Someone should make an "anti-microphone"

[Waru]

an anti-microphone is called a speaker

[Ad Bot]

[Momentum]

i have about 500 sq. feet of two inch acoustic foam WOO

that $125,000 my family put into a failed business pays off

wtf ship me some of that

[Mysteroo]

Would it work if it was bowl-shaped end? Then if used it so that it covered your mouth it might be able to absorb the sound before it can enter into the room

[SiliconCactus]

what if there was a sphere of 2inch acoustic foam surrounding a head snugly

[Orion]

they've invented smaller versions of black holes in laboratories

instead of not letting light out, it doesn't let sound out.

but it'd cost so much

[Ladios]

Ok so I drew a picture
Waves cancel eachother out when opposite and stuff
The speaker would probably have to be closer to the recipient than the person being antimic'd but minor drawing mistake I suppose

[Night Fox]

idk how you could possibly use this practically
but rooms that absorb a lot of sound (or just reflect it in a particular way?), I think, are used for recording some things?

[dorkdotdan]

The people who need this the most probably wouldn't buy it.

[Night Fox]

oh, just realized what op meant
no, most likely not
you can still hear someone talking in person, even if they're using a microphone
and basically what you're asking for is a microphone that doesn't reflect any sound
so all of those sound waves that don't touch it would still continue to the people they didn't want to hear stuff

[dorkdotdan]

oh, just realized what op meant
no, most likely not
you can still hear someone talking in person, even if they're using a microphone
and basically what you're asking for is a microphone that doesn't reflect any sound
so all of those sound waves that don't touch it would still continue to the people they didn't want to hear stuff

Do you know how noise cancelling works? The device would copy the sound that went into it and play it back 180° out of phase to silence it.

Given it wouldn't be perfect because there would be delay, but for the most part it's possible.

[Night Fox]

Do you know how noise cancelling works? The device would copy the sound that went into it and play it back 180° out of phase to silence it.

I've got a feeling that would be expensive or bothersome
and I don't think anyone is that insecure about their voice, or that they would want to sing that much

[dorkdotdan]

I've got a feeling that would be expensive or bothersome
and I don't think anyone is that insecure about their voice, or that they would want to sing that much

This is how active noise cancelling headphones work.

It would probably cost about $150. You're probably right.

[SiliconCactus]

idk how you could possibly use this practically
but rooms that absorb a lot of sound (or just reflect it in a particular way?), I think, are used for recording some things?

yeah, in a nutshell

my family owned a recording studio (thus how I own 500sqf of 2" foam) for a while, and the room where recording was done was padded on all walls (with a special rug and carpeting on the floors), and you could barely hear anything when outside of it. it was super expensive though. had to remake the entire room to make it work correctly.

[Mysteroo]

practicality smacticality, this would still be cool if it existed

they've invented smaller versions of black holes in laboratories
instead of not letting light out, it doesn't let sound out.

I think I remember hearing about that somewhere, but I haven't looked into it very much. Maybe a mini black hole on the end of the mich? XD

[Port]

you can cancel out sound by sending out opposite sound waves but it won't work because you have to receive the sound before you can send out matching opposite sound waves and then it's too late