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.
What are First Octave and Third Octave Band Filters?
Archive | Noise Measurement
Download our new eBook – Top 10 Blog Posts on Noise Measurement
Our new eBook “Q&A – The top 10 posts on our blog” is now available for download. Throughout 2011 we’ve been posting information and answers to questions from our customers, distributors and sales team on our blog at cirrusresearch.co.uk/blog. This book contains the top 10 posts that you, our customers, have been reading and commenting on. Some of the posts have Read More…
What is a Class 1 Sound Level Meter?
A Class 1 Sound Level Meter is a noise measurement instrument that meets the requirements of IEC 61672-1:2002 (or an equivalent such as BS EN 61672-1:2003) to Class 1 performance. Tolerances & Accuracy This standard specifies two levels of performance, Class 1 and Class 2, with Class 1 being effectively more accurate. Within the standard are a set of performance criteria Read More…
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? Expand your Noise Knowledge!Signup to the NoiseNews blog for the latest article updates straight to your inbox. Email Send Message
You need a sound level meter, but what for?
In my 10 years experience as an Export Sales Manager, I am often approached for a Sound level meter with little additional information as to the intended use of the instrument. Sound level meters come in a range of different configurations which lend themselves to different applications. When enquiring to purchase a sound level meter the most important piece of Read More…
What is the Difference Between Class and Type for Sound Level Meters?
The sound level meters and noise dosemeters that Cirrus manufactures are designed to meet the performance criteria laid down in various standards. For example, the optimus sound level meters are designed to meet the requirements of BS EN 61672-1:2003 which is also known as IEC 61672-1:2002. Within these standards there are many different performance criteria that the instrument must meet Read More…
Where can I get advice about noise measurement instruments?
This may sound like an odd question, especially when you consider what we do at Cirrus!. The obvious answer would be to say “Cirrus” and that’s what I’m going to say. Ask us and we’ll be pleased to help. Over the course of our history (which goes back 40 years!), we’ve gathered a wealth of knowledge, information and advice about Read More…
Top 10 reasons why repeating a noise measurement could give different results
Hereâs a post from Gill Cussons, one of our UK Business Development Managers. Gill has been working with our UK customers for a few years and has come across such a wide range of questions that sheâs put together an answer to a common one. So over Gill. Your sound level meter is a precision instrument and as long as Read More…
What do you need to measure for the Noise at Work Regulations?
When making measurements to estimate the noise exposure of a person at work, you need to ascertain the equivalent continuous A-weighted sound pressure level (LAeq) that represents the noise the person is exposed to during the working day. You also need to ascertain the maximum C-weighted peak sound pressure level or levels to which the person is exposed. The action Read More…
Why Do You Need a Windshield on a Sound Level Meter?
A windshield is a very useful part of your noise measurement equipment and there are several reasons why you should use a windshield when you are making noise measurements. Reduce the effects of wind & air movement across the microphone Protect the microphone from damage Keep the microphone capsule clean Expand your Noise Knowledge!Signup to the NoiseNews blog for the Read More…
