Thats interesting thanks Steve. I am looking for positives rather than negatives!
Jon Burton Research Student MSc University of York. jgb...@york.ac.uk > On 22 Apr 2015, at 21:21, Steven Boardman <boardroomout...@gmail.com> wrote: > > Hi Jon > > I add more sub (from main mix) into the lfe channel for broadcast in Dolby > cinemas. For the same reasons. It doesn't register so much on A weighted or > Dolby leq (m) meters. This means one can use more headroom of the system > and push the dynamics and overall spl in the room. I know a few engineers > that do this for broadcast in cinemas. > Not sure of any research of the damaging effects though. > > Best > > Steve > On 22 Apr 2015 20:53, "jon burton" <jgb...@york.ac.uk > <mailto:jgb...@york.ac.uk>> wrote: > >> There is a wealth of information regarding the negative effects of Low >> frequency noise but most of it relates either to vibration issues or sleep >> related problems. The low frequencies produced in concerts have had very >> little specific health related research. I recently had a long conversation >> with one of the major custom earplug manufacturers who was of the opinion >> that the low frequency levels were of little concern at rock and pop >> concerts and that is was the A weighted band that we should be concerned >> with. As I am looking at ways of reducing the A weighted levels by >> increasing energy in the sub 50Hz region I am looking for research done >> that may relate to this small but interesting area. >> I have over the past ten years been using sub to help produce a more >> immersive experience at low levels. I was wondering if any of the group had >> tried anything similar. I know there has been research done on gaming >> chairs using vibration but has anyone done work with sound waves? >> >> Thanks >> >> >> Jon Burton >> Research Student MSc >> University of York. >> jgb...@york.ac.uk >> >> >> >> >> >>> On 22 Apr 2015, at 20:20, Jonathan Burton <jgb...@york.ac.uk> wrote: >>> >>> >>> >>> On Wednesday, April 22, 2015, Peter Lennox <p.len...@derby.ac.uk >> <mailto:p.len...@derby.ac.uk <mailto:p.len...@derby.ac.uk>>> wrote: >>> I'd be interested in any references indicating deleterious effects on >> hearing of high amplitudes at LF, if anyone comes across any >>> cheers >>> ppl >>> Dr. Peter Lennox >>> Senior Fellow of the Higher Education Academy >>> Senior Lecturer in Perception >>> College of Arts >>> University of Derby >>> >>> Tel: 01332 593155 >>> ________________________________________ >>> From: Sursound [sursound-boun...@music.vt.edu >>> <mailto:sursound-boun...@music.vt.edu> <javascript:;>] On Behalf >> Of Jörn Nettingsmeier [netti...@stackingdwarves.net >> <mailto:netti...@stackingdwarves.net> <javascript:;>] >>> Sent: 22 April 2015 19:20 >>> To: sursound@music.vt.edu <mailto:sursound@music.vt.edu> <javascript:;> >>> Subject: Re: [Sursound] Infra sound & Sub bass. >>> >>> On 04/22/2015 06:49 PM, jon burton wrote: >>>> Hi I am new to the group but hoping someone may be able to help. I >>>> am looking at the positive effects of low frequencies in music, >>>> predominantly below 50Hz. This involves aural as well as >>>> mechanosensations. I am interested in seeing if reinforcing the low >>>> frequency content below 50Hz can help produce a more immersive >>>> listening experience at lower overall sound pressure levels >>>> (particularly when measured using the A weighting scale). Trouser >>>> flapping bass! I am struggling to find papers on the subject. Any >>>> suggestions are welcome! >>> >>> Well, it's not a secret that most live sound engineers, when faced with >>> a 99dB(A) rule, will mix into the A curve, i.e. crank up the bass a lot. >>> So there is plenty anecdotal evidence for more bass resulting in less >>> weighted sound pressure. For more perceived loudness, mixing in some >>> typical loudspeaker-like artificial distortion has prevented me from >>> getting beaten up at a "95 at the mixer" open air metal concert. Don't >>> ask me who came up with that rule, for that kind of music. >>> >>> But I've heard medical research hint at low frequency exposure having a >>> very damaging effect across the entire hearing spectrum, which means >>> that we are mixing around the rules but are actually endangering our >>> audiences. >>> Be sure to check the literature for this problem, to get a balanced view. >>> >>> -- >>> Jörn Nettingsmeier >>> Lortzingstr. 11, 45128 Essen, Tel. +49 177 7937487 >>> >>> Meister für Veranstaltungstechnik (Bühne/Studio) >>> Tonmeister VDT >>> >>> http://stackingdwarves.net <http://stackingdwarves.net/> >>> <http://stackingdwarves.net/ <http://stackingdwarves.net/>> >>> >>> _______________________________________________ >>> Sursound mailing list >>> Sursound@music.vt.edu <mailto:Sursound@music.vt.edu> <javascript:;> >>> https://mail.music.vt.edu/mailman/listinfo/sursound >>> <https://mail.music.vt.edu/mailman/listinfo/sursound> < >> https://mail.music.vt.edu/mailman/listinfo/sursound >> <https://mail.music.vt.edu/mailman/listinfo/sursound>> - unsubscribe here, >> edit account or options, view archives and so on. >>> >>> The University of Derby has a published policy regarding email and >> reserves the right to monitor email traffic. 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