News

24. May 2017

XL2 Sound Level Meter Calibration according to IEC61672

XL2 Sound Level Meter Calibration according to IEC61672

NTi Audio offers calibration services for its devices in addition to the broad range of audio, acoustic and vibration measurement solutions. Besides the calibration of individual system components, the sound level meter calibration according to IEC61672-3:2013 is now available for the XL2. The specified procedures for periodic sound level meter testing is followed and a comprehensive calibration certificate presented.

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19. April 2017

New TalkBox Test Signal to Measure Speech Intelligibility in Schools

New TalkBox Test Signal to Measure Speech Intelligibility in Schools

The intelligibility of speech in schools is an important part of successful learning. According to the ANC (Association of Noise Consultants), the typical speech level for a teacher in the classroom (at 66.5 dB) is higher than the normal speaking level. For this reason, NTi Audio now offers the speech intelligibility test signal for the TalkBox at this level. This is a free product upgrade for all TalkBox users.

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18. April 2017

Let’s Clear Up Some Things About FFT

Let’s Clear Up Some Things About FFT

This second part of this series deals with specific aspects that are helpful in the practical application of FFT measurements. FFT measurements are used in numerous applications. The results are usually presented as graphs and are easy to interpret. For accurate FFT measurements, there are some things to look out for. This article provides valuable tips.

 

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13. April 2017

Class 1 Sound Level Meter with Attached Microphone

Class 1 Sound Level Meter with Attached Microphone

The XL2-TA Sound Level Meter has established itself as one of the most popular class 1 measurement instruments worldwide. Its extensive basic functions coupled with the open data format allow for efficient measurements. The extended type approval for operation with an attached microphone, which was recently received in Austria, further increases the value of the instrument.

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23. March 2017

Determination of the Rating Level for Neighborhood Noise Assessment according to DIN 45645

Determination of the Rating Level for Neighborhood Noise Assessment according to DIN 45645

The rating level Lr is used as a measure of the noise level in a neighborhood. The XL2 Sound Level Meter ensures that all necessary measurement data is recorded. The XL2 Data Explorer PC-software is tailored to the purpose of evaluating and calculating the Rating Level. Noise penalties for tonality and impulsivity, according to the DIN 45645 standard, can be automatically added. This provides an expert tool for rating and assessing noise objectively.

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23. March 2017

Noise Assessment according to BS 4142:2014 with the XL2

Noise Assessment according to BS 4142:2014 with the XL2

The XL2 Sound Level Meter is built for precisely measuring and recording industrial and commercial sound. The Data Explorer PC-software evaluates the recorded data in detail and calculates the Rating Level Lr. A character correction for tonality and impulsivity can be automatically added using the objective method detailed in BS 4142:2014. This provides an expert tool for rating and assessing sound of an industrial and/or commercial nature.

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22. March 2017

Italian Noise Assessment according to DM 16 marzo 1998

Italian Noise Assessment according to DM 16 marzo 1998

The XL2 Sound Level Meter is built for precisely measuring and recording industrial and commercial noise. The Data Explorer PC-software evaluates the recorded data in detail and calculates the Rating Level Lr. It is thus possible to verify the levels of noise and impulse data according to the DM 16 marzo 1998 standard. This provides an expert tool for rating and assessing industrial and transport noise.

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19. March 2017

Austrian Convention Center puts their trust in the XL2

Austrian Convention Center puts their trust in the XL2
The stunning Montforthaus Culture and Convention Center in Feldkirch, Austria, was officially opened in January 2015. Symphony concerts, fairs, social events, conferences, club events, school balls, lectures and pop concerts are a regular feature in this conference and congress facility which can accommodate up to 3,000 participants. The audio quality and intelligibility of speech presentations in ...

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26. February 2017

NoiseScout - Unattended Noise Monitoring with user-defined Day/Night-Limits

NoiseScout - Unattended Noise Monitoring with user-defined Day/Night-Limits

NoiseScout is the professional solution for unattended sound level monitoring. Around the clock, all the levels recorded with the XL2 Sound Level Meter are available in real-time on a website for viewing in graphs and for download. Automatic alert emails are sent as soon as a limit is exceeded. The latest NoiseScout feature offers the ability to set individual limits for day and night.

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21. February 2017

Let’s Clear Up Some Things About FFT…

Let’s Clear Up Some Things About FFT…

The "Fast Fourier Transformation" (FFT) is an important measurement method in the science of audio and acoustics measurement. It converts a signal into individual spectral components and thereby provides frequency information about the signal. FFTs are used for fault analysis, quality control, and condition monitoring of machines or systems. This article explains how an FFT works, the relevant parameters and their effects on the measurement result.

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