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" <[email protected]> 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. > [email protected] > > > > > > > On 22 Apr 2015, at 20:20, Jonathan Burton <[email protected]> wrote: > > > > > > > > On Wednesday, April 22, 2015, Peter Lennox <[email protected] > <mailto:[email protected]>> 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 [[email protected] <javascript:;>] On Behalf > Of Jörn Nettingsmeier [[email protected] <javascript:;>] > > Sent: 22 April 2015 19:20 > > To: [email protected] <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/> > > > > _______________________________________________ > > Sursound mailing list > > [email protected] <javascript:;> > > 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. If you believe this was sent > to you in error, please select unsubscribe. > > > > Unsubscribe and Security information contact: [email protected] > <javascript:;> > > For all FOI requests please contact: [email protected] <javascript:;> > > All other Contacts are at http://www.derby.ac.uk/its/contacts/ < > http://www.derby.ac.uk/its/contacts/> > > _______________________________________________ > > Sursound mailing list > > [email protected] <javascript:;> > > 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. > > -------------- next part -------------- > An HTML attachment was scrubbed... > URL: < > https://mail.music.vt.edu/mailman/private/sursound/attachments/20150422/2d4ee38f/attachment.html > > > _______________________________________________ > Sursound mailing list > [email protected] > https://mail.music.vt.edu/mailman/listinfo/sursound - unsubscribe here, > edit account or options, view archives and so on. > -------------- next part -------------- An HTML attachment was scrubbed... URL: <https://mail.music.vt.edu/mailman/private/sursound/attachments/20150422/706f8647/attachment.html> _______________________________________________ Sursound mailing list [email protected] https://mail.music.vt.edu/mailman/listinfo/sursound - unsubscribe here, edit account or options, view archives and so on.
