ANSI/AMCA 320-23: Sound Testing Of Fans
A slower fan speed does not produce a lower sound level. So, what determines a silent fan? The lowest fan sound level during operation is…
ASA/ANSI S12.60-2019/Part 4 (R2024): Acoustics in Schools
Excessive background noise or reverberation in physical education spaces interferes with speech communication and thus presents an acoustical impediment to learning. ASA/ANSI S12.60-2019/Part 4 (R2024):…
ASA/ANSI S12.3-2023: Declaration Of Product Noise Emission Values
When anyone is exposed to 8 hours of 85 dBA or higher each workday without proper protection hearing damage may occur. Repeated exposure to loud…
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,”…
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…
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 S12.2-2019: 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…
Acoustical Society of America (ASA) Standards
Standards developed by the Acoustical Society of America, or ASA (not to be confused with the previous name of ANSI, the American Standards Association), are…