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Author Topic: Brüel&Kjær and the Grateful dead  (Read 3298 times)

Jens Palm Bacher

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Brüel&Kjær and the Grateful dead
« on: April 26, 2011, 05:34:55 PM »

Look what I found:
http://www.bksv.dk/doc/BO0165.pdf

They also have this excellent primer on loudspeaker phase measurements;
http://www.bksv.dk/doc/17-198.pdf

« Last Edit: April 26, 2011, 05:39:29 PM by Jens Palm Bacher »
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Tom Young

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Re: Brüel&Kjær and the Grateful dead
« Reply #1 on: April 27, 2011, 03:30:52 PM »

Look what I found:
http://www.bksv.dk/doc/BO0165.pdf

They also have this excellent primer on loudspeaker phase measurements;
http://www.bksv.dk/doc/17-198.pdf

Great stuff.

About 10 years ago I was 'whined at' by someone who worked with Bruel and Kjaer back when this was going on and he was upset they had not been given credit and felt that Meyer had ripped the idea off. Sorry..... wrong.

But it is a very good thing to give them some credit and also see how far along all of them (B&K, the Dead, Meyer) were and (perhaps) how "late" the rest of us were. Actually..... "we" were not late (by much). We just couldn't afford it  ;)

It is actually a little disconcerting that issues such as the futility of fixed-filter, fractional octave based equalization were identified by such credible folks so long ago.

Oy.
« Last Edit: April 27, 2011, 03:41:57 PM by Tom Young »
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Tim McCulloch

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Re: Brüel&Kjær and the Grateful dead
« Reply #2 on: April 27, 2011, 06:28:27 PM »

It is actually a little disconcerting that issues such as the futility of fixed-filter, fractional octave based equalization were identified by such credible folks so long ago.

Oy.

We are privileged to stand on the shoulders of giants.

I remember the interviews mentioned in one of the linked pieces... Dan Healey, John Meyer and "Dr. Don" Pearson (not mentioned by B&K).  They talked about "time" in a way that I immediately internalized.  On the input side, Ed Long and Ron Wickersham were talking about time, too, with their pressure boundary microphone.  All had a direct impact on my way of thinking about audio in general and loudspeaker systems in particular.

I'm still learning, and I find the writings of older giants to make perfectly good shoulders.  It's a great time to be in audio.

Have fun, good luck.

Tim Mc
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Chris Porto

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Re: Brüel&Kjær and the Grateful dead
« Reply #3 on: April 30, 2011, 07:11:36 PM »

Really cool.. does anyone have a link that explains the math behind fast Fourier transform analysis in more detail?
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Charlie Zureki

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Re: Brüel&Kjær and the Grateful dead
« Reply #4 on: April 30, 2011, 07:39:29 PM »

Really cool.. does anyone have a link that explains the math behind fast Fourier transform analysis in more detail?

  Wiki it!

   Hammer
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Re: Brüel&Kjær and the Grateful dead
« Reply #4 on: April 30, 2011, 07:39:29 PM »


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