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- Newsgroups: rec.audio
- Path: sparky!uunet!timbuk.cray.com!walter.cray.com!daw
- From: daw@cray.com (Dave Wright)
- Subject: Re: Room treatments
- Message-ID: <1992Dec29.142410.3089@walter.cray.com>
- Lines: 28
- Nntp-Posting-Host: nothing.cray.com
- Organization: Cray Research, Inc.
- References: <19921229.062755.578@almaden.ibm.com> <1hppnvINNr9c@faatcrl.Faa.Gov>
- Date: 29 Dec 92 14:24:10 CST
-
- In article <1hppnvINNr9c@faatcrl.Faa.Gov> frankc@tgf.tc.faa.gov (Frank Coffman) writes:
- >BARRON@RHQVM14.VNET.IBM.COM writes:
- >
- >>Does anyone have any suggestions for frequency specific as well as
- >>general room treatments?
- >
- >>I measured the response of my room yesterday to find a 10db+ peak
- >>at 54hz (corresponds to my roughly 22 ft long room) plus the harmonics
- >>plus resonance at the room height and room width, but not as much a peak
- >>as due to the length.
- >
- >>This is what is giving my room the heavy/colored bass I have been hearing.
- >
- >>I know of room tunes, but I am sure there is a much less expensive way to
- >>replicate this technology, plus I want to specifically tune out the
- >>resonances for this particular room.
- >
- >How about a parametric equalizer?
-
- An equalizer can not compensate for effects the room has on the sound.
- RoomTunes only deals with reflection issues that affect high frequencies
- not modal problems. I'm curious as to how this was measured. A 10dB peak
- is unlikely from modal problems, maybe 6 but not 10dB.
-
- Refer to the book Master Handbook of Acoustics by ALton Everest for details
- on dealing with modal problems wiht Helmholtz Resonators or RPG Diffusors.
-
- Dave Wright
-