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,” […]
acoustics
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 […]
Drywall Acoustics Testing
Countless disturbances and vibrations in the air allow sound waves to permeate throughout the open world. However, the acoustic properties of walls can be controlled […]
±DBCalc and ±DBDelta Mobile Apps from Marshal Day Acoustics
Marshal Day Acoustics released a free app for iPhone and iPad to add and subtract decibel levels ±DBCalc. ±DBCalc is also available on the Google Play store. […]
Acoustics in Permanent and Modular Classrooms
Acoustical Society of America announces new national standards for Acoustics in Permanent and Modular Classrooms. The Acoustical Society of America, headquartered in Melville, NY, announced […]