I recently had my fence replaced with Cedar wood. I had a lot of left over planks and scraps and made some panels and also just straight up attached the planks directly to the wall. It immediately made the room tighter. I thought it was placebo effect but this video justifies my actions. Thanks!
@@AcousticFields I am so amazed that you replied. I watch every video. I've taken the first step with soundproofing the room as best I could and making it symmetrical and that alone eliminated some of my problems. The plywood on the windows , walls and doors has brought out a lot of beauty when playing guitar. I am wanting to build my own bass traps with the carbon when the time comes. I am glad I didn't buy the $1000 foam kits off amazon
Whatever wood, or any material, that you introduce is going to add it's own sound to the room, because it will vibrate. Freestanding wood is really going to add it's own sound. It's fine if you happen to find something that permanently colors the sound in a way you permanently like. It will drive you nuts if it's not.
Trevor Cox, professor of Acoustic Engineering, writes in one of his book that a violin maker would be fortunate to find a wood which resonates. If it does it's due to heterogeneous presence of small wood cells in the wood. It matters for a violin, which produces sound, but amount of energy coming to a wooden plunk's cells is barely enough to make it resonate. As for structural resonance of such wooden plank it can be far outside of the audible range.
@@DmitryMyadzelets It can be outside the range, but it does not have to be. Take a stethoscope and play something pretty energetic and loud and go around and listen to all the stuff in your room. Everything vibrates, everything that vibrates and has a large surface is a speaker. some things vibrate enough to major polluters of the sound.
@@bc527c I had such experience when I began to explore this endless ocean of acoustics. I used a loud sweep signal carefully listening for any resonance in my room. And I caught it! Single layer windows, not properly sealed. The only (big enough) smooth surface from heterogeneous material, glass. I head from other people they could sometimes find resonating objects, but they were always made of glass. I see what you mean. Sure enough, things in a room get energy from the fluctuating air particles, and... well, all that stuff with physics and mechanics. But as I see, people come to this channel for decent practical advice. Too general or too theoretical topics don't make them come closer to a good listening experience in their rooms. This video about wooden walls... To it's like what you've described, resonates in human minds, but it pollutes them.
@@DmitryMyadzelets I'm impressed you found it doing sweeps!. I ended up with a stethoscope when my father left this earth, if you learn the way to do it... I've gone around my room listening to various surfaces with it. The really bad surfaces I've found are the ones that vibrate at higher frequencies than the music, like the two windows in my small listening room, yikes those were bad... I highly recommend audio people pick up a cheap stethoscope for this purpose... cheers!
How about " car siding " tongue a groove walls ? Been thinking about that over the purple drywall im about to install for a room withing a room build ..
So 4.5 “ plantation shutters would still better than glass in your living room for speech intelligibility and has high wife approval? I have a feeling i need to watch a ton more of your videos to get a more comprehensive understanding of what materials absorb which frequencies and which they reflect. Thanks for doing this series, very informative!
it does for musical instruments. wood is a porous material and filling those holes with paint clog up those pores.. There are many types of paint, but more importantly, there are other things like primer, clear coat, and then there is how many layers do you have, are you wet sanding them down in between each layer, etc. Some paints are water based, some are oil based. There are additives like what the automotive paint companies have because they paint cars over different materials, so they need additives to allow paint to cover plastic parts or aluminum/steel/carbon fiber/wood, etc. As you can see, there are a lot of variables and what audible changes when used as an acoustic treatment all has to be tested depending on all the variables applied to the wood. I would say that depending on what paint, primer, clear coat, how many coats, etc. etc. may change the way wood sounds for acoustic treatment. You may or may not like the outcome from a visual or audible perspective.
Well i have a room to be insulated so i might go for this solution instead of dry walls... My only concern would be the Fire Retardant resistance in the room...
Do you have advice for treating rooms with slat and plaster walls? I like the idea of leaning pine boards against the wall because the plaster won't bear much weight. I have foam up not because it's ideal, but because it's all the walls can support. Now the room sounds very dark.
I wanna soundproof my room... first by making studs then applying rockwool and maybe adding mass loaded vinyl on top of that.. from what you're saying wood would be better instead of the drywall right??
using limp mass material types to reduce noise transmission will never work. You must first measure the enemy (noise) you are fighting. Once you know what the noise frequency and amplitudes are, you can then use the proper material types and construction methodology to minimize the noise transfer. Remember that with noise nothing is "proofed".
At what rate does the thickness of the wood make a positive difference acoustically? If a room is already drywalled would adding a 1/4" of ply be worth it? 1/2?
Millennium New Years my band played in an authentic 1800's saloon on a private clients land. The shape of the room combined with softwood reverb, was unbelievable. Best sounding room I've ever played in as a musician !!
My suspicion is that the wood added mass to the wall membrane, changing the walls resonance. That or there was some bad slapback echo maybe. I like the look of wood. Wooden diffusers are easy, there are dozens of them on this channel. But I have not seen bass traps that mostly are mostly wood as far as you can see. Acoustic absorbers that look like wood are probably close to impossible. Maybe some very rough cut wood could be drilled out with a CNC machine and filled with foam on the back?
James Drissel Just watch a few more of Acoustic Fields' videos- they'll answer all your questions. Wood has MORE of an absorptive quality than drywall, but not necessarily enough to use as an absorber. Wood is used for diffusion in their meticulous designs and their proprietary foam is what they use for absorption. (As opposed to rock wool/Owens Corning or any other insulation material). I think this video was meant to point out the benefit of using plywood instead of drywall in a critical listening environment since drywall offers zero sound quality benefits. So if you're building a room from scratch, use plywood instead of drywall.
There is no one material type to deal with reflections. Plywood produces a smoother middle range frequency. That may or may not be your stratedgy or objective. You must decide what sound quality you desire and then apply tactics such as material type, construction methodology etc. to achieve your sonic goals.
@@AcousticFields don’t care about the sound quality honestly, just want to build a drumroom as soundproof as possible, just can’t find the right solution. Every soundproofing company tells another story.
Yes, all material types have increased in costs. We have managed to not increase our prices due to higher material costs. However, we must have those increases to keep moving forward.
I have a double drywall workspace. Would putting 1/4" plywood over the drywall do any good whatsoever for mids and highs? that's the only thickness i can afford to do
Both untreated drywall and wood have the same reflective characteristics/STC . What are you claiming is different about them? This is the same argument as cement or wood floors. Simple measurements show there's LITTLE change between materials AND you have to treat them booth. Which is the next point... You're treating the wall in the first place. It won't have "reflective properties" if it's managed correctly regardless of the material. This is nonsensical and feels like content for the sake of content.
You are confusing the terms. Reflectivity and noise transmission are different sciences. We are discussing in this video material type and overall sound quality for middle range frequencies. Wood is a good material type for middle range frequencies.
@@AcousticFields No, I mentioned both sciences in this situation. How are you making the claim "wood is good for mid frequencies" when measurements from rooms fitted with either material are almost identical before treatment?
@@CynicEidolon So a plywood acoustic guitar will sound the same as drywall guitar? Of course they won't. Different materials will have an effect on sound and in real life people do feel / hear it. Think about when you are mixing, bump up 5k by 1db on vocals and they suddenly pop. Even though scientifically it is pretty much identical.
@@CynicEidolon measuring tools can't catch subtleties like humans,... i just painted a few wooden pieces in my studio while listening to good engineered music and i stopped because i could hear it was changing the sound a lot, in a bad way... I went to a university studio designed with measuring tools and covered with big sections of hard foam diffusors and it sounded terrible, the room cost hundreds of thousands of dollars :( its real dude
@Nat N how much better? what measurements are we talking about, you still need to prove it, at what frequencies and how effective? what STC is the drywall vs plywood? any academic papers to prove it? p.s I have read master handbook of acoustics and own it.
@Nat N I am not talking crap, do you work for the green glue company? there's something not right about you, I won't put up with this abuse! do you understand? I won't be pushed around!
@Nat N I am not too stupid to understand the book no need to insult me. I want you to give me the evidence, I am genuinely curious why you think your opinion is better than dennis foley's on this matter, what is your background? what are your credentials? who do you work for? what is your full real name? if you make a claim, you need to back it up.
@Nat N when I'm talking about pine I am talking about shiplapped redwood pine, or scandanavian pine, this is to improve the sound INSIDE the room, and nothing to do with TL (transmission loss) or STC, sound isolation is it's own subject, yet you're talking about 2 layers of gypsum board with greenglue in between, that is sound isolation not acoustic treatment, you can't even put your own arguments together concisely.
K, Stay away from drywall. Rt-30 time management is all about square footage of coverage. You will need a 60 - 70% coverage on each wall surface to start.
@@kylegushue Nonsense. Drywall has absorption coefficients just like many other materials. Be careful with classifying material types without an understanding of their properties.
Love the plywood+ the panels. Are those panels available covered in acoustically transparent cloth too ? Does the foam go directly against the wall or there's an actual gap between the two surfaces ? Great vid as usual man ! Sorry you had such a hard time with Covid, but glad you're alive and well; take care !
O, Its all about square footage of coverage. No air gap in this install. We were able to accomplish out Rt-30 goals with a flat installation without using the other side.
They have the prebuilt acoustic panels that you can attach to wall or ceiling where there is an air gap. Or you can buy his build plans to make the frames to install the raw foam and then put your own fabric covering the foam. I personally recommend using a fabric over the foam.. It protects the foam, plus if you choose an attractive fabric, it's more esthetically pleasing than looking at raw foam. And you can play around with placing the foam frames up against the wall or leaving gap and see which one you prefer. You may like one method over the other..
Hi Dennis, thanks for your suggestions. I wanted to ask you a question, in the project of my next studio I would like to use glass blocks on the walls at a height of 2.20 meters high and I would like to do underfloor heating. Do you think these two elements could ruin the acoustics of the room?
I have double sheetrock in my living Room / Studio (20' x 30'). I am thinking about *adding* 1/2" or 3/4" Plywood (oak or birch) on the walls. Question: What would be the best way to install the Plywood Sheets over the drywall? Nails? Glue? Is it best for it to be loose or Extremely tight up against the drywall?
@Mario Cantani That is my guess too, the plaster is quite a bit thicker than drywall and its also supported by all the wood slats that make it stiffer.
@@timberray9572 A couple years ago I moved from a place that had plaster walls to one that is drywalled and the difference in room sound is clearly audible and absolutely negative.
Is there any scientific evidence to your advice to use plywood instead of drywall? I've checked the "The master Handbook of Acoustics" book, it says a 1/2” gypsum board has almost equal absorbtion to a 3/8” thick plywood panel in range 125Hz to 4kHz. The panels you use are thinner, so they absorb less. Any way, in general, we need absorbtion, and it's known for gypsum boards, and can be used in any room acoustics calculator. So, why bother?
D, Drywall has a negative effect on frequencies from 200 - 2,000. It creates spatial irregularities in a critically tuned room. Stay with ply and in particular cherry ply for its positive impact on voice and music. Remember achieving quality sound in a room is about doing a lot of little things correctly and in the proper sequence.
@@cary3428 I recently made a partition drywall relying on Knauf 's 112 schema, which has minimal acoustics properties for a living room, according to the producer. The wall assumes installation of double gypsum 1/4" boards on metal stabs, and one layer of 5" mineral wool behind. I was really impressed with the result (it's also very cheap). @Cary , is the drywall in your case resembles what I've described (google the schema for clarity)?
@@AcousticFields One layer of 1/2" gypsum with an empty cavity can be bad for acoustics and are very common. However a single layer of 1/2" wood is equally bad. Two layers of gypsum has been proven time and time again to provide excellent results, especially with a viscoelastic material in between them.
Got it, tearing my whole room apart and install wood. Or just simply quit the audiophile garbage and buy some decent headphones. 👍 👌 Thanks for the inspirations.
And how does that work, enjoying good music with friends in the same room? As a dj a played a couple of silent disco events...everyone in it's own bubble. Next thing you could argue that listening to music on vinyl/cd/mp3 is pointless and only being there is the best way to experience the sensation! Calling this "garbage" just points out you probably never experienced a good listening room i guess.
wow.. those walls are beautiful
This gave a lot of perspective. Thank you Dennis
I recently had my fence replaced with Cedar wood. I had a lot of left over planks and scraps and made some panels and also just straight up attached the planks directly to the wall. It immediately made the room tighter. I thought it was placebo effect but this video justifies my actions. Thanks!
Sound takes on the characteristics of the surface areas it strikes. Every material type has its own "sound".
After watching this I grabbed some Hickory plywood out of my garage and placed it over the windows of my bedroom studio and wow is it amazing sounding
Almost any material type is better than glass in critical listening rooms.
@@AcousticFields I am so amazed that you replied. I watch every video. I've taken the first step with soundproofing the room as best I could and making it symmetrical and that alone eliminated some of my problems. The plywood on the windows , walls and doors has brought out a lot of beauty when playing guitar. I am wanting to build my own bass traps with the carbon when the time comes. I am glad I didn't buy the $1000 foam kits off amazon
Whatever wood, or any material, that you introduce is going to add it's own sound to the room, because it will vibrate. Freestanding wood is really going to add it's own sound. It's fine if you happen to find something that permanently colors the sound in a way you permanently like. It will drive you nuts if it's not.
Trevor Cox, professor of Acoustic Engineering, writes in one of his book that a violin maker would be fortunate to find a wood which resonates. If it does it's due to heterogeneous presence of small wood cells in the wood. It matters for a violin, which produces sound, but amount of energy coming to a wooden plunk's cells is barely enough to make it resonate.
As for structural resonance of such wooden plank it can be far outside of the audible range.
@@DmitryMyadzelets It can be outside the range, but it does not have to be. Take a stethoscope and play something pretty energetic and loud and go around and listen to all the stuff in your room. Everything vibrates, everything that vibrates and has a large surface is a speaker. some things vibrate enough to major polluters of the sound.
@@bc527c I had such experience when I began to explore this endless ocean of acoustics. I used a loud sweep signal carefully listening for any resonance in my room. And I caught it! Single layer windows, not properly sealed. The only (big enough) smooth surface from heterogeneous material, glass.
I head from other people they could sometimes find resonating objects, but they were always made of glass.
I see what you mean. Sure enough, things in a room get energy from the fluctuating air particles, and... well, all that stuff with physics and mechanics.
But as I see, people come to this channel for decent practical advice. Too general or too theoretical topics don't make them come closer to a good listening experience in their rooms. This video about wooden walls... To it's like what you've described, resonates in human minds, but it pollutes them.
@@DmitryMyadzelets I'm impressed you found it doing sweeps!. I ended up with a stethoscope when my father left this earth, if you learn the way to do it... I've gone around my room listening to various surfaces with it. The really bad surfaces I've found are the ones that vibrate at higher frequencies than the music, like the two windows in my small listening room, yikes those were bad... I highly recommend audio people pick up a cheap stethoscope for this purpose... cheers!
if it's 1 feet deep though, 1130 / .99 = 1.14k -) mid range
If your walls are 12" deep, they will absorb much lower than 1.14 k. Our 12" deep ACDA units go down to 30 hz.
Oh thank goodness. I bought 3/4" ply. I grew up building skateboard ramps. I've never worked with drywall. So I ordered ply!
Drywall has a negative impact above 1K
How about " car siding " tongue a groove walls ? Been thinking about that over the purple drywall im about to install for a room withing a room build ..
glued on of course
S, I have no experience with this material type. We use an A grade cherry veneer
What are the top 5 woods to use as 3/4" plywood walls? Is maple okay?
We use cherry wood exclusively because of the rich tones it gives to mid range frequencies. The grain also darkens over time.
I'm curious is the UV just for visual looks and what clear coat are you applying?
So 4.5 “ plantation shutters would still better than glass in your living room for speech intelligibility and has high wife approval?
I have a feeling i need to watch a ton more of your videos to get a more comprehensive understanding of what materials absorb which frequencies and which they reflect.
Thanks for doing this series, very informative!
Does painting the wood surface change the acoustics in a negative way?
D, Yes, everything you do to large surface areas has an impact.
Hello Denis ,what are the effects of paint coating the wood?.does it affect the tone in any way?
it does for musical instruments. wood is a porous material and filling those holes with paint clog up those pores.. There are many types of paint, but more importantly, there are other things like primer, clear coat, and then there is how many layers do you have, are you wet sanding them down in between each layer, etc. Some paints are water based, some are oil based. There are additives like what the automotive paint companies have because they paint cars over different materials, so they need additives to allow paint to cover plastic parts or aluminum/steel/carbon fiber/wood, etc. As you can see, there are a lot of variables and what audible changes when used as an acoustic treatment all has to be tested depending on all the variables applied to the wood.
I would say that depending on what paint, primer, clear coat, how many coats, etc. etc. may change the way wood sounds for acoustic treatment. You may or may not like the outcome from a visual or audible perspective.
Well i have a room to be insulated so i might go for this solution instead of dry walls...
My only concern would be the Fire Retardant resistance in the room...
Could I do reclaimed barn wood, or some other kind of wood, like pallet slats, over drywall and get some of the same benefits of plywood sheets?
For a drum room, it would be a good surface area coverage.
Do you have advice for treating rooms with slat and plaster walls? I like the idea of leaning pine boards against the wall because the plaster won't bear much weight. I have foam up not because it's ideal, but because it's all the walls can support. Now the room sounds very dark.
I wanna soundproof my room... first by making studs then applying rockwool and maybe adding mass loaded vinyl on top of that.. from what you're saying wood would be better instead of the drywall right??
using limp mass material types to reduce noise transmission will never work. You must first measure the enemy (noise) you are fighting. Once you know what the noise frequency and amplitudes are, you can then use the proper material types and construction methodology to minimize the noise transfer. Remember that with noise nothing is "proofed".
Hi Dennis if i have a very small booth space.
Can your ACDA units work as a Gobo that i can move round the vocalist? Or too strong for voice ranges?
L, Many have used that approach.
Please help. Where can i find different kind of woods absorption coefficients maple ash or birck, can you send me a link?
I am not aware of a table with this data.
Why don’t you use perforated MDF or CDF panels, that can be mounted seamlessly?
A, I do not understand your question.
At what rate does the thickness of the wood make a positive difference acoustically? If a room is already drywalled would adding a 1/4" of ply be worth it? 1/2?
J, Add 3/4" cherry ply. Multiple layers inside the ply will assist in reducing vibrations.
Is this for professionals use only or are two channel music and home theater owners using this option? 🤔 I've never seen this.
Anyone who wants to improve mid range timbre.
Millennium New Years my band played in an authentic 1800's saloon on a private clients land. The shape of the room combined with softwood reverb, was unbelievable. Best sounding room I've ever played in as a musician !!
A, Always stay with natural materials.
My suspicion is that the wood added mass to the wall membrane, changing the walls resonance. That or there was some bad slapback echo maybe.
I like the look of wood. Wooden diffusers are easy, there are dozens of them on this channel. But I have not seen bass traps that mostly are mostly wood as far as you can see. Acoustic absorbers that look like wood are probably close to impossible. Maybe some very rough cut wood could be drilled out with a CNC machine and filled with foam on the back?
James Drissel Just watch a few more of Acoustic Fields' videos- they'll answer all your questions. Wood has MORE of an absorptive quality than drywall, but not necessarily enough to use as an absorber. Wood is used for diffusion in their meticulous designs and their proprietary foam is what they use for absorption. (As opposed to rock wool/Owens Corning or any other insulation material). I think this video was meant to point out the benefit of using plywood instead of drywall in a critical listening environment since drywall offers zero sound quality benefits. So if you're building a room from scratch, use plywood instead of drywall.
I don’t get it, I want to build a drumroom. Is plywood better soundproofing than Sheetrock? Or does is just sounds better
There is no one material type to deal with reflections. Plywood produces a smoother middle range frequency. That may or may not be your stratedgy or objective. You must decide what sound quality you desire and then apply tactics such as material type, construction methodology etc. to achieve your sonic goals.
@@AcousticFields don’t care about the sound quality honestly, just want to build a drumroom as soundproof as possible, just can’t find the right solution. Every soundproofing company tells another story.
Plywood has went up profusely but is nice
Yes, all material types have increased in costs. We have managed to not increase our prices due to higher material costs. However, we must have those increases to keep moving forward.
I have a double drywall workspace. Would putting 1/4" plywood over the drywall do any good whatsoever for mids and highs? that's the only thickness i can afford to do
Use cherry wood for middle and high frequency tonal ranges.
@@AcousticFields I only have access to Poplar plywood. Is that ok? And will 1/4" even do anything positive?
@@AcousticFields Cherry plywood are not available where l live . Will Birch plywood be a good option ?
Both untreated drywall and wood have the same reflective characteristics/STC . What are you claiming is different about them? This is the same argument as cement or wood floors. Simple measurements show there's LITTLE change between materials AND you have to treat them booth. Which is the next point... You're treating the wall in the first place. It won't have "reflective properties" if it's managed correctly regardless of the material. This is nonsensical and feels like content for the sake of content.
You are confusing the terms. Reflectivity and noise transmission are different sciences. We are discussing in this video material type and overall sound quality for middle range frequencies. Wood is a good material type for middle range frequencies.
@@AcousticFields No, I mentioned both sciences in this situation. How are you making the claim "wood is good for mid frequencies" when measurements from rooms fitted with either material are almost identical before treatment?
@@CynicEidolon So a plywood acoustic guitar will sound the same as drywall guitar? Of course they won't. Different materials will have an effect on sound and in real life people do feel / hear it. Think about when you are mixing, bump up 5k by 1db on vocals and they suddenly pop. Even though scientifically it is pretty much identical.
@@CynicEidolon measuring tools can't catch subtleties like humans,... i just painted a few wooden pieces in my studio while listening to good engineered music and i stopped because i could hear it was changing the sound a lot, in a bad way... I went to a university studio designed with measuring tools and covered with big sections of hard foam diffusors and it sounded terrible, the room cost hundreds of thousands of dollars :( its real dude
@@domgirard4095 Lmao!!! Do you belive everything you just said? Cause I don't.
I plan on making some pine shiplapped panels on my walls, do you think this is a good idea? or would plywood be better?
@Nat N you are entitled to your opinion but why should I? you need to give me reasons.
@Nat N how much better? what measurements are we talking about, you still need to prove it, at what frequencies and how effective? what STC is the drywall vs plywood? any academic papers to prove it? p.s I have read master handbook of acoustics and own it.
@Nat N I am not talking crap, do you work for the green glue company? there's something not right about you, I won't put up with this abuse! do you understand? I won't be pushed around!
@Nat N I am not too stupid to understand the book no need to insult me. I want you to give me the evidence, I am genuinely curious why you think your opinion is better than dennis foley's on this matter, what is your background? what are your credentials? who do you work for? what is your full real name? if you make a claim, you need to back it up.
@Nat N when I'm talking about pine I am talking about shiplapped redwood pine, or scandanavian pine, this is to improve the sound INSIDE the room, and nothing to do with TL (transmission loss) or STC, sound isolation is it's own subject, yet you're talking about 2 layers of gypsum board with greenglue in between, that is sound isolation not acoustic treatment, you can't even put your own arguments together concisely.
What material do you recommend for walls for a midsized venue, like seats 300 people or less?
K, Stay away from drywall. Rt-30 time management is all about square footage of coverage. You will need a 60 - 70% coverage on each wall surface to start.
@@kylegushue Nonsense. Drywall has absorption coefficients just like many other materials. Be careful with classifying material types without an understanding of their properties.
Love the plywood+ the panels. Are those panels available covered in acoustically transparent cloth too ? Does the foam go directly against the wall or there's an actual gap between the two surfaces ? Great vid as usual man ! Sorry you had such a hard time with Covid, but glad you're alive and well; take care !
O, Its all about square footage of coverage. No air gap in this install. We were able to accomplish out Rt-30 goals with a flat installation without using the other side.
They have the prebuilt acoustic panels that you can attach to wall or ceiling where there is an air gap. Or you can buy his build plans to make the frames to install the raw foam and then put your own fabric covering the foam.
I personally recommend using a fabric over the foam.. It protects the foam, plus if you choose an attractive fabric, it's more esthetically pleasing than looking at raw foam. And you can play around with placing the foam frames up against the wall or leaving gap and see which one you prefer. You may like one method over the other..
Great videos !!
Hi Dennis, thanks for your suggestions. I wanted to ask you a question, in the project of my next studio I would like to use glass blocks on the walls at a height of 2.20 meters high and I would like to do underfloor heating. Do you think these two elements could ruin the acoustics of the room?
You need a greater ceiling height. Low ceiling heights produce axial modes in the 50 - 70 Hz. range along with the harmonics at 100 Hz. and 140 Hz.
@@AcousticFields the height of the studio is 9 feet, I would put the glass blocks horizontally between 7.2 and 8 feet. Would it cause problems?
@@AcousticFields what about underfloor heating in the studio? Thank you for your kind help
Great!
I have double sheetrock in my living Room / Studio (20' x 30').
I am thinking about *adding* 1/2" or 3/4" Plywood (oak or birch) on the walls.
Question: What would be the best way to install the Plywood Sheets over the drywall? Nails? Glue?
Is it best for it to be loose or Extremely tight up against the drywall?
Glue the ply to the rock.
@@AcousticFields What glue do you recommend?
@@AcousticFields Is carpet adhesive ok? It remains tacky throughout its life but is strong
@@levijessegonzalez3629 Carpet glue is fine.
@@AcousticFields is 3/4" plywood worth the extra $ vs. 1/2"? Or will 1/2" be ok?
Which is best for sound proofing a room?
No such thing as best for all usages. What are the frequency and amplitudes of your noise transmission issues?
@@AcousticFields People talking, loud TV or music noise is what I am trying to block.
Could you give some thoughts on what to do with plaster walls? I find they sound better than drywall , but I am not sure why.
@Mario Cantani That is my guess too, the plaster is quite a bit thicker than drywall and its also supported by all the wood slats that make it stiffer.
R, Plaster at a 1" thickness has rates and levels of absorption that favor music and voice.
@@AcousticFields So I am not crazy after all.
@@timberray9572 A couple years ago I moved from a place that had plaster walls to one that is drywalled and the difference in room sound is clearly audible and absolutely negative.
Another great video thanks Denis 😊👍
My pleasure!
thanks again!
Any time!
Is there any scientific evidence to your advice to use plywood instead of drywall?
I've checked the "The master Handbook of Acoustics" book, it says a 1/2” gypsum board has almost equal absorbtion to a 3/8” thick plywood panel in range 125Hz to 4kHz. The panels you use are thinner, so they absorb less.
Any way, in general, we need absorbtion, and it's known for gypsum boards, and can be used in any room acoustics calculator. So, why bother?
D, Drywall has a negative effect on frequencies from 200 - 2,000. It creates spatial irregularities in a critically tuned room. Stay with ply and in particular cherry ply for its positive impact on voice and music. Remember achieving quality sound in a room is about doing a lot of little things correctly and in the proper sequence.
My ears tell me that drywall is awful. No calculator required.🤙🏻✌️
@@cary3428 I recently made a partition drywall relying on Knauf 's 112 schema, which has minimal acoustics properties for a living room, according to the producer. The wall assumes installation of double gypsum 1/4" boards on metal stabs, and one layer of 5" mineral wool behind. I was really impressed with the result (it's also very cheap).
@Cary , is the drywall in your case resembles what I've described (google the schema for clarity)?
@@AcousticFields One layer of 1/2" gypsum with an empty cavity can be bad for acoustics and are very common. However a single layer of 1/2" wood is equally bad. Two layers of gypsum has been proven time and time again to provide excellent results, especially with a viscoelastic material in between them.
D, Mid-range tone / timbre.
Got it, tearing my whole room apart and install wood. Or just simply quit the audiophile garbage and buy some decent headphones. 👍 👌 Thanks for the inspirations.
And how does that work, enjoying good music with friends in the same room? As a dj a played a couple of silent disco events...everyone in it's own bubble. Next thing you could argue that listening to music on vinyl/cd/mp3 is pointless and only being there is the best way to experience the sensation! Calling this "garbage" just points out you probably never experienced a good listening room i guess.
S, We design personal listening rooms all the time. Here is a link to our projects. www.acousticfields.com/projects/