Product category:
Acoustics, Noise and Vibration Control
News Release from: Bruel and Kjaer UK | Subject: Changes For Building Acoustics Measurement Systems
Edited by the Buildingtalk Editorial
Team on 31 October 2003
Changes For Building Acoustics
Measurement Systems
Exciting Changes For Building Acoustics Measurement Systems From Bruel and Kjaer
Over the past few months there have a been a number of exciting new developments, additional options and price revisions to the Bruel and Kjaer range of Building Acoustics Measurement Systems, all of which have been introduced to meet the growing needs of organisations actively involved in the measurement of building acoustic criteria This brief synopsis summarises some of the latest developments
This article was originally published on Buildingtalk on 23 Jun 2008 at 8.00am (UK)
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Immediate on-screen analysis of sound insulation, using Bruel and Kjaer's new BZ-7228 building acoustics software, means that problem partitions can now be quickly identified on site.
The 2260 based sound insulation measurement system now includes the option of a 31 band graphic equaliser for spectrum shaping the source room signal.
Although Bruel and Kjaer 4296 omni-directional speaker has an excellent flat response in anechoic conditions, unusual room geometries can sometimes result in a far from flat source spectrum.
The graphic equaliser unit can therefore be used to address this as outlined in BS EN ISO 140, whilst also offering up to 12dB gain in each third octave to lift the source room signal clear of any extraneous background noise.
Further reading
Bruel and Kjaer safe Noise Dose meters
Comprehensive noise exposure measurements, within potentially explosive environments, are easily achieved with Bruel and Kjaer's 'intrinsically safe' version of it's noise dose meter - Type 4445E.
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Reduce time and money spent investigating the existence of elusive tonal noises with sound and vibration expert, Bruel and Kjaer's new tone assessment tool.
Bruel and Kjaer un-PC domestic noise monitors
Bruel and Kjaer UK launched a 'PC-less' version of its domestic noise monitoring systems, MATRON-3 and MATRON-Light, to help local authorities avoid the resources drain of IT support.
With wood and laminate flooring a very popular floor option currently, impact sound insulation measurements are increasingly required to assess the performance of potentially noisy floor surfaces.
Therefore, the introduction of a reduced price for the slimmer and subsequently more popular 3207 Tapping Machine will come as welcome news.
This makes the Bruel and Kjaer tapping machine an affordable addition to a standard sound insulation measurement system.
The 3207, also has the option of remote control and integral re-chargeable battery offering 11/2 hours continuous operation.
Qualifier the PC package for archiving, analysing and documenting measurement results from the 2260 Building Acoustics System has also been reduced in price offering tremendous value for money.
Qualifier is widely used to document an assessment with details of the client, the type of structure, the measurement operator etc Results are presented in a spreadsheet style and also in a range of graphical formats all of which can be chosen from one of a number of predefined templates including the standard BS EN ISO 140 format, or can be customised to suit.
In some situations, a powerful cabinet speaker (118dB Sound Power) with integral battery with capacity for up to 4 hours operation may be the preferred option.
In which case, the ever-popular Type 4224 Sound Source would more than fit the bill.
The 4224 has noise generation built-in, external control from 2260 and weighs 18kg.
SoundEar simply detects unwanted noise, with its simple red, amber, green colour display.
It can: * Warn about uncomfortably high noise levels (eg 60dB in an office) * Teach people, including children to keep the noise levels low for the benefit of all (eg in the classroom) * Warn of harmful noise level (eg in excess of 85dB in a working environment) Classifier 7842 is a multi-channel PC based package for the laboratory measurement of building acoustics criteria using Bruel and Kjaer's popular PULSE analyser platform.
Complete tasks are made quickly and easily in accordance with national and international standards including automatic certificate generation * Airborne Sound Insulation * Impact Sound Insulation * Absorption Coefficient * Sound Power * Supporting techniques such as MLS, rotating microphone booms and sound intensity.
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