Antenna - Television receiver
Inaudible
The invention further relates to the art of inaudible communication, whereby the information contained in the signals is secure and undetectable by radio frequency monitoring.
su·per·im·pose
(so͞o′pər-ĭm-pōz′)
tr.v. su·per·im·posed,
su·per·im·pos·ing,
su·per·im·pos·es
1. To lay or place (something) on or over something else.
2. To add as a distinct feature, element, or quality: superimposed her own interpretation when she retold the story.
I know
Richard Svanberg