DAGA 2010 - Deutsche Gesellschaft für Akustik eV

44 DAGA 2010 Programm
Mo. 14:55 Gauß B 501 Vorkolloquium Soundscape
New Directions in Soundscape Management
M. Dixon
Independent consultant, London
Soundscape research raises both the need and the opportunity for new
management approaches. This presentation will review some of the
challenges and gaps in regulation and urban management, and explore
possible ways forward. Traditional noise standards and guidelines generally
assume that each source can be considered independently. However,
if one target noise is lowered, a different, possibly more annoying,
sound can become more audible. It is typically cheaper in engineering
terms to reduce high frequency noise than low, so, over time, simple
dB(A)-based vehicle noise certification testing can increase the proportion
of low frequency noise in an environment. What approaches might
minimise this risk, e.g. ’differential sound frequency charging’? The addition
of sound to electric and hybrid vehicles may be mandated on pedestrian
safety grounds, but how might residents cope if anonymous hums
are replaced by more variable mixes of new warning and/or ’trademark’
sounds? How can links with other environmental issues, particularly climate
change, be reinforced? How can new regulatory mechanisms and
incentives drawing on how natural systems behave be developed? What
role can social networking tools and new mapping interfaces play in
enabling greater public participation in soundscape management?
Mo. 15:20 Gauß B 501 Vorkolloquium Soundscape
Modelling Perception of the Sonic Environment as a Tool for Soundscapes
D. Botteldooren
Ghent University, Dep. Information Technology
In soundscape research and design, not only the outer physical environment
but also the inner state of the observer is of importance. This
materializes in strong context dependence of the perception of and meaning
associated to the sonic environment. In order to better understand
this interaction between mental image and physical environment, computational
models are very useful. Over the past couple of years we have
developed ever increasing complex models and tested them against observed
trends. Important aspects of the model such as feature extraction,
sound identification, object formation, sound recognition and attachment
of meaning will be discussed in relationship to soundscape during
the talk. One of the final goals of this modeling effort is also the implementation
of more advanced evaluation and prediction tools that could
be incorporated in measurement equipment or noise mapping efforts.
Illustrations will be given.