Article View: sci.electronics
Article #3085IR Headsets
From: Ken A. Nishimura
Date: Sun, 17 Sep 1989 01:14
Date: Sun, 17 Sep 1989 01:14
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I have noticed that certain symphony halls/opera houses are outfitted with IR listening devices for the hearing impaired. (Sennheiser comes to mind). Does anyone know if they are IR, or RF. Are the similar to the Koss wireless headphones? I am curious to know what kind of modulation they use and the frequencies. Will summarize and post if information forthcomes. -ken
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arc1-ca.pugleaf.net!utzoo!attcan!utgpu!jarvis.csri.toronto.edu!mailrus!tut.cis.ohio-state.edu!ucbvax!janus.Berkeley.EDU!kennishShow Full Headers
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Path: arc1-ca.pugleaf.net!utzoo!attcan!utgpu!jarvis.csri.toronto.edu!mailrus!tut.cis.ohio-state.edu!ucbvax!janus.Berkeley.EDU!kennish From: kennish@janus.Berkeley.EDU (Ken A. Nishimura) Newsgroups: sci.electronics Subject: IR Headsets Message-ID: <31345@ucbvax.BERKELEY.EDU> Date: 17 Sep 89 01:14:29 GMT Sender: usenet@ucbvax.BERKELEY.EDU Reply-To: kennish@janus.Berkeley.EDU (Ken A. Nishimura) Distribution: usa Organization: University of California, Berkeley Lines: 10