Remember the RCA Victor record album picture of the dog listening to the Victrola - his master's voice? (EMI record label in UK).
Ken Javor Phone: (256) 650-5261 > From: John Woodgate <jmw1...@btinternet.com> > Reply-To: John Woodgate <jmw1...@btinternet.com> > Date: Fri, 26 Aug 2016 22:47:23 +0100 > To: <EMC-PSTC@LISTSERV.IEEE.ORG> > Subject: Re: [PSES] Fuses can affect performance other than safety! > > Interchannel phase differences *measurably* alter the stereo image. Phase > difference between voltage and current has no effect unless a non-minimum > phase device is involved. > > 'Live versus recorded' demos (with good results) date way back to the early > 1950s, first in USA and soon after in Britain. > > With best wishes DESIGN IT IN! OOO - Own Opinions Only > www.jmwa.demon.co.uk J M Woodgate and Associates Rayleigh England > > Sylvae in aeternum manent. > > > -----Original Message----- > From: Peter Tarver [mailto:ptar...@enphaseenergy.com] > Sent: Friday, August 26, 2016 8:58 PM > To: EMC-PSTC@LISTSERV.IEEE.ORG > Subject: Re: [PSES] Fuses can affect performance other than safety! > > Some of the articles I'd read in some magazine or other (copies available if > you know Mr. Peabody and his boy Sherman), stated some equipment designers > were paying extraordinarily close attention to maintaining the phase > relationships between channels and between voltage and current, as signal > passed through a system. Claims were made that doing so improved the > accuracy of the reproduced sound. > > I heard stories in the early 1980s of people standing around rooms, dropping > a set of keys onto a glass coffee table and recording it, then everyone else > closing their eyes while someone made them guess if the next sound they > heard sound was recorded or live. Folklore to people like me, but gospel to > some audiophiles. > > > Peter Tarver > >> -----Original Message----- >> From: Ken Javor >> [mailto:ken.ja...@emccompliance.com] >> Sent: Thursday, August 25, 2016 17:32 >> >> A very simple and inexpensive means of arranging staging is to >> introduce delays between left and right channels such that the sound >> appears to be coming from a particular direction. This is much easier >> to accomplish with headphones than loudspeakers, but it's the same >> principle. >> I've seen a >> convincing demonstration at the US Army Aeromedical Research Lab >> (USAARL), where something like five different radios can be going at >> once and a helicopter crew have to be able to intelligently respond in >> a crisis situation, and what people normally do in a situation like >> that where they can't pay attention to everyone is they zero in on one >> conversation and ignore the others, and to do that we use >> directionality. >> Originally there >> was none and the headphones could be blaring all channels at once, and >> the crew would simply turn off he radios they didn't want to hear, >> which wasn't good. By introducing specific delays for each radio, the >> various radios could be made to sound as if one conversation was from >> 12:00, another at >> 3:00 another at 6:00 and so on. That allowed the crew to mentally >> focus in on the conversation of interest and tune out the others >> temporarily. But that is all software and digital circuitry: no fancy >> audiophile equipment necessary. >> >> Ken Javor >> Phone: (256) 650-5261 >> >> >>> From: Peter Tarver <ptar...@enphaseenergy.com> >>> Reply-To: Peter Tarver <ptar...@enphaseenergy.com> >>> Date: Thu, 25 Aug 2016 21:37:04 +0000 >>> To: <EMC-PSTC@LISTSERV.IEEE.ORG> >>> Conversation: [PSES] Fuses can affect performance other >> than safety! >>> Subject: Re: [PSES] Fuses can affect performance other >> than safety! >>> >>> I have heard of and known a few audiophiles that go to >> great lengths to have >>> sound reproduced as accurately as possible and spend >> enormous sums to >>> accomplish that. >>> >>> The term that was most silly in my view was holography; >> but I understood what >>> was meant. The aforementioned audiophiles claim to >> recreate the spatial >>> relationship between the physical locations musical >> instruments when recorded. >>> The needs for recording and reproduction are entirely >> impractical and don't >>> seem achievable for simple stereophonics, so it seems on >> the bovine >>> scatological side of the olfactory sense. >>> >>> BUT, I have stood in and moved about a room that was >> carefully put together. >>> In one part of the room one instrument (say clarinet) >> could be heard more >>> distinctly than in other areas, and so on for other >> instruments, giving the >>> impression that one was moving from musician to >> musician on a sound stage. >>> >>> Pretty clever, but outlandishly expensive. >>> >>> >>> Peter Tarver >>> >>>> -----Original Message----- >>>> From: Ken Javor >>>> [mailto:ken.ja...@emccompliance.com] >>>> Sent: Monday, August 22, 2016 19:55 >>>> >>>> Next, the terms are not entirely gibberish. They may be unfamiliar >>>> to those not in the hi-fi hobby, but I can make >> out >>>> all but one of these terms: >>>> >>>> Sound staging means stereo separation. Or whatever passes fro that >>>> in the age of five and six different >> channels (I >>>> haven't kept up with this stuff since it departed from two >>>> channels). I don't know how a fuse aids or degrades channel >>>> separation, but at least we can understand what >> is >>>> being claimed. >>>> >>> >>> The information contained in this message may be >> privileged and confidential. >>> It is intended to be read only by the individual or entity to >> whom it is >>> addressed or by their designee. If the reader of this >> message is not the >>> intended recipient, you are on notice that any distribution >> of this message, >>> in any form, is strictly prohibited. If you have received this >> message in >>> error, please immediately notify the sender and delete or >> destroy any copy of >>> this message! >>> >>> - >>> ---------------------------------------------------------------- >>> This message is from the IEEE Product Safety Engineering >> Society emc-pstc >>> discussion list. To post a message to the list, send your e- >> mail to >>> <emc-p...@ieee.org> >>> >>> All emc-pstc postings are archived and searchable on the >> web at: >>> http://www.ieee-pses.org/emc-pstc.html >>> >>> Attachments are not permitted but the IEEE PSES Online >> Communities site at >>> http://product-compliance.oc.ieee.org/ can be used for >> graphics (in well-used >>> formats), large files, etc. >>> >>> Website: http://www.ieee-pses.org/ >>> Instructions: http://www.ieee-pses.org/list.html >> (including how to >>> unsubscribe) >>> List rules: http://www.ieee-pses.org/listrules.html >>> >>> For help, send mail to the list administrators: >>> Scott Douglas <sdoug...@ieee.org> >>> Mike Cantwell <mcantw...@ieee.org> >>> >>> For policy questions, send mail to: >>> Jim Bacher: <j.bac...@ieee.org> >>> David Heald: <dhe...@gmail.com> >> >> - >> ---------------------------------------------------------------- >> This message is from the IEEE Product Safety Engineering Society >> emc-pstc discussion list. To post a message to the list, send your >> e-mail to <emc-p...@ieee.org> >> >> All emc-pstc postings are archived and searchable on the web at: >> http://www.ieee-pses.org/emc-pstc.html >> >> Attachments are not permitted but the IEEE PSES Online Communities >> site at http://product-compliance.oc.ieee.org/ >> can be used for graphics (in well-used formats), large files, etc. >> >> Website: http://www.ieee-pses.org/ >> Instructions: http://www.ieee-pses.org/list.html (including how to >> unsubscribe) List rules: http://www.ieee-pses.org/listrules.html >> >> For help, send mail to the list administrators: >> Scott Douglas <sdoug...@ieee.org> >> Mike Cantwell <mcantw...@ieee.org> >> >> For policy questions, send mail to: >> Jim Bacher: <j.bac...@ieee.org> >> David Heald: <dhe...@gmail.com> > The information contained in this message may be privileged and > confidential. It is intended to be read only by the individual or entity to > whom it is addressed or by their designee. If the reader of this message is > not the intended recipient, you are on notice that any distribution of this > message, in any form, is strictly prohibited. If you have received this > message in error, please immediately notify the sender and delete or destroy > any copy of this message! > > - > ---------------------------------------------------------------- > This message is from the IEEE Product Safety Engineering Society emc-pstc > discussion list. To post a message to the list, send your e-mail to > <emc-p...@ieee.org> > > All emc-pstc postings are archived and searchable on the web at: > http://www.ieee-pses.org/emc-pstc.html > > Attachments are not permitted but the IEEE PSES Online Communities site at > http://product-compliance.oc.ieee.org/ can be used for graphics (in > well-used formats), large files, etc. > > Website: http://www.ieee-pses.org/ > Instructions: http://www.ieee-pses.org/list.html (including how to > unsubscribe) List rules: http://www.ieee-pses.org/listrules.html > > For help, send mail to the list administrators: > Scott Douglas <sdoug...@ieee.org> > Mike Cantwell <mcantw...@ieee.org> > > For policy questions, send mail to: > Jim Bacher: <j.bac...@ieee.org> > David Heald: <dhe...@gmail.com> > > - > ---------------------------------------------------------------- > This message is from the IEEE Product Safety Engineering Society emc-pstc > discussion list. To post a message to the list, send your e-mail to > <emc-p...@ieee.org> > > All emc-pstc postings are archived and searchable on the web at: > http://www.ieee-pses.org/emc-pstc.html > > Attachments are not permitted but the IEEE PSES Online Communities site at > http://product-compliance.oc.ieee.org/ can be used for graphics (in well-used > formats), large files, etc. > > Website: http://www.ieee-pses.org/ > Instructions: http://www.ieee-pses.org/list.html (including how to > unsubscribe) > List rules: http://www.ieee-pses.org/listrules.html > > For help, send mail to the list administrators: > Scott Douglas <sdoug...@ieee.org> > Mike Cantwell <mcantw...@ieee.org> > > For policy questions, send mail to: > Jim Bacher: <j.bac...@ieee.org> > David Heald: <dhe...@gmail.com> - ---------------------------------------------------------------- This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to <emc-p...@ieee.org> All emc-pstc postings are archived and searchable on the web at: http://www.ieee-pses.org/emc-pstc.html Attachments are not permitted but the IEEE PSES Online Communities site at http://product-compliance.oc.ieee.org/ can be used for graphics (in well-used formats), large files, etc. Website: http://www.ieee-pses.org/ Instructions: http://www.ieee-pses.org/list.html (including how to unsubscribe) List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas <sdoug...@ieee.org> Mike Cantwell <mcantw...@ieee.org> For policy questions, send mail to: Jim Bacher: <j.bac...@ieee.org> David Heald: <dhe...@gmail.com>
