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I'm quite certain there'd be bandwidth issues but we are only talking about
voice recordings so no need for extended bandwidth. Even for voice, I
believe 32x might be in the extreme. I would think 8x would be the limit as
that gives a machine with a 30Khz top end the ability to reproduce such
material out to 3750Hz, enough for voice. 


-----Original Message-----
From: Association for Recorded Sound Discussion List
[mailto:[log in to unmask]] On Behalf Of steven c
Sent: Sunday, February 12, 2006 5:12 PM
To: [log in to unmask]
Subject: Re: [ARSCLIST] 1/4" audio tape digitizing

----- Original Message ----- 
From: "Jeffrey Kane" <[log in to unmask]>
> That all depends on the speed of the tape you're digitizing and the speed
of
> your deck. If it's 15/16 IPS and you're playing at 30IPS, you are playing
> the tape at 32x realtime and will be able to digitize an hour's worth of
> data in 1.875 minutes. I have no idea how this would sound.
It seems to me that you would run into bandwidth-limitation problems, since
the signal frequencies would also be multiplied by 32. For ordinary audio
signals of 32Hz-16KHx, the new signal bandwidth would be 1024Hz-512KHz, and
I suspect the top frequency would present problems?

Steven C. Barr