ASA/ANSI S12.61-2024: Noise Emission Values of Machinery
Due to the presence of machinery, engines, and heavy equipment, industrial environments can produce high levels of noise. The noise can be loud enough to…
ASA/ANSI S12.12-1992 (2024): Sound Power Levels
Using sound intensity measurements to determine the sound power of noise sources provides a more complete picture of a sound source. Not only indicating the…
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/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,”…