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- Content .- Fans (49) . 

Impulse - PulseAudio visualizer



Score 81%
Impulse - PulseAudio visualizer

Impulse - PulseAudio visualizer

Impulse - PulseAudio visualizer

Homepage:  Link
Downloads:  60186
Submitted:  Feb 14 2009
Updated:  Dec 12 2010


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.

screenlets 1.2

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.


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

(Impulse screenlet x86)
(Impulse screenlet x86_64)
(Impulse All)
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 wont launch

 by chaoticseraph on: Jun 19 2009
Score 50%

I installed it correctly, when I click add/launch on the screenlets manager, nothing happens at all. I'm new to ubuntu, and I'm not sure how to fix this by myself. Any help?

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 Re: wont launch

 by ianimal on: Jun 20 2009
Score 50%

Click on Impulse in the screenlets manager and click "Close All" on the left side bar. Hit "Alt+F2" and type in "gnome-terminal", then click run. When the terminal pops up type in this command:


If the output is long just P.M. it to me otherwise just reply to this comment with the output.

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 Re: Re: wont launch

 by chaoticseraph on: Jun 21 2009
Score 50%

I did what you said, and this is what it gave me in the terminal.

laura@Anemane:~$ .screenlets/Impulse/ImpulseScreenlet.py
CachingBackend: Loading instances from cache
No global tempdir found, creating new one.
Temp directory /tmp/screenlets created.
Creating new entry for ImpulseScreenlet in /tmp/screenlets/screenlets.laura.running
Loading instances in: /home/laura/.config/Screenlets/Impulse/default/
No instance(s) found in session-path, creating new one.
Traceback (most recent call last):
File ".screenlets/Impulse/ImpulseScreenlet.py", line 119, in <module>
screenlets.session.create_session( ImpulseScreenlet )
File "/usr/lib/python2.6/dist-packages/screenlets/session.py", line 472, in create_session
File "/usr/lib/python2.6/dist-packages/screenlets/session.py", line 246, in start
sl = self.screenlet(session=self, id=self.__get_next_id())
File ".screenlets/Impulse/ImpulseScreenlet.py", line 47, in __init__
import impulse
ImportError: /home/laura/.screenlets/Impulse/impulse.so: wrong ELF class: ELFCLASS64

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 Re: Re: Re: wont launch

 by ianimal on: Jun 21 2009
Score 50%

Ah, ok. So go into the Screenlets manager, click on Impulse and click uninstall. Then click the 1st download link on this site, it is labled "Impulse screenlet x86", download it, and install that one. You must have just downloaded the 64 bit version whereas your cpu is 32 bit.

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 Re: Re: Re: Re: wont launch

 by chaoticseraph on: Jun 22 2009
Score 50%

That worked. Thank you. Sorry for the hassle.

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 two sound cards

 by bulis88 on: Jun 27 2009
Score 50%

thanx for this great screenlet. It's the best screenlet ever.
I'm using Jaunty and have two sound cards... one intergrated HDA Intel and the other one is SB Live PCI. When I listen music over HDA Intel there are no visualisations in this screenlet. I have to move the stream to the other soundcard to be able to see the visualisations. Is there any way to fix this issue?thx

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 working on gentoo

 by pinklerose on: Jun 28 2009
Score 50%
pinklerose.p l

Maybe someone run this screenlet on gentoo with success?

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 No pulseaudio

 by protic on: Jul 3 2009
Score 50%

if u guys don't know we need to remove pulseaudio completely to run skype successfully, however the screenlet seems amazing can u guys please tell me how to get it to work with alsa sound system?

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 Looks wonderful

 by colordrops on: Jul 7 2009
Score 50%

but it seems to only sample the music every 5 seconds or so, so it gets stuck in the same shape until the next update, not moving at all. What's going on?

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 Wonderful, but not working!

 by Dalle1985 on: Jul 18 2009
Score 50%

Okay, so this is really bugging me: I installed the screenlet without a problem, but when i try to launch it, nothing happens... So I tried some different things, but nothing worked.
I launched it in a terminal just to see what was happening, but no errors occured, it just said that it was overiding options because it found a theme.

I've also tried uninstalling it and reinstalling it (several times), but to no avail.

By accident however (compiz crashed) I found out that as soon as compiz isn't running, "Impulse" works fine. By typing "emerald --replace" which makes all my window decorations look really bad, Impulse starts, so it seems to be some sort of conflict with compiz.

I'm running Ubuntu Jaunty BTW.

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