Audible.com

don300 · 09-30-04, 03:23 PM

I've been a member of audible for a couple of years and just realized they had a plug in for windows mobile 2003. (that's probably because before I got my Axim I never had the need to look for it). A 7 hour book that would fill about 6 audio CDs only takes about 25mb on an SD card. Which means you could fit 70 hours of books on a 256 card.

Does anybody know why the file takes up more space on a CD than on an SD card?

Thanks,

Don

n1tji · 09-30-04, 03:46 PM

No lets see Iv'e been audible awhile as well.
the answer is audio cd is a different format.
On the card they are saved as mp3's

don300 · 09-30-04, 03:54 PM

Originally Posted by n1tji

No lets see Iv'e been audible awhile as well.
the answer is audio cd is a different format.
On the card they are saved as mp3's

Can you get Audible to save as MP3 to the CD or can you transfer the MP3 file from the SD card to a CD that you could play on a standard CD player? I beleive, as you stated, they are saved as WAV files on the CD.

Don

mattspierce · 09-30-04, 04:01 PM

CD's are stored as raw audio data. Thats why you can fit about 80 minutes, it works out to be about 800 megabytes. MP3's can compress raw data down considerably. It does that by cliping off the parts of the sound wave that we don't really pay attention to. Thats why its known as a losey compression scheam. Spoken word doesn't need the fidelity that music does, so it can be highly compressed and a user doesn't mind it as much. I hope this helps.

x3xuser · 09-30-04, 04:18 PM

Some of newer CD Player can also play MP3 files (look for the MP3 logo on the player). The compression ratio is usually 10:1 between .WAV and .MP3 compressed at 128kbps.

09-30-04, 07:23 PM

sorry, this is a little off topic but not, why does everyone dis on mp3's so much, i mean personally i really cant tell the difference between them and say a cd, and no i dont listen to everything through crappy equipment(personally, i think most of the headphones people listen to around me suck, lol), i just really cant hear the differeance

magnolia · 09-30-04, 08:23 PM

Umm, they're not mp3's. They're .aa format. Anyway, they are compressed greatly. An audio CD can only hold 74 (or 80) minutes of audio, regardless of the quality. Anyway, they're copy protected and you can't easily change format. There are ways, but it's not legal anyway.