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Rockbox mail archiveSubject: Re: Noticable Pop Between Tracks (Sansa)Re: Noticable Pop Between Tracks (Sansa)
From: R.L. Horn <lists_at_eastcheap.org>
Date: Sat, 28 Feb 2009 05:14:18 -0600 (CST) On Fri, 27 Feb 2009, David Hall wrote: > R.L. Horn wrote: >> Bizarrely, if I encode using --nogap and --nogaptags, I don't, but the >> splice isn't as noticeable as with tagless (and gapless) streams. >> > In this latest experiment are you merging the two MP3 files into one? No, though I did strip the Info tags and concatenate the streams to confirm that they were, in fact, gapless. Repeating with a slightly more complex audio sample (an A-major chord) brought back the inter-track "tick", with or without Info tags. I'm now inclined to believe that the supposed seamlessness of the aforementioned separately-encoded-and-tagged streams (440Hz sine wave) was a fluke. Further complicating matters is the fact that I'm having trouble making sense of the tags generated by lame (3.98.2). In particular, they're showing a 576-sample encoder delay, even for the --nogap streams. At first, I thought this was attributable to the tag frame itself, but MPEG1 Layer III uses 1152-sample frames. As this is rapidly spiraling outside of my, admittedly limited, realm of expertise, I've made my test files, along with a Bourne shell script to strip the tags from the --nogap streams, available at: http://www.eastcheap.org/gaptests/gaptests.tar.bz2 Anyone interested is more than welcome to give them a listen. ------------------------------------------------------------------- List admin: http://cool.haxx.se/cgi-bin/mailman/listinfo/rockbox FAQ: http://www.rockbox.org/twiki/bin/view/Main/GeneralFAQ Etiquette: http://www.rockbox.org/mail/etiquette.html Received on 2009-02-28 Page template was last modified "Tue Sep 7 00:00:02 2021" The Rockbox Crew -- Privacy Policy |