We often get asked whether it’s possible to calculate the overall dB(A) value from a set of 1:1 octave band value. The short answer is yes, but there are a few things to consider, in terms of how the data has been measured and what it is being compared to.
One of the most common questions we get asked is about reverberation time. So, we thought we’d provide an answer! 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, Read More…
The current standard for sound level meters, IEC 61672, is published in three parts. Here our explanation of IEC 61672 and what these parts mean for sound level meters.
Windshields fitted to outdoor measuring microphones serve a dual purpose – to reduce wind-generated noise, and to protect the delicate microphone from damage by environmental factors such as rain, ice and dust. However, the presence of a windshield inevitably affects the directional and frequency responses of the measuring system. This paper presents results of measurements on the directional and frequency Read More…
There are over an estimated 9 million hard of hearing individuals in the UK (source: Action On Hearing Loss (RNID), 2005 survey). The overwhelming reasons for hearing loss are listed as being age-related and noise-related, very much in-line with other Western world countries. The big difference is that while age-related hearing loss is a natural process that we can do Read More…
I’ve been asked recently to confirm if a sound level meter is marked as meeting IEC 61672-1:2002, does it also meet BS EN 61672-1:2003? Instruments such as sound level meters are designed to meet certain standards and these are published by a range of International, Regional and National standards organisations. In the case of sound level meters, the standards that Read More…
If you are using your noise measurement instrument to meet any Standards, Regulations or Guidelines it is essential that your equipment is measuring accurately. If you are working to the Noise at Work Regulations 2005, or any ISO or BS EN standard that requires the use of noise measurement equipment, the standards to which the equipment must comply will be Read More…
Prüfverfahren für pyrotechnische Gegestände DIN EN 15947-4:2010 seit Dezember in Kraft Die Einhaltung der DIN EN 15947-4 zur Prüfung von pyrotechnischen Gegenständen wird aktuell schärfer Kontrolliert. In dieser 40-seitigen Norm ist das Prüfverfahren für Feuerwerkskörper Kategorien 1, 2 und 3 beschreieben. Expand your Noise Knowledge!Signup to the NoiseNews blog for the latest article updates straight to your inbox. Email Send Read More…
