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Car Audio Quirk [message #74319]

Thu, 01 November 2012 17:00

Nymeria
Messages: 508
Registered: April 2011

Illuminati (1st Degree)

When I lower the rear windows on my van, it produces odd pressure waves that you half hear, half feel on your eardrums. I only hear it when we're going about 35-40 miles per hour, but it's rather annoying.

Do you have any strange audio quirks in your vehicle?

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Re: Car Audio Quirk [message #74321 is a reply to message #74319]

Thu, 01 November 2012 17:14

Wayne Parham
Messages: 18869
Registered: January 2001

Illuminati (33rd Degree)

This is called cavity resonance. All cars do that, and in fact, a similar property is used in bass-reflex loudspeakers.

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Re: Car Audio Quirk [message #74340 is a reply to message #74321]

Fri, 02 November 2012 11:53

Nymeria
Messages: 508
Registered: April 2011

Illuminati (1st Degree)

I didn't realize all cars did it. I mean, I've heard wind buffeting through cars before, but I've never heard it so loudly or felt it so much.

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Re: Car Audio Quirk [message #74341 is a reply to message #74340]

Fri, 02 November 2012 14:25

Wayne Parham
Messages: 18869
Registered: January 2001

Illuminati (33rd Degree)

I've found it happens at different speeds and window locations and openings on different cars. Some seem to do it really badly when one back window is rolled down. Others do it worst when a front window is partly rolled down. The flap in the front of a sunroof reduces this effect when the sunroof is open, because it directs wind over the top instead of down into the cabin.

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Re: Car Audio Quirk [message #74602 is a reply to message #74341]

Mon, 26 November 2012 18:20

iLoveiPod
Messages: 210
Registered: April 2012

Master

So if this is normal, is there any way to stop it, other than rolling the windows back up? Is there any way to reduce it or make it less noticeable?

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Re: Car Audio Quirk [message #74621 is a reply to message #74319]

Wed, 28 November 2012 08:51

Azuri
Messages: 315
Registered: November 2012

Grand Master

You might try cracking all the windows. That way the "pressure" isn't originating from one spot, but all around the vehicle. Maybe evening it out like that will help with the sound it makes

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