ASHRAE PMP Acoustical Testing

ASHRAE PMP Acoustical Testing

Setting benchmarks and measuring building performance is vital to designing successful “green” or high efficiency buildings. ASHRAE developed a set of Performance Measurement Protocols (PMP) to provide consistent test methods for the industry to measure energy, water, and indoor environmental quality performance of commercial buildings. The indoor environmental quality section includes acoustical measurements to assess things like background noise levels, speech privacy, reverberation, and sound isolation depending on the building usage. ASHRAE is working on evaluating and updating the PMP guidelines. As part of the process they commissioned a full series of measurements per the current PMP for a number of buildings. Wave Engineering performed acoustical testing for a LEED Platinum building, the Iowa Energy Center IUB/OCA building, in Des Moines, Iowa. The acoustical measurements in the PMP are divided into three groups: Basic, Intermediate, and Advanced. The Basic sound testing involves an occupant survey on acoustics and measurements of the background noise level in A-weighted decibels (dBA), which the client performed themselves. Wave Engineering was enlisted to conduct the Intermediate and Advanced measurements, which require more advanced instrumentation and expertise. The Intermediate level sound testing was performed in several rooms. These tests evaluate the most common sources of annoyance that affect work performance and interfere with communication: background noise and reverberation. Background noise from the HVAC system was measured and reported in octave band levels, dBA, dBC, Noise Criteria (NC), and Room Criteria (RC Mark II). Reverberation Time (T60) was measured in each room and reported in octave and 1/3-octave bands. The Advanced level testing was conducted primarily in a Hearing Room used by the Iowa Utilities Board....
PRODUCT HIGHLIGHT: Acoustic Plasters

PRODUCT HIGHLIGHT: Acoustic Plasters

We are featuring Acoustic Plasters as part of our continuing series of product highlights. Acoustic Plasters Acoustic plasters are troweled-on acoustic treatments that absorb sound, control reverberation, and reduce noise. They can be used in both exterior and interior applications.  Plaster can be applied in different colors a variety of textures (degrees of smoothness).  There is even an acoustically transparent shimmer effect that can sprayed directly onto the completed installation. This is a higher-end, more expensive treatment that must be applied by a certified installer. Photo by...
PRODUCT HIGHLIGHT: Acoustic Stretch Fabric Systems for Room Absorption

PRODUCT HIGHLIGHT: Acoustic Stretch Fabric Systems for Room Absorption

We like to stay on top of new products and innovations and thought it would be a good idea to feature some of them on our blog. Following is the first in our series of product highlights. Acoustic Stretch Systems Acoustic stretch systems are fabric or micro-perforated vinyl membranes stretched over plastic or metal frames with sound absorbing or sound blocking material behind. These treatments can cover larger areas with fewer seams than acoustic panels. Custom options can accommodate irregular shaped rooms, including curved walls and domes. Stretch systems can be an economical way to produce an updated look by covering existing treatments without removing them. Systems can be designed with the sound absorbing material only where needed. The fabric can conceal loudspeakers or hard reflective surfaces so that they are seamlessly integrated with the sound absorbing treatments. Acoustic stretch systems can accommodate a variety of fabrics to provide many different looks. Some vinyl membranes can be screen-printed and some can be backlit. Panels can be fabricated in geometric shapes, waves and other...
Wave Engineering Celebrates 4 Years in Business!

Wave Engineering Celebrates 4 Years in Business!

Wave Engineering is Turning 4! We have come a long way since we got our start with Jeff and Carmen working away in the spare bedroom. Racks of acoustic test equipment prominently displayed in the dining room made for an interesting Thanksgiving dinner. The past 4 years have seen the addition of two top-notch consultants, Andrew and Ben, and the acquisition of spacious offices in Littleton. Carmen enjoyed furnishing them with some funky vintage finds and particularly applauded the building of the storage room. As a team we have worked on over 240 projects in 17 states. We have helped clients with their acoustics, noise and vibration needs on a wide variety of projects, including schools, health care facilities, industrial plants, performance venues, fitness studios, residences, restaurants, shooting ranges and worship spaces. We thank you for your support over the past 4 years and look forward to many...