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...or do you have small acoustic reflections from walls?
Do you find it important to kill very small echo/flutters? even if they are not triggered by the speakers from where they are placed.
When I walk from one end of my room to the other and klap my hands I have nothing at the end with the speakers, but at the other end I have a small notisable Flutter/echo. I have tested and varyfied that this Flutter/echo does not get triggeret from the end with the speakers.
I think that i can live with it compared to how it's going to sound with absorbers all over.
Basicly my question is, do you find it ok to have little reflections you only hear if you klap your hands(when you talk you don't hear it) in the studio?

The reason I placed this in the ME forum was to get answers from ME's.

Best Regards.

Comments

Michael Fossenkemper Mon, 03/22/2004 - 06:36

I personally hate flutter echoes. to me it completely screws up the upper mids and blurs the image. If they are there, you are hearing them unless your listening very quitely. If you go into places like sterling, they have relatively live rooms with hard surfaces. Not my personal taste but it seems to work for them. The rooms however do not have any noticeable flutter echoes, more uniform. From my experience, dispersion really helps. I had a flutter echoe in the back of my room when I first built it and I corrected it by putting diffusors on the back wall and putting some compressed fiberglass angles around that. It eliminated the flutter and improved the sound tremendously. The imaging snapped back into place and the midrage focused more.

Thomas W. Bethel Mon, 03/22/2004 - 07:39

My acoustical designer, Don Mitchell, came up with a very interesting solution to flutter echos.

The floor is carpet over cement and the wall and ceiling in my room are dry wall. What he did (besides all the acoutical design) was to suggest hanging Berber rugs on the walls covered by drapes. These are spaced around the room at intervals so there is some reflective and some non reflective surfaces. The drapes are about 5 inches into the room over the Berber carpeting and they take away the flutter echos without getting into problems with frequency absorption. If you want to see a color picture of our room shot with a fish eye lens go to http://www.dsmassociates.com/
and the section #6 under Who We Are. Hope this helps. It sure works GREAT!

Thomas W. Bethel Mon, 03/22/2004 - 14:31

Ammitsboel wrote: Thanks Thomas,

But what is Berber rugs and drapes?
I'm not familiar with these words :-(

/Regards

Berber rugs are rugs that are basically knoted fiber. They are sometimes called oriental rugs but berber is much courser and a lot less expensive.

Here is a link with pictures http://www.lowes.com/lkn?action=productDetail&productId=174497-102-748-26

Drapes are curtains or window coverings made out of cloth

Here is a link with pictures http://www.potterybarn.com/cat/pip.cfm?sid=PBW26ZXLKYMYYJWGVQ1F00FTSPOJR3TD200403221430&refurl=&gids=p4306&ftest=1&cm%5Fven=MSN&cm%5Fpla=Datafeed&cm%5Fite=All%20Products&cm%5Fcat=Shopping&bnrid=0460012&flash=on

Hope this helps.

Michael Fossenkemper Tue, 03/23/2004 - 04:58

what's a normal living room? So if I live in the southwest I should build my room with terracotta tiles. or maybe I should build a log cabin room for those in colorado. Maybe have a really tiny room for new yorkers. what about those that listen to music in the shower? or on headphones, on a plane, in an elevator, or in a car? this can get really expensive to mimic all of these rooms. I know, i'll build a neutral room and it'll translate to all of them.

Ammitsboel Sat, 04/03/2004 - 00:32

Thanks!
I looked into some different rugs but I find them all too absorbing for my room.
Then I just lovered one of my two 100x60cm rockwool modules and it fixed the flutter echo.... :wink:

I've tried having more absorbtion in my room than there is now and that gives to me something that seems like a clearer sound but it is also "rock dead" and cant reproduce microdynamics and image width correctly, so that's why I have settled for a few but good modules that have been placed carefully after several tests with my sound system.

Best Regards,
Henrik

anonymous Wed, 04/28/2004 - 06:51

My room has a nice balance to it. George A. designed it. It's hardly dead but what was more interesting about it is how he came to the final design. It was not as much math and measurement but more listening. He had the basic design and then employed 3 different acoustic wall hangings (for lack of a better term) of uniform size each one having a different type of surface under the cloth which is placed over it. Then, we listen to music and balanced the room by moving these panels. He was able to kill unwanted reflections and at the same time create a room which breaths (my term) with the music. 2 things about this, a: The front of the room is hardly dead even though there is a area rug in front of the desk nor is the back of the room very live. b: The room itself doesn't hold for different types of monitors. I was recently checking out new speakers and we employed George and he changed the room up a little. It speaks to the different ways speakers "speak".

Mark Wilder
Sony NY

anonymous Wed, 04/28/2004 - 10:28

The Sherwood Sax amps are designed by Doug Sax's brother. These are 150W monoblock tube amps.

The colsole...I still have the monitor section which the console was paired to. The amps in the A bus started to sound different than the amps in the B bus and it was hard to maintain it, so it went. The last I heard it was being transformed into a LCR mixer for 3 track work.

I have never found my room too live and it's always fun to have George come back and listen in the room. He finds it to be a special place.

Mark Wilder
Sony NY

Ammitsboel Wed, 04/28/2004 - 12:55

Thanks Mark for your interesting coments on room design!

I have a fairly hard and "not as big as i would like it to be" room, but I really feel that I've done a very good job in using as little absorbsion as possible and used the right places.
I started with a fine B&K analyser i used for a month only to find out that my ears was doing a much better job in placing different modules the right places and getting rid of others.

So you are using tube monoblocks too! :-)
That's a rare sight in here... not to speak of the whole industry!

Best Regards

Don Grossinger Wed, 04/28/2004 - 13:21

I have just changed rooms (and facilities too). I have just moved across the river to Masterdisk in NYC. My room here is smaller than what I was used to before, but better designed. I have Dunlavy SC-V monitors. The side walls have proper absorbtion and the rear wall has diffusers. The overall acoustic is on the slightly less reflective side but not dead. I am doing a lot of listening to "known" program material to get an understanding of the room / speaker ineraction and acoustics. I have already done some sessions and checked out the EQed masters at home, etc. and they sounded fine. I am expecting the transition to be a smooth one.