[Arny Krueger]

"ST" wrote in message


According to a HIgh End magazine when setting up
loudspeaker or tuning the room it is advisable to use
C-Weighting measurement in the SPL.

C-weighting is almost no weighting. It's pretty much flat response.

http://en.wikipedia.org/wiki/File:Ac...ing_curves.svg

If my reading of
weighting is correct A-weighting reflects perceived sound
more accurately.

How sound is perceived depends greatly on the SPL.

A-weighting is an approximation of the inverse of the Fletcher-Munson curves
for low SPLs.

Sound mixing engineers usually do mixing based on hearing

Absolutely.

and I doubt they use SPL to see how loud the bass should
be and etc..etc.

Any mixing effort, whether for recording or for live sound is implicity
relevant to some preferred SPL level.

If you mix and equalize for 60 dB SPL you will have a vastly different mix
than if you mix for 100 dB SPL.

The usual modern convention for mixing would be based on some presumed SPL
for listening. Much modern thought is contained in the following.

http://www.aes.org/technical/documen...s.cfm?docID=65