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Date:            Tuesday, May 18, 2010 at 7:00 pm

 

Speaker:      John LoVerde & Wayland Dong, Veneklasen Associates, Santa Monica, CA

 

Topic:           Acoustical Analysis of Floor/Ceiling Assemblies in Multi-Family Dwellings

 

Impact noise insulation is currently described by single-number metrics (e.g., IIC), which were historically developed analogously to metrics for airborne noise isolation (e.g., STC) to evaluate the acoustical performance of floor/ceiling systems.  Unlike airborne noise, however, research indicates that impact noise is characterized by a minimum of two frequency domains, and that analysis of both domains is required to properly assess assembly performance.  The levels in these two domains vary independently with assembly design.  Therefore, it is not possible to characterize the impact insulation of an arbitrary assembly with a single-number metric.  This paper proposes a two-dimensional methodology to assess and evaluate impact insulation using a single impact source, summarizes the 20 years of research that led to this methodology, and gives some examples of its practice and implementation.

 

John LoVerde is known throughout the country for his work as an acoustical consultant, as well as his leadership in testing, research, and reporting methodology, particularly in the field of residential acoustics.  He is currently an Associate Principal at Veneklasen Associates, where he has been employed since 1989.  John has a B.S. in Mechanical Engineering from Cal Poly Pomona, a M.S. in Acoustics from UCLA, and has authored over 30 technical papers and presentations.  Wayland Dong is a Senior Associate at Veneklasen Associates, which he joined in 1998 shortly after obtaining a B.S. in Physics from UCLA.  Over the past 10 years, John and Wayland have collaboratively researched, presented, and authored papers on a range of acoustical subjects, including impact and airborne noise isolation in multifamily structures and statistical variations in acoustical testing.

 

 

Time:         7:00-7:30 pm           Coffee and Refreshments

                  7:30-8:30 pm           Meeting

                  8:30-9:00 pm           Coffee and Discussion

 

Place:        Veterans Administration Medical Center, Room 6400 (6th floor)

                  Wilshire and Sawtelle Boulevards (near 405 freeway)

                  Parking in front of Medical Center