[Coco] Old cassette tapes

[Luis Oliveira]

Em domingo, 26 de abril de 2020, às 01:07:24 -03, Allen Huffman escreveu:
> > On Apr 25, 2020, at 10:26 PM, Luis Oliveira <lfl.tr at soeiro.com.br> wrote:
> > The problem is that the material is too old and the sound is not good.
> > What can be done to improve it? Has someone done something like it?
> 
> Since I did not have access to the original hardware, I used a higher end
> home stereo deck I had. I played them and recorded them in stereo WAV files
> at a high bitrate.

What bitrate did you use? 441.1KHz at 16 bits?

> Some tapes, due to alignment differences, played one
> channel louder than the other. I figured by capturing both sides I would
> get better results.

Good idea! After capturing, how did you merge the two tracks back into one for 
a mono signal? Did you use any filters?

> I was then able to find tools to convert them into files used by the
> emulator, keeping my original audio recordings for safekeeping.
> 
> My tapes were from 1982, and one was jammed and would not turn. When I find
> them again, I am sending them off to someone who has an original Commodore
> tape unit — he may be able to recover a few files I could not.

Good luck, too!

Thanks!
, Luis