John and Steve, Yes, you are right - I should have read the article to the end! :-) -- Kind regards, Doug Edworthy Mobile +44(0)7711 090 925 Tel +44(0)1435...
"Get in the Hearing Loop" is a joint project of the American Academy of Audiology (the Academy) and the Hearing Loss Association of America (HLAA). We are...
John; Thank you for writing the article. You suggest that specialists from the US should be part of the standards writing committees. I wholeheartedly agree...
Thank you Doug for providing this information. The current standard IEC 60118-4 seems to be a bit more flexible about the critical listening area noise levels....
In message <iaqfp2+nbm3@eGroups.com>, dated Wed, 3 Nov 2010, Bill ... It isn't a requirement; it is mentioned as an 'ideal' value, better than which is very...
Hi, folks. Quite a few years ago, I read that a certain kind of microphone could be problematic when used with an audio loop system. This may depend on how...
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Oval Window Audio/Nor...
norman@...
Nov 3, 2010 5:21 pm
Hi Dana, Dynamic mikes (and electric guitars) contain a coil of wire that can "pick up" the electromagnetic signal from loop systems. Here's an excerpt from...
For people interested in using their telecoils in their cars, whether or not with an installed audio loop, it may be of interest to learn more about the ...
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Oval Window Audio/Nor...
norman@...
Nov 3, 2010 5:28 pm
Sometimes the resultant electromagnetic feedback can be at such a high frequency...it may not be audible even to folks with good hearing. But...the potential...
Hi Norman Agreed, except that there are dynamic microphones available with a so called "hum bucking coil". Such microphones are designed to work near the...
Thanks, Norman and David. It looks to me like all electromagnetic microphones would need to be used with care (except for the ones with the humbucking coil),...
In message <20101103.092837.4844.12.HLAAbq@...>, dated Wed, 3 Nov ... I'm not sure that the list accepts attachments directly, The attachment appeared as...
In message <AANLkTikmvSQawxE8ah9XZVSbPJmUf-6FqVPXP0ooQU5Z@...>, dated ... The site that the message you quoted refers to is full of alarmism, ...
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Oval Window Audio/Nor...
norman@...
Nov 3, 2010 9:09 pm
Greetings David, Have you experienced significant "loop signal rejection" performance using hum bucking EMI rejecting mikes? In theory..."hum bucking" should...
Hello Dana and the list! Any "decent" dynamic microphone (not the $9 home recorder types) will have a "hum-bucking coil" in it which should balance out any...
Hello again ! Quoting -- I know of two cases where recording studios were set up underneath railway tracks, which use loop-type technology for signalling. The...
John, the reason I forwarded the article was because of the information about the electromagnetic fields in hybrid vehicles, not the health issues. Some cars...
Thanks for this useful info, Mike! You had written: "But if the electret condenser mic has a long enough cord, the cord can pick up the loop" Why is that? Is...
In message <EJEGJKKADOAJPODEOBDHMELPEFAA.mlangner@...>, dated Wed, ... You can suggest what you like, but these were passive loudspeakers with NOTHING...
Wow ! VERY interesting -- thanks for the update. That must be one horrific field! And if the speaker manufacturer had used ferrote toroid core coil forms ...
In message <EJEGJKKADOAJPODEOBDHOEMAEFAA.mlangner@...>, dated Wed, ... About 7 mA/m at 2.5 kHz. The 'induction loop' is 56.5 inches wide, of course, and...
