[Coco] Recovering a damaged cassette file

Thu Sep 6 00:41:36 EDT 2012

Yep, I've been playing it in Sound Forge Pro 10.0 as well. The error actually comes before the noticable dropout. There's a real sharp drop at about 00.15.174 and that's where it errors, it never gets to the big dropout. I've put some high end compressors on it to bring up the lower peaks but the warble is a bit too much and it still errors. I the tried a "jitter" correction utility and still no go. I may play with it some more later

The best thing I know to do, is use the cassette routines listed in the EDTASM manual and create your own tape reader to read one block at a time and store it in buffers until it errors and you can get the data up until the errored block, possibly up to the error itself. I used to have a little program I used for this on my old tape system but alas... still sitting on what are most likely unplayable tapes. The last ones I tried, the Mylar peeled off as they played. They were victoms of Hurricane Floyd and were underwater for about 4weeks.

Bill

Music from the Tandy/Radio Shack Color Computer 2 & 3
https://sites.google.com/site/dabarnstudio/
Bill Pierce
ooogalapasooo at aol.com

-----Original Message-----
From: Chad H <chadbh74 at hotmail.com>
To: 'CoCoList for Color Computer Enthusiasts' <coco at maltedmedia.com>
Sent: Thu, Sep 6, 2012 12:14 am
Subject: Re: [Coco] Recovering a damaged cassette file

I've played a little bit with the .mp3 file and the .wav.  Both have the
beforementioned audio drop out at the end...the same place my CoCo 2 gives
IO error when trying to CLOAD these.  I tried the CLOADM and it errored out
quickly, stating ?FM error so apparently not a ML program file.  The .mp3
version seemed to be slightly 'deeper pitched' than the .wav version, but
both attempted to load same file name "LAB.GIG."

Ran files through some filters and reshapers in Sony Sound Forge, especially
trying to normalize the volume at the dropout, but nothing that works yet.
It almost sounds like the tape may have briefly slowed down at that point
too..like maybe due to tape bind.  That would throw off the data timing I
suspect if so.

-----Original Message-----
From: coco-bounces at maltedmedia.com [mailto:coco-bounces at maltedmedia.com] On
Behalf Of Stephen H. Fischer
Sent: Wednesday, September 05, 2012 10:49 PM
To: CoCoList for Color Computer Enthusiasts
Subject: Re: [Coco] Recovering a damaged cassette file

Hi,

One point of interest, I see a difference between the
www.yaccs.info/MyDoD.jpg and the files

http://www.yaccs.info/MyDoD/MyDoD.mp3
http://www.yaccs.info/MyDoD/MyDoD.wav
http://www.yaccs.info/MyDoD/MyDoD.aup.zip

I am not sure that they are even the same audio recording.

More data would be helpful.

What computer, CoCo 2 or CoCo 3.

And more about what the recording is, BASIC, Data or CLOADM?

SHF

Can some one please clue me into how to input the wav into VCC, I think I
had it right but the tape moved, AUDIO ON had no sound and nothing happened.

----- Original Message ----- 
From: "Chad H" <chadbh74 at hotmail.com>
To: "'CoCoList for Color Computer Enthusiasts'" <coco at maltedmedia.com>
Sent: Wednesday, September 05, 2012 8:11 PM
Subject: Re: [Coco] Recovering a damaged cassette file

I was going to give this a try...or has someone already recovered it for
you?

-----Original Message-----
From: coco-bounces at maltedmedia.com [mailto:coco-bounces at maltedmedia.com] On
Behalf Of Diego Barizo
Sent: Tuesday, September 04, 2012 11:07 PM
To: CoCoList for Color Computer Enthusiasts
Subject: Re: [Coco] Recovering a damaged cassette file

I have uploaded the wav, MP3 and Audacity files
http://www.yaccs.info/MyDoD/MyDoD.mp3
http://www.yaccs.info/MyDoD/MyDoD.wav
http://www.yaccs.info/MyDoD/MyDoD.aup.zip

Thanks to anyone who can give it a try.

Diego

Luis Fernández wrote:
> I use the same editor
> wav utility can read my partial and rescue far as it goes.
> if you want to send me the wav and try to salvage what you have
>
> ----------------------------------------------------------------------
> -----------
> Making
> CoCoDskUtilPack V 1.1.3A.zip, Scan magazines and organize maltedmedia
> http://cococoding.com/cocodskutil/ Thank Aaron Wolfe
> http://www.tandycoco.com Thank Brian Blake and Stephen Fischer My
> personal blog: http://www.luis45ccs.blogspot.com,
> Excuse my English, I use google translator, my language is Spanish,
> I'm Spanish but I live in Venezuela
> ----------------------------------------------------------------------
> -----------
>
>> Date: Tue, 4 Sep 2012 22:07:00 -0300
>> From: diegoba at adinet.com.uy
>> To: coco at maltedmedia.com
>> Subject: [Coco] Recovering a damaged cassette file
>>
>> I have a program saved on tape that I would love to recover.
>> The problem is that the tape as a "drop" near the end of the file.
>> Has anyone ever been able to recover, at least partially a damaged
>> cassette file?
>>
>> I was thinking about just copying and pasting a good section of the
>> file on top of the damaged one, using Audacity ( an audio editor )
>>
>> Any suggestions on what to do?
>>
>> In case it helps, here is a screenshot of the last section of the
>> waveform. You can see 2 drops, a small, sharp one first, and a bigger
>> one almost at the end.
>> www.yaccs.info/MyDoD.jpg
>>
>> Thanks to all,
>>
>> Diego
>>
>>
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>> Coco mailing list
>> Coco at maltedmedia.com
>> http://five.pairlist.net/mailman/listinfo/coco
>
>
> --
> Coco mailing list
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>

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