Glossary of Terms
 
  range  
  1) An interval of musical notes, as in note range.
2) A specific section of a musical keyboard, based on notes or keys.
3) A span of frequencies output by an electronic or acoustic device.
4) The frequencies that an audio input device (such as a microphone) will respond to or is capable of recording.
 
  Source: Yamaha  

Also refered as:
  frequency range   frequency response
Related terms:
  interval   key   noise floor   note   transpose