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Sound and Vibration Instrument Hire and Calibration

STIPA - Speech Transmission Index Public Address systems


 
NTi XL2 Sound Level Meter

NTi Audio XL2 : STIPA - Speech Intelligibility Measurement option £ 27 a day *
 
Public address systems in shopping centres, railway stations, airports, concert halls etc., have to clearly inform people about escape information and directions in case of an emergency, as well as more general information.
 

The XL2 analyser with the STIPA option measures the speech intelligibility in accordance with the current BS EN 60268-16 Standard and earlier versions.

It includes ambient noise correction and automated averaging of measurements. The XL2 displays the measurement results as STI or as CIS results, accompanied by the individual levels and modulation indices of the seven octave bands.
 
The measurement results are acquired from the dedicated STIPA test signal source:
 
NTi Audio : TalkBox - Acoustic Signal Generator, required for audio systems with voice microphones, thus measuring the complete signal chain.
NTi Audio : Minirator MR-PRO - Test Signal Generator, required for audio systems with line inputs
 
STIPA Reporting Tool : included with each hire, creates measurement reports according to the BS EN 60268-16 standard. Imports the data directly from your XL2 including the ambient noise measurements. The corresponding speech intelligibility STI or CIS values are shown. The report emulates the expected speech intelligibility in real-life conditions.
 
System Requirements :
PC running Windows XP, Vista or Windows 7
Excel 2003, 2007 or 2010 (32 bit or 64 bit)
 
All the other features of the XL2 Sound Analyser
 

Full STIPA Measurement Kits


NTi XL2 : Analyser + MR-Pro Minirator and TalkBox £ 37 a day *
 
NTi XL2 : Sound Analyser with STIPA option
TalkBox : STIPA Reference Acoustic Generator : for audio systems with voice microphones to measure the complete signal chain
MR-Pro Minirator : Audio Generator : required for audio systems with line inputs
 

We also hire RASTI systems

See also our full sound level meter list and sound level meter comparison table
 
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* Our standard hire charges are based on a 4-day minimum period, details other options.