Does furniture obstruct modal resonances?

thadman · 2nd December 2008, 04:29 AM

Does furniture (ie couches, tables, etc) obstruct modal resonances (ie 20-150hz) or LF sound propagation. Suppose a subwoofer is placed beneath a couch or under a table, does the furniture attenuate its output or direct its energy to different areas of the room (ie excitement of different modes)?

CLS · 2nd December 2008, 04:54 AM

I think not. The furnitures are too small for the room modes. Or I guess they should be in particular proportion to make influences -- like a very large bed in a very small room, or something like that.

I've experienced many times that the tables (large flat reflective surfaces) near the speakers cause irregulations in midrange, say, 500Hz or so.

thadman · 2nd December 2008, 06:05 AM

What about LF propagation? Lets say a couch was placed atop a subwoofer array, would the array still sum the same as if the couch wasn't present?

2nd December 2008, 04:29 AM	#1
thadman diyAudio Member Join Date: Dec 2005 Location: west lafayette	Does furniture obstruct modal resonances? Does furniture (ie couches, tables, etc) obstruct modal resonances (ie 20-150hz) or LF sound propagation. Suppose a subwoofer is placed beneath a couch or under a table, does the furniture attenuate its output or direct its energy to different areas of the room (ie excitement of different modes)? __________________ "It is a profound and necessary truth that the deep things in science are not found because they are useful; they are found because it was possible to find them."

2nd December 2008, 06:05 AM	#3
thadman diyAudio Member Join Date: Dec 2005 Location: west lafayette	What about LF propagation? Lets say a couch was placed atop a subwoofer array, would the array still sum the same as if the couch wasn't present? __________________ "It is a profound and necessary truth that the deep things in science are not found because they are useful; they are found because it was possible to find them."

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2nd December 2008, 04:54 AM	#2
CLS diyAudio Member Join Date: Jun 2005 Location: Taiwan	I think not. The furnitures are too small for the room modes. Or I guess they should be in particular proportion to make influences -- like a very large bed in a very small room, or something like that. I've experienced many times that the tables (large flat reflective surfaces) near the speakers cause irregulations in midrange, say, 500Hz or so.

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