Firmware Options

STI-PA Speech Intelligibility Option The STI-PA analyzer option allows durable and reliable speech intelligibility measurement within 15 seconds (typical). 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's with automatic recalculation of the STI values. Find more details about STI-PA in practice in the Application Note: Speech Intelligibility Acoustilyzer User Manual (incl. many practical hints) NTi Audio #: 800 000 013

STI-PA Post Processing Measuring speech intelligibility with realistic environmental noise is often not applicable, e.g. in railway stations these measurements might not be carried out during peak hours at highest background noise level. In practice the STI-PA measurement will be much rather taken during the night as less persons getting disturbed by the played test signal and post calculated there after. The post processing software is available free of charge in the download section here.

ML1 - AL1 Crossgrade Option The ML1 - AL1 Crossgrade package enables to load the Minilyzer firmware onto the Acoustilyzer, providing additional test functionalities, such as THD 2nd - 5th harmonics vu-PPM Balance Frequency Sweep Time Sweep Scope Induction Loop Mode NTi Audio #: 800 000 012

Hardware Accessories

 

MiniSPL, class 2 measurement mic The MiniSPL is a battery powered measuring microphone. It is the perfect accessory for the Acoustilyzer. Factory calibrated. Supplied with Mic clamp, wind protection and individual calibration chart. Read more... NTi Audio #: 600 000 022

M2010, class 1 frequency response The M2010 is a very compact and accurate measurement microphone operating with 10V - 48V phantom power supply (additional battery powered phantom power supply necessary for operation with the AL1). Read more... NTi Audio #: 600 040 010

NTi Audio TalkBox The NTi Audio TalkBox greatly simplifies the acoustical feed of the STI-PA intelligibility test source signal into closed sound reinforcement systems. It presents the standardized voice-like acoustical signal emission simulating a human talker according to IEC 60268-16, combined with a TNO certified speech intelligibility signal at standardized levels. Read more... NTi Audio #: 600 000 085

Adapter -20dB This adapter extends the electrical balanced input range of the Acoustilyzer up to +40 dBu. This accessory is ideally used when measuring amplifier power output. Accuracy is 0.1% balanced to balanced. Read more ... NTi Audio #: 600 000 014

Precision Calibrator 94/114 dB, Class 1 The precision calibrator ensures accurate sound level measurements. It generates 94 or 114 dBSPL reference tones @ 1kHz for calibration of 1/2" and 1/4" measurement microphones (compatible to all NTi Audio microphones). NTi Audio #: 600 000 390 Download product data here.

Soft Pouch The soft pouch protects your Analyzer against shock and dust. With its convenient belt-clip, you can keep your Acoustilyzer closely for those tasks that require both hands. NTi Audio #: 600 000 012

AL1 Soft Pouch with Microphone Holder Soft pouch with additional MiniSPL microphone holder. The soft pouch protects your analyzer and measurement microphone against shock and dust. With its convenient belt-clip, you can keep the set closely for those tasks that require both hands. NTi Audio #: 600 000 019

Minstruments System Case Store your valuable Minstruments in this compact system case with with adequate extra space for your cables and connectors for those "out in the field" jobs. NTi Audio #: 600 000 020

Calibration Certificate Individual calibration certificate with serial number for the new Minstrument. The calibration certificate needs to be ordered together with the Minstrument. All product testing, calibration and adjustment is carried out according to ISO 9001:2000 regulations. NTi Audio recommends calibration in yearly intervals. Calibrations are carried out at NTi Audio. NTi Audio #: 600 000 018