11 Mar
2013
11 Mar
'13
1:07 a.m.
I'm searching a spectrum analyzer software.
What do you recommend?
I've tried JAAA but it's not much user-friendly and there's no manual.
I'd like to visualize the harmonics produced by a guitar string.
How can I achieve what I see in this screenshot?
http://kokkinizita.linuxaudio.org/linuxaudio/jaaa-pict.html
Any other suggestion is welcome.
Thanks
--
Federico
11 Mar
11 Mar
1:18 a.m.
Hi Federico,
i think SonicVisualizer would be great for your pourpose.
http://www.sonicvisualiser.org
Lore
2013/3/11 Federico Bruni <fedelogy(a)gmail.com>
I'm searching a spectrum analyzer software.
What do you recommend?
I've tried JAAA but it's not much user-friendly and there's no manual.
I'd like to visualize the harmonics produced by a guitar string.
How can I achieve what I see in this screenshot?
http://kokkinizita.linuxaudio.**org/linuxaudio/jaaa-pict.html<http://kok…
Any other suggestion is welcome.
Thanks
--
Federico
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1:55 a.m.
On 03/10/2013 05:08 PM, Federico Bruni wrote:
I'm searching a spectrum analyzer software.
What do you recommend?
I recommend JAPA.
I've tried JAAA but it's not much
user-friendly and there's no manual.
JAAA is for making precise engineering measurements and doesn't take
into account how your ears work.
I'd like to visualize the harmonics produced by a
guitar string.
How can I achieve what I see in this screenshot?
http://kokkinizita.linuxaudio.org/linuxaudio/jaaa-pict.html
Well, that screenshot is showing a peak around 26kHz... way above what
you can hear. And the range you're interested in is all squashed on the
left-hand side of the screen between 0 and 2.5kHz.
Assuming you've got a laptop with stereo in/out:
1. Start JAPA: japa -A
2. Mute your speakers since it outputs pink noise.
3. Play your guitar into a mic. You should see what you're
looking for (limited by the quality of mic and amount of
ambient noise).
I don't think JAPA give you a way to freeze the screen and mark a peak.
If you use JACK (-J instead of -A), you have more control over
pink/white noise output.
-gabriel
1:25 p.m.
On Sun, Mar 10, 2013 at 05:55:16PM -0700, Gabriel M. Beddingfield wrote:
22.6678 kHz actually. It's trivial to zoom in on the range of interest,
see the second picture.
* Click on Frequency:Max, then either:
1. type the max frequency into the text entry + ENTER,
2. or use the '<' and '>' buttons.
3. or use the mouse wheel.
4. or position the mouse near the right edge, and move it
to the left while holding the right mouse button.
All parameters (the current one lights up in yellow) can be modified by
(1,2,3). Dragging the mouse (4) is possible only for the frequency and
amplitude ranges.
You'll also want to reduce the bandwidth. Click on Analyser:Bandw,
and use e.g. the mouse wheel to change it while you play some notes.
When all is set up as desired, play some notes and click 'Freeze' at
the right time. It's still possible to change the F and A ranges, set
and change markers etc. while the display is frozen.
Ciao,
--
FA
A world of exhaustive, reliable metadata would be an utopia.
It's also a pipe-dream, founded on self-delusion, nerd hubris
and hysterically inflated market opportunities. (Cory Doctorow)
>I've tried JAAA but it's not much
user-friendly and there's no manual.
The README explains how to use the controls. It's minimal but everything
essential is in there.
JAAA is for making precise engineering measurements
and doesn't take
into account how your ears work.
In this case (measuring harmonics) it shouldn't take your ears
into account. JAAA has a linear F axis, this is ideal for seeing
harmonics as they are all equally spaced.
I'd like to
visualize the harmonics produced by a guitar string.
How can I achieve what I see in this screenshot?
http://kokkinizita.linuxaudio.org/linuxaudio/jaaa-pict.html
Well, that screenshot is showing a peak around 26kHz... way above
what you can hear. And the range you're interested in is all
squashed on the left-hand side of the screen between 0 and 2.5kHz.
10:42 p.m.
Il 11/03/2013 01:55, Gabriel M. Beddingfield ha scritto:
If you use JACK (-J instead of -A), you have more
control over
pink/white noise output.
I want to use JACK.
Well, probably I _must_ use JACK, since I don't know hot to record
otherwise.
But both JAAA and JAPA "refuse" JACK.
I launch JACK first then jaaa or japa with -J
It seems that it falls back to ALSA and can't hear a sound.
--
Federico
10:53 p.m.
On Mon, Mar 11, 2013 at 10:43:48PM +0100, Federico Bruni wrote:
I want to use JACK.
Well, probably I _must_ use JACK, since I don't know hot to record
otherwise.
But both JAAA and JAPA "refuse" JACK.
What do you mean by 'refuse' ?
Are there any error messages ?
I launch JACK first then jaaa or japa with -J
It seems that it falls back to ALSA and can't hear a sound.
There is no such fallback.
Ciao,
--
FA
A world of exhaustive, reliable metadata would be an utopia.
It's also a pipe-dream, founded on self-delusion, nerd hubris
and hysterically inflated market opportunities. (Cory Doctorow)
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4 participants
participants (4)
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Federico Bruni -
Fons Adriaensen -
Gabriel M. Beddingfield -
Lorenzo Cecchi