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Archive | Noise Measurement

What is reverberation time and how it is calculated?

What is reverberation time and how is it measured?

What is the reverberation time of a room? Reverberation time is the time required for the sound to “fade away” or decay in a closed space. Sound in a room will repeatedly bounce off surfaces such as the floor, walls, ceiling, windows or tables. When these reflections mix, a phenomeon known as reverberation is created. Reverberation reduces when the reflections Read More…

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Calculate Reverberation Time (RT) with the new NoiseTools Module

Calculate Reverberation Time with the NoiseTools RT Module

Introduction to the Reverberation Time Module We’re pleased to announce the release of our new NoiseTools extension module which allows for the calculation of reverberation time in accordance with ISO 3382-2:2008. Using information measured using a suitable Optimus Sound Level Meter, the module allows the calculation of RT60, RT30 and RT20 values from either an interrupted or impulsive noise source. The module also Read More…

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What’s the difference between echo and reverberation?

What’s the difference between echo and reverberation?

This is a question that we get asked quite regularly, especially from customers who are coming across the measurement of reverberation for the first time. I recently came across a simple, clear explanation that was written by Harout Taghilian who is an Acoustic Consultant at Ramboll. Harout wrote: A lot of people are confused about the difference between reverberation and Read More…

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NoiseAid – Support for your Noise Nuisance Measurement & Management

NoiseAid - The Cirrus Noise Nuisance Logging & Reporting Application

What is NoiseAid? NoiseAid is a web-based application that gives you, and your users, a quick and simple way to gather information about the noise sources that they are concerned about. Users can instantly log noise disturbances via any smartphone, tablet, laptop or desktop computer using the simple interface, adding notes when the noise has ended. Details of the noise Read More…

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NoiseTools 1.8 is now available – Find out what’s new in the Cirrus NoiseTools software

NoiseTools 1.8 is now available for download

We’re pleased to announce that the new version of NoiseTools, the Cirrus software that is supplied with our noise measurement instruments, is available for download. This new version is v1.8.0 and can be downloaded, free of charge, from the Cirrus Website. This new version of NoiseTools incorporates a number of updates and enhancements over the previous version, v.1.7.2, as follows: Read More…

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Introducing Octave Band Filters for the doseBadge5 Noise Dosimeter

doseBadge5 with Octave Band Filters

We’re pleased to announce that the Cirrus doseBadge5 Noise Dosimeter now includes 1:1 Octave Band Filters as standard*, adding to the already comprehensive set of measurement data that the unique doseBadge5 can provide. The doseBadge5 is already the best specified dosimeter available with multiple measurement channels, comprehensive data logging, Bluetooth® wireless communications and all of the unique features of the previous generations of Read More…

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[How to] Why Do You Need to Calibrate Your Noise Measurement Equipment?

Why do you need to calibrate your noise measurement equipment?

If you are using your noise measurement instruments to meet any Standards, Regulations or Guidelines, it is essential that your equipment is measuring accurately. Most modern standards, regulations of guidelines will clearly state the standards to which the equipment must comply.

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