SimplexGrinnell (Westminster, MA) and Gold Line (Houston) recently jointly announced a new and accurate instrument for measuring the intelligibility of voice emergency evacuation systems. The new STI-CIS™ Analyzer, as the new instrument is called, utilizes the world standard Speech Intelligibility Index (STI) method of measuring speech intelligibility and the Common Intelligibility Scale (CIS) called for in NFPA 72 and other standards. The hand-held analyzer responds to a proprietary STI-PA* test tone developed at the Dutch National Labs, TNO-Human Factors Group, developers of the STI method. The analyzer is subject to patents issued and/or pending by Bose Corporation, and will be manufactured under license by Gold Line.