We cover the spectrum

Consulting services

Architectural acoustics, environmental acoustics, vibration monitoring and control, underwater acoustics and expert witness services.

Architectural Acoustics

School multipurpose room with a stage, wall panels and a suspended acoustic ceiling — Illustration Auditoriums and multipurpose rooms

The firm measured ambient noise, STC and RT60 with a Larson-Davis 824 sound level meter and real time analyzer and recommended treatments such as absorption and barriers. STC and IIC rate how well a wall or floor stops airborne and impact sound; RT60 is the time a sound takes to decay by 60 decibels. Listed projects included San Diego City Schools, Poway Unified School District and churches.

Innovative acoustical designs
Room acoustics
- computer simulations
- speech intelligibility
- ambient noise/background noise levels
- reverberation times (RT60)
- STC measurements
- IIC measurements
- schools/classroom acoustics, auditoriums, multipurpose rooms, theaters, performing arts centers, houses of worship
- corporate meeting rooms, open plan office design, commercial/residential
Treatment recommendations
- acoustical barriers
- room absorption treatments
- low noise HVAC
- loudspeaker placement
- masking systems

Environmental Acoustics

Apartment buildings behind a concrete sound wall beside a freeway — Illustration Housing near freeways and rail

The firm prepared community noise surveys and CEQA/NEPA technical noise impact studies, with mitigation recommendations such as sound barrier design. Title 24 analyses check that outdoor noise is reduced to the indoor levels required by California's building code. Listed infrastructure projects included the Moreno-Lakeside Pipeline, Plaza Blvd Road Widening and Caltrans Hwy 210/30.

Community noise surveys
Construction noise mitigation/monitoring plans
Design of permanent noise monitoring systems
CEQA/NEPA technical noise impact studies
Environmental documents (technical noise section)
Acoustical measurements
Acoustical analysis
Transportation noise
Industrial noise
Aircraft noise
Infrastructure projects: rail, highway, pipelines etc.
Animal disturbance noise (dogs, aviaries etc.)
HVAC/mechanical systems/electrical systems/plumbing
Exterior and interior noise analysis
Multifamily housing/condominiums, commercial/residential
Title 24 exterior to interior noise analyses
Mitigation recommendations
- sound barrier design
- architectural modifications

Vibration Monitoring and Control

Air-handling units standing on steel spring vibration isolators — Illustration HVAC units on spring vibration isolators

The firm offered vibration analysis, data acquisition, machinery diagnostics, condition based monitoring programs and damping treatments. The principal's earlier U.S. Navy work included machinery and hull vibration monitoring and noise and vibration monitoring of the submarine fleet.

Vibration analysis
Condition based maintenance/monitoring programs
Data acquisition and analysis
Machinery diagnostics
Damping treatments

Underwater Acoustics

Submarine passing under the Golden Gate Bridge — Submarine under the Golden Gate Bridge.

Underwater acoustics covered radiated noise, structureborne noise, airborne noise and hearing conservation, sonar self-noise and vibration control. It drew on the principal's earlier U.S. Navy work on ship and submarine silencing at NAVSEA and Mare Island Naval Shipyard.

Radiated noise
Structureborne noise
Airborne noise/hearing conservation
Sonar self-noise
Vibration control

Expert Witness Services

Expert witness services in acoustics, noise and vibration were listed as a fifth service area, alongside the architectural, environmental, vibration and underwater work.