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Looking for the best sounding noise canceling mic for less than $120~

post #1 of 43
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A guy i know is looking for a noise canceling mic for less than $120~, He is on a ventilator and he wants to eliminate background noise from that and also whatever else is going on in the room. I was looking at the blue yeti or snowball mic but i know nothing about mics so i figured someone here could help. Thanks!
    
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post #2 of 43

He needs to look into a "dynamic" mic. Any "condenser" is going to pick up sound in a very similar way to the way our ears pick up sound. However, a dynamic mic "suffers" from the "proximity effect". The closer the mic is to the sound source, the louder it will be. At just 2-3 feet from a person's mouth, a dynamic mic is pretty much useless unless you are doing backup vocals and you need to sing loud for the proper tone but your volume needs to be very low. That should give you an idea of how great dynamic mics are in a noisy room when all you want to pick up is whatever is like say 2 feet away and basically directly in front of it.

 

Speaking of direction: there are different "pick-up patterns". The most common and probably the best is the Cardioid pattern. Here's a manufacturer's description of the different pick-up patterns:

 

http://www.heilsound.com/pro/mic-primer/pickup-patterns

 

Having said that, I am worried about one thing: will he be able to get within 1-2 feet away from the front of the mic and stay there while he's speaking?

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post #3 of 43
Is the actual machine part of the ventilator going to be sat in the corner of the room? What software is he using? If the software comes with a noise gate capable of attenuating sounds below the threshold whilst remaining open to sound above it, that would be very useful combined with a cardioid mic placed so the ventilator machine is nearly but not quite entirely directly behind the mic or hypercardiod with the ventilator diagonally behind the mic.

Those cheap USB condensers sound alrightish, combined with a good partially closing noise gate and good placement you'll get airier *better* sounding speech than from similarly priced dynamic mics.

A decent hypercardioid mic for the money is the Sennheiser E845.
http://www.soundexposure.com/store/Sennheiser-E-845-S-E845S.html?gclid=CIeL_cuRxL0CFScHwwodLrMAJA
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post #4 of 43
Quote:
Originally Posted by TwoCables View Post

He needs to look into a "dynamic" mic. Any "condenser" is going to pick up sound in a very similar way to the way our ears pick up sound. However, a dynamic mic "suffers" from the "proximity effect". The closer the mic is to the sound source, the louder it will be. At just 2-3 feet from a person's mouth, a dynamic mic is pretty much useless unless you are doing backup vocals and you need to sing loud for the proper tone but your volume needs to be very low. That should give you an idea of how great dynamic mics are in a noisy room when all you want to pick up is whatever is like say 2 feet away and basically directly in front of it.

Speaking of direction: there are different "pick-up patterns". The most common and probably the best is the Cardioid pattern. Here's a manufacturer's description of the different pick-up patterns:

http://www.heilsound.com/pro/mic-primer/pickup-patterns

Having said that, I am worried about one thing: will he be able to get within 1-2 feet away from the front of the mic and stay there while he's speaking?

Right, let's put some reality in to this post...

1. A condenser mic will not pick up more noise than a dynamic mic, assuming both have similar polar patterns. At least, not notably so.

2. The Proximity effect applies to all microphones that do not have an Omnidirectional pattern. It also does not make it "louder", it just boosts the bass frequencies. Good thing most mics roll those off.


@Lucid, I think you should link him to a US store? Also, that mic is XLR... Which I doubt his friend as the ability to properly use. X_x
Edited by DVLux - 4/3/14 at 6:50am
post #5 of 43
Quote:
Originally Posted by DVLux View Post


Right, let's put some reality in to this post...

1. A condenser mic will not pick up more noise than a dynamic mic, assuming both have similar polar patterns. At least, not notably so.

2. The Proximity effect applies to all microphones that do not have an Omnidirectional pattern. It also does not make it "louder", it just boosts the bass frequencies. Good thing most mics roll those off.

3. You don't need to be 2-3 feet away from any mic. All you need is to learn how to control your voice. This is especially true when your room isn't treated.

@Lucid, I think you should link him to a US store?

 

Where did I say that you need to be 2-3 feet away? I was making a point, so please read my post again.

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post #6 of 43
Quote:
Originally Posted by TwoCables View Post

Where did I say that you need to be 2-3 feet away? I was making a point, so please read my post again.

tongue.gif Fixed.
post #7 of 43
Quote:
Originally Posted by DVLux View Post


tongue.gif Fixed.

 

hehe :P

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post #8 of 43
Quote:
Originally Posted by DVLux View Post

Right, let's put some reality in to this post...

1. A condenser mic will not pick up more noise than a dynamic mic, assuming both have similar polar patterns. At least, not notably so.

2. The Proximity effect applies to all microphones that do not have an Omnidirectional pattern. It also does not make it "louder", it just boosts the bass frequencies. Good thing most mics roll those off.


@Lucid, I think you should link him to a US store? Also, that mic is XLR... Which I doubt his friend as the ability to properly use. X_x

True about the XLR, in my mind everyone's running an external interface with XLR + phantom power for some reason. biggrin.gif

Mics are certainly louder the closer you are to them, if I recall right it's a 6dB drop per every doubling of distance, which equates to a halving of SPL..

Most mics I've encountered do not have a high pass filter, it's a fairly common feature but far from ubiquitous.
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post #9 of 43
Btw, does anyone have any idea what the mic is going to be used for? (Games? Podcasts?)
Because I don't.
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post #10 of 43
Quote:
Originally Posted by Tiihokatti View Post

Btw, does anyone have any idea what the mic is going to be used for? (Games? Podcasts?)
Because I don't.

 

That's because he didn't say. So, let's ask:

 

Slayem: what is he going to be using the mic for?

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