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Author Topic: DPA d:VICE just announced  (Read 26058 times)

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Offline jerryfreak

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Re: DPA d:VICE just announced
« Reply #270 on: July 09, 2018, 10:17:35 PM »
FWIW i recorded a 4 hour ~4GB file (24/44.1) with my iphone SE just fine. (it was actually 3971 MB so i dunno what happens at 4GB). im pretty sure voice recorder pro can auto-split as well

Offline bhoy

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Re: DPA d:VICE just announced
« Reply #271 on: July 14, 2018, 09:37:21 PM »
jerryfreak -

I really like the sound of the 4061's and the d:vice in that sample.  Which do you prefer?  Maybe the main difference is in the location - row 2 vs sbd area?

Bill

Offline jerryfreak

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Re: DPA d:VICE just announced
« Reply #272 on: July 15, 2018, 09:09:59 AM »
i hate chatter so its a rare recording where you can pull it off with the omnis

they def have a more open sound in that recording.

ive found the omnis are pretty resistant to wind noise, i had no screens on those, but the schoeps had the fatty B&K windscreens which prob muffle a bit

Offline morst

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Re: DPA d:VICE just announced
« Reply #273 on: July 17, 2018, 09:57:19 PM »
ive found the omnis are pretty resistant to wind noise, i had no screens on those...
Yep, the omni mics lack the "Proximity Effect" that cardioid and other directional mics possess, where nearby sources come through with more bass. For whatever scientific reason, wind noise gets the boost on directional mics as well. I guess when it hits the mics, it's pretty close!!?
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Offline jerryfreak

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Re: DPA d:VICE just announced
« Reply #274 on: July 17, 2018, 10:56:11 PM »
well i think its because all mics are pressure gradient transducers and wind does funky things when there are vents to selectively allow sounds in the back of a capsule that make shit go wild

Offline Gutbucket

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Re: DPA d:VICE just announced
« Reply #275 on: Yesterday at 10:55:47 AM »
well i think its because all mics are pressure gradient transducers and wind does funky things when there are vents to selectively allow sounds in the back of a capsule that make shit go wild

Not all mics are pressure gradient transducers. But the shit go wild part is pretty much spot on. True pressure omnis (such as all DPA omnis) are not pressure gradient transducers, although electrically-switched dual-capsule microphones with an omni pattern are, and all directional microphones are to varying degrees.

> Pressure transducer = diaphragm open to sound on one side and closed to sound on the other, providing a pressure reference measurement against the closed side = omni
> Pressure gradient transducer = diaphragm open to sound on both sides, providing a pressure differential measurement between the two sides = bi-directional

Any directional microphone with a pickup pattern in between omni and bidirectional is a combination of those two basic principles.  A cardioid combines equal amounts of both. But you probably already knew all this.

How this is implemented varies.  Because the sound pressure gradient at low frequencies is weak, the diaphragm tension of pressure gradient microphones needs to be less than that of a pressure omni to achieve appropriate sensitivity at low frequencies.  But at low frequencies, turbulent wind pressure difference between the front and back sides of the diaphragm can easily exceed sound pressure difference, making pressure gradient mics more susceptible to wind noise. The diaphragm tension of pressure omnis can be higher, making the restoring force on the diaphragm correspondingly greater, which helps reduce handing and wind noise. 

Link to an article by Chris Woolf which covers this- How to reduce wind noise and vibration
http://microphone-data.com/media/filestore/articles/Wind%20and%20vibration-10.pdf?_ga=2.213787796.166413374.1531921444-569004240.1531921444


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