search for: dithered

https://bugs.freedesktop.org/show_bug.cgi?id=111199 Bug ID: 111199 Summary: Bug in dither.depth property set Product: xorg Version: unspecified Hardware: Other OS: All Status: NEW Severity: normal Priority: medium Component: Driver/nouveau Assignee: nouveau at

While we expose the ability to turn off hardware dithering for nouveau, we actually make the mistake of turning it on anyway, due to dithering_depth containing a non-zero value if our dithering depth isn't also set to 6 bpc. So, fix it by never enabling dithering when it's disabled. Signed-off-by: Lyude Paul <lyude at redhat.com> --- drivers/gpu/drm/nouveau/dispnv50/head.c | 24

While we expose the ability to turn off hardware dithering for nouveau, we actually make the mistake of turning it on anyway, due to dithering_depth containing a non-zero value if our dithering depth isn't also set to 6 bpc. So, fix it by never enabling dithering when it's disabled. Signed-off-by: Lyude Paul <lyude at redhat.com> --- drivers/gpu/drm/nouveau/dispnv50/head.c | 24

While we expose the ability to turn off hardware dithering for nouveau, we actually make the mistake of turning it on anyway, due to dithering_depth containing a non-zero value if our dithering depth isn't also set to 6 bpc. So, fix it by never enabling dithering when it's disabled. Signed-off-by: Lyude Paul <lyude at redhat.com> --- drivers/gpu/drm/nouveau/dispnv50/head.c | 24

From: Lyude Paul <lyude at redhat.com> [ Upstream commit fb2420b701edbf96c2b6d557f0139902f455dc2b ] While we expose the ability to turn off hardware dithering for nouveau, we actually make the mistake of turning it on anyway, due to dithering_depth containing a non-zero value if our dithering depth isn't also set to 6 bpc. So, fix it by never enabling dithering when it's disabled.

From: Lyude Paul <lyude at redhat.com> [ Upstream commit fb2420b701edbf96c2b6d557f0139902f455dc2b ] While we expose the ability to turn off hardware dithering for nouveau, we actually make the mistake of turning it on anyway, due to dithering_depth containing a non-zero value if our dithering depth isn't also set to 6 bpc. So, fix it by never enabling dithering when it's disabled.

From: Lyude Paul <lyude at redhat.com> [ Upstream commit fb2420b701edbf96c2b6d557f0139902f455dc2b ] While we expose the ability to turn off hardware dithering for nouveau, we actually make the mistake of turning it on anyway, due to dithering_depth containing a non-zero value if our dithering depth isn't also set to 6 bpc. So, fix it by never enabling dithering when it's disabled.

...subtle to see these effects. Ofcource i can try and find a way to set the connector property more permanently (if anyone has suggestions besides sticking an xrandr command in my .xinitrc please let me know), but i don't see why we would need to assume that anything but lvds and eDP needs to be dithered. -- Far away from the primal instinct, the song seems to fade away, the river get wider between your thoughts and the things we do and say.

On 03/01/2018 07:21 PM, nouveau-request at lists.freedesktop.org wrote: > > Message: 1 > Date: Thu, 1 Mar 2018 08:15:55 -0500 > From: Ilia Mirkin <imirkin at alum.mit.edu> > To: Mario Kleiner <mario.kleiner.de at gmail.com> > Cc: nouveau <nouveau at lists.freedesktop.org> > Subject: Re: [Nouveau] [PATCH] Fix colormap handling at screen depth > 30. >

From: Lyude Paul <lyude at redhat.com> Nvidia display hardware provides a set of flexible dithering options for CRTCs. This dithering is actually noticeable in the CRC output for all available tap points, and can be seen as CRC values for identical frames cycling between either 2 or 4 values repeatedly (each one of these values is a different dithering phase applied to the source output).

From: Lyude Paul <lyude at redhat.com> Nvidia display hardware provides a set of flexible dithering options for CRTCs. This dithering is actually noticeable in the CRC output for all available tap points, and can be seen as CRC values for identical frames cycling between either 2 or 4 values repeatedly (each one of these values is a different dithering phase applied to the source output).

...> maximum accuracy. ?In my opinion, all sample rate conversions should > preserve the 24-bit results. > > As for your suggestion to look for values in the LSB under a certain > threshold, I think that you have a misunderstanding about dither. ?The LSB > would always be changing in dithered material, regardless of amplitude > thresholds. ?Dither has to be applied to all samples, loud or quiet, or else > it doesn't do its job. ?In other words, dithered audio is going to have > constant motion in the LSB. ?I do think that a dithered 16-bit file stored > in 24 bits might...

...read somewhere that at least Pascal could do some deep color output over HDMI as well, which makes sense for HDMI-based HDR-10 support. > Although setting dither to off should still kill the dithering... > probably some experimentation required. Yes. I can only test the 10 bpc -> 8 bpc dithered output here, as i don't have a native 10 bpc panel available atm. But measurements with the photometer confirmed 10 bpc, ie. the photometer is fooled by the dithering just as well as the human eye, as it integrates over an area of pixels. The dithering is good enough to at least test the wh...

https://bugs.freedesktop.org/show_bug.cgi?id=34680 Summary: Enable dithering by default for eDP panels Product: xorg Version: unspecified Platform: All OS/Version: Linux (All) Status: NEW Severity: normal Priority: medium Component: Driver/nouveau AssignedTo: nouveau at lists.freedesktop.org

https://bugs.freedesktop.org/show_bug.cgi?id=92297 Bug ID: 92297 Summary: dithering detected incorrectly Product: xorg Version: unspecified Hardware: x86-64 (AMD64) OS: Linux (All) Status: NEW Severity: minor Priority: medium Component: Driver/nouveau Assignee: nouveau at

...y good at compressing audio that is not loud. In fact, the quieter the recording, the smaller the FLAC file. I've actually mastered some audio where the final 24- bit FLAC was larger than the original 24-bit FLAC, simply because the amplitude is larger on average after mastering. When dithered to 16-bit, I'd assume that your WAV output is about 183 MB, is that right? Seems like you're saying that this only compresses to 112 MB. That is consistent with a louder file and/or one with more noise. I assume that you may have boosted the level of the recording before ditherin...

On Fri, Mar 2, 2018 at 5:16 PM, Mario Kleiner <mario.kleiner.de at gmail.com> wrote: > On 03/01/2018 07:21 PM, nouveau-request at lists.freedesktop.org wrote: >> >> >> Message: 1 >> Date: Thu, 1 Mar 2018 08:15:55 -0500 >> From: Ilia Mirkin <imirkin at alum.mit.edu> >> To: Mario Kleiner <mario.kleiner.de at gmail.com> >> Cc: nouveau

On Jan 7, 2011, at 18:08, Declan Kelly wrote: > On Fri, Jan 07, 2011 at 05:11:26PM -0800, brianw at sounds.wa.com wrote: > [NIN 24/96] > >> Thanks! That's interesting to note. I think that I ended up with >> the true 24/96 files, but I am curious: How do you tell whether you >> have the full 24/96 or not? > > Extract to WAV, do a hex dump, and look for

...nt me a question late last night and I briefly looked at his file this morning and couldn't figure out the answer, so I'm posting here. A friend has a a ~275MB 24 bit, 48khz stereo wav file of rock music that when compressed using flac level 8 gives a flac file under 110 MB in size. When I dithered his file to 16/48 and converted that file to flac, the resulting flac file was actually 2 MB *bigger* than the corresponding 24/48 flac file. Does this make sense to anyone? He says that his 24/48 files always compress to around the same size as the same files converted to 16/48 or 16/44.1. I co...

Thanks for the replies! My first thought was that the file had low levels (before he sent me the file), but that's definitely not the case with this file. There are many peaks that reach 0dBFS. He sent me the original wav this morning and I loaded it into Wave Editor on OS X. I dithered to 16 bit using MBIT+ (high/ultra setting) and saved the 16 bit file. I did nothing else (no normalizing or any other processing). I can't give you the 16 bit size right now since I'm at work and the file is on my Mac at home, but I can report back tonight. Whatever my process is, though,...