Day Sequerra iLM4ST

June 1, 2010

Stereo loudness monitor
Current audio level meters measure the amplitude of the audio signal -- either the RMS (root mean square) voltage of an electrical signal or the sound pressure of an acoustical signal. The iLM4ST simultaneously measures the perceived loudness of four stereo channels of audio using industry standard ITU-R BS.1770/1. Key features include four AES3 stereo inputs, balanced on 75ohm BNC and balanced on 110ohm XLR connectors, LED audio level meters, front-panel headphone monitor, and rear-panel GPIO port and Ethernet interface.