Ultrasonics Through TV?

[Guero]

I have seen people successfully use TVs to play ultrasonics through a PlayStation, for example, but the speakers must be capable of a minimum of 20 kHz frequency response. Otherwise, you can just use the masked version.

Yea i play the ultrasonic while I watch my nightly show plays at the same time through my laptop. Then I get at least 8 hours in of the masked versions through my ear buds while I sleep