//www.soldathq.com/blog Fri, 18 Feb 2022 13:27:55 +0000 en-GB hourly 1 74954989 //www.soldathq.com/blog/2020/03/calculation-of-dba-from-octave-band-sound-pressure-levels/ Jaymee-lee Tolliday 星期四,2020年3月19日11:00:17 + 0000 FAQs Noise Measurement Technical Papers //www.soldathq.com/blog/?p=2416 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. 2416 //www.soldathq.com/blog/2018/04/what-is-reverberation-time-and-how-it-is-calculated/ Clarke Roberts Thu, 19 Apr 2018 13:58:19 +0000 Noise Measurement Technical Papers //www.soldathq.com/blog/?p=7365 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... 7365 //www.soldathq.com/blog/2012/07/iec-61672-a-standard-for-sound-level-meters-in-three-parts/ Clarke Roberts Thu, 26 Jul 2012 09:26:00 +0000 Sound Level Meters Technical Papers IEC 61672 标准 //www.soldathq.com/blog/?p=1874 当前标准声级米,IEC 61672, is published in three parts. Here our explanation of IEC 61672 and what these parts mean for sound level meters. The first part, Part 1, details the performance characteristics that a Class 1 or Class 2 sound level meter should have. Part 2 is used by test laboratories, such as the Read More... 1874 //www.soldathq.com/blog/2011/11/influences-of-weather-damage-and-ageing-on-the-performance-of-outdoor-microphone-windshields/ Clarke Roberts Wed, 30 Nov 2011 16:24:17 +0000 Environmental Noise Noise Measurement Technical Papers cirrus microphone outdoor technical apaper weather windshield //www.soldathq.com/blog/?p=1215 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... 1215 //www.soldathq.com/blog/2011/11/noise-induced-hearing-loss-an-introduction/ Clarke Roberts Mon, 14 Nov 2011 14:01:04 +0000 Noise Measurement Technical Papers cirrus H+NIHL Hearing damage HearingDirect NIHL noise //www.soldathq.com/blog/?p=1126 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... 1126 //www.soldathq.com/blog/2011/09/why-do-instrument-standards-have-different-dates/ Clarke Roberts Mon, 12 Sep 2011 10:56:28 +0000 FAQs 支持 Technical Papers BS BS EN BS EN 61672 EN IEC IEC 61672 标准 //www.soldathq.com/blog/?p=929 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... 929 //www.soldathq.com/blog/2011/04/why-do-i-need-to-calibrate-my-noise-measurement-instruments/ Clarke Roberts Tue, 26 Apr 2011 09:46:18 +0000 FAQs 支持 Technical Papers calibration cirrus heatlh information measurement noise optimus safety sound level meter //www.soldathq.com/blog/?p=299 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... 299 //www.soldathq.com/blog/2011/03/din-en-15947-4/ Clarke Roberts Fri, 18 Mar 2011 12:38:13 +0000 News & Press Releases Technical Papers dresden germany optimus pyrotechnische //www.soldathq.com/blog/?p=501 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. Neben anderen Größen, wie z.B. Brennrate, muss auch Schall gemessen werden. Die Norm schreibt unter Punkt 5.17 einen Schallpegelmesser, Read More... 501