Re: [SlimDevices: Audiophiles] I want it bit-perfect
ModelCitizen;293326 Wrote: > Please, it'd be nice to see one thread here end in harmony.Maybe that can > only happen in the Music section! -- smc2911 http://www.last.fm/user/smc2911/ -------- smc2911's Profile: http://forums.slimdevices.com/member.php?userid=4388 View this thread: http://forums.slimdevices.com/showthread.php?t=46229 ___ audiophiles mailing list audiophiles@lists.slimdevices.com http://lists.slimdevices.com/lists/listinfo/audiophiles
Re: [SlimDevices: Audiophiles] I want it bit-perfect
The point is that the original 16 bit is upscaled to 24 by adding 8 *redundant* bits, so if you lose them, you lose no information. To quote Robin from the link above, > Here's an example using 4-bits / 8 bits: > > Original 4-bit audio: > Processed as 8-bit audio: > Half the volume : 0000 > Half the volume : 0000 > Half the volume : 0000 > Half the volume : > > Notice, we've now reduced the volume significantly and have still not > lost any resolution. and similarly if the original 4-bit was 1101, it'd be processed as 1101 and Half the volume : 01101000 Half the volume : 00110100 Half the volume : 00011010 Half the volume : 1101 The original information content, in the first example and 1101 in the second, is not lost at all by reducing volume. -- smc2911 http://www.last.fm/user/smc2911/ ---- smc2911's Profile: http://forums.slimdevices.com/member.php?userid=4388 View this thread: http://forums.slimdevices.com/showthread.php?t=46229 ___ audiophiles mailing list audiophiles@lists.slimdevices.com http://lists.slimdevices.com/lists/listinfo/audiophiles
Re: [SlimDevices: Audiophiles] I want it bit-perfect
Andy8421;290755 Wrote: > I was also concerned that the volume control on the SB3 worked on the > digital output. I had hoped I was getting a bit perfect copy of the > original CD out of the SPDIF connection on the SB. Only way the volume > can be altered is if the SB processes the datasream, which is not what I > was after at all. Don't know if it is additional jitter, SB processing > or whatever, it just doesn't sound as good as the original. To quote my > 11 year old son (who generally doesn't care about Dad's hifi at all) the > SB sounded as if his glasses needed cleaning.On the topic of volume, have a > look at this thread: http://forums.slimdevices.com/showthread.php?t=44546 and in particular this post: http://forums.slimdevices.com/showpost.php?p=278324&postcount=32 Since the SB uses 24 bit processing and CDs are generally 16 bit, you can have some digital volume reduction without any loss of information. -- smc2911 http://www.last.fm/user/smc2911/ -------- smc2911's Profile: http://forums.slimdevices.com/member.php?userid=4388 View this thread: http://forums.slimdevices.com/showthread.php?t=46229 ___ audiophiles mailing list audiophiles@lists.slimdevices.com http://lists.slimdevices.com/lists/listinfo/audiophiles
Re: [SlimDevices: Audiophiles] Stereophile Article: MP3 vs AAC vs FLAC vs CD
Didn't mean to be cruel... -- smc2911 http://www.last.fm/user/smc2911/ smc2911's Profile: http://forums.slimdevices.com/member.php?userid=4388 View this thread: http://forums.slimdevices.com/showthread.php?t=44532 ___ audiophiles mailing list audiophiles@lists.slimdevices.com http://lists.slimdevices.com/lists/listinfo/audiophiles
Re: [SlimDevices: Audiophiles] Stereophile Article: MP3 vs AAC vs FLAC vs CD
I work pretty close to the rocks and from our 43rd floor I have and excellent view of the Opera House. See photo taken on phone... Whoops. Right OT now! +---+ |Filename: SydOperaHouse.jpg| |Download: http://forums.slimdevices.com/attachment.php?attachmentid=4595| +---+ -- smc2911 http://www.last.fm/user/smc2911/ smc2911's Profile: http://forums.slimdevices.com/member.php?userid=4388 View this thread: http://forums.slimdevices.com/showthread.php?t=44532 ___ audiophiles mailing list audiophiles@lists.slimdevices.com http://lists.slimdevices.com/lists/listinfo/audiophiles
Re: [SlimDevices: Audiophiles] Stereophile Article: MP3 vs AAC vs FLAC vs CD
Maybe we are both mad... -- smc2911 smc2911's Profile: http://forums.slimdevices.com/member.php?userid=4388 View this thread: http://forums.slimdevices.com/showthread.php?t=44532 ___ audiophiles mailing list audiophiles@lists.slimdevices.com http://lists.slimdevices.com/lists/listinfo/audiophiles
Re: [SlimDevices: Audiophiles] Stereophile Article: MP3 vs AAC vs FLAC vs CD
I have two copies of my entire FLAC collection and one copy offsite (which reminds me, it needs to be updated for a few recent purchases) and I've started an S3/Jungle Disk backup in the clouds. So yes, I'm paranoid and FLAC helps! -- smc2911 -------- smc2911's Profile: http://forums.slimdevices.com/member.php?userid=4388 View this thread: http://forums.slimdevices.com/showthread.php?t=44532 ___ audiophiles mailing list audiophiles@lists.slimdevices.com http://lists.slimdevices.com/lists/listinfo/audiophiles
Re: [SlimDevices: Audiophiles] Stereophile Article: MP3 vs AAC vs FLAC vs CD
Sean makes a good point about specialised compression/decompression algorithms being about to out-perform general purpose algorithms like zip. I like the gif/jpeg example. A more extreme, if rather contrived, example is that with the correct algorithm you'd be able to do a much better compression job than zip of compressing a file containing the first million digits of pi! -- smc2911 smc2911's Profile: http://forums.slimdevices.com/member.php?userid=4388 View this thread: http://forums.slimdevices.com/showthread.php?t=44532 ___ audiophiles mailing list audiophiles@lists.slimdevices.com http://lists.slimdevices.com/lists/listinfo/audiophiles
Re: [SlimDevices: Audiophiles] Stereophile Article: MP3 vs AAC vs FLAC vs CD
Does the SB make use of the CRC check and re-request a dodgey frame, or just drop it? -- smc2911 smc2911's Profile: http://forums.slimdevices.com/member.php?userid=4388 View this thread: http://forums.slimdevices.com/showthread.php?t=44532 ___ audiophiles mailing list audiophiles@lists.slimdevices.com http://lists.slimdevices.com/lists/listinfo/audiophiles
Re: [SlimDevices: Audiophiles] Stereophile Article: MP3 vs AAC vs FLAC vs CD
Good point. So I'd summarise in terms of three levels of redundancy: 1. You know it's there in principal, but it's not useful. 2. You use it to identify a problem (e.g. CRC) but you can't do anything about the problem. 3. You use it to correct errors (ECC). 2 and 3 come in degrees depending on how many errors they can deal with before they stop being useful. -- smc2911 ---- smc2911's Profile: http://forums.slimdevices.com/member.php?userid=4388 View this thread: http://forums.slimdevices.com/showthread.php?t=44532 ___ audiophiles mailing list audiophiles@lists.slimdevices.com http://lists.slimdevices.com/lists/listinfo/audiophiles
Re: [SlimDevices: Audiophiles] Stereophile Article: MP3 vs AAC vs FLAC vs CD
egd;278557 Wrote: > AFAIK there is no redundancy in WAV files either. Contrary to the > author's assertion, compression has nothing to do with it.Strictly speaking, > there is redundancy in a WAV file (otherwise it would be impossible to do lossless compression), however it is not "useful" redundancy like a checksum that can be used to correct any errors in transmission. As SuperQ points out, although mathematically FLAC has less redundancy than WAV, it has enough useful redundancy that, contrary to the article's author's suggestions, makes FLAC more robust for streaming. -- smc2911 -------- smc2911's Profile: http://forums.slimdevices.com/member.php?userid=4388 View this thread: http://forums.slimdevices.com/showthread.php?t=44532 ___ audiophiles mailing list audiophiles@lists.slimdevices.com http://lists.slimdevices.com/lists/listinfo/audiophiles
Re: [SlimDevices: Audiophiles] Stereophile Article: MP3 vs AAC vs FLAC vs CD
ralphpnj;277930 Wrote: > If you take the time to read/scan through the thread you'll see that JA > takes all these things very seriously and does respond to forum posts. > As for the lack of comparison testing I can only guess that since JA > and Stereophile take the position that files made with lossy > compression are do not offer true high end sound quality, then why > bother to run all those tests. And while I completely agree that in > this day and age of cheap storage there is no reason to use a lossy > codec, it would still be nice to know which lossy codec to use in the > event that one has a need for it (think iPod).I'd tend to agree with this > observation. I think that the starting point (which is rather similar to my own position at home) is that since you can have lossless, why bother with anything else? As for the rest, it looks like he was having fun playing with graphs. However, there is one point no-one has mentioned that I would take issue with: > Something I have rarely seen discussed is the fact is that because all > compressed file formats, both lossless and lossy, effectively have zero > data redundancy, they are much more vulnerable than uncompressed files > to bit errors in transmission.As I understand it (please correct me if I'm > wrong) SB uses TCP/IP to stream, which means that it is error free. The only problem you can run into is that if your bandwidth is so terrible that your buffer runs out, but this would be more likely to happen with an uncompressed format (although unlikely even then). So, long live FLAC! -- smc2911 ---- smc2911's Profile: http://forums.slimdevices.com/member.php?userid=4388 View this thread: http://forums.slimdevices.com/showthread.php?t=44532 ___ audiophiles mailing list audiophiles@lists.slimdevices.com http://lists.slimdevices.com/lists/listinfo/audiophiles
Re: [SlimDevices: Audiophiles] Flac or Apple Lossless?
Do a search for "WAV and FLAC" on the forums and you'll see the shortcomings of wav expounded at length (biggest drawback: no tags). -- smc2911 -------- smc2911's Profile: http://forums.slimdevices.com/member.php?userid=4388 View this thread: http://forums.slimdevices.com/showthread.php?t=34953 ___ audiophiles mailing list audiophiles@lists.slimdevices.com http://lists.slimdevices.com/lists/listinfo/audiophiles
[SlimDevices: Audiophiles] Re: Best way to convert FLAC to MP3
I also use foobar2000. For more discussion on the topic, see this thread (it includes the method I use for getting directories and filenames of the transcoded files just how I want them): http://forums.slimdevices.com/showthread.php?t=24116&highlight=foobar2000 -- smc2911 ---- smc2911's Profile: http://forums.slimdevices.com/member.php?userid=4388 View this thread: http://forums.slimdevices.com/showthread.php?t=30769 ___ audiophiles mailing list audiophiles@lists.slimdevices.com http://lists.slimdevices.com/lists/listinfo/audiophiles
[SlimDevices: Audiophiles] Re: Dist-ed FLACs. Whatta do?
If the issue is only with playback on SB (as opposed to, say, Winamp or Media Player), it could be a big/small endian issue. Have a look at this http://forums.slimdevices.com/showthread.php?t=23877. -- smc2911 smc2911's Profile: http://forums.slimdevices.com/member.php?userid=4388 View this thread: http://forums.slimdevices.com/showthread.php?t=27245 ___ audiophiles mailing list audiophiles@lists.slimdevices.com http://lists.slimdevices.com/lists/listinfo/audiophiles
[SlimDevices: Audiophiles] Re: mp3 sound better than flac?
Surely, since FLAC is lossless, FLAC and WAV will sound identical? -- smc2911 smc2911's Profile: http://forums.slimdevices.com/member.php?userid=4388 View this thread: http://forums.slimdevices.com/showthread.php?t=22936 ___ audiophiles mailing list audiophiles@lists.slimdevices.com http://lists.slimdevices.com/lists/listinfo/audiophiles
