Date   : Tue, 14 Apr 2009 08:45:06 +0000 (GMT)
From   : itonks@... (Ian Tonks)
Subject: uef2wave

I would think that's to do with the input impedance of the computer's tape 
interface. On a Model B that's determined by R78. If you're brave (and I've
not tested it) you could try changing it to 68Ohm or lower as most modern,
particularly portable devices, are designed to drive that sort of impedance.

Failing that, there are plenty of simple schematics for headphone amplifiers
on the web. http://www.head-fi.org isn't a bad place to start.

Ian



----- Original Message ----
From: Alex Taylor <zeem.uk@...>
To: BBC micro mailing list <bbc-micro@...>
Sent: Tuesday, 14 April, 2009 9:29:38
Subject: Re: [BBC-Micro] uef2wave

2009/4/13  <me@...>:

> The results I've had trying to play the resulting wave files from an
> iPod into my beeb have been... mixed.

I've not done this with a Beeb, but I did once do something similar
with an Amstrad CPC464, a cassette adapter, a laptop and a TZX
playback utility.

I could have smashed the whole lot up with a hammer, frustrating
doesn't begin to describe it. It had a habit of loading all the way to
the end, then failing.

One of the biggest problems seemed to be the lack of audio volume from
the laptop's headphone output. Turning everything up full still wasn't
quite loud enough, but introduced distortion. I've had a similar issue
with a Spectrum, where it actually loaded everything but I couldn't
hear the loading noise through the internal speaker, because the sound
volume going in was so low.

Although this might not be your issue (you've looked into it in more
detail that I ever did), it might help to run the sound through some
kind of amplifier or play it back from something louder.

-- 
Alex Taylor

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