Changing storage compression — AVIC411 Forum Archive

Posted Jul 20, 2006 · 04:17 UTC#1

Now with you guys hacking the HDD, is there any way to up the kbps of the MP3s it saves to the hard drive? I hear when you rip songs the compression makes the sound quality kind of suck. Any luck with that?

George

Posted Jul 21, 2006 · 18:24 UTC#2

George01v6 said:
Now with you guys hacking the HDD, is there any way to up the kbps of the MP3s it saves to the hard drive? I hear when you rip songs the compression makes the sound quality kind of suck. Any luck with that?

George

Once we get the unit to play MP3's we should be able to do whatever we want quality wise.

Posted Jul 21, 2006 · 22:18 UTC#3

Yeah, currently it doesn't rip in MP3, and there's no way to change the quality in which it DOES rip.

Posted Jul 24, 2006 · 04:34 UTC#4

Hyperite said:
Yeah, currently it doesn't rip in MP3, and there's no way to change the quality in which it DOES rip.

althought I'm not 100% sure if this is the case or not, my suspicion would be that pioneer didnt want to license an MP3 encoder, thats probably the only reason it is the way it is.

that being said, if somebody is workin on getting it to play something else, they should be trying to get it to enc/dec AAC rather then MP3. Thats what itunes uses and the quality is much better then MP3.

Posted Jul 24, 2006 · 18:35 UTC#5

berniec said:

Hyperite said:
Yeah, currently it doesn't rip in MP3, and there's no way to change the quality in which it DOES rip.

althought I'm not 100% sure if this is the case or not, my suspicion would be that pioneer didnt want to license an MP3 encoder, thats probably the only reason it is the way it is.

that being said, if somebody is workin on getting it to play something else, they should be trying to get it to enc/dec AAC rather then MP3. Thats what itunes uses and the quality is much better then MP3.

The first goal is to get it to play mp3's. The default windows media player would play them and it is included as part of the windows CE distribution package (I can play mp3's on my pocket PC out of the box).

The problem right now is accessing the Windows installation. It is on flash memory inside the unit. Not on the HDD.

Posted Jul 25, 2006 · 03:49 UTC#6

Does anybody know what format the CD's are being ripped into? Data rate?

Posted Jul 25, 2006 · 17:11 UTC#7

bump cuz i wanna know wat kbps its ripping at

Posted Jul 25, 2006 · 18:26 UTC#8

The format is ATRAC (AT3) and the bit rate is 132 kbit/s.

I started hacking the files but lost interest when I was unable to put a replacement drive in the Z1 and I didn't want to risk writing to my original drive.

Posted Jul 25, 2006 · 20:21 UTC#9

So we're dealing with the equivalent of MiniDisc files. Okay, at least they went with a fairly well-developed and robust compression algorithm. As much as I hate compressed audio formats, it could have been worse. ;)

dave