Montal Tuner is a piano tuning aid specifically for blind piano tuners. It should be used with VoiceOver turned on and with headphones plugged in. It provides a sweeping tone in the headphones that simulates the visual feedback of a strobe-type tuner. Audio samples of this sweeping tone and a description of how it guides the tuner are found on our support website. Notable features of Montal Tuner:

* Can be calibrated to an accuracy of 0.02 cents using Internet time servers.
* Measures and uses inharmonicity of the piano to construct a custom tuning for each piano.
* Can store and recall tuning files for individual pianos.
* Switches notes automatically when you play the next note.

Montal Tuner lets you customize a tuning by sampling the inharmonicity for a few notes of the particular piano. Next, you choose the kind of tuning stretch you want, based on octaves, double-octaves, or other intervals. Then you start tuning.

After a custom tuning has been created from inharmonicity measurements, you can store this tuning by name. The next time you need to tune that piano, or one very much like it, you simply load that same tuning file and start tuning. There essentially is no limit to the number of tuning files that you can save. Montal Tuner comes with an "average" tuning file so you can start tuning right away.

Montal Tuner covers the normal piano range from A0 to C8 (88 notes). The automatic note-switching feature makes it possible to enjoy hands-free operation. Montal Tuner switches up to 3 notes up or down from the current note. In addition to automatic note-switching, there is also one-touch manual note switching.

The sweeping tone used by Montal Tuner to simulate a strobe tuner is filtered white noise rather than a pure tone. This allows the user to hear the piano directly while the sweeping tone is sounding. The goal in tuning is to stop the sweeping of the tone - just like stopping the movement of a visual strobe.