.CDA Format Problem

vbimport

#1

I Had A Disc That Wouldn’t Work In My CD Drive, So I Took It up My Friends House. I E-mailed The Tracks To Myself In .CDA Format And They Will Not Play Because They Are In This Format. I Have Lost The Disc now, So I Cannot Go Back To My Friends House And Do It Again. The File Sizes Are All 44 bytes. I Have The Tracks On My PC.

Please Help!!!


#2

The .cda files are small “pointer” files. These direct the drive playing an Audio CD to the actual file where the music is .
The above is the best I can explain it simply . A commercial pressed CD doesn’t actually have files.

A CD is read by focusing a 780 nm wavelength (near infrared) semiconductor laser through the bottom of the polycarbonate layer. The change in height between pits and lands results in a difference in the way the light is reflected. By measuring the intensity change with a photodiode, the data can be read from the disc.

In the future you need to used a ripping software like EAC or dBpowerAmp CD Ripper .
WMP is a crappy CD ripper so don’t use it.
Then rip to a lossless format like .wav or .FLAC . The resulting files will be between 30MB & 100 MB & can vary some outside of that but usually don’t. This would mean a 10 track CD with an average of 50MB for each track is 500MB .
It would be nice if songs could be compressed to 44 bytes & still sound good.
I don’t think 44bytes would be a blip you could hear.
So better luck next time . We all have to learn.


#3

[QUOTE=cholla;2598303]The .cda files are small “pointer” files. These direct the drive playing an Audio CD to the actual file where the music is .
The above is the best I can explain it simply . A commercial pressed CD doesn’t actually have files.
[/QUOTE]

Yeah that’s correct. :iagree:

Basically the data stored on a CD is in analogue format and the laser reads it just like the needle in an old style record player.

So although CD is a digital medium rather confusingly it’s being used to store analogue data.

There are no files and the CDA pointers are just a convenience for Windows.

[B]Wombler[/B]


#4

Yup. .CDA are only pointers…

CDDA contains 16bit stereo RIFF WAVE format files (intel or motorala headered). :slight_smile: