NTI Launches Acoustilyzer AL1
Apr 20, 2004 12:00 PM, Editors
NTI AG announces the launch of the hand-held acoustics analyzer, the AL1, and its extension for speech intelligibility analysis, the STI-PA. AL1 is based on the famous Minilyzer ML1 hardware and reportedly complements its functionality in the acoustics domain. AL1 is available as an independent instrument as well as a new firmware for present ML1 users.
In addition to instantaneous and integrated sound pressure level measurements, the repeatable short-time LEQ and sound exposure level test capabilities complete the event monitoring requirements. The AL1 visualizes the actual audio spectrum (RTA) or the chart view of the SPL/LEQ history without interrupting ongoing sound level measurements. The RTA also permits relative sound spectrum measurements against previously stored references. Stored spectra may be averaged or combined by using the available mathematical functions. The “Max-Min” display helps find dominant room modes and characterization of listening areas.
All measurement results may be logged to the internal memory for further investigations.
The STI-PA analyzer option allows for speech intelligibility measurement within 15 seconds. Besides the single value STI or CIS test result, a detailed view of modulation indices and individual band level results is provided. The STI-PA analyzer includes amplitude weighting in accordance with the 2003 IEC 60268-16 standards release. Acquired measurements may be referenced to previously established background noise level spectra with automatic recalculation of the STI values.
To find out more about the AL1 and the STI-PA’s features, visit www.nt-instruments.com.
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