Project Experience

We’ve worked on a wide variety of projects, which are broken into categories below.

Please note that in many cases contract requirements demand that the identity of the client and other details not be publicly revealed.

Low-Noise Design and Product Sound Quality

  • Acoustical and energy efficiency analysis for large data servers
  • Sound quality recommendations for retail refrigeration equipment based on an international jury study
  • Custom sound quality metrics for personal computers
  • Sound Quality Program Development for a Large Consumer Product Manufacturer
  • Fan noise reduction for theatrical luminaries
  • Effect of gas discharge sound on Server HDDs
  • Experimental payloads for International Space Station: Fluids Integrated Rack (FIR), Combustion Integrated Rack (CIR), Plant Research Unit, Advanced Animal Habitat, FEANICS
  • Low-noise design for Fan-powered Devices
  • Low-noise design Fan-cooled Devices
  • Personal Computers
  • Servers
  • Routers
  • Switches
  • Remote computing workstations
  • Surgical Equipment
  • Medical Equipment
  • High-speed gas nozzles
  • Compressed-air powered motors
  • Mapping of Sound Transmission through Window by Sound Intensity Method

Acoustical Measurement Systems and Software

  • Trident Multichannel Realtime Analyzer (simultaneous 1/3-octave band, FFT, ISO 532B Loudness, calibrated WAV file recording, sound intensity)
  • Sound Quality Analyzer
  • Post-processing of sound quality parameters for environmental noise recordings (Sound Quality Processor)
  • 2-mic Impedance Tube software ASTM E1050
  • 4-mic Impedance Tube software ASTM E2611
  • Material Damping Measurement System (ASTM E756, SAE J1637)
  • REATMaster Hearing Protector Measurement Lab software
  • IPILA: Impulse Peak Insertion Loss Analyzer for Hearing Protectors ANSI S12.42
  • Steady-state Insertion Loss Analyzer for Hearing Protectors (using MLS)
  • TWA Calculator (NASA)
  • Pure Tone Analyzer (per ECMA 74)
  • Custom Measurement System with DUT control for active heat sink testing
  • Control system for ISO 10302 fan plenum
  • Environmental Noise Analyzer
  • Reverberation Analyzer
  • Control system for hemi-anechoic chamber qualification system
  • Paper Wrinkle Detector
  • Hard-Disk Drive Sound Power Measurement and Control System
  • Building Acoustics software (ASTM E90, ASTM C423)

Instruction in Acoustics and Noise Control

  • Fan Noise, Quiet by Design, Semi-Therm 30
  • Noise Emission and Control, Semi-Therm 30
  • Fan Noise Measurement and Prediction, onsite seminar for fan manufacturer
  • “Does my Product meet OSHA?”
  • Fan Noise, Thermal Design Seminar
  • Wind Turbine Noise, UT Austin
  • Basic Acoustics related to mine noise, NIOSH
  • Environmental Noise, industrial client
  • Fan Noise, industrial client
  • Low-Noise Design, industrial client
  • Fan Noise, NASA Glenn Research Center
  • Gas-Flow Design Guide Seminar, NASA Glenn Research Center
  • Low-Noise Design Seminar, NASA Glenn Research Center
  • Luncheon Keynote Speech, SAE NVH, 2005
  • Basic Acoustics, NASA Glenn Research Center
  • Acoustical Measurements, NASA Glenn Research Center
  • Low-Noise Design for Spaceflight Hardware, NASA contractor
  • Product Noise Control, Semi-Therm 2003
  • Auditory Demonstrations CD, NASA Glenn Research Center
  • Sound Absorption and Noise Control, commercial client
  • Engineering Noise Control, Industrial client
  • Noise Control and Low-Noise Product Design, Institute of Noise Control Engineering
  • ISS Payload Design Conference, NASA Glenn Research Center
  • Fundamentals of Noise Control and Low-Noise Product Design, NIOSH
  • Fundamentals of Noise Control and Low-Noise Product Design, Institute of Noise Control Engineering
  • Design for Low Noise Emission, NASA Glenn Research Center
  • Reducing Noise Emission from ISS Flight Hardware, NASA Glenn Research Center
  • Website Content for National Instruments’ Developer Zone
  • Acoustics and Measurement, Industrial Client
  • Reduced-Noise Gas Flow Design, NASA Glenn Research Center
  • Noise Control, The University of Texas at Austin: Fall Semester

Building Acoustics

  • Sound Transmission between Doctor’s Office and Spin Class
  • Sound Transmission between Pub and Yoga Studio
  • Retro-fit window design for quiet office
  • Recording studio sound isolation and room acoustics
  • Room Acoustics on Trading Floor
  • Sleep Disturbance in Condominium
  • Orthodox Church: Room Acoustics, Sound Isolation and Mechanical Noise
  • Dynamometer in Adjacent Commercial Rental Space
  • Confidential Speech Privacy
  • Retrofit Noise Control for Video Recording Studio
  • Data Center
  • Server Laboratory
  • Dog Grooming Facility
  • Cafeteria
  • Acoustical Test Facility Design for Spaceflight Hardware
  • Acoustical Test Facility Design for Computer Manufacturer
  • Integration of Drop/Shock Lab into Building housing Acoustics Test Facility
  • Vibration and Acoustics Test Facility Design
  • Customer Service Telephone Center Adjacent to Manufacturing Operation
  • Entertainment Noise Intrusion into Hotel
  • Railroad Noise Intrusion into Office Building
  • Witness ASTM E90 Testing
  • Measure ASTC and FIIC performance of 15 floor-ceiling assemblies in situ
  • Measure NIC performance of music practice room doors in situ
  • Measure sound isolation of noise control enclosure in situ
  • Exterior- and interior sound isolation, HVAC noise control for 21,000 seat facility (LDS Conference Center, Salt Lake City, UT, 1995)

Environmental Noise

  • Railroad noise and vibration at proposed hotel site
  • Railroad noise at new development (HUD)
  • Criteria for gas compressor station noise in semi-rural area
  • Gas turbine power plant noise in rural area
  • Wind turbine noise on rural property
  • Development of sound-absorbing highway sound barriers
  • In situ measurement of reflections from large retaining wall
  • Ironworks and Forge compliance with New Zealand codes
  • Outdoor Entertainment audible in nearby neighborhood
  • Audibility of Noise from Gas Compressor Station
  • Predict Noise from Gas Compressor Station
  • Measure Noise from Gas Compressor Station
  • Audibility of Noise from Wind Turbines
  • Wastewater Treatment Plant
  • Water Treatment Plant
  • Music Festival vs. City Ordinance

Industrial Noise Control

  • Low-frequency [6 Hz] sound study related to facility-wide shop-air compressors
  • Comprehensive Noise Control Action Plan,  helicopter blade repair facility.
  • Buy-Quiet Process for Construction Industry (NIOSH)
  • Combustion-Air Blower Noise Enclosure at Coal-Fired Power Plant
  • Buy-Quiet Process Roadmap (NASA)
  • Comprehensive Noise Control Action Plan, Sheet and Coil Aluminum Plant
  • Comprehensive Noise Control Action Plan, Industrial Fasteners Plant
  • Comprehensive Noise Control Action Plan, Industrial Plant
  • Reduced-Noise Gas Flow Design Guide for NASA Glenn Research Center
  • Buy-Quiet Guide for NASA Glenn Research Center
  • Noise Control for Heavy Equipment Operators in Surface Mining
  • Noise Control Recommendations for Surface Milling Machine
  • Noise Map for Plastic Bottle Cap Manufacturing Plant
  • Noise Control for Aerospace Nozzle Test Facility

Acoustical Laboratory Design

  • Pure-Tone Sound Power Qualification of Reverberation Chamber
  • Test Facility Design for a multi-chamber acoustical test facility for the testing of personal computers and servers, integrated into commercial building
  • Acoustical Test Facility Design for Spaceflight Hardware
  • Acoustical Test Facility Design for Computer Manufacturer
  • Chamber qualification for anechoic and hemi-anechoic chamber
  • Evaluate EMC chamber for use as acoustical test chamber
  • Analysis to predict anechoic and hemi-anechoic chamber performance from wedge impedance data
  • Vibration Test Facility Design, seismic and shaker tables, integrated into commercial building
  • Vibration Test Facility Design, drop-shock and shaker tables, integrated into commercial building housing an acoustical test facility
  • Improve Performance of Reverberation Chamber for Appliance Manufacturer’s Technology Center
  • Improve Performance of Reverberation Chamber for HVAC Manufacturer
  • Improve Performance of Reverberation Chamber for Appliance Manufacturer