DaTuner is a simple, responsive chromatic tuner with adjustable sensitivity... an all-purpose, precise and responsive chromatic tuner with a simple interface. DaTuner converts the fundamental frequency to the nearest note and error in cents for quick and easy tuning of your guitar, ukelele, violin, bass, cello, mandolin, piano, harp, saxophone, balafone, motorbike timing belt, wheel spoke, harmonica, kazoo, you name it.
DaTuner displays nearest note and octave in a giant, easy to read font in the center of the screen, and the fundamental frequency in Hertz is displayed at the bottom of the screen. Error in cents is shown graphically at the bottom of the screen. Microphone sensitivity can be adjusted by touch via a bar on the left-hand side of the screen, and the speed/accuracy of the algorithm and the relative frequency (if other than 440Hz, for orchestra tuning) can be adjusted via the menu.
There is no "dead zone" with DaTuner; instead, the whole display turns green when the incoming frequency is within a configurable range of the target frequency and you can still see small changes in pitch even within the "in-range" area. There is no transposition menu, but it is possible in DaTuner. See http://www.applaudapps.net/?p=91">the blog for details.
Known Bugs & Feature Requests:
- Doesn't detect any notes
Use the sensitivity adjustment on the left side of the screen. Ensure that the signal rises above the little yellow bar - the algorithm doesn't run until this level is exceeded.
- Memory Leak Crashes
Rotating the screen too many times may crash the app due to memory leaks. This is a common problem in Android applications which DaTuner also suffers from. I will fix this ASAP.
- Other Crashes
Everything I release works on my X10 Mini Pro, but as it is my only phone, I can't really verify the releases on all phones/versions of Android before releasing. I try not to program bugs, but sometimes can't help myself. If you find one, let me know which symptoms it has so I can try to fix it ASAP. Enabling your devices data access and allowing the app to crash will at least provide me with a bug report. If you continue to have problems, you can download an old version of DaTuner from the following link:
- Low responsiveness / Lag
If you experience lag, try reducing the "Averaging Time" setting in the configuration. The averaging algorithm is weighted so recent analyses have more impact, so even with higher averaging times, responsiveness should be decent. I do find that the note display is still stable even if this value is adjusted all the way down to 600ms, especially if the "precision factor" is also adjusted to 1.