it looks like it not completely limited to 18..22 kHz, there's *something* visible from about 6 kHz but it's very quiet.
Yes, but it's an audio codec, not an image compressor so if it's below the audible threshold it's irrelevant. I pointed out the >18kHz part because that is much louder, not present in the original, probably audible to others who can hear higher up the spectrum, and may explain why some people reported hearing the problem and others do not.
maybe it could be possible to hear it on some other tracks.
If it is correlated to signal amplitude, which is the typical case, it's not going to be.
I'm going to try to eliminate the re-sampler as the origin.
The behaviour is the same as before. I just changed the wording to try and make it clearer when its cycling and when it isn't. For info:
Photo: Cycle. Cycles images in the set Image [Artist] Folder. This is where last.fm artist images are saved, and so it was logical to name the choice as "Cycle Last.fm". You could change this to another folder and disable downloading if you want a different set of images.
Photo: Artist. This loads a single image & that was how it worked before. It loads from "foobar2000 > preferences > display > album art > artist pattern".
I couldn't reproduce the issue under normal usage.
However, it looks to me as though the blacklist file has become corrupted and isn't in a valid json format for some reason or another, although I've not seen the script write it incorrectly. I could reproduce the effect by manually editing the blacklist file so it wasn't valid. Can you try deleting fb.ProfilePath\yttm\blacklist.json (or rename if you want to keep it) and see if the issue disappears? If that's what it is, I can add some extra validity checking to stop the script error etc.
Last post by magicgoose -
it looks like it not completely limited to 18..22 kHz, there's *something* visible from about 6 kHz but it's very quiet. maybe it could be possible to hear it on some other tracks.
Last post by Garf -
I had a discussion with jmvalin about this issue last time we met, but there was some uncertainty regarding the tools used to encode or decode, exact versions with or without latest fixes etc, so I had a closer look.
I compiled the latest master (21st Jan 2019) of all opus related tools (libopus, libopusenc, libopusfile): opusenc opus-tools 0.2-3-gf5f571b (using libopus 1.3-10-gf5790833) Copyright (C) 2008-2018 Xiph.Org Foundation
Encoded both files with opusenc, decoded with opusdec, and stitched together with sox.
I cannot hear a glitch in this file. The file is a bit weird which makes listening tricky. If I increase the volume too much, my Sennheisers start reverberating, and played with speakers there's too much inter-modulation going on.
That said, a closer look at the file reveals that a) there is indeed a sort of glitch b) it becomes obvious why I can't hear it. See attached image. The glitch is very high up in the frequency range, from 18kHz to about 22kHz.
I'm not clear what causes it. The position in the spectrum doesn't exclude the resampler, I think.