WELCOME TO PRARL

Pacific Rim Acoustical
Research Station

What We Deliver

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ISO/IEC 17025 aligned testing for ASTM, ISO, and AES standards
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Material testing, speaker measurement, and environmental acoustics
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Solutions for manufacturers, architects, and researchers
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Improved sound performance, regulatory compliance, and noise control

Why PRARL?

Founded by John H. Brandt III, a renowned acoustician and studio designer, together with Ron Sauro of NWAA Labs, PRARL is built on decades of practical experience. Their combined expertise strengthens the lab’s capabilities in acoustic measurement, product testing, and complex noise analysis.
Here’s what sets PRARL apart:
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Unmatched Expertise
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John H. Brandt III brings over 50 years of experience and has designed more than 1,100 studios worldwide.

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Partnered with Ron Sauro of NWAA Labs, a former NASA scientist and leader in acoustical standards development.

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Collaborations with leading universities, institutions, and standards committees worldwide.

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World-Class Testing Capabilities
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Low-frequency testing capability down to 20Hz, achieving sound pressure levels up to 142 dB.

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Certified absorption and transmission loss testing following ASTM and ISO standards.

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Industry-leading 360° diffusion and speaker directivity mapping, unparalleled in the region.

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Cost-Effective and Globally Compliant
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Testing services priced 30-50% lower than Western labs.

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Compliant with stringent ASTM, ISO, and AES standards, serving clients globally.

Explore Our State-of-the-Art Facilities

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Certified to ISO 354 standards, our reverberation room supports comprehensive material absorption testing. We measure sound absorption coefficients with accuracy necessary for regulatory compliance and product development.

Certified to ISO 354 standards, our reverberation room supports comprehensive material absorption testing. We measure sound absorption coefficients with accuracy necessary for regulatory compliance and product development.

Certified to ISO 354 standards, our reverberation room supports comprehensive material absorption testing. We measure sound absorption coefficients with accuracy necessary for regulatory compliance and product development.

Certified to ISO 354 standards, our reverberation room supports comprehensive material absorption testing. We measure sound absorption coefficients with accuracy necessary for regulatory compliance and product development.

Certifications, Standards & Accreditations

At PRARL, we adhere to globally recognized standards and certifications that ensure the accuracy, reliability, and global acceptance of our testing services.
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ISO/IEC 17025 Compliant
Ensures rigorous testing methodologies and laboratory competence.
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ASTM Standards
C423, E90, E1050, C522, C518. These cover absorption, transmission loss, and material testing.
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SAE Standards
J1400, specific to automotive acoustic testing.
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AES Standards
For maintaining high fidelity in audio equipment evaluation.
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Active Memberships
Audio Engineering Society (AES), Acoustical Society of America (ASA), and Institute of Noise Control Engineering (INCE).
Our commitment to these standards guarantees that the data and certifications you receive from PRARL are recognized and respected globally across industries, including automotive, construction, electronics, and healthcare.

Services We Offer

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Material Acoustic
Properties Testing
Absorption, reflection, and transmission measurements.
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Speaker & Audio
Transducer Measurement
Full-range directivity balloons, polar plots, and frequency response analysis.
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Environmental & Building
Acoustics Analysis
Environmental & Building Acoustics Analysis
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Research & Development
Partnerships
Collaborative projects with academia and industry.
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On-site Field Testing &
Verification
Portable solutions for real-world acoustic validation.
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Custom Acoustic
Consultation & Training
Tailored workshops, design consultancy, and technical documentation.

Our Working Process

Sample Preparation & Logistics
Discuss your testing needs via online submission or consultation call.
1
Define standards, specifications, and deliverables.
Project Scope & Quote
2
Sample Preparation & Logistics
Send your materials or schedule on-site testing.
3
Our team conducts precise testing per agreed protocols.
Testing & Analysis
4
Detailed Reporting
Receive comprehensive reports with data visualizations, certifications, and recommendations.
5
Review findings and explore optimization or compliance pathways.
Follow-Up Consultation
6

Who We Serve

PRARL supports a wide range of industries with specialized acoustic testing and research.
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Construction
& Architecture
Materials testing, soundproofing, and building code compliance.
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Automotive
& Transport
Cabin acoustics, vibration analysis, and soundproofing solutions.
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Medical Devices
& Healthcare
Acoustic signature analysis for medical equipment.
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Consumer
Electronics
Testing for speaker systems, microphones, and headsets.
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Professional Audio
& Recording Studios
Directivity testing and validation of acoustic treatments.
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Government
& Defense
Noise mapping and environmental impact assessments.
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Academic Research
Institutions
Collaborative research projects and student training programs.
We serve clients across Asia-Pacific, Europe, North America, the Middle East, and Africa.

Testimonials

Shaping the Future of
Acoustics Together

PRARL is a dedicated testing facility that thrives on precision, research, and collaboration. We help clients validate products, push research boundaries, and tackle unique challenges in sound science. If your work calls for expert testing or a fresh perspective on acoustics, let’s connect and make it happen.

Ready to Get Started?

Contact us today to request a quote or schedule a consultation.