The January Acoustics Bulletin, published by the Institute
of Acoustics, featured a study authored by Professor Peter Mapp into the
acoustic and communication effects of face masks. The study carried out in
Peter’s own electroacoustics laboratory during lock down, measured the sound
transmission properties of over 20 facemasks and found some surprising effects.
Clear masks and masks with clear panels, specifically designed to aid lip
reading, essential for the deaf and hard of hearing, were ironically found to
attenuate and distort speech the most.
Peter is now continuing the research and looking at both mechanical and
electroacoustic methods of improving speech transmission and has received
interest from several national hearing charities.
Thursday, 28 January 2021
Article published on the effect on speech intelligibility of face masks
Monday, 25 January 2021
Testing a new IoT Environmental Noise Meter
Environmental Sensors Ltd have kindly offered a new Internet of Things based Convergent Instruments sound level meter for testing. The microphone which is based on MEMS technology make this environmental meter a much cheaper solution than traditional sound meters. Current tests show the meter calibrates well, has good frequency response (using 24 kHz sampling) and has a noise floor of 32 dBA. More tests to come!
Abstract accepted for 27th ICSV July 2021
Friday, 22 January 2021
Dr Gomez-Agustina becomes external examiner for the MSc in Applied Acoustics at the University of Derby
IOA ECG webinar series - Further education in the time of a pandemic
New IOA award named after the late Dr Bob Peters
Wednesday, 20 January 2021
Best 2019-20 IOA Diploma Final project at LSBU announced
At the IOA London Branch meeting held online on 20th January, the three best IOA Diploma final student projects undertaken at LSBU were presented as part of the annual NTI-Audio sponsored best LSBU Diploma final project award competition. Rory Hendrick presented on Vibration in Fibre Reinforced Concrete Composite, Courtney Hawkins on Weather conditions in building acoustics design and James Allen presented his work on Aircrew helmets hearing protection. NTI-Audio Managing director Charles Greene and Diploma course director Dr Luis Gomez-Agustina presented the award to the winner: Rory Hendrick. Many congratulations to Rory and to the other two finalists. We wish you all the best for the future
Tuesday, 12 January 2021
The Quiet Project starts monitoring Lockdown 3
Lockdown 3 has started, and as such the Quiet Project is monitoring the change in environmental noise. From 11th January 2021 monitoring stations have been erected around the country. Again I have to thank Campbell Associates for their kind assistance with the instrumentation. Let's see the effect of the slight difference in policy between Lockdowns.