Acoustic Engineering Insights
Technical guides on anechoic chambers, soundproof enclosures, office pods, and acoustic testing standards.
How to Specify an Anechoic Chamber: A Complete Engineering Guide
Choosing the right anechoic chamber starts with defining your acoustic requirements. This guide covers cutoff frequency, free-field radius, NRC targets, floor loading, and door dimensions for fully and semi-anechoic configurations.
Fully Anechoic vs Semi-Anechoic Chamber: Which Do You Need?
The key difference is the floor. A fully anechoic chamber absorbs sound from all six surfaces including the floor, while a semi-anechoic chamber has a reflective floor. Learn which configuration suits your application.
Understanding Insertion Loss: How to Evaluate a Soundproof Enclosure
Insertion loss (IL) measures how much noise reduction an enclosure actually delivers in practice. This article explains the difference between IL and STC/Rw ratings, and why real-world IL often differs from lab measurements.
Acoustic Wedge Materials: PU Foam vs Mineral Wool vs Fiberglass
The absorptive performance of an anechoic chamber depends entirely on its wedge material. We compare polyurethane foam, mineral wool, and fiberglass wedges on NRC, durability, fire rating, and humidity resistance.
Office Pod Soundproofing Standards: STC, Rw, and What They Mean for Acoustic Privacy
STC 38 vs STC 45 — what do these numbers mean in a real office environment? We explain the STC and Rw rating systems, typical speech privacy requirements, and how to choose an office pod that actually works.
Setting Up an NVH Laboratory for Automotive Testing: Standards and Requirements
A comprehensive guide to designing an automotive NVH lab — from selecting the right semi-anechoic chamber size to meeting ISO 3745, ECE R51.03, and OEM-specific acoustic requirements. Includes drive-in chamber floor loading considerations.