KDE-Apps.org Applications for the KDE-Desktop 
 GTK-Apps.org Applications using the GTK Toolkit 
 GnomeFiles.org Applications for GNOME 
 MeeGo-Central.org Applications for MeeGo 
 CLI-Apps.org Command Line Applications 
 Qt-Apps.org Free Qt Applications 
 Qt-Prop.org Proprietary Qt Applications 
 Maemo-Apps.org Applications for the Maemo Plattform 
 Java-Apps.org Free Java Applications 
 eyeOS-Apps.org Free eyeOS Applications 
 Wine-Apps.org Wine Applications 
 Server-Apps.org Server Applications 
 apps.ownCloud.com ownCloud Applications 
 KDE-Look.org Artwork for the KDE-Desktop 
 GNOME-Look.org Artwork for the GNOME-Desktop 
 Xfce-Look.org Artwork for the Xfce-Desktop 
 Box-Look.org Artwork for your Windowmanager 
 E17-Stuff.org Artwork for Enlightenment 
 Beryl-Themes.org Artwork for the Beryl Windowmanager 
 Compiz-Themes.org Artwork for the Compiz Windowmanager 
 EDE-Look.org Themes for your EDE Desktop 
 Debian-Art.org Stuff for Debian 
 Gentoo-Art.org Artwork for Gentoo Linux 
 SUSE-Art.org Artwork for openSUSE 
 Ubuntu-Art.org Artwork for Ubuntu 
 Kubuntu-Art.org Artwork for Kubuntu 
 LinuxMint-Art.org Artwork for Linux Mint 
 Arch-Stuff.org Art And Stuff for Arch Linux 
 Frugalware-Art.org Themes for Frugalware 
 Fedora-Art.org Artwork for Fedora Linux 
 Mandriva-Art.org Artwork for Mandriva Linux 
 KDE-Files.org Files for KDE Applications 
 OpenTemplate.org Documents for OpenOffice.org
 GIMPStuff.org Files for GIMP
 InkscapeStuff.org Files for Inkscape
 ScribusStuff.org Files for Scribus
 BlenderStuff.org Textures and Objects for Blender
 VLC-Addons.org Themes and Extensions for VLC
 KDE-Help.org Support for your KDE Desktop 
 GNOME-Help.org Support for your GNOME Desktop 
 Xfce-Help.org Support for your Xfce Desktop 
openDesktop.orgopenDesktop.org:   Applications   Artwork   Linux Distributions   Documents    Linux42.org    OpenSkillz.com   


- Content .- Fans (3) .- Knowledge Base  . 



KDE Sound Application

Score 66%


Homepage:  Link
Minimum required   KDE 4.x
Downloads:  249
Submitted:  Dec 27 2009
Updated:  Jul 26 2010


K4Guitune is a program to tune a musical instrument using your computer and its microphone or line-in input.

The pitch detection algorithm is based on finding the first peak in the autocorrelation of the input signal.

K4Guitune offers:

* two systems of musical tuning: equal temperament and just intonation;

* three reference pitches: normal (440 Hz), French (435 Hz) and scientific (430.54 Hz);

* three sets of note names: English, German and Italian.

It's a port to KDE4 of K3Guitune.

The estimated pitch is displayed on a bar (1). The detected pitch is shown by two triangles (2), showing whether the estimated pitch is lower or higher than the correct one. When they are both shown, as in the current example, the note is perfectly in tune (error < 2.5 cents).

Detailed information about the pitch detection are shown on the left: the estimated frequency (3) is shown above and the estimated pitch (4) is shown below. The program doesn't require to select the note to tune manually, but it will be found automatically.

The waveform of the input signal is plotted over a time scale of 20 milliseconds (5). The autocorrelation of the signal is displayed (6), with a red bar showing the estimated frequency (7).

The tuner uses the default OSS audio device. The desired recording source and the signal recording levels can be adjusted using a sound mixer.


Version 1.1.0
* Initial release

Version 1.1.1
* Fixed a crash when /dev/dsp is already in use. Now an error messagebox is displayed.
* Fixed a bug that caused settings to be changed only after application restart and not immediately after that change.

Send to a friend
Other  Apps  from wylliam
Report inappropriate content

goto page: prev   1  2 



 by damian01w on: Jul 29 2010
Score 63%

Good work!

Added to Archlinux AUR:



Reply to this



 by BlueBoy on: Nov 12 2010
Score 50%

Thanks for this useful application.
This is the link for Mandriva binary .rpm package:



Reply to this


 Awesome work but...

 by fadnix on: Jun 20 2011
Score 50%

Thanks for the port, I use K3guitune as an oscilloscope for analog data (not musical instruments) under Fedora14-KDE4 and it works an is able to autodetect my sound card (since i use ALSA+Pulseaudio, and don't have the /dev/dsp file).
However, your ports could not find the sound card so I used the PulseAudio OSS Wrapper "padsp" to emulate the /dev/dsp. like this "padsp k4guitune"
Now it opens, but no signals :(

I have used "padsp" with other applications and it works but not sure why this one does not. Could you please help...

Reply to this


 Re: Awesome work but...

 by fadnix on: Jun 20 2011
Score 50%

Update: The K3Guitune I use is packaged for fedora and it includes the patch for fftw library and also some other sound server fixes by fedora people, so that could be the reason why it works with ALSA server, not sure if these are also there in the original 1.01 code since I did not compile the source.

Reply to this

goto page: prev   1  2 

Add commentBack

How do you like Plasma 5?
 The best KDE Desktop ever.
 Definitely a nice improvement.
 Not decided yet. Haven't tried it yet.
 I do not like some of the changes.
 KDE is taking the wrong way.
 I am still sticking with KDE 3.5.
 I have no opinion, but wanted to vote anyway.

 Who we are
More about us
Frequently Asked Questions
Updates on identi.ca
Updates on Twitter
Content RSS   
Events RSS   

Add App
Public API
About KDE-Apps.org
Legal Notice
Spreadshirt Shop
CafePress Shop
Sponsor us
Report Abuse

Copyright 2003-2016 KDE-Apps.org Team  
All rights reserved. KDE-Apps.org is not liable for any content or goods on this site.
All contributors are responsible for the lawfulness of their uploads.
KDE and K Desktop Environment are trademarks of KDE e.V.