doubletalk still going strong

[Glenn at home]

I use my dectalk express in the line-in on my sound card.
It gives it a much richer sound, and my dectalk has never really been loud
enough.

Glenn

----- Original Message ----- 
From: "Janina Sajka" <janina at rednote.net>
To: "Speakup is a screen review system for Linux." <speakup at braille.uwo.ca>
Sent: Friday, November 05, 2004 4:13 AM
Subject: Re: doubletalk still going strong


Perhaps my age is showing? When I say "mixer," I mean hardware, not a
software mixer via a sound card.

However, this is possibly still a most relevant pointer. Thanks.

Gregory Nowak writes:
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> I seem to recall something on the rc systems web site which said that
> you shouldn't plug a doubletalk directly into a sound card, because of
> grounding out on the pc case or something like that. I also seem to
> recall that rc systems has instructions on their web site for how to
> build a transformer which you can then use to plug the doubletalk
> safely into your sound card.
>
> Greg
>
>
> On Wed, Nov 03, 2004 at 10:26:09PM -0500, Janina Sajka wrote:
> > Well, the catty answer is "not very successfully." But, it's not so
> > difficult, really. One simply runs a cable from the headphone output
> > jack to an input on a mixer. Some higher quality near field computer
> > monitor speakers can even accomodate an additional input signal.
> >
> > One does need to be careful, though. You can damage your mixer if you
> > plug the cable into a line in jack which runs at 500 ohms, because the
> > headphone output is a standard 8 ohms. But, if you're careful and keep
> > the volume way down, you can certainly do it.
> >
> > And, as I have said above, there are mixers and also near field
> > monitors, that are wired to accept 8 ohm inputs. I happen to have a
> > wonderful pair made by Roland some years ago.
> >
> >
>
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-- 

Janina Sajka, Chair
Accessibility Workgroup
Free Standards Group (FSG)

janina at freestandards.org Phone: +1 202.494.7040


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