ASA/ANSI S1.18-2018 (R2023): Acoustic Impedance Method
In environmental acoustics, the ground effect is described by its acoustic impedance. By analogy with the electrical or mechanical impedance, the ground impedance effect accounts for…
IEEE/ANSI C63.10-2020: Unlicensed Wireless Devices Compliance Testing
With the longest wavelengths in the electromagnetic spectrum, radio wave emissions derive from cosmic sources throughout the universe. More locally, radiofrequency emissions flourish, thanks to…
ANSI/ASA S1.13-2020 Measuring Sound Pressure Levels in Air
Have you heard: the American National Standard ANSI/ASA S1.13-2020: Measurement Of Sound Pressure Levels In Air has been revised. What is Loudness? In the beginning,…
ANSI/ASA S12.6-2016 Hearing Protectors Real-Ear Attenuation
The human ear, despite being an incredibly complex system, comprising sensory organs, bones, and other anatomical structures, can have its usefulness easily detracted from, or…
ANSI/ASSP A10.46-2020: Construction Hearing Loss Prevention
Transmitting sounds through our internal hammer, anvil, and stirrup—paired with a variety of auditory structures—is one of the five main ways in which we sense…
ANSI/ASA S12.2-2019: Criteria For Evaluating Room Noise
Background Noise Distractions and Harm All noises are in your head. After sound causes the eardrum to vibrate, a series of processes occur, and the…
Procedure For Determining Audiograms In Toothed Whales (Odontocetes)
Communication isn’t unique to human society, nor is it confined to the terrestrial world. Whales, as highly-intelligent mammals bound to the sea—and whales are mammals,…
ASME PTC 36-2018: Measurement of Industrial Noise
ASME PTC 36-2018: Measurement of Industrial Noise has been released. As it is a revision of ASME PTC 36-2004 (R2013), there are some modifications to…
Measuring Noise Reduction in Hearing Protective Devices: Labeling Requirements and Guidelines
In the United States, you may come across hearing protection devices, such as earplugs, that are labeled as being compliant with ANSI S3.19-1974. Minimal background…