On Thu, 1 Jul 2004 15:27:57 +0200, "Andrew Walls"
wrote:

Remember that if you increase the speed of an analogue tape you increase the
pitch. If you re-record this tape digitally and slow it down digitally the
voices will still be high pitched, and may be difficult to recognise, unless
you have a program that can pitch down the voices digitally.

This is not correct. Slowing things down digitally has precisely the
same effect as slowing them down by analogue means. If the tape is
recorded to hard disk and then played back at half speed, it'll be
right.

There *are* some audio editors that offer the ability to alter speed
without changing pitch, but that involves complex resampling and is
not the default way that editors slow things down.

To the original poster: download GoldWave, record the tape to hard
disk, then use the Pitch or Time Warp effects to halve the speed.
--
Clive Backham

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