JAPA - spectrum analyzer

What other apps and distros do you use to round out your studio?

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lilith
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JAPA - spectrum analyzer

Post by lilith »

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
Plug&Play
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Re: JAPA - spectrum analyzer

Post by Plug&Play »

Does anyone know if there's a manual or something??
I just started using it - I keep notes, here's what I have:

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 never found any help with this, or much discussion. It worked for me once I got the scale and gain set.

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 !
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