Installed Sound & Evac Test Solution
Clarity of sound and intelligibility of speech are the most important factors for successful installation of audio-acoustic systems in large commercial spaces, multi-purpose public rooms, teleconference systems, airports, train stations and stadiums.
NTi Audio provides contractors and audio engineers with a comprehensive handheld solution set of diagnostic and measurements tools for installing, commissioning and troubleshooting such environments so that the background music is pleasant, conference PA systems produce acceptable levels of intelligibility of speech, and announcement and emergency messages are loud and clear wherever you may be located in the building.
- Commissioning, verification, periodic performance checks and troubleshooting of electro-acoustic installations at airports, railway stations, public buildings including 70/100V installations
- Confirm compliance with system specifications and regulations such as IEC 60849, EN 54-24
- Measure speech intelligibility STIPA in accordance with the IEC 60268-16 standard
- Handheld and compact design for field applications
- Stores all test results to SD Card for documentation
- Improved efficiency with dedicated measurements utilizing user-defined start-up profiles and appending test results to previous data records
- Calibrated audio and acoustic measurement system
The XL2 measures the intelligibility of speech in an installed environment and generates a measurement report. The measurement set provides you with detailed analysis of sound pressure level, frequency response, reverberation time, ambient noise and distortion, all of which influence speech intelligibility.
“What’s that hum? Why is there no sound?”
The Minirator signal generator and XL2 Analyzer are valuable instruments for fast troubleshooting of the audio signal path throughout the installation. The MR-PRO verifies phantom power supply of microphones, checks XLR cables and measures the load impedance of 70/100 Volt speakers.
Polarity, Delay, Reverberation Time
Use the MR-PRO with the XL2 for an in-depth verification of the polarity - frequency relation for speaker cabinets or other multi-way systems. Configure your delay speakers and analyze the reverberation time RT60 to improve the sound quality and speech intelligibility.
Noise Curves and System Spectral Response
Use the Minirator to set up PA systems and monitors. Generate pink noise and optimize the frequency response of your system with the XL2 Analyzer. Measure the spectral distribution of the ambient noise and import your data into the free MS Excel template to verify if the noise rating requirements are met.
With the TalkBox you can perform a complete end-to-end evaluation of the speech intelligibility STIPA from the talker’s microphone to the listener’s ears. The TalkBox is an acoustic signal generator for speech intelligibility measurements in evacuation and announcement systems.
Test, One, Two
You will often hear installation engineers repeating the phrase 'test, one, two' while setting up microphones. They are not practising counting; they are checking the frequency response of the microphone. The 'uhn' sound of the word 'one' produces a low vocal frequency, while the ‘t’ sound in ‘two’ produces a high vocal frequency. (Counting 'three, four' adds no more value except perhaps to demonstrate that we installation engineers can, in fact, count past two.)
The NTi Audio TalkBox simplifies and improves the setup of microphones by generating a reference human speech signal or other standard audio test signals, so that all frequencies (not just the frequencies produced by 'one, two') can be efficiently adjusted by a single person.
The TalkBox generates all test signals for professional conference room commissioning. Simply position the TalkBox at each speaking position.
Exel Set for Installed Sound
- XL2 Audio and Acoustic Analyzer
- STIPA Option for XL2
- M4260 Measurement Microphone
- Minirator MR-PRO
- ASD Cable for XL2
- Cable Test Plug (MR-PRO)
- MR-PRO 70/100V Protection
- 2x Mains Power Adapter
- Exel System Case
NTi Audio TalkBox
NTi Audio #: 600 000 085