7 Oct
2013
7 Oct
'13
10 p.m.
On Monday 07 October 2013 15:53:52 Robin Gareus did opine:
On 10/07/2013 11:59 AM, Jِrn Nettingsmeier wrote:
Your attempt at applying a trade mark to that word is about 45 or 50 years
late, that was the term used to describe a rotary transformer used to
rotate the display in color tv (NTSC days) vectorscopes first built by
Tektronx.
On 10/05/2013 06:56 PM, Robin Gareus wrote:
lol. yeah, VU meters just exist to look nice :)
Even most of the hardware ones are utterly useless (see "[LAD] vu-meter
DSP" this July). At least this one does conform to spec. Thanks Fons.
Additionally it includes a Stereo Phase
Correlation Meter (needle
Display), an EBU-R128 Meter (also based on Fons' implementation) with
Histogram and History display, a Digital True-Peak Meter (4x
Oversampling, using zita-resampler), a Stereo Phase Scope
(Goniometer) and a 31 Band Spectrum-Analyzer.
(insert usual friendly ridicule of animated VU meters here) but hey, it does look nice! i've always had
this fondness for
jellyfish meters.
The goniometer(TM) aka Stereo Phase Scope is not a jellyfish display. JF
would be a surround 5.1 variation. I was actually positively surprised how much
information is displayed by
a goniometer. It takes a while to learn to read it, but it's amazing.
Yes it is. The learning part however, does separate the wannabees from the
doers though.
We (Chris, Axel and I) went through various stages
including
video-taping the LV2 plugin display in order to improve readability and
usefulness. The default preset is very close to that of a DK-Tech MSD600
Cheers, Gene
--
"There are four boxes to be used in defense of liberty:
soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
A prohibitionist is the sort of man one wouldn't care to drink with
-- even if he drank.
-- H. L. Mencken
A pen in the hand of this president is far more
dangerous than 200 million guns in the hands of
law-abiding citizens.
and the radar-style r128 meter is a very welcome
addition to the
toolbox, having this history information at a glance is very helpful
indeed. thanks for sharing this!
built without problems and seems to run very smoothly.
great. thanks for the feedback.
i believe radar meters have a bright future in
different applications.
for instance, to provide limiter history. fons' zita-dpl1 has
short-term history already, which is extremely helpful. but to
imagine something that listens to transport information and provides
history of a whole song, plus "locate to peaks" from the history so
that i can manually tame parts where the limiter cut in too sharply,
that would be awesome.
'locate to peaks' is a very nice idea. However I'm not aware of any
plugin standard that allows to control the host's transport. A LV2
extension could do that, though. zita-dlp1 could do this via
jack-transport.
i'm currently trying to make sense of the
libcairo version number in
opensuse tumbleweed, but i guess our lady of the segmentation fault
will let me know if there is a problem...
Depends. Thread-safety and concurrency issues may rather produce strange
effects than segfault right away. It's mainly the EBUR128 meter (rapid
font rendering), Try adding two or more instances of the openGL variant.
It also depends on your graphics card. The plugins render directly to
graphic card memory. It works fine here with an old intel-945 and some
nvidia cards that I have tested: zero CPU. But Axel has various problems
with his Radeon on debian/stable. Also x11/xcb can make a huge
performance difference. -- Anyway, the concurrency issues
cairo/pixman/pango + x11/opengl have been fixed upstream and will soon
find their way int various distros if they have not yet done so.
Cheers!
robin
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