DAT-heads Digest #19

Contents:
  FS: DAT Tapes ("Digital Ambience")
  Tape speed problem ("Charles Quinn")
  Re: Tape speed problem (Seth Breidbart)


From: "Digital Ambience" <digitalambience@hotmail.com>
Subject: FS: DAT Tapes
Date: Wed, 06 Dec 2006 17:04:30 -0500


I have the following remaining sealed DAT tapes for sale.

Qty 1 10 pack  Sony DG60P 2 hour tapes - $25 per 10 pack
Qty 1 10 pack  Fuji DG60M 2 hour tapes - $25 per 10 pack

Add $7 shipping per 10 pack.

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From: "Charles Quinn" <cmquinn@mindspring.com>
Subject: Tape speed problem
Date: Wed, 6 Dec 2006 18:22:19 -0800

I have a couple of tapes that I am having archiving. One is recorded at
32kHz as reported by my R300. It is a copy of Tom Petty from a radio
broadcast. When I play it to record it on my m-audio 2496 it sounds okay
when recording it digital in with card set at 32kHz and using CD-wave. After
recording it sounds like Alvin and the Chipmunks (I should know I have one
of their albums from the 60's when I was a young'un).

The second tape is a Grateful Dead tape (12/28/79). R300 reports tape
setting as 44.1kHz. On playback tape sounds faster (possibly 48kHz).

I have both the soundcard and CD-wave set for the same speed as reported by
the Sony R300.

After loading hundreds of tapes these are the only two to present this
problem. I am so getting out of the tape business, and love my 722 and am
still experimenting with the microtrack.

What am I overlooking for these two tapes?

Earthlink may challenge you if you respond, I will go through my suspect
mail and add you if necessary.

Thanks
Chuck





From: Seth Breidbart <sethb@panix.com>
Subject: Re: Tape speed problem
Date: Wed, 6 Dec 2006 21:36:26 -0500 (EST)

"Charles Quinn" <cmquinn@mindspring.com> wrote:

> When I play it to record it on my m-audio 2496 it sounds okay when
> recording it digital in with card set at 32kHz and using
> CD-wave. After recording it sounds like Alvin and the Chipmunks (I
> should know I have one of their albums from the 60's when I was a
> young'un).
>
> The second tape is a Grateful Dead tape (12/28/79). R300 reports
> tape setting as 44.1kHz. On playback tape sounds faster (possibly
> 48kHz).

The sampling rate appears in two forms on the tape.  It's possible for
them to disagree; then the playback will be at one speed, but the
included data will _say_ the other.

The FCN-1 allows you to set the claimed speed when making a copy (or
recording); playing with it is how I know a tape can get it wrong.

If you've recorded the .wav files, I'd guess that all you need to do
is use a binary editor to fiddle with the header to show the correct
speed.

Seth


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