Sone-191 !link!

The most frequent application of "sone" identifiers is in the HVAC (Heating, Ventilation, and Air Conditioning) industry. Equipment bearing a SONE-191 specification usually relates to:

), which measure physical sound pressure level on a logarithmic scale, the sone scale is linear and designed to reflect how the human ear actually experiences volume. SONE-191

: If it's a news article or editorial piece, searching online through news aggregators or the specific publication's website might yield more details. The most frequent application of "sone" identifiers is

Use this if you need a standard "header" or introductory paragraph for a report or file. Reference: SONE-191 Description: SONE-191