See the title. This would be analogous to "ultraviolet" and "infrared" for color.
Sonic describes sounds. So you would use Ultra or Infra combined with Sonic.
of or involving sound waves with a frequency above the upper limit of human hearing.
relating to or denoting sound waves with a frequency below the lower limit of human audibility.
Both definitions come from the Oxford Dictionary of English.
You probably mean ultrasound:
- (General Physics) ultrasonic waves at frequencies above the audible range (above about 20 kHz), used in cleaning metallic parts, echo sounding, medical diagnosis and therapy, etc.