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Ears Project News - WS Berlin CK (257.79 kb) Workshop: "Metrology for the perception of non-audible sound". From 16th to 17th of April participants from 6 different countries met to discuss the results of the project EARS and to show own contributions in talks and on posters. Three invited talks and two round table discussions gave an ample possibility for scientific exchange among the 33 participants. Report on Teddington Workshop (567.44 kb) The cornerstone of the dissemination activities in the EARS project are two workshops covering distinct aspects of the project scope, on the development of the universal ear simulator, and on the perception of non-audible sound. The first of these took place at the National Physical Laboratory on 26th March 2015 and covered the development of the universal ear simulator. The workshop had 28 attendees from clinical audiology, medical physics, national health services, audiological equipment manufacturers, calibration laboratories and NMIs outside of the consortium. Attendees came from UK, Denmark, Germany and Switzerland. Ears-Workshop leaflet (824.09 kb) The workshops will give the opportunity to share the final results of the project and to discuss all related issues of the topics In round table discussions new concepts shall be discussed and possible future collaborations initiated. Keynote speakers from scientific research and industry will highlight various aspects of each topic. Furthermore there will be the possibility for attendees to present a poster or a 5-minute talk. Flyer_WSBerlin_6page_print (703.33 kb) This is the flyer for the Berlin Workshop on non-audible sound in April 2015. Version with printing marks. Flyer_WSBerlin_1page_view (426.15 kb) This is the one-page handout for the Berlin Workshop on non-audible sound in April 2015 for easy printing. Flyer_WSBerlin_1page_print (359.4 kb) This is the one-page handout for the Berlin Workshop on non-audible sound in April 2015 for easy printing. Version with printing marks. Flyer WSLondon 6page print (985.37 kb) This is the flyer for the London Workshop on universal ear simulator in March 2015. Version with printing marks. Flyer WSLondon 1page view (618.22 kb) This is the one-page handout for the London Workshop on universal ear simulator in March 2015 for easy printing. Flyer WSLondon 1page print (459.58 kb) This is the one-page handout for the London Workshop on universal ear simulator in March 2015 for easy printing. Version with printing marks.
EARS Project Newsletter No 6 Jan 2015 (779.21 kb) The EARS project arrives at its final stage and we are pleased to present the sixth newsletter to you. Another time the project work has made serious progress and results were obtained which significantly promote knowledge and technology in the addressed fields. We invite you to read about several aspects of the work which are presented within this newsletter. Following an intensive development phase ultrasonic transducers which allowed the determination of hearing thresholds for airborne ultrasound could be produced. In parallel the investigation of perception mechanisms at infrasound frequencies continued with an fMRI study. This process was accompanied by measuring the middle ear transfer of the same test persons using otoacoustic emissions. The second version of the universal ear simulator prototype was manufactured and calibration techniques were developed and tested. Thus, all prerequisites for first clinical trials, which are under way, have been created. Ears Project Newsletter No. 5 July 2014 (408.67 kb) The project work has continued and made serious progress in different parts of the work. The first study about the determination of brain response to infrasound signals was carried out. For an acoustic assessment of infrasound noise, equal loudness contours for this frequency range were determined. The first prototype of the new universal ear simulator is available now and the development of calibration methods is currently under way. Ears Project Newsletter No. 4 January 2014 (544.02 kb) The 4th Newsletter reports on the progress made in several work packages. The newly developed infrasound source was successfully applied to the determination of hearing thresholds in the frequency range between 1 and 20 Hz. First measurements for the determination of brain response thresholds in this frequency range were carried out too. The designing phase of the new ear simulator was completed and a challenging proposal was developed which for the first time includes parameters of anatomical structures into the construction. The manufacturing of the first prototype is now under way. Ears Project Newsletter No. 3 July 2013 (533.73 kb) The 3rd Newsletter. This time with interesting articles on the development of a high-output infrasound source, the production and testing of in-ear ultrasound transducers, news on the design of the universal ear simulator and a business card of the Danish National Metrology Institute DFM. Ears Project Newsletter No.2 January 2013 (379.8 kb) This is our 2nd Newsletter with some very first results. Highlights in this issue: New head phantom for MEG measurements, Primary calibration of microphones up to 150 kHz, A non-magnetic ultrasound source using MEMS technology and Specifications of universal ear simulator.
Ears Project Communique non-audible noise (209.89 kb) During the last 3 years the project EARS investigated perception mechanisms of infrasound and airborne ultrasound by the aid of objective methods from audiology and neural imaging to improve the rationale and evidence base for assessing sound exposure within these frequency ranges. This communiqué will summarize most of the important results and conclusions for a presentation to the public. The intention is to contribute to and expand the available knowledge in this field although the project team is well aware of the many tasks and problems and questions still in need of further research. Communique for research (295.46 kb) There are numerous indicators that infrasound and airborne ultrasound emission influences human beings and that sound at such frequencies can be perceived. However at present, the precise mechanisms of sound perception at these frequencies are unknown and this lack in understanding is reflected by the disappointing status of existing regulations, standards and safety. The participants of the workshop Metrology for the perception of non-audible sound held in Berlin from 16 to 17 of April 2015 signed this communiqué. Questionnaire (52.78 kb) Questionnaire on “Requirements on a universal ear-simulator”: Within the framework of the Ears-project a universal ear simulator will be developed, with the aim to improve the relevance of metrology in modern audiological practices. To design the ear simulator that can be used for calibrating all types of earphones typically used for clinical audiological practice and for hearing screening on adults, young and newborn children, we kindly ask for your help. In a very first step of the programme we intend to gather requirements from potential users of the device to be developed. Hence, we would like to ask you to briefly answer the following questions. We appreciate your valuable information, and we would be very glad to receive your reply.
