HDR resonance

I believe that to attain its effect, the HDR uses resonance. This is similar to a tuning fork that creates a noise. When you hit the metal it begins to vibrate and this makes waves. These sound waves are are in many ways similar to time waves. Notice that the first device was called a sonic resonator and it was close to an HDR, but was missing a few components, but was close to being the same. Well, now you know why it was called the sonic. Basic principle of time appears to be resonance.