"(of an emission apparatus): the range between highest and lowest frequencies emissable, see sound spectrum. Preferabel to range, because of the latter's use in the topographic sense." 
"(of a receptor): the range of frequencies receivable, from the highest to the lowest." 
- . Glossarial Index. Acoustic Behavior of Animals. Acoustic Behavior of Animals. Elsevier; 1963.
There is currently no content classified with this term.