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- Content .- Fans (48) . 

Impulse - PulseAudio visualizer

   0.5.5  

Screenlet

Score 81%
Impulse - PulseAudio visualizer
zoom


Impulse - PulseAudio visualizer
zoom


Impulse - PulseAudio visualizer
zoom


Homepage:  Link
Downloads:  58049
Submitted:  Feb 14 2009
Updated:  Dec 12 2010

Description:

Impulse is a bit of eye-candy for your desktop. It is a widget that displays a graphical spectrum analyzer on your gnome desktop. It is written in c and python and uses GTK and cairo graphics to generate the animation. the impulse library creates a pulse audio connection context that reads the output stream from pulseaudio in a thread natively which can then be read from python. You can specify impulse to either output the raw stream or output the fft of the raw stream.


Requires:
screenlets 1.2
libfftw3-3
libpulse0


Install:
1) Download and extract Impulse.tar.bz2
2) mv Impulse ~/.screenlets/
then open up the screenlets manager and start Impulse or open screenlets manager and click Install, navigate to the Impulse.tar.bz2 archive and click ok.




Changelog:

Impulse 0.5.5
Fixed issue cause by latest Ubuntu update and added ability to change the audio source. Also updated the default theme.

Impulse 0.5.0
New structure. Themes now editable.

Impulse 0.2.4
Fixed screenlet menu bug and use a smarter way to identifying the pa monitor source.

Impulse 0.2.2
Added new screenlet themes

Impulse 0.2.0
Project is under a new name, Impulse. Now natively captures PulseAudio output source

Spectrolet 0.1.4:
Switched from ESOUND to Pulseaudio

Spectrolet 0.1.2:
Now preforms an fft on the audio stream

Spectrolet 0.1.0:
Now uses gtk.main correctly










LicenseGPL
(Impulse screenlet x86)
(Impulse screenlet x86_64)
(Impulse All)
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.

 No Action

 
 by bearcatsandor on: Jan 29 2010
 
Score 50%

Like a few others, it's just a bar sitting there. Pulseaudio is working just fine.

I've adjusted volumes and nothing makes it move. I have an hdmi card and switching to that doesn't make it move either. No error messages in terminal when run. I see a "cimpulse" under the Applications tab of the pulse audio sound preferences, but moving that slider doesn't do anything to make it move either.

pygtk:2.14.1-r1
pycairo: 1.8.8
pulseaudio: 0.9.19
fftw: 3.2.2
screenlets: 0.1.2
kernel 2.6.31
Gentoo system.

Any ideas at all?

Thanks.


Reply to this

-
.

 No Action

 
 by bearcatsandor on: Jan 29 2010
 
Score 50%

Like a few others, it's just a bar sitting there. Pulseaudio is working just fine.

I've adjusted volumes and nothing makes it move. I have an hdmi card and switching to that doesn't make it move either. No error messages in terminal when run. I see a "cimpulse" under the Applications tab of the pulse audio sound preferences, but moving that slider doesn't do anything to make it move either.

pygtk:2.14.1-r1
pycairo: 1.8.8
pulseaudio: 0.9.19
fftw: 3.2.2
screenlets: 0.1.2
kernel 2.6.31
Gentoo system.

Any ideas at all?

Thanks.


Reply to this

-
.

 Re: No Action

 
 by nocountryman on: Jun 4 2010
 
Score 50%

open sound properties.
go to hardware
select the HDMI
and in the settings for the selected device, choose off, should do the trick :)


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-

 Re: Re: No Action

 
 by larryni on: Jul 2 2010
 
Score 50%
larrynilarryni
Home
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Laurent K 5

United Kingdom, Derry, Northern Ireland
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Nice one, that did the trick :o)


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 How to use without screenlets

 
 by wlourf on: Feb 15 2010
 
Score 50%

Hi, this is great work but is it possible to use the python script by itself?

For example, I've done that :
Quote:

if __name__ == "__main__":

try:
import ctypes
libc = ctypes.CDLL('libc.so.6')
libc.prctl(15, os.path.split( sys.argv[ 0 ] )[ 1 ], 0, 0, 0)
except Exception:
pass


audio_sample_array = impulse.getSnapshot( False ) #True or False make any difference
print (audio_sample_array)

but the output is only zeros :
(0.0, 0.0, ... 0.0)

Can I except to get some informations returned with the code above ?
It's because I don't use gnome but openbox with conky and want to port this to conky (you can see my widget http://u-scripts.blogspot.com/2010/02/equalizer-widget-11.html but now I would like to do an audio equalizer)

Thanks


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 Re: How to use without screenlets

 
 by ianimal on: Feb 17 2010
 
Score 50%

impulse is simple to reuse.

Quote:

import impulse, time
while 1:

time.sleep( .3 )
print impulse.getSnapshot( True )



should print out an array of floats each between 0 and 1, which represents the height of the wave as a percent. Passing True into getSnapshot will make impulse perform a fft (fast fourier transform) on the audio snapshot. I am not sure why you are getting all zeros. Either (sorry for asking this) no audio is playing when you run your script or you have multiple output devices and the output device used is not the first device recognized by PulseAudio. Impulse has a current limitation that it picks the first output audio device from PulseAudio and does not provide an interface to choose a different output device. If at any point you are interested in contributing code to the project I can add you to the impulse development team on launchpad.net


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 Re: Re: How to use without screenlets

 
 by wlourf on: Feb 17 2010
 
Score 50%

Hi , thanks for your answer.
It now works except for the first run of the loop which return an array of zeros. (It's only this first run I tested before).

Conky works with Lua (and Lua use cairo like your python script), so in my Lua script I called the python script. I think it can be faster if the Lua script call the impulse.so directly. I have no skills in C but I will try to adapt your code for Lua.
Don't know if it's easy, I've found a tuto here :
http://www.wellho.net/mouth/1844_Calling-functions-in-C-from-your-Lua-script-a-first-HowTo.html

I will contact you on Launchpad if I manage to do something


blog for conky [url]http://u-scripts.blogspot.com[url]
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 Re: Re: Re: How to use without screenlets

 
 by wlourf on: Feb 18 2010
 
Score 50%

Hi,

I managed to compile the impulse.c with some modifications for Lua. But now I'm stucked when I run it, I wrote my experiments on this post, so if you have any idea
http://ubuntu-ky.ubuntuforums.org/showpost.php?p=8846190&postcount=174
... thanks in advance !!


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 Re: Re: Re: Re: How to use without screenlets

 
 by wlourf on: Feb 22 2010
 
Score 50%

Hi
Finally, I stay with the python stuff. I managed to do something, what do you think about it?

Here it is:
http://ubuntuforums.org/showpost.php?p=8861782&postcount=175

Can I distribute the two .so librairies with my script or not?
Thanks


Reply to this

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.

 Hi!

 
 by CLEARview on: Apr 16 2010
 
Score 50%

Great screenlet!
Congrats!


mauricio.mora.meza@gmail.com
MSN: mora.meza.mauricio@gmail.com
cell: +51(1)991022757

Reply to this

-
.

 Nice

 
 by sgl on: Apr 24 2010
 
Score 50%

One thing: I'd like customize colours in this one but I cannot. But it's great anyway!!!


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.

 Re: Nice

 
 by CLEARview on: Apr 24 2010
 
Score 50%

Very weird. Because I can edit colors.


mauricio.mora.meza@gmail.com
MSN: mora.meza.mauricio@gmail.com
cell: +51(1)991022757
blog: http://ven-yah-min.blogspot.com/

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 0.1.2

 
 by Naf71 on: Apr 30 2010
 
Score 50%
Naf71Naf71
-
Dr Naf 119

Italy, San Vito al Tagliamento PN
Last visit Mar 2 2014
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how can I have the version 0.1.2 or if i can made some change to get it work on my archlinux? because arch use esound.

Naf


Never say die, until the bones are rotten!
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 Re: 0.1.2

 
 by ianimal on: May 8 2010
 
Score 50%

You can grab it off the launchpad website, https://launchpad.net/impulse.bzr


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 Re: Re: 0.1.2

 
 by Naf71 on: May 10 2010
 
Score 50%
Naf71Naf71
-
Dr Naf 119

Italy, San Vito al Tagliamento PN
Last visit Mar 2 2014
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Thanks, but I switch my archlinux from esound to pulseaudio and everything work fine with your latest version.

Naf


Never say die, until the bones are rotten!
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