When reading about regularization I think one of the most important things is to recognize that as lambda goes up the absolute value of the coefficient estimates goes down which leads to a reduction in variance.
But, the ACTEX manual also states that as lambda goes to infinity the coefficient estimates go to zero (in the case of LASSO). I feel like this is assumed to be obvious to everyone. It is not obvious to me at all. Do we need to know why the coefficients go to zero with an infinitely large lambda (using LASSO)? If this is something that is supposed to be very obvious can someone please fill me in?
Finally got ARNR activated on my car and had a chance to do some testing today. Don't expect the cones of silence, but I thought it worked pretty well. It really shines on faster surface roads. At highway speeds, you can see on the graph that it helps with low frequency noise but wind noise is the predominant thing you hear at those speeds so impact is noticeable. I would expect this is the kind of thing Tesla can refine over time.
I’m sure earplugs aren’t exactly a secret but I got some finally and they make such a difference. One of my main struggles is noise sensitivity. I’m supposed to still be able to hear people talking with them in and I can’t really, but they are perfect for when I’m walking around outside and have to hear loud cars and busses passing from all directions. Just posting in case this helps someone.
Title. A weird request, I know. Basically, my room is right next to my very noisy roommate who refuses to close their door, even though they're up when I sleep. I've tried a few earplug solutions, and most of them end up being useless after a week or so, either because they're the wax kind that naturally get harder over time, or they're just nllow quality. They also usually end up irritating my ears enough to be detrimental.
Something that lasts longer than those would be nice. I'd prefer not going over $50, but if the best quality is over that, so be it.
Sorry if this is a very basic question, but seeing this description surprised me as I've only ever come across the correlation coefficient being described as the measure of the strength of the relationship between two variables and other slight variations. This is quite understandable but “percentage of shared determinants” seems even more intuitive than that.
I ordered a Pyle Sound Dampening Speaker Riser Foam - Audio Acoustic Noise Isolation Platform 15" x 15", from Amazon and put my MK3S+ on it, and it quieted it down quite a bit. I was trying to find something more visually appealing than a concrete paver. I haven't tried a concrete paver yet, so next time I'm at a home improvement store, I'll pick one up and compare. I've heard of people using granite or marble cutting boards with foam feet too.
Is there a way to reduce the noise coming from a DIY hitbox in a plexi case? I like to practice at night, but my housemates in the next floor up are still able to hear the buttons.....
I just moved into a new 500 sq. ft. apartment that is near a highway. I don't have a lot of furniture or stuff, I was in a 230 sq ft studio before. The cars are constantly passing and making a good amount of noise, especially trucks and vehicles that accelerate quickly. The sounds come mostly from my big windows (that make the entire walls) in my living room and bedroom. I'd love to know what ideas and tips you have for blocking/mitigating the noise while keeping the space minimalist. I don't have a lot of decorations and I prefer to keep my environment sober (like I don't want to buy a huge bookshelf and fill it with stuff). I was thinking of buying thicker curtains and a rug for the living room as my new place is a bit echoey.
Edit: Thank you all for your replies! I should have mentioned that I already own a white noise machine (and it helps with covering the noise) but I was hoping to get suggestions to tamper the sounds so I could sleep and relax without having to use it (or earplugs). I will look more into buying thick curtains and a rug, maybe add acoustic blankets/curtains as well!
Hey everyone, I'm trying to find a solution for a growing problem in my house. I play a video game called Apex Legends that requires a lot team communication that is often fast pased and loud (as we have to speak over the gun fire in game). This was fine when I lived alone but now that I'm married I have to consider my wife's needs, namely not hearing me yell in the house 😂.
Some additional context that is important: My "office" where my computer is (and where I play the game) is in a extended portion of the landing just off the stairs which does not have a door and is open to the entire living room. Picture for reference: https://ibb.co/fdmm0J7
For different reasons the two upstairs rooms can't be used for my office nor can it be moved to the master bedroom downstairs.
Some things I've tried:
- Switching from over the ear headphones to earbuds so I can better hear my volume.
- Not talking so loud (a work in progress)
So finally, my question is: if I covered the walls around my "office" with sound dampening panels would that help with the volume issue? Obviously I can't do anything about the sound going directly from me over the banister and downstairs but I figured dampening the 3 other walls would cut down on some sound echo.
Please ask any questions that would help clarify it for you, I'll do my best to answer!
Thanks for the help!
I’ve been recently trying to convince myself on getting a GX80/85 as my first mirrorless camera, to get back into enjoying photography. One thing that I’ve noticed is that the RAWs are fantastic and seem to contain loads of detail when processed in Lightroom, but the JPEGs seem to have a ton of noise reduction that scrub a lot of fine detail even at lower ISOs and especially in lower light.
I’m okay with shooting JPEG+RAW and doing extra processing for lower ISOs but I’ve seen that the camera also has noise reduction settings for JPEGs. Apparently NR-5 fixes a lot of the smeary fine details that appear in GX85 photos.
Would anyone be able to take a photo on their GX85 that shows this compared to NR+0 and RAW output? I’ve seen a couple of examples on forums that are quite compressed so don’t really show a fair representation.
Additional question:
Would the E-M10 II/III be a better choice for a first M43 body with good IBIS, in terms of how JPEGs are output? I am looking for something very compact. that will have the Panasonic 20mm f/1.7 pancake mounted on it but still has a viewfinder and IBIS.
I am more than okay with RAW processing but it would be good to have something that can take decent JPEGs if needed too.
While the content is clearly fantastic!… the video noise reduction used is abhorent. They might as well have animated the entire series, there‘s not a single spec of original detail or grain from the actual ‘film’ here. They’ve blurred and corrupted it to death and then applied a basic fake gaussian noise filter on top. The skin texture on their faces is completely gone.
If you don’t see what I‘m talking about, at about 31 minutes of episode 1, there are shots showing small text in the background of the studio clearly readable, but in the foreground their faces and guitars are a solid block of colour. There’s no need for this.
It actually has the look of the ’Neat Video’ Adobe Premiere plugin to it. But that filter has been applied by someone who’s playing with the settings and never used it before.
I hope Jackson releases another version with some sembelence of what was on the actual film scan.
What are people’s thoughts?
Has anyone here tried foam ear plugs for their toddler? We want to try reducing noise for our 2 year old in over stimulating situations. Especially after we noticed he is plugging his ears or having us cover his ears.
The trouble is he hates anything on his head. So typical ear muffs probably wont work. We do, however have about a million foam ear plugs.
Thoughts? Ideas that worked for your young child?
Looking for advice on a enclosed server cabinet that can fit a Dell PowerEdge R740xd2 and properly keep the server ventilate/cooled as it generates alot of heat and reduce the noise output coming from the server. I have a client that doesn't have a proper server room and all the networking equipment is located within the office open floor plan. We just installed this server and everyone is complaining about the loud noises coming from it. Even when the server is idle its quite loud. I've already tried adjusting the thermal settings in BIOS and its still pretty loud. The owner of the company wants an enclosure to reduce the noise however this baby generates a lot of heat and regular enclosures will probably cause it to overheat. Any suggestions would be highly appreciated!!
I've read a handgun is about 165db and a rifle like an AR-15 is 167db.
According to the advertised NRR rating on hearing protection headphones it's typically around 18db-35db. Ive heard that in some case the NRR rating can be lower than it's actual effective db reduction due to the difference in sound at certain frequencies or something.
I've also heard something like foam ear plugs have an nrr of 30. And if you were to double up on ear protection so let's say a 25db nrr headset and 30db ear plugs it would equal maybe 40db reduction or something. I have no idea how the math works.
I've also read exposure beyond 1 second at 127 decibels will result in hearing damage.
So if you shoot an AR-15 which is 167db and use hearing protection and minus 40db. You're left at 127db and it seems you can only fire 1 shot for 1 second and anything beyond that will result in hearing loss.
Am I correct? Is there really no safe way to shoot guns without hearing loss? Is my math completely off. What am I not factoring in? Is the hearing loss so extremely minimal it's not worth considering? Or is it something that after a few dozen hour long shooting sessions you'll notice severe hearing loss?
Fill me in guys. I want to get into shooting but I don't want to lose hearing. Possible? Or is hearing protection only lessening the damage?
So I made a video to post on Friday about New Years, mental health and suicide….. long story!!!! Anyways I recorded it in my truck because I’m awkward and then told myself I would only do it once so it was authentic. Well a coffee cup rattled right next to my phone the whole time!!!! It’s loud and ruined the whole video!!! Is there anyways to edit that sound out????
Regularly see coreaudiod with 12% cpu utilisation, and there doesn’t look like there’s any options under sound/input
I’m currently looking to replace the popcorn ceiling in one of my rooms with something that looks nicer. I was hoping to see if there were effective alternatives that would reduce noise made in my room.
I’m just looking at my options here to see how to soundproof my room before going straight in.
Any recommendations to resources is appreciated, thank you
Hi folks,
I'm building iOS / macOS app and are looking for some common Audio Units to process user's audio.
Specifically, I'm looking for ducking / noise reduction audio units that I could easily integrate with Apple's audio system.
Does anyone know about such open-source projects?
I've been researching hearing protection for shooting firearms trying to determine the best hearing protection setup reasonably possible.
All hearing protection seems to have an advertised Noise Reduction Rating (NRR) And I've also heard that NRR is basically worthless due to the difference in frequency ranges of sound. Can someone explain this part to me and how I can determine the actual db reduction for specific circumstances such as shooting a handgun or rifle?
