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In Reply to: RE: 360° speaker users: flat pink noise response? posted by BigguyinATL on January 24, 2017 at 08:27:14
"a reverberant component that roles off with frequency""I work for Bruel & Kjaer"...
Two things:
A real-time continuous pink noise source has useful aspects for analyzing the soundfield in a room, and outdoors. But, in a home living room, it doesn't tell us much about the important aspects of what we hear. A swept sine wave tells us much more. A "chirp", aka TEF/ETF, tells us even more. The IRIS system tells us yet more, since it contains directional information.
So, except for outdoor systems, a pink noise source is fairly crude at analyzing the soundfield.
Secondly, since you work for a noise/sound/vibration equipment manufacturer, and I don't mean to denegrate either B&K or you, you really should use the right word: It's "rolls", not "roles". This kind of incorrect word usage blows a big hole in your credibility. It's akin to saying "base" instead of "bass".
:)
Edits: 01/24/17 01/24/17Follow Ups:
No worries, I'll roll with the punches.Of course, a processing technique (there all all kinds) that allows you to separate Direct and reflected arrivals are much better than continuous pink noise that the OP asked the question about. My experience in the field - and even ancient old B&K application notes say you can do a fine job with pink noise...
Check out the old real time 1/3 octave analyzer on the cover (the world's first digital filter RTA) and used for the measurements
"The hardest thing of all is to find a black cat in a dark room, especially if there is no cat" - Confucius
Edits: 01/24/17
Hahahahaha! Glad you're a good sport!Excellent call on the Application Note!
(You did see my "Caption this pic" post, right?)
:)
Edits: 01/24/17
Caption this is great free publicity !
FYI that old measurement setup on the cover would have set you back about $40K in 1974 dollars!
I was graduating high school that year - selling Wi-Fi that summer for Cal Stereo in LA
"The hardest thing of all is to find a black cat in a dark room, especially if there is no cat" - Confucius
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