Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!uunet!optilink!elliott
From: elliott@optilink.UUCP (Paul Elliott x225)
Newsgroups: sci.electronics
Subject: Re: Hissing from tape recorders ?
Summary: AGC... isn't it recording mode only?
Message-ID: <3392@optilink.UUCP>
Date: 12 Apr 90 16:29:17 GMT
References: <3190@moondance.cs.uq.oz.au> <21000070@m.cs.uiuc.edu>
Organization: Optilink Corporation, Petaluma, CA
Lines: 17

In article <21000070@m.cs.uiuc.edu>, irwin@m.cs.uiuc.edu writes:
> I have serviced a lot of tape recorders. One thing that I noted was
> that most recorders make use of an automatic volume control circuit.
> This is to take up part of the differences in record level from tape
> to tape. [... describes why with no input, AGC jacks up the gain...]

Correct me in I'm wrong, but isn't AGC only for recording?  I assume we're
not discussing Dolby or other companding modes, just the normal AGC used
in the cheaper tape recorders (like the ones I have).

Still no answer as to why a particular machine would be especially noisy...


-- 
      Paul M. Elliott      Optilink Corporation     (707) 795-9444
            {uunet, pyramid, pixar, tekbspa}!optilink!elliott
    "Less than perfect, that's what I've been aiming for all along."