AIRCRAFT NOISE ASSESSMENT, ARCHITECTURAL ACOUSTICS, COMMUNITY NOISE SURVEYS, ENVIRONMENTAL IMPACT STATEMENTS, EXPERT WITNESS, FIELD TESTING, HEARING CONSERVATION SERVICE, INDUSTRIAL NOISE CONTROL, MECHANICAL SYSTEM AND HVAC, OPEN-PLAN OFFICE ACOUSTIC AL DESIGN, PRODUCT NOISE CONTROL, TRANSPORTATION NOISE CONTROL, VIBRATION ANALYSIS AND CONTROL, THEATER AND CONCERT HALLS