View Tag: ‘Stewart’
Volume 13
Early Development of Measurement Microphones, the Audiometer and its use in Sound Evaluation, the Decibel, and the Sound Level Meter
In the late 1800s and early 1900s, much effort went into devising an accurate and portable means of measuring sound. Along the way, one of these efforts resulted in the accidental invention of the audiometer which was later then used for comparative listening evaluation of sound before sound level meters became available. This paper will concentrate on measurement microphones, the audiometer, the decibel, and the sound level meter.
Volume 12
The Effect of Shooting Glasses on Earmuff Attenuation Measured with Acoustic Test Fixtures and Firearm Impulses
Firearm users are faced with conflicting or inaccurate information when choosing personal protective equipment. While both ballistic safety glasses and hearing protection are recommended for use with firearms, product labeling does not reflect potential changes in performance when using both devices simultaneously.