In
recent years the prediction and control of far field noise
immission from live open air events has become a
serious topic. Gaining permission and licensing to stage such productions often
requires an official statement, predicting how the noise will impact on
surrounding areas. The introduction of the far field
noise immission modelling software, d&b NoizCalc, addresses this issue,
taking the d&b promise of predictable, precise performance another step
further.
NoizCalc models the sound propagation of coherently emitting complex sources
such as line arrays and subwoofer arrays from multiple stages in the regions
outside of the audience listening area and applies the results onto a 3D
terrain map. This PC based software predicts the
calculated far field impact of a d&b
loudspeaker setup in the open air, by applying the
ISO 9613-2 and Nord 2000 standards. Using meteorological and
geographical data, NoizCalc details the environmental propagation and relative
attenuation values towards the far field at a defined spectrum and level
reference.
NoizCalc is the result of the collaborative efforts of d&b
audiotechnik and noise
consulting and software development experts SoundPLAN
GmbH. SoundPLANnoise
applies an extended range of accredited worldwide standards along comprehensive
reporting tools to satisfy the need for an official noise immission statement.
The next version the software is able to import d&b system setups from
ArrayCalc.
Both
NoizCalc and SoundPLANnoise import d&b ArrayCalc simulation software project
files, including complex data describing the relationships between sources and
their combined performance, allowing loudspeaker systems to be virtually
situated and oriented within 3D terrain models for realistic prediction.
Werner “Vier” Bayer, d&b Product Manager
said: “Our collaboration with SoundPLAN comes at a time when
noise immission is becoming a major consideration in the planning of outdoor
events. This free d&b software will enable system
designers to investigate how their setup will impact on the wider area by modelling
immission patterns ahead of time. NoizCalc forms the basis for a common
understanding between those who create emissions: the loudspeaker system
designers and technicians and the environmental noise and immission
specialists, who consider the impact on the wider ecology.“
