Chapter HAS 4

HAS 4.01   Appropriate procedures for measurement of human hearing.

HAS 4.02   Ear molds.

HAS 4.03   Equipment used to measure hearing.

HAS 4.04   Appropriate time frame for hearing tests prior to fitting hearing instruments.

Ch. HAS 4 Note Note: Chapter Had 4 was renumbered Chapter HAS 4 under s. 13.93 (2m) (b) 1, Stats., Register, April, 1992, No. 436.

HAS 4.01 HAS 4.01 Appropriate procedures for measurement of human hearing. The procedures accepted by the board for the measurement of human hearing by licensees and trainees comprise:

HAS 4.01(1) (1) Pure tone audiometry, including air conduction testing and bone conduction testing.

HAS 4.01(2) (2) Speech audiometry by live voice, or recorded voice, including speech reception threshold, speech discrimination testing, and most comfortable loudness measurements and loudness discomfort levels.

HAS 4.01(3) (3) Appropriate masking when indicated.

HAS 4.01(4) (4) Recording and interpretation of audiograms and speech audiometry to determine proper selection and adaptation of hearing instruments.

HAS 4.01 History History: Cr. Register, March, 1975, No. 231, eff. 4-1-75; am. (2) and (4), Register, July, 1992, No. 439, eff. 8-1-92.

HAS 4.02 HAS 4.02 Ear molds. Taking impressions for ear molds includes:

HAS 4.02(1) (1) Otoscopic observation, pre- and post- impression.

HAS 4.02(2) (2) Proper cotton or foam block placement.

HAS 4.02(3) (3) Impression material insertion.

HAS 4.02(4) (4) Removal of completed impression.

HAS 4.02(5) (5) Proper ear mold selection.

HAS 4.02 History History: Cr. Register, March, 1975, No. 231, eff. 4-1-75; am. (2), cr. (5), Register, July, 1992, No. 439, eff. 8-1-92; am. (2), Register, July, 1993, No. 451, eff. 8-1-93; am. (1) and (5), Register, July, 1998, No. 511, eff. 8-1-98.

HAS 4.03 HAS 4.03 Equipment used to measure hearing.

HAS 4.03(1) (1) Pure tone audiometry must be conducted with a pure tone audiometer which conforms to the American National Standards Institute, Standard ANSI S3.6 2018 approved September 20, 2018. Such audiometer shall be capable of generating a minimum of 9 discrete frequencies, ranging from 250 Hz through 8 KHz (250, 500, 750, 1000, 1500, 2000, 3000, 4000, 6000, 8000 Hz). Output levels over the frequency range shall conform to standard ANSI S3.6 specified above.

HAS 4.03 Note Note: A copy of Standard ANSI S3.6 may be obtained from the American National Standards Institute website at www.ANSI.org. A copy of the Standard is on file at the Legislative Reference Bureau.

HAS 4.03(2) (2) A masking source shall be either available within, or capable of being attached to, the audiometer. The masking source shall have one of the following:

HAS 4.03(2)(a) (a) White noise capability.

HAS 4.03(2)(b) (b) Speech noise capability.

HAS 4.03(2)(c) (c) Narrow band noise and white noise or narrow band noise and speech noise capability.

HAS 4.03(3) (3) Audiometric equipment used in the evaluation of hearing sensitivity for the fitting and sale of hearing instruments shall be calibrated not less than once every 12 months.

HAS 4.03 History History: Cr. Register, March, 1975, No. 231, eff. 4-1-75; am. Register, July, 1992, No. 439, eff. 8-1-92; am. Register, July, 1993, No. 451, eff. 8-1-93; renum. HAS 4.03 to be 4.03 (1), cr. (2) and (3), Register, July, 1997, No. 499, eff. 8-1-97; am. (1), Register, July, 1998, No. 511, eff. 8-1-98; CR 22-059: am. (1) Register March 2024 No. 819, eff. 4-1-24.

HAS 4.04 HAS 4.04 Appropriate time frame for hearing tests prior to fitting hearing instruments. Appropriate procedures for the measurement of human hearing as described in s. HAS 4.01 shall be performed and documented within 6 months prior to the selling and fitting of a hearing instrument.

HAS 4.04 History History: Cr. Register, June, 1977, No. 258, eff. 7-1-77; corrections made under s. 13.93 (2m) (b) 1., Stats., Register, April, 1992, No. 436; am. Register, July, 1992, No. 439, eff. 8-1-92; am., Register, July, 1998, No. 511, eff. 8-1-98.