The hypersonic sound system was kind of productized years ago as the "Sound Lazer" among other things. The effect is really quite stunning! It is a truly strang

The hypersonic sound system was kind of productized years ago as the "Sound Lazer" among other things. The effect is really quite stunning! It is a truly strange effect. But, as the manufacturer themselves state, it involves pointing an array of 120dB ultrasonic emitters running at full blast, even when it is transmitting silence. It's an oppressive feeling to be in a 'loud' room, yet not be able to hear anything.