I'm assuming you're referring to a research paper on "SONE 414," which doesn't provide much context on its own. However, I can try to provide some general information and potential leads.
When shopping online or reading building plans, you will encounter the "Sone 414" marking on these five product categories: sone 414
Meta Description: What is Sone 414? A complete breakdown of this critical acoustic measurement for HVAC fans, range hoods, and exhaust systems. Compare sone levels, conversion to dB, and product selection tips. I'm assuming you're referring to a research paper
The Home Ventilating Institute (HVI) certifies sone ratings. A genuine HVI label will never show 414 sones for a residential product. and exhaust systems. Compare sone levels