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K4Guitune

   1.1.1  

KDE Sound Application

Score 66%
K4Guitune
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K4Guitune
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Homepage:  Link
Minimum required   KDE 4.x
Downloads:  246
Submitted:  Dec 27 2009
Updated:  Jul 26 2010

Description:

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.




Changelog:

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.
*




LicenseGPL
(k4guitune-1.1.1.tar.gz)
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 AUR

 
 by damian01w on: Jul 29 2010
 
Score 63%

Good work!

Added to Archlinux AUR:

http://aur.archlinux.org/packages.php?ID=39261

Thanks


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-
.

 Thanks

 
 by BlueBoy on: Nov 12 2010
 
Score 50%

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

http://files.myopera.com/Anaximandar/Mandriva_2010_1/k4guitune-1.1.1-1mdva2010.1.i586.rpm

Regards


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-

 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...


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.

 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.


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