Phonon is a boson type particle, also like the claimed Higgs particle is. Phonon is also a quantum analogous to acoustic vibrational wave, and is a carrier to heat conductivity.
We can produce phonons with two different ways, first by electrostriction with applied HV field around crystalline material,like ferrite or other quartz or crystalline type material.Also we can have coherent phonon radiation ( maser ) with electrostriction system.
Other way to produce phonons is by electron spin flips, phonon emission occurs when we first collect energy to electrons spin in a increasing magnetic field and then release this spin energy by sharp cutoff for the pulse. After relaxation time electron spins are releasing their energy by spin flip ( spin up / spin down ) and during spin flip the energy is emitted in a form of phonon with a frequency equal to electron spin precession rate.Disadvatage with this system is that it is not easy to produce coherent phonon radiation,because of the different phases of the electrons spin.

I think that electrostriction system is in use with Testatika machine, when dielectrics material that contains crystal particles are stressed with electrostriction in a "pod" and are producing phonons.
Phonons have a wave structure, and when we use prime number of waves, we can have a cylindrical resultant nested field structure around the device in  a form of phonons.

http://en.wikipedia.org/wiki/Phonon

Regards,

Esa