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Archive | Noise Measurement

Not every day’s a drag – measuring the noise levels of a drag racer

An image of drag racers, after their noise output levels had been recorded.

Cirrus Research recently welcomed the Wilson family to our headquarters in Hunmanby to help them with a very particular noise problem; they needed to ensure that their junior dragster conformed to Motorsport UK noise guidelines, and they reached out to us to help them. In this case study, we look at the backstory of the Wilson family and explain how we were able to measure the noise levels of a drag racer, demonstrating our adaptability and suitability to monitoring motorsport noise.

‘Tis the Season to be Noisy – How Loud is Christmas?

Christmas is traditionally hard on the pocket, but it turns out it some of the most beloved sounds of Christmas can be just as hard on the ears as well. We took an Optimus+ sound level meter to measure the sounds of Christmas…

Noise issues in UK hospitals need more than a Band Aid solution

Noise can affect us in every walk of life, but the place we least expect it to cause problems is in hospital. Learn more about the issues of hospital noise and how it can affect both patients and staff.

Our Extended Black, Red & Green Friday Offers Are Here!

Due to popular demand, we’ve just extended and added to our host of festive offers! All our offer MUST END at 2pm on Thursday. Check them out below! This is the perfect time to add to your fleet of noise monitoring equipment or to make your first investment! With a range of refurbished Optimus® sound level meters and doseBadge® noise Read More…

Cirrus on the right track and getting steamy with railway noise

The marketing team at Cirrus took a trip to a heritage railway to see which railway noises were the loudest. Was it the steam train? Was it the diesel train? Or was it something else entirely? Read our article to find out.

Noise pollution and its effect on the oceans

TIME TO MAKE WAVES AS NOISE SLOWLY KILLS OUR OCEANS Most people who have access to any form of social media or news outlet have become increasingly aware over the last few months, that we are killing our oceans with pollution – plastic, oil, sewage – but there is another form of pollution that doesn’t make the headlines quite as Read More…

What’s the difference between a sound level meter and a noise dosimeter?

I’m relatively new to the world of acoustic measuring and noise measuring equipment, and one of the very first questions I found myself asking was “what’s the difference between a sound level meter and a noise dosimeter?” Thankfully, the distinction is relatively simple and a complete novice like me can get to grips with it. So if you’re looking to Read More…

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…

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…

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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