No lossy codec is perfectly gapless, Here is the killer sample |
No lossy codec is perfectly gapless, Here is the killer sample |
Feb 1 2004, 20:42
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Moderator Group: Super Moderator Posts: 3934 Joined: 29-September 01 Member No.: 73 |
I found a problem sample for gapless encoding. Whatever I do, there is an audible click between the tracks. I've analyzed its cause, and found that it comes from edge effects. The termination of the waveform far from zero causes ringing, that manifests itself as an audible click, even when the files are played gapless.
I saw the problem with MP3 and MusePack. MP3 : Lame 3.90.3 --alt-preset standard ; Foobar2000 disc writer MPC : Mppenc 1.14 --xlevel ; Mppdec You can get the file here : http://www.hydrogenaudio.org/forums/index....35&t=18207&st=0 Look at the attached picture to see the problem in the waveform. |
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Pio2001 No lossy codec is perfectly gapless Feb 1 2004, 20:42
Case Amazingly Ogg Vorbis at -q5 seems to handle this j... Feb 1 2004, 21:05
AtaqueEG How do I decode?
Edit: Nevermind, I found foobar2... Feb 1 2004, 21:10
guruboolez I confirm: vorbis is OK. DualStream is perfectly g... Feb 1 2004, 21:15
guruboolez I've tried with WMA9 :
-standard encoder isn... Feb 1 2004, 21:34
Seed The click is evident with mppenc 1.14/1.15r until ... Feb 1 2004, 22:26
guruboolez Good point. --insane is working flawlessly on my s... Feb 1 2004, 22:38
Seed Since the problem exists with FAAC all the way unt... Feb 1 2004, 22:58
Seed One last observation: mppenc 1.95z67 fails at up t... Feb 1 2004, 23:46
Pio2001 Isn't the problem similar to encoding a ... Feb 2 2004, 00:48
hujay Added the following files to the uploads
silent1.... Feb 2 2004, 04:45
Shockwave Not to go off subject here Pio, but what proggy di... Feb 2 2004, 06:25
Pio2001 Thank you for the samples, Hujay, I'll check t... Feb 2 2004, 12:23
hujay I'll be very interested to see what you can co... Feb 2 2004, 13:32
Pio2001 I didn't manage to process the samples like I ... Feb 2 2004, 19:48![]() ![]() |
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