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Flutter Echo [message #64458]

Sat, 23 October 2010 09:03

audioaudio90
Messages: 623
Registered: October 2010

Illuminati (1st Degree)

How do you deal with nasty flutter echoes? They set my teeth on edge! In non-audio rooms, I usually put up a picture or two and that gets rid of it.

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Re: Flutter Echo [message #64460 is a reply to message #64458]

Sat, 23 October 2010 12:20

Wayne Parham
Messages: 18787
Registered: January 2001

Illuminati (33rd Degree)

I find HF "slap" (or multiple slaps, i.e. flutter echo) to be a problem in rooms with a lot of hard surfaces and little furniture or carpeting. Fortunately, most people don't set up their sound systems or home theaters in rooms like that, although I can recall one room with hardwood floors that did it very badly.

Obvious stuff helps a lot. Bookshelves placed on the opposite wall from the mains provide a natural diffusion that breaks up the rear reflection. Using directional speakers and toeing them in helps reduce side reflections. Carpeting helps reduce reflections from the floor, at least at frequencies above the modal range. That only leaves ceiling slap and my best advice there is the same as what you do to reduce side reflections - use directional speakers - with limited HF output at large vertical angles.

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Re: Flutter Echo [message #64461 is a reply to message #64460]

Sat, 23 October 2010 13:12

audioaudio90
Messages: 623
Registered: October 2010

Illuminati (1st Degree)

Yeah speaker placement helps, but I didn't think about that because the only time I find bad flutter echoes, it's in some random place that doesn't have speakers, like a hallway.

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Re: Flutter Echo [message #64670 is a reply to message #64461]

Sat, 13 November 2010 15:39

Scoot
Messages: 35
Registered: November 2010

Baron

We had that problem too, in a room with very large windows and glass French doors. We finally put curtains on all of the windows, including the doors. It helped alot.

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Re: Flutter Echo [message #64761 is a reply to message #64458]

Fri, 19 November 2010 02:01

Scots Rich
Messages: 15
Registered: November 2010
Location: Edinburgh

Chancellor

Obviously speaker placement and room padding (carpets, soft chairs) help - also create a non-parallel room. If you can't or don't want to build non-parallel walls just add bookshelves and film them!

Rich

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