This is the main tuning screen. The top of the page shows current settings. For example, the left side might show something like this:
The top line is the name of the currently-loaded tuning file. If you choose a non-equal temperament, the next line shows the name of that temperament. Otherwise the second line is blank. The next line is the current partial in use. This is normally the fundamental for higher notes and higher partials for the lowest notes. The partial is automatically set according to which note is selected. Finally, we see the calculated target frequency in Hz for the current note and partial, taking all offsets into account.
An example of the right side of the display is shown here. The top line is the overall offset. This line is blank if the offset is zero. The blank space below the offset is for the rarely-used custom offset or to indicate a Split-Scale tuning. The line labelled TCurve
shows the offset for the current note as determined by the current
tuning curve. If you have chosen an historical (non-equal)
temperament, the line labelled Temper shows the offset determined by that temperament. Otherwise that line is blank. The last line shows the type of note switching in effect (manual or auto). These fields are slightly rearranged when the device is rotated to landscape orientation.
Below the current settings is the Phase Display, which is used for fine tuning. The squares move left for flat and right for sharp. See below for Gestures involving the Phase Display.
Under the Phase Display is the Current Note Display. If you tap on this display, you will be able to manually select any note or octave. The bar above the note shows how close the tuning is to the target pitch. This bar begins filling in with a dark green color when the tuning is within one cent. The bar shown here indicates a tuning error of about 0.6 cents (the part that remains to be filled in). See below for Gestures involving the Current Note Display.
Next comes the Spectrum Display. The vertical red line in the center represents the target pitch. The graph shows a peak for each pitch present. The Spectrum Display may be zoomed in or out to various zoom levels on the Settings page, or through pinch gestures. See below for other Gestures involving the Spectrum Display.
This button switches to the graph of the tuning curve and the deviation curve. There you can view the tuning curve and make optional adjustments to the stretch.
This button starts a measurement of inharmonicity. Tap this button, then play the note and hold it for up to six seconds. Mute all but one string.
This
button turns on locking mode, which automatically adjusts the offset to match the sound from the microphone. Turn off locking mode promptly when the tone you were locking to is no longer present.
This
button switches to the mode where TuneLab generates the target tone
in the speaker, rather than listening to the microphone.
This image appears in place of a button when the function of that button switches to stopping the operation or mode that was just entered.
This
is the Settings button, which sets many configuration
parameters and performs a variety of other functions. See the
help for that page for more information.
Using the Files button in the upper left corner of the screen, you can load and store tuning files, start a new tuning, enter notes about the current tuning, and manage Dropbox cloud storage.
Gestures:
Adjust the offset by swiping left or right through the Phase Display. The Phase Display will turn yellow to indicate that offset adjustment is enabled.
Zero the offset by touching the Phase Display with two fingers at once.
Change Notes by tapping the left or right lower quadrants of the Spectrum Display.
Change Octaves by tapping the left or right upper quadrants of the Spectrum Display.
Change Directly to any Note and Octave by tapping the Current Note Display.
Change Partials by swiping from left to right or right to left across the entire Spectrum Display.
Zoom the Spectrum Display in or out using a two-fingered pinch gesture inside the Spectrum Display. Six zoom levels are available.
Disable Auto Note Switching by swiping from the Current Note Display to the left side of the screen.
Enable Auto Note Switching and Change the Type of Auto Note Switching by swiping from the Current Note Display to the right side of the screen.
Go directly to the most recent Setting screen by touching and holding the Settings button.
If there is a non-zero off
set that you wish to transfer to the Custom Offset applied to the current note only, you can make that transfer by dragging your finger from the area around the offset to the current note display, as illustrated here. You can reset the Custom Offset to zero by using the Custom Offsets item in the Settings.