The founder of Head Acoustics, Klaus Genuit, said that
“A soup might be delicious or not, but you can’t answer this by knowing the temperature of the soup. It is the same with restaurant soundscapes—you need a lot more information than just noise level.”
At the 177th Acoustical Society of America conference in May 2019 in Louisville, Kentucky, USA, Genuit will present an application of the standard ISO 12913-3, Acoustics — Soundscape, which is still under development.
The new standard requires the use of binaural recording equipment, which Head Acoustics happens to make and sell.
Read the conference abstract on the Acoustical Society America web site.