NTi Audio
LESS NOISE. MORE SOUND
XL2 Audio and Acoustic Analyzer

Speech Intelligibility STIPA

Public address systems in buildings like airports, railway stations, shopping centers or concert halls have to clearly inform persons in danger about escape information and directions in case of an emergency. The XL2 Analyzer measures the speech intelligibility of emergency systems in accordance with the standard IEC 60268-16:2011 (edition V4.0).

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.

STIPA Measurement with XL2 Analyzer

The XL2 Analyzer measures the speech intelligibility according to the latest revision of standard IEC 60268-16:2011 (edition 4) and older editions. 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.
  • Minirator MR-PRO
    Test signal generator, required for audio systems with line inputs
  • STIPA Test CD
    (included)

NTi Audio #: 600 000 338

XL2 STIPA Analyzer



STIPA Reporting Tool

STIPA Reporting Tool(Click to enlarge)

The STIPA Reporting Tool creates measurement reports according to the IEC 60268-16 and VDE0833 standards. It combines the STIPA measurement taken at quiet conditions and the actual ambient noise caused by the public, e.g. during day-time. This emulates the expected STIPA value at real-life conditions.

Download the STIPA Reporting Tool at the
XL2 Support website.

Test Signal Source

NTi Audio Talkbox

NTi Audio TalkBox

The NTi Audio TalkBox is required for audio systems with voice microphones.

The NTi Audio TalkBox feeds the test signal into the operator microphone of sound reinforcement systems. It presents the standardized voice-like acoustic signal emission simulating a human talker according to IEC 60268-16, combined with a TNO certified speech intelligibility signal at standardized levels. This setup considers the entire signal path for an accurate STIPA measurement. It includes all effects of the operator's microphone and environment.

The TalkBox provides two major advantages for STIPA measurements:
  • An extended test coverage and an easy to handle test signal injection.
  • Sampling frequency deviations - a dangerous trap when using portable CD players - are completely eliminated.



Minirator MR-PRO

Minirator MR-PRO

The Minirator MR-PRO is used for electrical signal injection into public address systems that commonly use alarm messages from a hard drive (systems without a microphone).


STIPA Test Signal CD

This CD is included with STIPA Option Package.

STIPA Reporting Tool

STIPA Reporting Tool

The STIPA Reporting Tool creates measurement reports according to the IEC 60268-16 and VDE0833 standards. Import the data directly from your XL2 including the ambient noise measurements. The corresponding speech intelligibility STI or CIS values are shown.

The STIPA Reporting Tool is free to download on the XL2 support website.

System Requirements:
  • PC running Windows XP, Vista or Windows 7
  • Excel 2003, 2007 or 2010 (32 bit or 64 bit versions)

Order Information

Exel Set for STI-PA Testing

Exel Kit for Speech Intelligibility Measurements

including
  • XL2 Audio and Acoustic Analyzer
  • STIPA Option for XL2
  • M4260 Measurement Microphone
  • Minirator MR-PRO
  • ASD Cable for XL2
  • Cable Test Plug (MR-PRO)
  • 2x Mains Power Adapter
  • 3x Calibration Certificates
  • Exel System Case

NTi Audio TalkBox

NTi Audio #: 600 000 085

Get more Information

Buy at the web shop or contact NTI Americas .
Speech
Intelligibility
STIPA

Contact NTi Audio

NTI Americas Inc.
Tigard, Oregon
Thomas E. Mintner
+1 503 684 7050
Email

Links to Solutions

Application Notes