ETS-Lindgren's Predictable Field Enclosures are designed to provide acoustical and statistical energy analysis, to optimize the engineering and design requirements needed for an end-product application.
To approximate the sound field found in a hemi-anechoic chamber without the use of wedges, the walls and ceiling in a predictable field enclosure are manufactured with several inches of sound absorbing material.
Predictable field enclosures provide an engineering or survey-grade sound field (dependent on enclosure size), for sound power testing. While precision-grade sound power testing requires a hemi or full anechoic chamber, a predictable field enclosure provides an economical solution for engineering or survey grade tests allowed by many standards.
Used primarily for design engineering and product development, predictable field enclosures are also used for sound intensity testing, where their primary function is to control ambient noise and increase measurement accuracy by reducing reflections.
Predictable field enclosures can be installed with or without acoustical floors, however for maximum sound isolation performance, an isolated floor system should be used.
Quality Assurance Sound Pressure Level Measurements (Product Line)
Sound Quality Measurements and Evaluations of Components
Sound Power
Sound Pressure Measurements of Product Noise Emissions Allows Comparative Measurements to be Made with a Reference Design or Reference Sound Source
Computer Sound Level Emissions
Pass/Fail Quality Control of Small or Medium Sized Electrical, Audio, or Mechanical Parts
Engineering Design where a Precision-grade Sound Field is Not Required
Audio Production
Critical Listening
Noise Isolation