Search found 20 matches

by ye
Sat Jan 23, 2010 9:40 am
Forum: Play
Topic: Play can't handle Flac 24/192
Replies: 5
Views: 7693

Re: Play can't handle Flac 24/192

That 192kHz files are resampled to the output device's sample rate can not be the (only) problem. The issue also occurs if the output device's sample rate is 192kHz.
Cog plays 192kHz files well (also if I switch the output device's sample rate to something smaller than 192kHz).
by ye
Sat Jun 06, 2009 6:55 pm
Forum: Max
Topic: How to convert FLAC to Apple Lossless (ALAC)?
Replies: 8
Views: 36267

Re: How to convert FLAC to Apple Lossless (ALAC)?

This does not seem to work for 24bit/192kHz audio. I converted a 24/192 FLAC file to Apple Lossless using the MPEG4 option. This generated a file more than 2x the size! [An ALAC file generated using the iTunes converter for the AIFF file corresponding to this FLAC file is roughy the same size as th...
by ye
Mon Aug 28, 2006 9:03 am
Forum: Max
Topic: Rip a DVD?
Replies: 6
Views: 5342

CD Audio is uncompressed. AC3 is a compressed (and lossy) format.

By the way, what you got this way is the audio track of a video DVD containing a concert :wink:
by ye
Sat Aug 26, 2006 2:35 pm
Forum: Max
Topic: Rip a DVD?
Replies: 6
Views: 5342

Well, I was more thinking about DVD-Audio-s, so the stuff in the AUDIO_TS folder, so (in the best case) lossles 24bit 192kHz music (MLP format)
by ye
Sat Jul 29, 2006 3:25 pm
Forum: Max
Topic: Rip a DVD?
Replies: 6
Views: 5342

For encoding there is a program: DVD-Audiofile to be found at versiontracker. it is based on the open source program dvda-author (see http://dvd-audio.sourceforge.net/). For ripping there are two problems: 1. The, OPTIONAL, copy protection. Most commercial DVD-Audio disk are encrypted. This a very h...
by ye
Thu Jul 20, 2006 9:16 pm
Forum: Max Development
Topic: Jitter correction & comparison ripper
Replies: 3
Views: 7943

I think this FAQ article is quite informative regarding jitter and the strategy to correct it used by this program http://www.feurio.com/English/faq/faq_vocable_jitter.shtml On the other hand there is a list of CD drives on the same site http://www.feurio.com/English/cd_roms/frame_list_ide.html whic...
by ye
Fri Jun 16, 2006 4:27 pm
Forum: Max
Topic: Usefull links
Replies: 0
Views: 6017

Usefull links

Perhaps it would be a good idea to start a link collection to useful sites providing information related to CD-Audio, ripping, error correction, ... As first entry: I have found a very interesting FAQ. It is the "Explanation of Terminology" FAQ of the "Feurio" program (a windows (audio-)rip and burn...
by ye
Sun Jun 04, 2006 6:36 pm
Forum: Max Development
Topic: Secure ripping
Replies: 92
Views: 85934

I had an idea for a possible way to check for errors ... If I interpret the information form http://web.usna.navy.mil/~wdj/reed-sol.htm (which I thing is one of the better sources out there) correctly we have: 1.) the sub-channel data is not (C1, C2) encoded, and hence also not corrected, as the au...
by ye
Sat Jun 03, 2006 7:22 am
Forum: Max Development
Topic: Secure ripping
Replies: 92
Views: 85934

Has anyone the exact title, author, publisher, ISBN and/or ISSN number of the "red book"? I tried search of library catalogs with "red book" and variants of "Audio recording - Compact disc digital audio system" or "IEC 609" but got nothing of which I think it is the red book . I tried the nationwide...
by ye
Fri Jun 02, 2006 8:17 am
Forum: Max Development
Topic: Secure ripping
Replies: 92
Views: 85934

I can still access the subchannel data, which contains some data which can be used for error checking and correcting. More on this to come. I looked around on many sites to get infos about the data structure on the Audio-CD. The info is often contradicting :( I fear I have to have a look in the Red...
by ye
Thu Jun 01, 2006 6:18 am
Forum: Max Development
Topic: Secure ripping
Replies: 92
Views: 85934

I am going to experiment with the error flags and see if I can glean anything from them in my testing. One nice thing, that should not be too much work, is to report how many (percentage) there are (per sector per track, per rip,... perhaps also graphically?). This would report the percentage of de...
by ye
Wed May 31, 2006 4:31 pm
Forum: Max Development
Topic: Secure ripping
Replies: 92
Views: 85934

Hmm,... so this gives us only the result of some black box error correction plus an indication which bytes possibly weren't corrected accurately. No chance to do a error correction of our own with this data. But how about this feature of cdparanoia that they claim to be an error correction. Is there...
by ye
Tue May 30, 2006 10:38 pm
Forum: Max Development
Topic: Secure ripping
Replies: 92
Views: 85934

Well, to be sure to have read the (raw) data as accurately as possible from the media is the first and essential step for further processing. So comparison ripping is a good thing to have! As a next step an sophisticated error detection and correction would be nice. It should be possible to do this ...
by ye
Tue May 30, 2006 7:52 pm
Forum: Max Development
Topic: Secure ripping
Replies: 92
Views: 85934

Perhaps I miss the point :oops: ... but perhaps you mix up two things. a) extracting the exact "physical" information contained on the disk (including possible damaged areas). and b) retrieving the exact data that once was stored on the disk. There is nothing odd in reading a disk 20 times and extra...
by ye
Tue May 30, 2006 5:35 pm
Forum: Max Help
Topic: What is a "comparison ripper"?
Replies: 5
Views: 4087

Re: comparison ripper...

can anyone clarify what the SHA-256 option does? The option is used to determine if two sectors are equal. This can either be done straight forward by comparing bit by bit (that is done if the option is unchecked) or by using the SHA256 hash function. A hash function computes a small amount of outp...