Online Tone Generator and frequency list
find frequency in the list and open four tone generators add first number in generator 1 and then for each other tone generator you want to divide the number by 11, if it number goes bellow zero use multiply by 11 instead of divide, some people would say use 3 generators and divide by 7 to square the circle but i use 4 and 11 its more natural 
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Instructions
To play a constant tone, click PLAY or press Space.
To change the frequency, drag the slider or press ← → (arrow keys). To adjust the frequency by 1 Hz, use the buttons or press Shift + ← and Shift + →. To adjust the frequency by 0.01 Hz, press Ctrl + ← and Ctrl + →; to adjust it by 0.001 Hz, press Ctrl + Shift + ← and Ctrl + Shift+ → To halve/double the frequency (go down/up one octave), click ×½ and ×2.
To change the wave type from a sine wave (pure tone) to a square/triangle/sawtooth wave, click the button.
You can mix tones by opening the Online Tone Generator in several browser tabs.
What can I use this tone generator for?
Tuning instruments, science experiments (what’s the resonant frequency of this wineglass?), testing audio equipment (how low does my subwoofer go?), testing your hearing (what’s the highest frequency you can hear? are there frequencies you can hear in only one ear?).
Tinnitus frequency matching. If you have pure-tone tinnitus, this online frequency generator can help you determine its frequency. Knowing your tinnitus frequency can enable you to better target masking sounds and frequency discrimination training. When you find a frequency that seems to match your tinnitus, make sure you check frequencies one octave higher (frequency × 2) and one octave lower (frequency × ½), as it is easy to confuse tones that are one octave apart.
Alzheimer’s disease. There is some early-stage scientific evidence that listening to a 40 Hz tone can reverse some of the molecular changes in the brains of Alzheimer’s patients. This is one of these things that sound too good to be true, but early results are very promising. Here’s a summary of the research so far and a report from a user who tried 40 Hz therapy on his wife. (Note that this tone generator is not a medical device – I don’t guarantee anything!)
Bio-Energetic Frequency Chart I
[Editor's Note 1: This is one of many possible frequency lists that can be used with the NCH Tone Generator. How you get these waves into the body makes a difference as to how well they will work. The NCH Tone Generator is using the speakers or headphones plugged into your computer and you are listening to audio waves. Audio waves aren't as effective as plasma or radio frequency radiations, but they do work. Combining this sound therapy with light therapy will enhance its performance. The volume of the tones do not have to be loud; just enough to hear it. The number(s) you see next to the condition is the frequency number you should set on the generator. Just place our cursor over the numbers shown on the NCH Generator and type in new ones
Editor's Note 2: If you have your own Function (frequency) Generator which offers sine, square wave, and triangle wave forms, plus DC offset [most generators have thse basic features], you will likely obtain the most benefit by using a square wave with 100% positive DC offset (based on Dr Hulda Clark's definitive research). If you can vary the Duty Cycle on your generator, you can try using a very narrow pulse of 10% duty cycle up to a maximum of 50% duty cycle. Usually, a function generator will output a voltage of at least 10 volts p-p (peak to peak) which is more than enough for body zapping.
Bio-Energetic Frequency Chart II
