2 Nov
2018
2 Nov
'18
4:16 a.m.
Hi all.
Is there software that someone could recommend that would provide a
visual indicator of clipping occuring in a jack stream? Extra points
if the visual indicator remains set until manually reset. Double extra
points if the program can run inside a (linux) command-line
environment?
If there's nothing out there (yet), I'm going to have to try to add
something to jack_meter...
TIA, Jaime
2 Nov
2 Nov
5:21 a.m.
On Fri, Nov 2, 2018 at 11:16 AM Jaime T <enopatch(a)gmail.com> wrote:
Hi all.
Is there software that someone could recommend that would provide a
visual indicator of clipping occuring in a jack stream? Extra points
if the visual indicator remains set until manually reset. Double extra
points if the program can run inside a (linux) command-line
environment?
You can use jack_capture and record to /dev/null
The red color shown when clipping is reset after around 2 seconds though,
but you can probably fix this quite easily in the source code.
5:55 a.m.
On Fri, Nov 2, 2018 at 12:21 PM Kjetil Matheussen
<k.s.matheussen(a)gmail.com> wrote:
On Fri, Nov 2, 2018 at 11:16 AM Jaime T <enopatch(a)gmail.com> wrote:
Apply this patch:
diff --git a/jack_capture.c b/jack_capture.c
index 3f77c56..f62e883 100644
--- a/jack_capture.c
+++ b/jack_capture.c
@@ -647,9 +647,11 @@ static void print_console(bool
move_cursor_to_top_doit,bool force_update){
vu_peaks[ch] = pos;
vu_peakvals[ch] = val;
vu_times[ch] = 0;
+ /*
} else if (vu_times[ch]++ > 40) {
vu_peaks[ch] = pos;
vu_peakvals[ch] = val;
+ */
}
and run this line:
while true ; do jack_capture /dev/null ; done
then you can reset peaks by pressing return.
Hi all.
Is there software that someone could recommend that would provide a
visual indicator of clipping occuring in a jack stream? Extra points
if the visual indicator remains set until manually reset. Double extra
points if the program can run inside a (linux) command-line
environment?
You can use jack_capture and record to /dev/null
The red color shown when clipping is reset after around 2 seconds though,
but you can probably fix this quite easily in the source code. 
1:48 p.m.
On Fri, Nov 02, 2018 at 10:16:18AM +0000, Jaime T wrote:
Hi all.
Is there software that someone could recommend that would provide a
visual indicator of clipping occuring in a jack stream? Extra points
if the visual indicator remains set until manually reset. Double extra
points if the program can run inside a (linux) command-line
environment?
ebumeter has a peak indicator that will flash yellow at -1 dB and
go red until reset at 0 dB. It will also detect inter-sample peaks.
Ciao,
--
FA
5 Nov
5 Nov
6:29 a.m.
Kjetil and Fons,
Thank you so much for the recommendations. While I appreciate
ebumeter's adherence to "EBU R-128", jack_capture is much closer to
what I'm looking for: multi-channel, no dependencies on X, and a very
impressive auto-connection strategy. On a side note, I'm surprised
that something similar to jack_capture's auto-connection strategy has
not yet been incorporated back into the jack server, but then again
I'm new round here so perhaps there is a good reason for that
omission.
Thank you again to you both. With best wishes, Jaime
1:13 p.m.
New subject: [Jack-Devel] Looking for visual "Clipping indicator" (linux command line interface)
On Mon, Nov 05, 2018 at 01:29:34PM +0000, Jaime T wrote:
On a side note, I'm surprised
that something similar to jack_capture's auto-connection strategy has
not yet been incorporated back into the jack server
As far as connections are concerned, JACK merely provides the ports to
connect to. It's analogous to a physical patchbay. It's up to (and
fairly easy for) applications to provide autoconnection if that is
required (it isn't always).
John
1998
days inactive
2001
days old
jackaudio@lists.linuxaudio.org
5 comments
4 participants
participants (4)
-
Fons Adriaensen -
Jaime T -
John Rigg -
Kjetil Matheussen