Audio Tone Generator

This application is a generator of Sine Wave Sound Frequency Tone.
Test frequencies High, Mid and Low bass tones!

[function]
Set custom frequency from 30Hz to 3500Hz.
Automated looping stepped decrease and increase tone.
Generate random frequencies function.
Time to Start function.(You can use for a Clock Timer and Alarm.)
Time to Stop function.
Elapse time counter.
Displaying the remaining time.
Estimate of the remaining time by progress bar and percentage.
Displaying the start time.
Displaying the stop time.
Save input text value and retrieve same value.

[Instructions]
To change the frequency by 1 Hz drag the slider or input number.
Please input frequency 30 to 3500 and click START.
Please input frequency when you turn on Auto Step.
Please input duration more than 100 Msec.

[Attention]
Please refrain from long time use and the use at the megavolume.
Please refrain from an earphone, the use by headphones.
Please stop use as soon as you felt the adverse effects including the headache.
This application is not a thing to guarantee an effect.

Please give me feedback for improve this application.

[History]
Version 1.5
Elapse time counter.
Displaying the remaining time.
Estimate of the remaining time by progress bar and percentage.
Displaying the start time.

Version 1.4
Add Time to Start function.
Add Time to Stop function.