Wilson Ihrig is a noise, vibration and acoustical consulting firm with offices in California (San Francisco Bay Area and Los Angeles), Washington and New York. A certified Small Business (SBE), we have been offering professional consulting services on a wide range of acoustical and vibration issues since 1966. We work on a wide array of projects including architectural, transportation (especially rail transit), environmental, construction, structural vibration, and building vibration isolation. We currently employ a staff of 24, which includes highly-trained and experienced professional specialists in acoustics and vibration. We are fully equipped to perform all types of acoustical and vibration measurements.