Hi Kijanki,
Yes, as I indicated the 6 db of falloff per doubling of distance applies if the effects of room reflections are put aside, i.e., if they are not included.
I've seen a number of references over the years indicating that "room gain" typically adds something like 3 db or so to the SPL that is heard at typical distances in typical rooms, for non-planar non-line source speakers. Obviously that number will vary somewhat depending on the room, its acoustic characteristics, the dispersion characteristics of the speaker at various frequencies, and other variables.
Best regards,
-- Al
Al, yes but doesn't it apply to open space or anechoic chamber only?
Yes, as I indicated the 6 db of falloff per doubling of distance applies if the effects of room reflections are put aside, i.e., if they are not included.
I hear pretty much constant loudness walking in my room. What do you think?
I've seen a number of references over the years indicating that "room gain" typically adds something like 3 db or so to the SPL that is heard at typical distances in typical rooms, for non-planar non-line source speakers. Obviously that number will vary somewhat depending on the room, its acoustic characteristics, the dispersion characteristics of the speaker at various frequencies, and other variables.
Best regards,
-- Al