| (a) Audiometers and audiometric testing devices shall
meet the current standards of the American National Standards Institute
(ANSI) or the International Electrotechnical Commission.
(b) Audiometric testing not conducted in a stationary
acoustical enclosure.
(1) A notation shall be made on the hearing test if
testing was not done in a stationary acoustical enclosure. Sound-level
measurements must be conducted at the time of the testing to ensure
that ambient noise levels meet permissible standards for testing threshold
to 20 dB based on the most current ANSI "ear covered" octave band
criteria for Permissible Ambient Noise Levels During Audiometric Testing,
or the test environment shall have a maximum allowable ambient noise
level of 42 dBA.
(2) Ambient noise level of the location of the audiometric
testing, if not done in a stationary acoustical enclosure, shall include
a notation on the hearing test of the following items:
(A) type(s) of equipment used to determine ambient
noise level;
(B) model and serial number of equipment used to determine
ambient noise level;
(C) date of last calibration of equipment used to determine
ambient noise level; and
(D) the ambient noise level of the test environment.
(c) Audiometric testing conducted in a stationary acoustical
enclosure.
(1) A notation shall be made on the hearing test if
testing was done in a stationary acoustical enclosure.
(2) A stationary acoustical enclosure includes, but
is not limited to, an audiometric test room.
(A) An audiometric test room is any enclosed space
in which a listener is located for the purpose of testing hearing.
An audiometric test room may also be known as:
(i) an audiometric test area;
(ii) a hearing test space; or
(iii) a hearing test room.
(B) An example of an audiometric test room would be
a prefabricated room known as:
(i) an audiometric test booth;
(ii) a suite; or
(iii) a sound treated room.
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