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Latest Noise News

NoiseTools v1.6

NoiseTools v1.6 is Now Available

The new version of the NoiseTools software, version v1.6, is now available. A range of new features and functions have been added to this version to make accessing and analysing your noise data easier than ever before. Let’s take a look.

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Cirrus Welcomes New Engineering Director

Press Release: Cirrus Welcomes New Engineering Director

Cirrus Research’s Steve O’Rourke is stepping down as Director after an impressive 23 years with the company.

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Can Noisy Neighbours Ruin Your Property Sale?

Can Noisy Neighbours Ruin Your Property Sale?

Any estate agent will tell you about typical property buyers’ most obvious deal-breakers. Location, traffic, crime and even failing local schools all spring to mind. But what about the many harder to see factors? What can turn a keen buyer into a reluctant buyer – or worse, lose interest in the purchase entirely?

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Recommended By Our Noise Experts


What are Octave and Third Octave Band Filters on a Sound Level Meter?

When more detailed information about a complex sound is needed, the frequency range of 20Hz to 20kHz can be split into sections or bands. This is done electronically within a sound level meter.

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a sound level meter to IEC 61672 standard

What’s the Difference Between a Class 1 and Class 2 Sound Level Meter?

We’ve covered the differences between Class and Type in sound level meter standards in a previous post but what the differences between a Class 1 and Class 2 sound level meter?

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What are A, C & Z Frequency Weightings?

On your sound level meter or noise meter you will often see references to Frequency Weightings such as ‘A’, ‘C’ or ‘Z’.

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Cirrus Product Updates

noisetools version for windows 10

NoiseTools is Now Compatible with Windows 10

A new version of the NoiseTools software, version v1.5.3, is now available for download and is fully compatible with the new Windows 10 operating system. Here’s your guide to downloading the latest version of NoiseTools on local and networked systems.  Read More »

enter the world of vibration monitoring with cirrus research

Enter a New World with Cirrus Research

Cirrus is evolving. We want to make safety at work easily achievable for everyone. That’s why we’re entering into the world of vibration with the launch of the Revo™ Vibration Meter. Join us on our journey.

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Tonal Noise Analysis with Optimus Green Sound Level Meters

Often the sound energy from a noise source will be spread over a wide band of frequencies. Sometimes a noise source will emit noise that is concentrated in a narrow part of the spectrum or contains a high proportion of energy at a single frequency (a “pure tone”).  This is referred to as tonal noise.

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