Re: reading from cassette

["desiv" <desiv@attbi.com>]

So, why would the recording of the MP3 to the tape (intermediary) not have
the noise from the PC's ground?

(I am not an electronics guy, so that's a real question.  I'm not trying to
be funny..)

Is that a type of noise that the Apple would pick up but a recording usually
doesn't???

desiv

"Michael J. Mahon" <mjmahon@aol.com> wrote in message
20030831130314.18024.00000126@mb-m24.aol.com">news:20030831130314.18024.00000126@mb-m24.aol.com...
> Vince Briel replied:
>
> >"Michael J. Mahon" <mjmahon@aol.com> wrote in message
> >20030830202938.18419.00000131@mb-m13.aol.com">news:20030830202938.18419.00000131@mb-m13.aol.com...
> >> Vince Briel wrote:
> >>
> >> >Hey all, I have a tape that I want to read and I'm having probs
getting
> >it
> >> >to read on my II+. Is there an emulator I can try and use that loads
> >> >cassette sounds? Actually I'm trying to load from an MP3.
> >>
> >> Check your levels.
> >>
> >> The Apple II cassette input was meant to be an "external speaker"
> >> output level from a cassette recorder.  It is low impedance and a
> >> couple of volts.
> >
> >I may have one of those old cassette players. I just thought transferring
> >back to cassette would degrade the sound too much. I'll give it a try.
I've
> >tried adjusting sound levels and I've gotten close, some of the info
loaded,
> >it just errored out. I must have tried 30 different levels. Thanks for
the
> >help.
>
> The problem may be noise picked up through the grounds.  Most
> cassette players are very well isolated from the AC line, since they
> either run on batteries or with a tranformer-coupled wall wart.  A PC
> is not nearly so well isolated, and the ground is likely to contain
> noise from the switching power supply.
>
> Using a cassette deck as an intermediary may provide the isolation
> needed to reduce ground noise significantly, and may solve your
> reliability problem.
>
> -michael
>
> Check out amazing quality sound for 8-bit Apples on my
> Home page:  http://members.aol.com/MJMahon/