your keyboard, with the myth of more foam = Deep Sound, which you have debunked scientifically. That also explains why my ID67 sounds fuller and deeper if I use lesser layers of foam. Bottomline is, most of us aren't knowledgeable in the scientific side of things, so your input is really what we didn't know we needed in this hobby. Thank you and keep it up!

[@farhanfaiaze2469]

please don't stop doing the scientific explanations. it's really enjoyable to know why something acts the way it does. love your content and specially the modding videos. the creativity is just unreal in my opinion.

[@KcCake]

I LOVE the science thats hidden in the background. Not only does this allow me (and other people) to understand more about keyboards, but it also sets you apart from other youtubers! Explaining the science helps me understand and remember the mods going into my keyboard. Having a background in aerospace engineering makes you a special yter that can explain the science better than anybody else.

[@ckilburnuf]

The profile of the keycaps makes a huge difference too, I noticed you had the SA's on the thoc and cherry profile on the clack build. Learned a lot though, thanks.

[@zhieson]

#1 keyboard KZbinr imo. Another great analysis and breakdown, especially with the acoustics and foam. I have the Wind-X, and even with Gat Oil Kings, it's a bit clacky. I'm going to try some thinner foam now. Thanks again!

[@Keybored]

Hope it works out!

[@9000ryan]

Something interesting to note about the clacky builds, the all-foam build was not necessarily higher pitched. I'm hearing a lot of higher mid frequencies, hence the "clack". the no-foam build added a lot of bass and low mids, scooped the higher mids, and allowed the highest end frequencies to be more noticeable. It sounds both higher pitched and deeper at the same time. I'm also specifically referring to the alphas; the spacebar sound really skews your perception of the overall sound unless you're actively trying to ignore it. I'd love to send the alpha sounds through an EQ analyzer and see exactly what frequencies I'm hearing.

[@reillocb]

LOVE the technical breakdown, it's always so cool to hear what types of expertise fellow keeb enthusiasts have

[@LewisToh]

actually the only lecture i listened till the end

[@Keybored]

Haha thanks Lewis! Appreciate you stopping by!

[@bradyvilhauer4445]

I do some audio stuff for a living, this so far has easily been my favorite keyboard mod video hands down. Absolutely keep up the science & reasoning & strategy. This is phenomenal

[@Keybored]

Thank you so much Brady! Good to see some great technical minds gather here!

[@evilkamatis542]

give this man a degree in modding keyboards! You are the only person in this world who was able to scientifically explain how to make the sound thocky or clacky in modding your keyboard. my guys is so underrated.

[@slaycg2536]

Not only do I like hearing the science behind audio performance of keyboards from you but it's exactly why I just subscribed. Every channel demonstrates things but given there's too many factors to find your desired build just from observing others learning the underlying concepts is a big help to figuring out the process.

[@Densetsu_no_hakkuri]

Dude that foam breakdown on what creates clack and thock was amazing. I’ve been chasing a thocky sound on my boards and couldn’t ever quite get it right and now I realize it was definitely the way I was utilizing the foams

[@arpeykeys]

Absolutely love the approach to sound! A lot of mods that come about come simply from trial and error, and less so scientific approach with how sound travels through certain materials. Its great to see someone in the community explaining the certain aspects of sound in a more detailed way

[@johnkessenich]

Your content has been getting fantastic recently! I love the skits you've been doing and please continue your use of more scientific explanations. I think a lot in this hobby is extremely subjective and hard to portray, so i think having some objective measurements and explanations really helps. Keep it up and I look forward to more videos!

[@Keybored]

Thank you so much! I'll keep it up!

[@ivovass195]

Thank for bringing reason and logic to the possible mods on a keyboard thus allowing us to make an educated decision on what to do (and more importantly why) depending on our goals. Great content. The difference between the two setups on the same case is mind-blowing, personally loved the thocky one but the middle option was surprisingly pleasant as well

[@Keybored]

:) glad it was enjoyable!

[@blurryface9910]

Getting deep into the science/physics of how/why things work the way they do is the best way I learn, so I appreciate those little tid bits. This video was very helpful largely because of that. Keep it!

[@XemnasTM]

As a fellow engineer (mechanical for me), I really love all this technical info you have been incorporating into your videos lately!

[@Keybored]

:) Great to hear! Science!

[@bergenknudsen1037]

Thank you so much for explaining it this way. The fact you explained it with science but also used the same keyboard for both builds gives me hope!

[@asdasfdfgewqgrgyjh]

Keep up the detailed explanation. This kind of content is desperately needed in the keyboard community.

[@Keybored]

:) Thank you! Will keep trying to incorporate some objectivity into this hobby!

[@13Anant]

After watching dozens of videos on how to make keyboards sound a certain way (clacky, thocky, creamy, marbly) - this by far is the best and the most descriptive. Kudos dude, you're a legend!

[@JesseInSharpie]

I think learning about the science behind the hobby will help fine tune your board to what you want it to sound like. I for sure had a takeaway from this video about foam and sound and what I should do to make my next board sound great. Keep up the good work man!

[@PWzhouster]

Loved your explanation for foams and sound-modifying/amplifying materials. Would love to hear you talk about the resonance frequency of different materials as well! For the future, the more technical, the better!

[@Keybored]

:) Absolutely!

[@msjoycetan8]

Loving the technicality! ❤️ Well done.

[@Keybored]

Thank you so much!

[@korosaki13]

Really like the insight on foam. Ive seen so many smaller channel do it with what they have on hand and clearly failing to THOC. Now I know why.

[@NameyNames]

Thanks for the very interesting information! One thing though: since you didn't use the same switch for both the "clack" and the "thock" builds, for all we know, maybe the switch IS the most important for the sound? I don't think it is, and I believe what you showed us, but I think it might be interesting to test this with a "neutral" sounding switch (whatever that may be) in both build variants. :)

[@Random-oj2yr]

Switch does play a role, however even if you were to put the gateron inks into a clacks build, it would still sound clacky a little bit deeper but still clacky. I tried this on my kbd75 because I had the same doubt xd

[@jasondarien4006]

just started into keyboard hobby, and randomly hooked with your video. As gamer and also Aerospace engineer, i really like how you approach the details how sounds behave and explain it thoruoghly. Thank you for this great content!

[@MrSkullface]

Insane. I love the aerospace engineer background take. It’s refreshing to see actual objective science behind sound profiles vs guessing. Subscribed for sure.

[@hingekeebs]

I love how you're using science to explain keyboards! It gives us enthusiasts a deeper understanding of how everything works, and it's very useful!

[@Keybored]

:) Thank you!

[@Adam4]

Great video. There's definitely a lot of conflicting information regarding what affects a keyboard's sound, all of it with little to no citation. This is really helpful, I hope you can detail more stuff like this, would love one on stabiliser rattle/ticking and what actually causes it/how different fixes work.

[@Keybored]

Sounds good! I appreciate the support!

[@olehendricks6160]

As an absolute beginners guide this is a masterpiece!

[@manceirvin7068]

I’m confused tho he said that thicker foam is what reduces low frequency sounds(Thock) but then I hear him say thin foam does the same thing. I don’t understand how decreasing the foam makes it thock if he said the opposite of that.😥

[@manceirvin7068]

Also where do I buy foam if my keyboard doesn’t come with it?

[@Green-Man]

Finally glad to see some science in this hobby. I feel like a lot of mods are just "this works" without any evidence or reason so it's interesting to see why. Great video!

[@ocieward]

The quantitative science you are bringing to our hobby is fantastic. As a fellow engineer, I am very happy to have your perspective

[@Keybored]

Thank you so much! Fellow engineer!

[@Ragnorok64]

This video is fantastic! It also helps me understand why my Tofu65 build sounds the way that it does. I have StipidFish foam in it and it's my clackiest board by far.

[@Keybored]

:) Glad it helps!

[@dman1848]

I could listen to this all day. It has the same soothing sounds as raindrops hitting a tin roof to me.

[@tyosh8635]

Great informational video! When I originally got into mech keyboards, everyone kept talking about thocc. But I realized I liked the "creamy" sound better which seems to fall in line with the muted clack sound.

[@Keybored]

:) I know exactly what you're talking about... That smooth velvety sound

[@Caution40404]

Man, this video was just on point!! Up until now I thought thicker foam = more thocc. Well, this video changed it. Thank you so much!!

[@Keybored]

:) Glad to hear that! I hope it was helpful!

[@JSwag69]

did the thock build have plate foam?

[@TheFeriner]

Giving people the foundational tools to understand how things work and create new constructions that achieve their desired result faster/in a more creative way is just incredible. I have no doubt it will also inspire some future scientists in the hobby. Thank you for being such a unique channel in the keyboard space :)

[@CarlosAugS]

In love with this Thock build! Simply awesome!!

[@MichaelMorikawa]

Yes yes yes! Please more science! A video like this helps to demystify the way certain keyboards and combination of mods sound.

[@Keybored]

I hope so too! Will keep trying!

[@theunexpectedua]

The BEST video anyone would need to understand how to shape your keyboard sound. Thank you!

[@thatUtsavRatti]

Love the science-based component of this video! Please keep it up. Huge differentiator over other keyboard KZbinrs and I learn a lot about how to make my own builds and videos from yours.

[@Keybored]

Thank you! I appreciate it!

[@casiopea1979]

Bro that was impressive!! Yes more science please. Especially comparison videos between different materials, like plastic case vs aluminium case, and on vs off ones. We need more content covering all of that

[@yux8331]

I made my first build around 2 weeks ago and I was very happy with everything but the sound. I'm so glad I came across this video

[@cortjezter]

Beginner; the concise yet technical explanations really helped understand a variety of concepts that appear throughout so many other enthusiast videos; ace efficiency. Thank you!!

[@f4ls381]

I really liked the scientific explaination as to why keyboards sound the way the sound. Keep it up!

[@Keybored]

Thank you so much!

[@KJ-on6eg]

Please keep the science up. I was planning on taking classes in mechanical engineering on the side and maybe even picking up a double major in it because I wanted to know more about how sound works

[@Keybored]

:) it's a very interesting concept! I wish I could tap some musical instrument makers to get their insights

[@KEK-yw3fo]

If my professors were like you, I would have not failed some of my classes. I just found out about this channel and after watching 1-3 videos, I'm hooked. Subscribed!!!

[@mangopmc]

I love the the segments in your videos where you explain things keep doing it please

[@Keybored]

Will try my best!

[@TheKingOfHarrtz]

i have watached my share of video on keyboards but you are the first to explain foams in a way that i properly understood, great stuff

[@ResumedPausing]

I love these technical deep dives, please do more of them!

[@Keybored]

Thanks! Will do!

[@2b2c1d2]

Such a big brain in this community, thanks for being here as the engineer for all of us

[@joannetantra2810]

THIS IS SO SATISYING TO WATCH. Thank you for explaining this all step by step! Appreciate it!

[@rafidbinsadeque499]

MAN the effort and background study you put in these videos is outstanding.

[@Keybored]

:) Glad it was helpful, and if so, I'll keep trying to incorporate more!

[@liraco_mx]

Actually learned from this one video than certain other channels watching tens of them and having it seem like almost random trial and error without any idea (from them or myself) why their mods have the effect they do. Kudos!

[@dandan1364]

Love the tech details! Thin foam affecting high freq was totally counter intuitive!

[@lordpestilencetv]

that breakdown with the NRC chart was my eureka moment to understanding what types of foam to put for what sound. i don’t know why that made it click for me but thank you immensely lol

[@sl4807]

I was also playing bard in lost ark. Also thank you for sharing the science behind how foam effects the sound. I love the innovation your channel provides

[@CallMeTeci]

For the whole sound part it is also VERY important to mention that it is not just about the thickness, but also structure and especially density. Thats why there are specific materials used in Sound Absorbers (Not to confuse with Acoustic Panels) or why different materials for keycaps create such a different sound, even when they look the same. The thickness part only works if you compare the same materials with each other.

[@SotosPapas-x2d]

Well thank for all the technical reasons behind "Clack" and "thock" . From all the videos that i have watched it seems that the KEYCAPS is the the ultimate decision maker for the sound!!!!

[@IssacharLee]

Hi there, I'm fairly new to custom keyboard and also as a audiophile, I like your explanation in acoustic way, your channel is one of my favorite one.

[@Deschain19]

Wow. I have been into this mech keyboard life for a little over a year and a half and am very much a novice but you have continually expanded my knowledge with every video. You did it again with the Mill-Max hot swap sockets. Have always avoided soldering boards up to this point because of the semi-permanence of it but that is a game changer for me for and will get me into some boards I avoided because of it. The explanations of the sounds and the uses of foam, on point and excellent! Great work as always and much appreciated from this keyboard and Keybored enthusiast.

[@YES_MALLARD]

what a great breakdown. Thanks for the side by side examples... so helpful!

[@sctvfan1313]

I know this is over a year old video - but great video. Man that orange and black combo looks amazing on that keyboard...love it

[@stephenprentiss1021]

Please keep including more technical talk. It's so refreshing compared to other videos that just show off "thock" with no explanation.

[@ItzMeMarine]

I absolutely love the technical portions - please keep including them in your videos! This video was also incredibly informative and definitely has helped me to figure out how to go about my keyboard modding! (I'm a newbie to the hobby haha)

[@BanShogo]

This is how conversation goes every time with my mother, when talking about almost everything that I know a lot more than her, the difference is that she doesn't always reply with questions but sometimes with statements.

[@BrinK-s]

this.video.is.incredible. One of the best content about custom keyboards for sure ! everything is just... explained but... the right way ! I don't know ! it's just... YES !

[@SadWitchBree]

I love this video. Please, never stop including the science behind what makes keyboards tick.

[@hymayra]

thank you so much for this video! i've just started doing research on making my own keyboard which led me down a rabbit hole of different switches, then different keycaps, then lubing switches, then lubing stabilizers, then modding stabilizers, then the tape mod, and then the foam mod- and at this point i knew i loved the thocky keyboards, but saw how many people suggested the foam mod and i was planning on doing that despite wondering why those keyboards sounded much higher pitched. but thanks to this video, it helped me realize what i need to do by clearly explaining the science behind it and a night and day comparison between thock and clack while also showing what you did to get the results. i can't thank you enough!

[@underdoglucifer]

This video really changed my opinion on foam. I really enjoy technical content such as this. People do more of this type on content.

[@Skiwa]

Scott please keep the science part in the videos, it’s really informative and brings the keyboard videos to a higher level. That being said, I was looking for a way to make my aluminium Tofu sound deeper, thinking adding more foam would give me that. Thanks to your explanation I now know what to do.

[@Sir_Lanceuhlot]

Please keep up the science! I know I'm late to the game with this video but I just discovered your channel and I'm getting deeper into this hobby and your videos are a Godsend!

[@neology81]

This video was way more informative than tons of others on this topic. Thanks for staying grounded on the topic and science instead of resorting to silly antics to garner views.

[@reytampubolon6390]

this video is very smart and a huge contribution the community. I dont want to spend too much on something fun & trivial like keyboard, just to change the "sound", so i really experimented with my Keychron K2 w Gat Reds. It really is more about the materials/linings/dampenings that were stuffed in the keyboard (packaging foam, thick foam, pe foam, coins, paper-tapes) that influences the sound, with the case material, density, and thickness being the biggest influencer (like a guitar)

[@Keybored]

Yup! It's so interesting that all these different aspects have such a impact!

[@sheepgoesmoo4281]

This was by far the most informative and digestible tutorial on keyboard modding

[@chrisdotdash5154]

I have the Wind-X, it’s an incredible keyboard for a very affordable price for what you get. It’s so versatile and sounds so good even without foam! Great video, it’s very informative.

[@Keybored]

You're correct! The wind x actually sounds pretty good just completely empty :)

[@MangoGalaxyYT]

The beginning is actually so true lol, when I first got into the keyboard hobby I really thought that switches made the most difference in sound. But I am a well-informed keyboard nerd now, and I understand that switches make a subtle difference to your keyboard.

[@robingaston353]

This is the most helpful and informative keyboard video! I watch tonsssss and this is the only breakdown I’ve seen like this. More please!

[@burningdowntheworld]

Hands down one of the most informative videos on breaking into this new hobby. Thank you and keep up the great work!

[@dinophage]

Huge fan of how you incorporate technical information and as much technical reproducibility as possible to your videos. Keep it up!

[@Keybored]

:) Thanks! More coming!

[@p5eudo883]

Wow. Impressive sound profiles. That thock is incredible.

[@akwan108]

Love the science in the video. First definitive video I've heard about sound and how it's shaped. Keep up the good work

[@jb5234]

Out of all of the other videos I have found down this rabbit hole, yours is the only one that actually get's into the science of it and makes it understandable. Thank you for the info :) also, you didn't tell me what switch will get that thock thought..

[@lesliewubbel9157]

That Scientific Part you did, I loved and I subbed instantly it makes you stand out from noise and it helped my design on crina drop case I want to make THOCCY but without ruining the RBG.

[@KhoaTran-sh1do]

Please create more content like this, explaining what we need using science in a very simple way.

[@asianime12]

I am really enjoying the deeper sounds. 😊

[@lawrencetchen]

All sound travels at the same speed regardless of its frequency (assuming constant air temperature and pressure). That's why by definition frequency and wavelength are inversely proportional for the same conditions. Also, with regards to what each material (case foam, plate foam, IXPE foam, masking tape, silicone, etc.) filters, it's the frequency that gets through without being absorbed that we hear. That's the material's characteristic, and it doesn't change based on how much we use, just to which degree. With regards to the full foam clack build, those same foams still disproportionately eliminate higher frequencies, but it's rather a function of a smaller resonant volume and that resonant volume being closer to the top that we hear more reflections of the unfiltered sound. By taking out the plate and PCB foam, sound has a chance to enter the chassis and come back, and especially if there is IXPE and/or masking tape, the more times it travels back and forth the more subject it is to the filtration of higher frequencies, leaving the lower frequencies for us to hear. Also something to be said about the resonant frequency of a larger space contributing to this as well. Pretty excited to see new materials like suede, felt, cork, and more in the cases of some of these new boards!

[@Keybored]

Really good call out! You are correct on the sound speed in the constant medium... approximately 345 m/s in air. Sorry if it makes it seem like I generalized :) I referenced equation speed = frequency * wavelength, but didn't go as deep into explaining that frequency and wavelength are inversely proportional... so as frequency increases, wavelength decreases, effectively making speed the same given that the medium is held constant. I know that with acoustic dispersion, there is a tendency for higher frequencies to experience slightly increases speed, but I felt that was too deep to go into haha. But you point out a lot of more advanced details on the sound of keyboards, the materials that shape it!