|
born on a buy you posted:sure but like if you’re in the United States and are a chud why are you backing the bobbies?? shouldn’t you be pro local racist cops sorry but you need to describe what bobbies are in american for me thx
|
#
?
Aug 8, 2022 23:32
|
|
|
|
| # ? May 8, 2024 19:00 |
|
|
hbag posted:i dont know but we have a big-rear end, loud-rear end air conditioner in the "office" and when i had them on i literally could not hear it at all the reason active noise canceling headphones work is they are actually generating soundwaves that are 180 degrees out of phase with the sound waves they pick up from outside.  this middle category is what your headphones are doing. its nifty, but i'm personally not a huge fan of active noise canceling because although i can't hear the sounds it's generating to cancel the other sounds, it feels like there's pressure on my ears when the active noise canceling is on.
|
|
#
?
Aug 8, 2022 23:32
|
|
|
a digital orc posted:sorry but you need to describe what bobbies are in american for me thx slang for oral sex, innit
|
|
#
?
Aug 8, 2022 23:34
|
|
|
Mr. Nice! posted:this middle category is what your headphones are doing. its nifty, but i'm personally not a huge fan of active noise canceling because although i can't hear the sounds it's generating to cancel the other sounds, it feels like there's pressure on my ears when the active noise canceling is on. yeah its nonrational but this is why i cant wear em either, it just feels bizzare and unnatural
|
|
#
?
Aug 8, 2022 23:34
|
|
|
born on a buy you posted:sure but like if you’re in the United States and are a chud why are you backing the bobbies?? shouldn’t you be pro local racist cops back the blue, no matter who
|
|
#
?
Aug 8, 2022 23:39
|
|
|
noise canceling headphones do that to me too. ive even gotten nauseous from them before when they were really going nuts and the seal on the headphones was weird it isn't irrational to not wanna feel bad
|
|
#
?
Aug 8, 2022 23:43
|
|
|
rotor posted:yeah its nonrational but this is why i cant wear em either, it just feels bizzare and unnatural i don't think its non-rational - although you cannot interpret the sound waves because they negate each other, there are still sound waves and thus pressure being generated. i also have tinnitus and hearing loss and weird ear stuff from time to time anyways, so that may have some impact here.
|
|
#
?
Aug 8, 2022 23:44
|
|
|
rip the rare good australian
|
|
#
?
Aug 8, 2022 23:44
|
|
|
i do not think the majority of people are bothered by it, but based upon my experience and that of two goons i'm confident in saying that some people are bothered by active noise cancellation. that doesn't mean it's bad. my ex-gf loves her headphones. i can't use em.
|
|
#
?
Aug 8, 2022 23:45
|
|
|
Mr. Nice! posted:i do not think the majority of people are bothered by it, but based upon my experience and that of two goons i'm confident in saying that some people are bothered by active noise cancellation. that doesn't mean it's bad. my ex-gf loves her headphones. i can't use em. well yeah duh she got them in the breakup
|
|
#
?
Aug 8, 2022 23:47
|
|
|
bump_fn posted:well yeah duh she got them in the breakup lol
|
|
#
?
Aug 8, 2022 23:49
|
|
|
Mr. Nice! posted:i don't think its non-rational - although you cannot interpret the sound waves because they negate each other 1 + (-1) is zero - the sound pressure isn't actually there, at least not theoretically. Maybe its the errors on the edges of the sound or something that are sub-audible but still somehow feel weird.
|
|
#
?
Aug 8, 2022 23:49
|
|
|
Mr. Nice! posted:this middle category is what your headphones are doing. its nifty, but i'm personally not a huge fan of active noise canceling because although i can't hear the sounds it's generating to cancel the other sounds, it feels like there's pressure on my ears when the active noise canceling is on. for my twitch/youtube setup, because i hate headphones, i use speakers but they bleed into the mic a little bit. so i have a special dedicated box set up that takes the speaker audio, inverts the phase, and delays it by about 2.5 ms to match the distance x speed of sound in air delay, then feeds it into the mic channel. basically handrolled the above
|
|
#
?
Aug 8, 2022 23:50
|
|
|
rotor posted:1 + (-1) is zero - the sound pressure isn't actually there, at least not theoretically. Maybe its the errors on the edges of the sound or something that are sub-audible but still somehow feel weird. yeah that's right. for some reason i was thinking that after perfectly destructive interference there was still a pressure, but the waves are gone so there can't be. my bet is you're right and it's some bleedover with an neigh inaudible frequency.
|
|
#
?
Aug 8, 2022 23:52
|
|
|
i haven’t thought about it at all, but wouldn’t they only cancel in some places but not others? like since their source location is different it can’t actually totally cancel the sound.
|
|
#
?
Aug 8, 2022 23:54
|
|
|
i get the pressure thing too. i've always used cheap devices with anc and figured it was just due to them being cheap, but these posts make me suspect i'd feel the same with bose
|
|
#
?
Aug 8, 2022 23:55
|
|
|
Eeyo posted:i haven’t thought about it at all, but wouldn’t they only cancel in some places but not others? like since their source location is different it can’t actually totally cancel the sound. nope. airpods pro have two microphones. one is on the outside and hears, well, the world. this is the main driver for the noise cancellation. the only thing you care about is time of arrival at the ear, they dont care how far away it is they also have a microphone inside facing your ear. this is a correction mic that fine tunes the cancellation algorithm because everybodys ear and fit is gonna be different, so it will detect if some high frequency content is leaking through or whatever, and tune the math to cancel that out.
|
|
#
?
Aug 8, 2022 23:56
|
|
|
Jonny 290 posted:for my twitch/youtube setup, because i hate headphones, i use speakers but they bleed into the mic a little bit. so i have a special dedicated box set up that takes the speaker audio, inverts the phase, and delays it by about 2.5 ms to match the distance x speed of sound in air delay, then feeds it into the mic channel. basically handrolled the above that's awesome!
|
|
#
?
Aug 8, 2022 23:57
|
|
|
Jonny 290 posted:nope. airpods pro have two microphones. one is on the outside and hears, well, the world. this is the main driver for the noise cancellation. the only thing you care about is time of arrival at the ear, they dont care how far away it is computers are fast
|
|
#
?
Aug 8, 2022 23:59
|
|
|
mine sure aint!!!!!!!!!!!!!!!!!!!!!
|
|
#
?
Aug 8, 2022 23:59
|
|
|
rotor posted:computers are fast and the wild thing is that, yes, since you have an ear-facing microphone right next to the speaker in the airpod, it's basically getting hurricane'd constantly with really high volume audio. but it has its own noise cancelling algorithm to nullify that out, so it's listening for mouse farts while ignoring the tornado two mm from it. computers are faaaaaast
|
|
#
?
Aug 9, 2022 00:02
|
|
|
Jonny 290 posted:nope. airpods pro have two microphones. one is on the outside and hears, well, the world. this is the main driver for the noise cancellation. the only thing you care about is time of arrival at the ear, they dont care how far away it is ok it makes more sense with an extra feedback mic. i was thinking the wavelength was shorter too, but it's like > 1cm, so the ear is small compared to that and yeah just getting timing right should do it. i was thinking of like waves in a pond from 2 different sources.
|
|
#
?
Aug 9, 2022 00:10
|
|
|
Jonny 290 posted:and the wild thing is that, yes, since you have an ear-facing microphone right next to the speaker in the airpod, it's basically getting hurricane'd constantly with really high volume audio. but it has its own noise cancelling algorithm to nullify that out, so it's listening for mouse farts while ignoring the tornado two mm from it. computers are faaaaaast
|
|
#
?
Aug 9, 2022 00:14
|
|
|
helo yospals <3
|
|
#
?
Aug 9, 2022 00:21
|
|
|
what if you got a pair of those earmuffs people wear to mow lawns and put those on on top of your normal headphones?
|
|
#
?
Aug 9, 2022 00:35
|
|
|
prefect posted:what if you got a pair of those earmuffs people wear to mow lawns and put those on on top of your normal headphones? this is a thing yes, sometimes when dudes go shooting they wear noise cancelling over-ear cans, but then put the earbud from a walkie-talkie in first, so they can talk to each other. it works fine
|
|
#
?
Aug 9, 2022 00:37
|
|
|
when i was a kid we had a pair of earmuffs that had a mic on the outside, and then it would cut out when it detected a gunshot. worked great, and you could crank the volume so you had amplified hearing when you were waiting for a deer to walk by that was circa 1993 and it owned
|
|
#
?
Aug 9, 2022 00:42
|
|
|
cjs: forgot about a project for two months but I found the least painful way to fall on my sword and got it through pommel and all so well the customer didn't even notice I had done it lol
|
|
#
?
Aug 9, 2022 00:58
|
|
|
Achmed Jones posted:when i was a kid we had a pair of earmuffs that had a mic on the outside, and then it would cut out when it detected a gunshot. worked great, and you could crank the volume so you had amplified hearing when you were waiting for a deer to walk by that was circa 1993 and it owned yeah i have a pair and they're very different than noise cancelling earphones, i like em a lot.
|
|
#
?
Aug 9, 2022 01:04
|
|
|
rotor posted:yeah i have a pair and they're very different than noise cancelling earphones, i like em a lot. those things are cool. big heavy duty passive ear muffs are cool, too, but they only get around 20db in reduction. going into the engine rooms you're supposed to wear those and earplugs.
|
|
#
?
Aug 9, 2022 01:09
|
|
|
Kazinsal posted:cjs: forgot about a project for two months but I found the least painful way to fall on my sword and got it through pommel and all so well the customer didn't even notice I had done it lol I ducking hate working on multiple projects at once and I will never go back to it
|
|
#
?
Aug 9, 2022 01:41
|
|
|
quack quack motherfucker
|
|
#
?
Aug 9, 2022 01:42
|
|
|
bump_fn posted:rip the rare good australian Olivia newton john or the footie guy
|
|
#
?
Aug 9, 2022 01:44
|
|
|
Achmed Jones posted:when i was a kid we had a pair of earmuffs that had a mic on the outside, and then it would cut out when it detected a gunshot. worked great, and you could crank the volume so you had amplified hearing when you were waiting for a deer to walk by that was circa 1993 and it owned these turned out to be the best option for woodworking, you can turn the external mic up to what’s comfortable and then it compresses anything above like 90dB with 2ms to the max volume setting you’re on. for some reason (market size?) woodworker muffs tend to be passive from 24 - 30 suppression but there are very few active options that use compression - though there are lots of radio tuner versions. anyways, they are amazing for woodworking or anything intermittently loud. i’m betting the reason airpods have an in-ear microphone is because noise cancelling as a concept Works really well but is very sensitive to calibration i.e very slight distance changes in the parameters. if you don’t cancel it completely you get a bit of the original signal and the inverse and they can add up. there’s probably a generic distance parameter and then they just adjust from the feedback. this is probably also why they have that nice sealed ear test. it’s extremely cool but the wild part is it’s working on ms level - which is a 100 microseconds which is a decent amount of time to process and adjust. especially when tuned, processors are really fast yeah
|
|
#
?
Aug 9, 2022 01:59
|
|
|
Enderzero posted:these turned out to be the best option for woodworking, you can turn the external mic up to what’s comfortable and then it compresses anything above like 90dB with 2ms to the max volume setting you’re on. for some reason (market size?) woodworker muffs tend to be passive from 24 - 30 suppression but there are very few active options that use compression - though there are lots of radio tuner versions. anyways, they are amazing for woodworking or anything intermittently loud. 100% can confirm
|
|
#
?
Aug 9, 2022 02:03
|
|
|
Mr. Nice! posted:yeah that's right. for some reason i was thinking that after perfectly destructive interference there was still a pressure, but the waves are gone so there can't be. idk if this is related, but a lot of people (like me) feel pressure on ur eardrums when you stand inside an anechoic chamber
|
|
#
?
Aug 9, 2022 02:28
|
|
|
FAT32 SHAMER posted:I ducking hate working on multiple projects at once and I will never go back to it I’m the only datacenter expert in the project delivery team  on the plus side it means my boss is willing to throw fat stacks of money to keep me around so 
|
|
#
?
Aug 9, 2022 02:29
|
|
|
fart simpson posted:idk if this is related, but a lot of people (like me) feel pressure on ur eardrums when you stand inside an anechoic chamber now i'm remembering the couple of times i've been in a recording studio and yeah whichever ear was facing the nearest sound-absorbing wall would feel a pressure on it i'm just gonna chalk it up to our evolution never encountering true silence and so when it happens it sort of glitches out a bit. idk
|
|
#
?
Aug 9, 2022 02:50
|
|
|
fart simpson posted:idk if this is related, but a lot of people (like me) feel pressure on ur eardrums when you stand inside an anechoic chamber i have never been in one of those nor do i know what one of those is
|
|
#
?
Aug 9, 2022 02:51
|
|
|
|
| # ? May 8, 2024 19:00 |
|
|
so how do you know you've never been in one?
|
|
#
?
Aug 9, 2022 02:51
|
|