I was playing with JAPA yesterday to compare several mixes. Does anyone know if there's a manual or something?? Especially what the warp parameter is doing? When feeding pink noise into the input I get a flat curve and it stays flat when changing the warp paramter. But with music I see quite drastic changes.
http://kokkinizita.linuxaudio.org/linuxaudio/
https://wiki.linuxaudio.org/apps/all/japa
JAPA - spectrum analyzer
Moderators: MattKingUSA, khz
Re: JAPA - spectrum analyzer
I just started using it - I keep notes, here's what I have:Does anyone know if there's a manual or something??
Code: Select all
HowTo us japa
~~~~ 06:33 PM Wednesday 24 Feb 2021 ~~~~b]channel gain[/b]
The short description is
$ info japa
I opened QjackCtl , and ran it with what ever defaults I normally use.
$ japa -J
That opened the japa gui display as expected.
japa appeared in JACK connection, I was able to connect system to japa.
( I have an AudioBox USB - it appears as a "system" device in jack)
Then I used japa gui controls:
bottom selections
scale: Log or 440 (still a log scale, but annotation is Hz)
range : 60dB worked well get -50 to + 10 ( it seems that +10dB can not be changed.
side bar selections
inputs correspond to JACK connections. Use
input A: 1
input B: 2
The number under input is channel gain, the "Aut" button is for automatic, like AGC
Traces
in A: A
in B: B
There is a matrix of selections, I don't understand yet
The above displays the two microphones on separate channels
~~~~ end ~~~~
I think my easy success was due to having already gotten jack to work reliably with the AudioBox USB device.
I just read
[urlhttps://linuxmusicians.com/viewtopic.php?f=6&t=22691][/url]
and as in that discussion, jack "just works" for me with Audiobox because in jack setup tab the default interface is "hw:USB,0"
Rob
Music Music Music !