ANSI/ASA S3.2-2020: Speech Intelligibility
Loudspeaker systems can be used for sound reinforcement in theaters and concert halls; microphones are used in many applications, including telephones, hearing aids, public address systems…
ASA/ANSI S12.18-1994 (R2023): Sound Pressure Level
Sound pressure is the difference between the pressure from a sound wave and the ambient pressure of what the sound is traveling through (usually air)….
ANSI/ASA S12.60/Part 1-2010 (R2020): Acoustical Performance
Poor acoustical design can often be a problem in the classroom because it results in excessive noise that is disruptive to the learning process and…
IEC 61094-4 Ed. 1.0 b:1995—Working Standard Microphones
Micro (from the Greek word mikros) means “small,” and phone (from the Greek word phone) means “sound” or “voice.” This translates microphone to “small sound,”…
What Is High Noise in the Workplace and Why is it a Hazard?
Excessive noise at work can be a real issue for many. Airports, factories, construction sites, and nurseries are just a few common examples of work…
Reducing the Effects of Noise Pollution from Construction
Although construction sites are notoriously noisy, the issue of noise pollution from construction is often overlooked. This insidious threat can have damaging effects not only…
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…