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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 • 1:45pm - 2:45pm
Poster 5: Measurement of industrial noise using a smartphone-based sound level measurement application

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Co-Presenters/Co-Authors:
Chucri Kardous, NIOSH
Liangliang Zhao, Jiangsu CDC, China
Yufei Liu, 3M China Ltd.

This study expands on previous studies examining the use of a smartphone-based sound level meter application (NIOSH SLM) to measure occupational noise exposures in industrial settings. The study was a collaboration of efforts by researchers from the Jiangsu Provincial Center for Disease Control and Prevention (JSCDC), 3M China Ltd., and the National Institute for Occupational Safety and Health (NIOSH). An initial evaluation was conducted in a sound-treated booth and followed by a field evaluation in two industrial facilities. Six different iOS smart devices were used with two types of external microphones to measure sound levels. Average sound levels measured by the NIOSH SLM app were compared with a reference (Class/Type 1) sound level meter. Results show that the average sound levels were within ± 2 dBA of the reference instrument -- both in the lab and the field -- when the microphones were calibrated using acoustical calibrators. Several factors influenced the accuracy and performance of the app including the type of smart device, how it was used/held, and the type of noise being measured. Additional field studies across various noise environments and for different occupations will be helpful to demonstrate whether smartphone-based exposure measurements can be widely adopted.

Speakers
avatar for Wei Gong

Wei Gong

NIOSH
Wei Gong CDC/NIOSH, Cincinnati OH, MS, CIH Wei Gong has 15+ years industrial hygiene experience. Prior to joining CDC/NIOSH, she was a deputy branch chief of Jiangsu Provincial Center for Disease Control and Prevention in China. She achieved a master’s degree in toxicology at Nanjing... Read More →


Saturday February 27, 2021 1:45pm - 2:45pm CST
Virtually