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Post by NigelSpiers on Mar 19, 2016 12:57:57 GMT
Hi,
I have listened to a series of Bass test tones in my studio and it has a marked and annoying peak in the 5 test tones between 392 and 493 Hz.
This peak can be heard at all positions in the room and there is already significant acoustic treatment in the room.
What sort of Acoustic treatment best addresses this frequency range and where do I place this treatment in my room?
Thanks for your assistance.
Best Regards
Nigel
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Post by Ethan Winer on Mar 19, 2016 17:34:19 GMT
Absorbers only 1-2 inches thick will target 400 Hz just fine. I'm suspicious whether this is really your problem. Is it possible you have a vase or picture frame something else that's ringing?
--Ethan
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Post by starandchlorisse on Apr 14, 2016 4:01:49 GMT
I have the same problem a  at 350 Hz in my frequency response graph and I have a lot of acoustic treatment - Below 350 hz the responce is between a 4- 6 db window ...and generally the entire curve is somehow flat - I have not found out yet . Is the garage mechanism on the ceiling ? I tested the radiator I put a panel at the front and nothing changed ---or the Landry or drier ? drive.google.com/folderview?id=0B1KP5jusZIeEUDl2MUttYVlhYkU&usp=sharing://You can see the pictures . How you adress the problem - you just put felt on the objects or something else ? If of course this is the problem / |
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Post by Hexspa on Apr 14, 2016 21:27:45 GMT
Starandchlorisse your speakers are toed in too acutely. Your ears should sit just inside of an equilateral triangle made from the angles of your tweeters. Your speakers are pointing in front of your nose.
Nigel, I can only guess it's boundary interference. So if every 1/4 wavelength is a node and every 1/2 is an antinode and your peaks (antinodes) are at 392Hz (G4) and 493Hz (B4) then just don't play G major!
lol jk
Your speakers are probably some multiple of 44cm / 17.32in or 34.96 / 13.76in from a reflecting boundary - probably your desk.
I need to brush up on my mode theory but you can use a mode calculator to see if your room's dimensions are a factor.
I think modes and nodes are related.. Modes are ringing, nodes are nulls and antinodes are peaks...
ugh. I'm going to have to go over all of this soon anyway.
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at 350 Hz in my frequency response graph and I have a lot of acoustic treatment -
