Why is auditory frequency weighting so important in regulation of underwater noise? | Zendy

Jakob Tougaard | Zendy; Michael Dähne | Zendy

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Why is auditory frequency weighting so important in regulation of underwater noise?

Author(s) -

Jakob Tougaard,

Michael Dähne

Publication year - 2017

Publication title -

the journal of the acoustical society of america

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.619

H-Index - 187

eISSN - 1520-8524

pISSN - 0001-4966

DOI - 10.1121/1.5008901

Subject(s) - weighting , audiogram , acoustics , noise (video) , a weighting , underwater , auditory fatigue , sound exposure , computer science , speech recognition , mathematics , audiology , noise exposure , sound (geography) , physics , geology , hearing loss , artificial intelligence , medicine , oceanography , image (mathematics)

A key question related to regulating noise from pile driving, air guns, and sonars is how to take into account the hearing abilities of different animals by means of auditory frequency weighting. Recordings of pile driving sounds, both in the presence and absence of a bubble curtain, were evaluated against recent thresholds for temporary threshold shift (TTS) for harbor porpoises by means of four different weighting functions. The assessed effectivity, expressed as time until TTS, depended strongly on choice of weighting function: 2 orders of magnitude larger for an audiogram-weighted TTS criterion relative to an unweighted criterion, highlighting the importance of selecting the right frequency weighting.

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