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Atrac3 (.rm) codec on iPod 5G

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mtee:
The "codec failure" bug has been fixed. Just checked various rm files an they were good. Code is in SVN.

dar02:
I am giving you an example of that clicking in sound:
http://rapidshare.com/files/288058648/wetar_rcrd01.rar [link expired]
http://rapidshare.com/files/288058983/wetar_rcrd02.rar [link expired]

in wetar_rcrd01.wav you can hear it at:
0:12
0:18
0:26-0:32

in wetar_rcrd02.wav you can hear it at:
0:05
0:13
0:18 (...And when you {CLICK!} unravel...)

On oscilloscope it is looking like this (0,012 sec):

[enlarge picture]

I've made these records from my iPod using analog input in my soundcard.
Rockbox is making quiet clicks in random places. I can't hear this problem while listening the same song coded in other audio formats or on emulated rockbox iPod video on PC.

I have a question HOW TO CREATE ATRAC3 .RA FILES???
Right now I am using this: (Real Converter (GUI) and Helix DNA Producer (CLI))
http://rapidshare.com/fil...994826/real_converter.rar
Should I use some other software?
Why "ATRAC3 cannot be used at such high (320kbps) bitrates" when Sony SonicStage is giving you that option:

[enlarge picture]

On real.com webpage:
http://service.real.com/help/library/guides/RealProducer10/htmfiles/new.htm
you can read:

--- Quote ---RealProducer 10 introduces new codecs for stereo music and stereo surround based on AAC encoding technology. These codecs replace older codecs based on ATRAC3 technology. Within the RealProducer graphical user interface, these codecs are designated as "RealAudio 10"."

Stereo music codecs that encode at rates below 96 Kbps are not based on AAC technology. They are backwards- compatible to RealPlayer G2 or RealPlayer 8, depending on the precise codec used. For more information, refer to "5.1 Multichannel Audio Codecs".

As described in "RealAudio 10 Stereo Music Codecs", AAC-based codecs have replaced ATRAC3-based codecs for streaming bit rates above 96 Kbps for stereo and stereo surround music.
--- End quote ---

So I understand that they are not using the name "Atrac3" in their software but "RealAudio 8".
I am not interested in making such low bitrate files like 96kbps so is the only way to make higer bitrates atrac3 .ra files is to install RealProducer 8?
But there is no place in the net to download it.

P.S.
I've checked the last build r22883-091003 and I don't have the "Codec Failure" problem anymore.

mtee:

--- Quote from: dar02 on October 03, 2009, 04:33:15 AM ---...
Why "ATRAC3 cannot be used at such high (320kbps) bitrates" when Sony SonicStage is giving you that option:

[enlarge picture]
...

--- End quote ---

Basically, atrac3 has 2 modes; LP2 with a bitrate of 132kbps, and LP4 with a bitrate of 66kbps. The selection in your image is for ATRAC Advanced Lossless, which is - as mentioned in the info in the same image - built on atrac3 and atrac3plus.
The only bitrate at which you could encode atrac3, from that list, is 132kbps, that's why this is the only bitrate next to which you could find (ATRAC3).
At all the other bitrates, it's atrac3plus not atrac3.
I don't know how you got AAC this way. But anyway, if you want atrac3, encode the file at 132kbps and see if it makes a difference.


--- Quote from: dar02 on October 03, 2009, 04:33:15 AM ---...
P.S.
I've checked the last build r22883-091003 and I don't have the "Codec Failure" problem anymore.

--- End quote ---

Thanks for the feedback. :)

dar02:
this picture:

is from Sony SonicStage that can create only .oma files.
I still don't know how to encode to .ra (atrac3).
Any idea?

mtee:
I have just tried Real Converter and it seems it can't encode in atrac3. Sorry, but I don't really know of a program that enables to encode a file to atrac3.rm, you could try ffmpeg though.

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