SonoPASS

Noise Reduction measurement system

SonoPass^® is Sonomax's proprietary computer-generated proof-of performance software. While the SonoPass^® indi­vidual fit validation system was designed to test SonoCus­tom^® earpieces, it has now been enhanced to test other hear­ing protection products as well. The SonoPassTM is the only system that scientifically validates the exact percentage of pro­tection that an individual is receiving. Sonomax believes that this innovative technology will pave the way towards new workplace regulations in the US and around the world.

While hearing protection devices (HPD) have been the last line of defense against noise-induced hearing loss (NIHL) in the workplace, significant questions linger regarding their performance. HPDs in use today do not provide the level of protection that would be expected from their laboratory evalu­ations under ANSI S3.19-1974 or S12.6-1997(R2001) Method A or Method B. The level of protection provided to in­dividuals has proven difficult, if not impossible, to measure.

The SonoPass validation system measures noise reduction (simultaneous sound pressure levels inside and outside the HPD), and applies compensation factors derived from rigor­ous laboratory testing to provide personal attenuation equiva­lents, yielding an effective personal attenuation rating, or PAR, for individual users.

SonoPass Software provides:

• Certified individual field at­tenuation measurement in minutes
  
  
• Direct comparability with REAT "gold standard"
  
  
• Dual-element microphone measuring sound inside and outside the ear
  
  
• Validation for SonoCustoms and other specialized HPD devices
  
  
• Customized protection to optimized to noise levels in a given environment
  
  
• International standards
  
  
• Multi-lingual compatibility
  

Download
SonoPass specification sheet