Experts in our field
At Extant, we pride ourselves on coupling our expert services with effective project management, communication and a team approach to provide solutions for all of your Acoustic, Audio-Visual, Noise and Vibration issues. Our staff will work seamlessly with you and the project team to perform the services necessary to provide the most effective and efficient solutions for your project.
Extant offers professional consulting services addressing Acoustical, Audio-Visual, Noise and Vibration issues and providing our clients with innovative, effective, pragmatic and value-oriented solutions. Our approach, measurement programs, analyses and methodologies are tailored to meet the needs specific to the unique setting of your project.
Architectural Acoustics
Audio/Visual
Noise and Vibration
Architectural Acoustics
- Room acoustic modeling, prediction, and optimization for performance spaces, houses-of-worship, schools and code compliance;
- Design and evaluation of building envelope elements;
- Wall, ceiling, and floor partition design, modeling and performance prediction;
- Development of room acoustic design criteria;
- Room finishes and furnishings;
- Design improvements to control unwanted noise intrusion;
- Develop and accentuate the acoustical sense of space;
- Field testing and measurement of the acoustic
- Testing, prediction and recommendation of optimum acoustical characteristics:
- reverberation time,
- noise criterion,
- intelligibility,
- articulation index and
- signal-to-noise-ratio;
- Measurement, prediction and recommendations for:
- Sound Transmission Class (STC, FSTC, ASTC),
- Noise Isolation Class (NIC, NNIC),
- Impact Insulations Class (IIC), etc.
Audio Visual
(Design, Specification, & Oversight)
- Sound reinforcement systems for speech and music
- Public address systems
- Multi-use paging, background music, and performance systems
- Assisted listening systems and Multilingual/interpretation systems
- Recording studio near-field, far-field, and fold back systems
- Complete audio-visual, multimedia presentation systems
- Distance learning broadcast suite
- Active acoustic/sound masking systems
- Video production, distribution and broadcast
- Digital signage
- Theatrical sound, lighting, and video consulting
Noise and Vibration
Noise and Vibration
- Noise and vibration measurements, data acquisition, and analysis;
- Ambient and background acoustical environment surveys;
- Noise and vibration modeling, for existing, future and proposed scenarios;
- Building sound insulation measurement, evaluation, prediction and recommendations;
- Wall/partition performance analysis;
- Construction noise and vibration assessment;
- Construction observation and monitoring;
- Federal, state, regional, and local regulatory compliance evaluations;
- CEQA, NEPA and other environmental documents:
- Environmental Impact Reports/Statements,
- Initial Studies,
- Mitigated Negative Declarations,
- Environmental Assessments.
- Policy and guidance document preparation:
- General Plans;
- Noise Elements;
- Codes and Ordinances;
- Master Plans;
- Specific Plans.
- Transportation noise and vibration studies:
- Federal Aviation Administration;
- Federal Highway Administration;
- Federal Transit Authority;
- Federal Rail Authority;
- Caltrans.
- Public involvement and education;
- Mitigation measures development and evaluation;
- Energy project support studies:
- Small- or large-scale, baseload, intermediate and peaking plants;
- Wind turbine and wind farm specific studies
- Drilling operation monitoring;
- FERC licensing;
- CEC regulatory requirements.
Based on the application and project needs, focused documentation, custom graphics and scale drawings prepared by Extant’s experienced staff will help ensure that complex nuances of the acoustical environment are successfully conveyed to the target audience.