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ANSI‐1969 Standard Reference Threshold Sound‐Pressure ...
https://asa.scitation.org/doi/10.1121/1.1912498
New standard reference threshold sound‐pressure levels for four audiometric earphones are given in Appendix F of ANS “Specification for Audiometers” S3.6 (1969) effective 1 September 1970. The change in reference level from ASA (1951) to ANSI (1969) is shown to be different for each earphone type. The sources of data for these new reference levels and the …
Measurement of background noise levels for audiograms ...
https://www.osha.gov/laws-regs/standardinterpretations/2021-04-28
An exhaustive calibration shall be performed at least every two years in accordance with ANSI S3.6-1969; and, Audiometric tests shall be performed by a licensed or certified audiologist, otolaryngologist, or other physician, or by a technician who is certified by the Council for Accreditation in Occupational Hearing Conservation.
ANSI-1969 Standard Reference Threshold Sound-Pressure ...
https://pubs.asha.org/doi/10.1044/jshr.1503.665
" ANSI-1969 Standard Reference Threshold Sound-Pressure Levels for Audiometers: Some Comments1." Journal of Speech and Hearing Research , 15(3), pp. 665–666 Additional Resources
The Quest for Audiometric Zero | The Hearing Review – a ...
https://hearingreview.com/resource-center/expert-insight/quest-audiometric-zero
The ANSI-69 Standard. The latest version of this standard, S3.6 2018, retains essentially the same threshold SPL values as the 1969 version. It is identical to the latest ISO standard, assuring international standardization of audiometer calibration. Conclusion Well, that is the complicated story of the quest for audiometric zero.
Hearing Conservation - Occupational Safety and …
https://www.osha.gov/sites/default/files/publications/osha3074.pdf
the audiometric program determines that the employee’s STS is persistent. The employer must retain the original baseline audiogram, however, for the length of the employee’s ... (ANSI) specifications of SC-1969. 6 When is an employer required to provide hearing protectors? Employers must provide hearing protectors to all
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