Priming

Ensure that the proper feedback frequencies can be better guess, this app helps by fast and predefined frequency selection and the acoustic output on a smartphone from them.

Moreover, to dispense with the 21 pre-defined fixed frequencies in the piano format and the frequency range by slider or manual input of 9 Hz - 22,000 Hz preset and output acoustically.

Functions:
- Piano keys , with 21 fixed preset frequencies in Hz (100, 125, 160 , 200, 250 , 315, 400 , 500, 630 , 800, 1k, 1.25k , 1.6k , 2k, 2.5k , 3.15k , 4k , 5k 6.3K 8k and 10k)
- Acoustic rendering with continuous mode or as long as a piano key or the slider is touched
- Volume setting
- No lock screen mode & screen saver mode
- Frequency Slider for convenient tuning between the 21 frequencies
- Manual keys for frequency change with single touch or touch continuous mode