Paketinformationen
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
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.
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