mr. salter's office and i will point out a few issues about that report. it is a good analysis, however it's a fairly narrow in its scope in that it looks primarily at sources of noise which are speech. so, it assumes a typical office, cubicle, open plan type operation with people basically speaking no more than that. so, however, it does not include sources with music or sound effects which are very common in offices, also with offices with young people, dot-coms and so on in the soma area. and, for instance, issues like audiovisual material, training videos product demonstration videos, parties, care yoke i parties that could take place at the end of the day. also the level of speech assumed 72 decibel is okay for a typical office use, but there are special conditions such as the public address system ~ like the case in retail or commercial uses or special events like broadcasting of ball games by television, things like that. so, i don't know if you have a couple second for the last point very brief. it also under estimates the potential audibility of t