CFR > Title 21 - Food and Drugs > CHAPTER I—FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES > SUBCHAPTER H—MEDICAL DEVICES (parts 800 to 898) > PART 874—EAR, NOSE, AND THROAT DEVICES > SUBPART B—Diagnostic Devices (§874.1050 to §874.1925) > 874.1120—Electronic noise generator for audiometric testing.

874.1120—Electronic noise generator for audiometric testing.

(a) Identification. An electronic noise generator for audiometric testing is a device that consists of a swept frequency generator, an amplifier, and an earphone. It is intended to introduce a masking noise into the non-test ear during an audiometric evaluation. The device minimizes the non-test ear's sensing of test tones and signals being generated for the ear being tested.
(b) Classification. Class II.