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Ambient noise levels in audiometric test rooms used for ...
https://pubmed.ncbi.nlm.nih.gov/8307246/#:~:text=Recently%2C%20the%20American%20National%20Standards%20Institute%20%28ANSI%29%20has,frequency%20ranges%20%28125-8000%20Hz%2C%20250-8000%20Hz%2C%20500-8000%20Hz%29.
Ambient noise levels in audiometric test rooms used for ...
https://pubmed.ncbi.nlm.nih.gov/8307246/
Abstract. Recently, the American National Standards Institute (ANSI) has specified (ANSI S3.1-1991) maximum permissible ambient noise levels (MPANLs) allowed in an audiometric test room that would produce negligible masking of pure tones presented down to O-dB HL for two test conditions (ears covered, ears not covered) and three test frequency ranges (125-8000 Hz, …
Ambient noise levels in industrial audiometric test rooms
https://pubmed.ncbi.nlm.nih.gov/8209846/
However, ambient noise sound pressure levels (SPLs) in rooms used for industrial hearing tests are unknown. The present study reports octave band (125 to 8000 Hz) ambient noise SPLs measured in 490 single-walled prefabricated audiometric test rooms located in industrial settings that were obtained from eight sources. The ambient noise SPLs were highest in the lower …
Ambient Noise Levels in Mobile Audiometric Testing Facilities
https://journals.sagepub.com/doi/pdf/10.1177/216507999904700404
noise level of the SLM was measured by placing a capac itor and a shielded adaptor across the input to simulate the normal 1 in. microphone as recommended by ANSI (1991). Because measured ambient noise levels were at least 5 dB above the internal noise of the SLM, the inter nal noise of the SLM was essentially insignificant with
Maximum Permissible Ambient Noise Levels for …
https://www.semanticscholar.org/paper/Maximum-Permissible-Ambient-Noise-Levels-for-Test-Frank-Durrant/e978727ab01f918afcb2e3afe045454e8c92d282
Maximum Permissible Ambient Noise Levels for Audiometric Test Rooms. This Standard specifies maximum permissible ambient noise levels (MPANLs) allowed in an audiometric test room that produce negligible masking ( 2 dB) of test signals presented at reference equivalent threshold levels specified in ANSI S3.6-1996 American National Standard …
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