scalar must be better understood, it is like this.. put two speakers face to face, play identical frequencies & adjust the distance between the two so the frequencies cancel each other out.

basically ANC active noise control, noise cancelation is scalar technology.

the harmonic feedback from a guitar, amplifier & delay or reverb pedal with even more enhanced reverberation.

multiples energy output.

piezoelectric is both a I/0 input & output, both sa speaker & microphone, also converts soundwaves into electricity.

ANC scalar are silent, therefore wireless is scalar.