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NHCA 2021 Virtual Conference has ended
Welcome to the 2021 NHCA Virtual Conference Schedule, below you will find the schedule listed with 3 types of education sessions, Live Platform, Pre-recorded Platform and E-Poster Sessions. They will all be delivered a little differently so please take a little time to read the descriptions and understand how the conference will be laid out.

  • Live Platforms: NHCA is offering 7 live sessions with interactive Q&A and chat features over the two days of the live conference. If you are not able to watch these sessions live they will be recorded and playback will be available until March 19, 2021
  • ON DEMAND Pre-Recorded Platforms: There will be 28 pre-recorded sessions that will be released on the first day of the conference, these will be available to watch at your leisure and will be available until March 19, 2021. PLEASE NOTE: They are available longer than the 1-5 pm time on the schedule but we are not able to program them in like that!
  • ON DEMAND E-Poster Sessions: There will be 8 E-Poster sessions available to watch, each session is 15 minutes long and worth a quarter of a credit, in order to receive a full hour you will need to watch 4 poster sessions all the way through and complete and evaluation. These will be available as pre-recordings and will be available from the start of the conference until March 19, 2021
This means you have the opportunity for up to 19.0 CE credits at this years conference! (See ASHA AND AAA Brand Blocks below)

If you are trying to login to the learning center to attend the conference, please CLICK HERE to go to the Learning Center, this is just a digital agenda!
Back To Schedule
Saturday, February 27 • 2:00pm - 2:30pm
ON DEMAND SESSION: Hearing protectors fit-testint: preliminary results of earmuff instrumentation on manikin

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Co-Presenters/Co-Authors:
Chahinez Hocine, CRITIAS
Jeremie Voix, CRITIAS
Oliver Doutres
Frank Sgard, IRSST

The number of workers with hearing loss keeps increasing even though they are often equipped with hearing protection devices like earplugs or earmuffs. This could be due to one or both of the following main reasons: poor fitting or discontinuous wearing of the hearing protection devices (HPDs). Instrumenting HPDs with microphones may be an efficient way to assess their effective attenuation, encourage better use and overall improve their efficiency to protect workers against the risk of Noise-Induced Hearing Loss. This project aims specifically to develop a microphone-based sensing technology, inspired by a technology initially developed for earplugs, enabling earmuff fit-test as well as continuous measurement of workers’ real-time noise exposure. The methodology of the proposed research project relies on the development of finite ele-ment models validated by experimental measurements on human subjects to optimally position the least number of microphones on the instrumented earmuffs. Preliminary results obtained on Acoustical Test Fixtures (manikin) are presented and challenges for field tests on human subjects are discussed.

Learning Objectives:
As a result of this Continuing Education Activity, readers will be able to:
1) Assess advantages and limitations of using earmuffs for preventing noise-induced hearing loss (NIHL).
2) Discuss the potential benefits of using instrumented earmuffs to prevent NIHL.
3) Discuss the potential benefits of finite element modeling of earmuffs microphone instrumentation.

Speakers
avatar for Arthur Colombier

Arthur Colombier

École de Technologie Supérieure
From the beginning of his higher education, Arthur joined an engineering school, INSA Lyon (National Institute of Applied Sciences of Lyon) with the idea of entering the Mechanical Engineering department. Indeed, the latter offers its final year students the possibility of doing a... Read More →


Saturday February 27, 2021 2:00pm - 2:30pm CST
Virtually