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Article #7696Re: Audible effects in solid-state electronics
From: Knudsen
Date: Wed, 25 Jan 1989 19:25
Date: Wed, 25 Jan 1989 19:25
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A year ago I was using a Sun 3/xx workstation, and it seemed like I could hear the pixels hitting the raster! Turned out I heard the same sizzling squeaky sounds during non-graphic but CPU-intensive tasks like C compiles and nroffs. So the sound must have been coming from the CPU, RAM, or associated glue logic (all TTL I'd think, for the glue). Some folks thought I was nuts, others could hear it. I now have a Sun 3/50 with color monitor, and can't hear it. BTW, I don't think we're talking about switching power supply noises; I doubt any CD player would use these. -- Mike Knudsen Bell Labs(AT&T) att!ihlpl!knudsen "Five hundred twelve K bytes of RAM ... out of control ... "
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arc1-ca.pugleaf.net!utzoo!attcan!uunet!lll-winken!ncis.llnl.gov!helios.ee.lbl.gov!pasteur!ames!xanth!ukma!tut.cis.ohio-state.edu!osu-cis!att!ihlpl!knudsenReferences:
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Path: arc1-ca.pugleaf.net!utzoo!attcan!uunet!lll-winken!ncis.llnl.gov!helios.ee.lbl.gov!pasteur!ames!xanth!ukma!tut.cis.ohio-state.edu!osu-cis!att!ihlpl!knudsen From: knudsen@ihlpl.ATT.COM (Knudsen) Newsgroups: sci.physics,sci.electronics Subject: Re: Audible effects in solid-state electronics Summary: Me too Keywords: VAX FPA CD Message-ID: <8650@ihlpl.ATT.COM> Date: 25 Jan 89 19:25:56 GMT References: <9359@nsc.nsc.com> Organization: AT&T Bell Laboratories - Naperville, Illinois Lines: 14