Musical Instrument Tuner - Precise Tone Generator
© Ing. Radovan Konečný - radkon, 2008-2017
Download the program:
To run this program, you must have Java JRE installed.
Principle of operation
This tuner works on the principle of generating the precise tone frequency. Due to the minor imperfections of the human ear, the phenomenon called the beat is heard when listening to two close tones, which could be described as a cyclic color variation or a cyclic sound intensity variation. The frequency of this variation is equal to the difference in frequencies of the two tones. If the frequencies of the tones are closer, the beat is slower, and when the tones are perfectly matched, the beat stops. Using this comparing the tones, it is probably possible to tune each musical instrument.
- first a tone of 440Hz, then a tone of 443Hz and finally together - a 3Hz beat (i.e. 443-400=3)
Many musical instruments have their sound more complicated - the mathematical principles do not apply to the frequency spectrum, e.g. the frequency of the tenth harmonic does not exactly equal ten times the frequency of the first harmonic. This property is called inharmonicity. This property have common musical instrument containing strings (e.g. piano).
Common electronic tuners select only one harmonic component (perhaps the first harmonic) from the instrument sound spectrum. According to this, they show the detuning. They disregard inharmonicity and the resulting listening impression of tune.
This tuner, based on listening two-tone comparison, allows for better tune-up of the musical instrument. It also takes into account the tuning of higher harmonics even when the first harmonic is not exactly tuned. However, the subjective impression of such a tuned instrument is much better than that of tuning only according to the first harmonic component.
Creating a custom tone set
If you need to tune a musical instrument that has only a few tones, you can create your custom set of tones and use them in the tuner. After choosing such a set, only those tones that are listed in the set will be available, including detune ability. Tuner allows to define up to 5 custom tone sets.
At startup, the program loads the files
To create a custom tone set, you need to create a file in the program directory - e.g.
In the row
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