 Selamat pagi, semua. Saya iyan. Hari ini saya akan mempunyai akustik untuk rumah. Dan juga untuk membuat kebaikan terbaik di luar hifi di studio di rumah. Jadi banyak yang kita fokuskan pada rumah adalah mengembangkan perkara-perkembangan, perkara-perkembangan, dan juga akustik. Sebenarnya, perkara-perkembangan sebenarnya sangat besar. Saya memahami bahawa apabila saya membutuhkan perut, saya berfikir saya dapat menghubungi semua perkara-perkembangan hari ini. Tapi saya rasa saya mungkin perlu menghubungi beberapa perkara-perkembangan. Dan memberikan lebih banyak masa untuk anda menyebabkan pertanyaan. Bukankah kita akan mengetahui? Dan mari kita mulakan dengan beberapa perkara-perkembangan. Saya ada 15 tahun yang telah memperkenalkan bahagian dan musik. Saya bermula melakukannya apabila saya 14 tahun dan saya mempunyai kerja profesional yang pertama saya telah memperkenalkan bahagian. Dan saya membuat studio pertama saya apabila saya 21 tahun. Jadi daripada itu, saya memperkenalkan dan membantu orang-orang untuk memperkenalkan pekerja rumah mereka atau membuat studio rumah mereka, atau studio keperluan profesional. Dan walaupun sekarang, saya mempunyai penerbangan dan sinimah. Jadi, saya juga mempunyai penerbangan dan membuat perkenalanan. Saya juga membuat perkenalanan dan membuat perkenalanan. Saya juga memasak musik di US. Okey, pertama kita akan mulakan dengan beberapa perkara-perkembangan. Kita perlu menikmati beberapa perkara-perkembangan ini. Kamu dapat melihat perkara-perkembangan ini. Dan ini seperti perkara-perkembangan yang lebih baik. Semua orang akan mengatakan perkara-perkembangan yang baik. Sebenarnya, dalam kes ini... Okey, dalam perkara-perkembangan normal, jika saya memperkenalkan beberapa perkara-perkembangan seperti itu, saya akan mengatakan, saya harus mendengar dan menarikannya untuk melihat jika perkara-perkembangan lebih baik. Tetapi, dalam kes ini, perkara-perkembangan ini adalah penerbangan yang terkenal di UK di Royal Albert Hall. Ia dipanggil untuk penerbangan yang baik. Tetapi, kerana penerbangan yang baik, anda fikir bahawa itu mempunyai penerbangan yang baik. Dan keadaan ini, nampaknya art gallery, art gallery mempunyai penerbangan yang lebih teruk. Selain itu, anda akan bercakap. Dan perkara-perkembangan ini, anda dapat mendengar semua perkara-perkembangan dan sebagainya. Tetapi, dalam kes ini, saya tidak akan memilih perkara-perkembangan ini. Ia adalah penerbangan yang terkenal dengan aplastik aplastik. Jadi, sebenarnya, ia sudah telah dilakukan dengan aplastik aplastik dan ia tidak dapat memiliki banyak kepercayaan. Jadi, ini mungkin akan menjadi lebih baik aplastik. Jadi, apa yang saya cuba katakan di sini adalah, apakah ia berbicara yang baik atau tidak, apakah aplastik yang lebih baik, tidak ada apa-apa yang berlaku dengan perlihatan. Tidak ada apa-apa yang berlaku dengan material. Ia adalah cara anda memdesainya. Ia adalah cara anda sebenarnya mengalakannya untuk menggunakan wujud bersama dengan material lain. Macam mana anda membalaskan wujud yang berlaku di dalam bilik. Ia adalah lebih penting daripada wujud sendiri. Jadi, ini adalah perkara pertama yang saya mahu berlaku dengan baik. Kerana ini adalah penerbangan yang terkenal. Biasanya anda melihat wujud. Tetapi, itu mungkin tidak yang benar. Okey. Pertama, saya mahu berlaku dengan perkara pertama untuk perlihatan wujud. Perlihatan wujud sebenarnya tidak ada, tetapi mungkin pada masa depan, seseorang boleh berlaku dengan baik. Ia memang berlaku dengan perlihatan wujud. Tetapi sekarang, ia tidak berlaku dengan benar. Tidak ada apa-apa yang berlaku dengan perlihatan wujud. Perlihatan wujud tidak seperti perlihatan wujud. Anda melakukan perlihatan wujud di dalam bilik, kemudian wujud akan berlaku dengan bilik lain. Perlihatan wujud, tidak apalah jika anda berlaku dengan berlaku dengan perlihatan wujud, ia tetap berlaku dengan perlihatan wujud. Jadi ia tidak berlaku dengan benar. Ia hanya menggunakan perlihatan wujud, seperti perlihatan wujud. Untuk menulis satu contoh. Ia adalah studio Galaxy, Belgium. Biasanya menggunakan perlihatan wujud di dalam bilik. Berlaku dengan perlihatan wujud di sisi penerbangan. Berlaku dengan perlihatan wujud di dalam bilik tidak lebih daripada 60 cm dan ia sangat berlaku. Sebenarnya, saya tidak tahu bagaimana mereka membuat. Ia mempunyai diri sendiri. Sudah tentu, ia mungkin mempunyai seluruh seluruh seluruh, tetapi perjalanan dan segala-galanya akan terlalu tinggi. Sehingga di sini, kita dapat melihat hanya 100.7 deksipus. Deksipus adalah sebuah suara. Jika anda ingin berfikir, kita boleh berfikir 1.95. Deksipus, sebaiknya anda perlu tahu, ia adalah sebuah suara. Jadi, 100 deksipus berfikir, bermakna jika saya mempunyai suara 100 deksipus di situ, sebuah suara sebaiknya tidak ada di sini. Tapi jika saya mempunyai sesuatu seperti sebuah suara sebaiknya, sebaiknya sebaiknya tidak ada di sini. Jika anda masih di sini, 100 deksipus di situ. Jadi ia tidak benar-benar sebaiknya. Ini adalah konsep lain yang saya ingin memberikan. Jika anda tidak memperkenalkan suara, dan bahkan pesanan dunia, jika anda berada di api, mungkin ada sebuah besar pistol di sana. Dan sebenarnya, anda dapat berfikir di sini. Sebelum kita bincangkan tentang transmisi suara, ada beberapa ketuaan yang berbeza. Kedua ketuaan yang basic, yang kita biasanya berkaitan dengan suara sebaiknya, membawa keadaan. Seperti yang saya cakap, suara berjalan ke kawasan keadaan adalah periuk telat, jadi ini adalah periuk telat, periuk telat. Salah yang lain, ia adalah periuk telat, periuk telat, maksudnya itu membutuhkan negara terlalu keras. Contohnya, anda disenging di bahagian dan anda bergurau. Jadi itu adalah periuk telat, biasanya lebih dari periuk telat. Tapi selain itu, periuk telat dapat menjadi periuk telat dan periuk telat dengan periuk telat. Ini adalah bahan yang yang perlu diperlihatkan. Itu kita lihat bagaimana kita menerima atau mempunyai standard untuk istimewa. Hari ini saya hanya akan menutupi, saya tidak akan mendapat banyak timbulan pada hari ini Tetapi untuk anda tahu bahawa yang terkenal yang digunakan dalam perjalanan Selain ini, di U.S. mereka menggunakan SDC, atau Sound Transmission Class Ini adalah kesejahteraan kesejahteraan, jadi jika anda katakan 40 SDC Maksudnya ia berada di seluruh kesejahteraan Apabila anda mempunyai kesejahteraan kesejahteraan Tetapi ia tidak bermaksud bahawa itu ada 40 SDC Kerana kerana ia adalah kerana perhatian Jadi beberapa kebebasan berada di seluruh kesejahteraan Kerana kebebasan, saya bermaksud kebebasan adalah kebebasan yang kurang Seperti contohnya, untuk anda mendengar kebebasan, kerana anda selalu berada di seluruh kesejahteraan Kebebasan yang tinggi, contohnya, sesuatu yang tinggi Seperti kebebasan yang tinggi, atau sesuatu yang tinggi Jadi perkara yang berbeza adalah berbeda dengan kebebasan yang berbeda Jadi, jika seseorang berada di seluruh kesejahteraan dan berkata, Oh, saya membuangkan SDC 40W dan saya dapat menarikannya Dan dia hanya mengambil suatu meter, dan hanya membuat kebebasan Dan hanya membuat kebebasan Dan dia berkata, Oh, saya telah mencapai SDC 40W, itu tidak mungkin Dia sebenarnya perlu kembali dan meletakkan graf Untuk mencari sebuah SDC Jadi perkara yang lain yang kita membuat kebebasan Biasanya untuk kebebasan Biasanya untuk kebebasan kebebasan, IIC Dan ini juga sebuah SDC Eurobis yang berkata, SDC 40W dan SDC 40W Tetapi, ada lebih banyak SDC yang ini Jadi saya tidak akan membuat kebebasan seperti ini Ini adalah sebuah SDC yang anda akan mencari Jika anda boleh membuat kebebasan dan anda dapat Untuk sebuah kebebasan, sebuah kebebasan Anda mahu mereka membuat untuk anda Mereka membuat kebebasan Biasanya mereka akan datang dengan kebebasan seperti ini Jadi anda dapat menghubungi kebebasan dengan kebebasan Untuk kebebasan, itu bermakna Biasanya ada sebuah architek yang saya telah menerima Yang berkata, SDC 40W mempunyai Sebuah kebebasan sebenarnya Jadi saya rasa Ini adalah kebebasan yang besar Jadi saya akan membuat kebebasan seperti ini Kerana tidak ada apa-apa Ia sempurna tidak mungkin Saya akan kata ia mungkin Tetapi ia akan mengambil lebih banyak kebebasan Untuk membuat kebebasan yang sama dengan kebebasan Ia sempurna membuat kebebasan Sebuah kebebasan yang lain Macam mana? Untuk kebebasan yang itu Jadi kebebasan itu memang tidak Sebuah kebebasan yang perlu dipercayai Ia ada perbezaan 5-8 Dibuat dengan kebebasan Dan kebebasan itu adalah kebebasan ideal Mereka mempunyai segalanya Kebebasan itu mempunyai 12 kebebasan Jadi ia adalah kebebasan ideal Jadi mereka dapat membuat kebebasan SDC Tetapi dalam perasaan Apabila anda membuat kebebasan di rumah anda Ia pasti sangat rendah daripada kebebasan Kadang-kadang saya melihat Apabila kita membuat kebebasan normal Mereka selalu berkata BcSA yang tersebut Memang mempunyai kebebasan di rumah kita Dan tersebut Sebenarnya, untuk kebebasan kawasan Mungkin 42-45 mungkin Di sekitar itu Tetapi Cara yang telah dihentikan Dan cara yang telah dipercayai Mungkin tidak dapat mencapai 42-45 Tidak, tidak Sudah tentu tidak Sebenarnya, saya akan berkata Biasanya tidak akan mencapai 42-45 Dan tidak ada kebebasan kawasan BCA untuk itu sekarang Ya, dengan lebih Biasanya HDB membuat sesuatu Dan semua orang menikmati Jadi kontrakter semua akan menikmati Dan semua orang juga akan menikmati Mungkin kerana kebebasan kebenaran Mungkin mereka mungkin mempunyai kebebasan yang berbeda Tetapi Biasanya Biasanya kebebasan tersebut Dengan apa yang saya lihat Dan Jadi ini perlu dikenal Sebab itu, jika anda mempunyai Bagaimana jika anda mempunyai Biasanya anda mempercayai Untuk masalah Seperti Di antara dua masalah, anda dapat mendengar Bercakap dengan orang lain Sebenarnya Ya Ini adalah masalah yang terkenal Di Singapore Kerana tidak ada sebuah kawasan sebenar Untuk sebuah kawasan Dan One reason why I'm here Talk this tonight Is actually to have more awareness Of such a reference And Because the government side, I think it will take a while To actually implement all this And by the time your house will be built So Let's look at what we mean By the different levels STC for example So, okay For It means that a subjective description of effectiveness is a medium loud speech is clearly audible, occasional words understood. So this means that if you speak at a medium loud level, your neighbour should be able to hear you but cannot understand it totally. Maybe some words catch one or two words and this is between 42 and 45. And this assumes that the background noise is relatively quite quiet. So later I'll explain about the background noise but now we'll take it as this. So in order to reach, for example, you want to be able to play your hard-home theatre system super loud and neighbours will not disturb your neighbours. You need to reach at least 75 sdc. 65 sdc is usually quite good but it also depends on how loud you play your hard-home theatre. So this is important too. And one thing to note, which I forgot to put in the slides, was that sdc only measures 125 sdc and a berth, which means that it doesn't take into consideration the low frequencies I mentioned just not like the subwoofers, or the home theatre explosions and for example, if you like some gaming kind of music and all that, it's a lot of clothes. So it doesn't take that into consideration in the measure of sdc. So it means that, even if you have a super high sdc but your low frequency might not be well taken care of. So usually we need to get, when you need to control low frequencies you really need to get an expert in it. So usually most contractors can't really perform at this level. This is another myth that I want to bastard. I realise just a lot of, in Singapore, the acoustic industry is very, you know, in the hip-hop stage we did not really, we started long time ago but it's getting more popular nowadays we want more people being aware of it. But there's a lot of misinformation in the industry based on some contractor here say, internet, some article. We must be always aware that the fact is more important because most of all this are just here say and could be an opinion, could be just trying to sell you a product. So they always say that all you got you must use this material to achieve your sample ring for example. Actually that statement is only true to maybe half. In certain situations to many certain materials because you want a dinner, wall but you still want to achieve a high STC, certain materials you need to use. But other than that in most situations if you have no limit of space or no limit of actually most material, any material, common building materials can achieve very good STC usually. So to prove this look at this four wall building so you can see let me explain the strips you see dry wall these are the walls that most of your homes are built with inside of a core insulation which is usually fibreglass wrong move or some sort of absorbent material, fibreglass material. So and this box here is just a structure so it could be wouldn't suffice but in Singapore we use metal stacks. So you can see all this use the same number of materials but the STC are different because the way it's been designed the design is more important than actually the materials themselves. Again it's not about the materials. So you can see this wall here it has what we call triple leaf quadruple leaf so you can look that up and i will explain and this is a double leaf and this one is triple leaf so usually we aim for a double leaf in the construction of um usually that is the most effective in terms of being able to achieve the maximum effectiveness within the space plus the materials. So Ya you need to understand that sometimes certain contractor tell you so you have a tarik wall for example in your home it will not do enough can i add so some contractor say no problem but the problem is he didn't remove one side of the wall and he just add on to the wall and it has this effect so it has added a lower STC than what it should be so by right or before this materials you can achieve this but instead this is achieve now the wall so this is dry wall this is insulation cleaning and this is a structure so it's a top view top view is easier to see yes this is a double wall for the rich STC 60 but most of our homes are constructed in single walls so at most i think in our homes we can achieve is about 50 plus STC for single wall we need to do a double wall which takes up space and in the homes nowadays with the space so small but sometimes you might want because if you're doing a home studio or you plan to make your home theater loud so you probably need a double wall but in this situation it proves that actually the materials doesn't doesn't really matter not that really matters but it's only part of the solution so i often hear this the system we install this wall for example Yamaha school we install this wall it has been tried and tested we have lab test report as well as i'll let you sure no problem most of the time there's problem and usually they call me in to resolve which sounds like i get very frustrated because it shouldn't be that way in the first place okay this picture not proof that it shows the sneaky sound sound can go through so every site is different so every room is different the size of the room the volume of the room whether there is an air con dark sharing between the two rooms whether there is a common shared space above for wiring and lighting whether there are windows so what this shows for example the first part is the direct path so this path goes from a sound source for example if a very loud speaker we play back it goes through the wall to the other side so this will be reduced by the wall the direct transmission then we have other things what we call flanking transmissions flanking transmissions actually go through usually it's going through shared structural structure flooring for example ceiling usually they will give you a shared flooring most of the time that's the case and you would have problems transferring between the floor because as you transmit through this hard structure so no matter how good your wall you're still going through unless you take care if you couple the floor then you might remove it it depends on design so this is all the soundproofing and also the third one i want to mention if you have a shared ducted account sometimes certain private homes can ducted accounts that are shared and this actually needs to take into consideration because the sound can actually travel through that duct if there's no insulation between the exhaust and all that you will definitely transmit so the other home can hear i've done so much soundproofing but i still can hear sometimes it's through the aircon system and usually you need to especially design doors windows and doors common witnesses windows currently you can see a lot of contractors just say oh i put double things glass that's good enough but actually in true fact the double things unit can only achieve STC maybe 28 and in the field probably lower so it's not a very good i would say that isolation material but glass can be spec to be high sound isolation but the person speccing must know how to play around with the air gap and the type of glass and even that so those are more specialized skills which i won't go into detail but you need to look out for your windows and doors so you need sometimes in homes we have this problem whereby we hear a lot of sound from the corridor yeah this is a common thing usually you solve the door usually becomes quite acceptable but the doors are very expensive in industry standard for soundproof door let's say a wooden one a wooden one can probably let's say STC maybe 40 above usually cost at least 3k plus above one door so this is standard and if you want to go even higher you need method doors at least in the market cheapest you can find is probably without fire rating is probably about 8k for one door 8k for one door so doors are very expensive but there are many ways to get around the door but you need to give up space which i won't go into detail but in most of the time in homes you wouldn't want to give up space because you have a big room not that big so you don't want to give up room we can do double door system but both need to buy acoustic seals acoustic seals so you see those rubber thing around door sometimes you can see acoustic doors those are seals to prevent the sound from escaping the gaps between the door so you might say that why do i need to take care of this small gap just a small gap a small gap sometimes can leak as much as 10 decibel or more 15 even sometimes of sound through that little gap let's say 10mm gap but around 15 decibel 10mm gap so it's a we soundproofing is something you really need to be super OCD because you need to take care of every single detail so not only looking at the build the design itself you need to look at the actual side if you are actually doing the soundproofing you need to understand where are the weaknesses and all that so for this part i will conclude and later if you have any questions next i will cover is background noise so for example if i am in a very quiet environment when i first started doing soundproofing i wanted to do very high isolation so after i achieved the high isolation i realised some of my customers are not happy the reason is because the room has become so quiet that when they sit inside the room they close the door and they can hear just a little bit it becomes like they are oversensitive because there is lack of noise for example if i were to play now i start to speak maybe start to hear it becomes less clear it's the same thing so let's say in a quiet environment you can hear me very clearly but in a noisy environment you need to make it less needed to have high STC requirements because the noise is not as how to say that it will influence a subjective hearing so this is important so when the room is quiet they will be very sensitive but in some situations for example like recording studio you need to be quiet because recording studio you need to record the sound as pure as possible without any noise so in that situation then we need to actually control the noise in a different way we really need to plan out how the studio stay out so that they won't get disturbed by any small little noise that get lead to the record so that one is a design issue so i won't go too deep and background noise but this is another variance NSC which quite common commonly used in the industry usually they use to measure like a room for example like this they will switch on the aircon they will switch on the projector any other AV equipment they will switch it on but without playing anything just then they record the noise and they will crop it against a graph again the graph somewhere but it's against a graph so as long as the background noise fall below that graph it is within that particular NSC so NSC30 as a particular graph with all your noise below it once frequency exceeds the standard curve then you will have to move to the next level for example so this is a type of measurement NSC is USNR so this is how to measure noise ok so let's look at case study which i think can better relate i can hear my neighbour walking above me this is the most common complaint we get a lot of calls such things but there is bad news for this the good news is by right i feel this is my personal opinion this is the developers responsibility to ensure that this don't happen walking just normal walking you can hear is ridiculous we are not even talking about standard but this is like and i see it even in the most expensive auction condos this happens and i say this is ridiculous i think you should just complain to the developer and ask them to resolve this because it shouldn't be you paying one thing is very expensive one thing is almost impossible to isolate this sound there is two reasons why one reason is because the neighbour is on top so he is already living that and you want to let's say the best solution is always to treat the source so the source is the floor above to treat it above but it is still possible but the problem is because the floor is connected to the building structures so even if we do the ceiling the sound will come down through your walls so don't tell me you need to do your whole room and lose a lot of room and all that i feel this is resumming that the developers should resolve and be responsible for this one i think is good that more people become aware most people don't know they just accept it i have another case whereby a condo is also a condo right next to a major road the developer actually has done some due diligence but they forgot one thing because they designed it nice so they want two pieces of glass coming this way and because the joint of the glass is not done properly the noise in the morning is very loud from the traffic so the person can't see when they ask me why i measure what is way above even what is acceptable so i ask them to just go straight to the developer to resolve this because there is no point for me to recommend a solution for example adding another set of windows which limits their space and all that and this is all the same thing even if i want to do the ceiling it wouldn't resolve the problem 100% only 50% i can resolve whatever sound that is coming through the ceiling but i cannot resolve any sound that actually spread through the structure and because most of the footsteps this based on scientific testing are actually very low frequency actually sub-based frequencies that are even harder to treat than normal frequency so it is actually very tricky so this problem actually like this my advice is to move out when the fighters after the fighters i have one case which this next one the water pipe running next to the bed this is a design flaw again it happens in most of the condominium so the architect may not be the architect because sometimes the architect designs and the engineer takes care of the piping and they run it through right next to the bed and this problem was quite worth it because what happened was the holes between the two pipes the two levels were misalign so the pipe had an angle like this so what happened was it keeps leaking it keeps leaking and it's like she's going crazy so besides that they last resort upon they use a rather it can resort upon actually concrete feel the bottom with an L-shape kind of pipe so this shape so now the misalignment no longer of course because you have an L-shape but now you have another problem the sound will hit the pipe and it will be super loud this one we resolved it but my client was so frustrated about this that she wanted no noise even on the toilet side so imagine this pipe is in between the toilet and the bedroom so she wants no noise even in the toilet side but I told her it can't be possible because of that concrete feel it causes the structural transmission thing that I covered earlier but the sound actually travels through the structure no matter what you do doesn't work but what I can do for her is to isolate the sound on the bedroom side as much as I could I did decoupling of the wall but she lost some floor space which was quite a thick wall but we resolved this but this again the developer took responsibility for the cost which I think and next one is home data, gaming, karaoke sound system is driving me nuts this one is also another complaint usually in this situation I would say go to your neighbour to talk first because okay to resolve this you need to spend a lot of money and I feel it's not worth of course I mean being working for a company if they sell the product I'm happy but the thing is I don't want that to happen because this situation requires a lot of cost you will lose a lot of room in your room because you need to build all this extra wall, seating floor become like your homemade room super small so your whole house you need to do so imagine whole house just give you an idea of the cost of sound moving one bedroom maybe easily 10,000 one bedroom that is easily there is a few reasons one is material because in that kind of space you want to build your wall as thin as possible so you need to use certain materials that are not common there are thinner like 3-4mm but they are denser also because of the floating sometimes you need to float certain things the rubber or springs cost a lot and also the construction itself is different from the normal drywall so lot of people think that once build a normal drywall but the detail to build a soundproof wall is very different so all the joints between the wall and the floor and the ceiling all needs to be properly actually leave a gap and filled with proper acoustic sealant it's a lot of cost you think the sealant one tube at least 12-13 bucks that's the cheapest one no i still cheaper one so you use up very quickly in that sense when you start to fill those gaps and the other thing the time required to build is a lot more because of the detail you don't just wrap it up and screw in and that's it but you need to even i've seen some builders i think it does help but not to a big extent even the schools have certain gaps that they fulfill so like 300 mm between each other and the two sides let's say for example two walls that put in is actually staggered even they will go to that kind of detail to increase the STC so it's a lot of detail in building a soundproof wall that cost usually workers time and that's the main thing so this one when early in my career where i met this young couple who has this problem the neighbour below them have an old kind of fan mounted directly onto the structural beam so the actually transmit up to the bedroom actually this solution first thing i tell the person can you just go now and tell him to buy a new fan or acorn even if you want to do a soundproof but yes the young couple has already tried all avenues but the neighbour refuse to budge so and for the sake of their young kid who is sitting in the room they have to do soundproofing instead but we did want them that the effect won't be 100% because structural bond i can control the wall side but the floor will still come some coming through the floor so that one it's about 50% enough for the kid to sleep but not enough you can still hear it because the old fan is really very loud and so in this various situation you can see there are some cases which the developer need to be responsible for some cases you need to negotiate with your neighbours really no easy way out because soundproofing is not cheap and it's not easy you can control the source it's always a plus point when you go to a solid talent box can you go and down the volume bit so that actually is although it might seem a bit common sense but most people sometimes don't do it and just call us straight away the thing is we can't do much to resolve this because imagine if you would do the whole house soundproofing that would be at least 40,000 maybe 30,000 so it's definitely not but no one would spend that kind of money with my fellow mobile