By taking into account edge diffractions & finite surface size reflections using spherical wave angle depended extended reacting surfaces impedance to get complex pressures, the non-diffused field room response is calculated. Room Modes: An additional phenomenon which the wave based nature of OTL-Suite’s calculation engine allows for, is the calculation of room resonances.
Surface & Structures Directivity: Use the Polar Plotter to visualize the directional properties of different surfaces and structures, for example predicting the effect of overhead canopies or reflectors in rooms dedicated for music and/or speech. Scattering and Edge Diffraction: Due to the wave based nature of OTL-Suite’s calculation engine, scattering and edge diffraction phenomena, including the difficult to calculate seat-dip effect in theatres, can be explicitly calculated without resorting to simplified models. If an Impulse Response is calculated, the calculated transfer function can be listened to as a Binaural Auralisation. Loudspeaker Directivity: OTL-Suite v4 is capable of taking into account the directivity of loudspeakers by importing standard CLF files. Since OTL-Suite covers an extended frequency range from 0 to 100 kHz at any resolution down to 0.001 Hz the low frequency range responsible for most of entertainment noise, can easily be analysed. Such modelling greatly assists both concert organizers and local authorities alike in assessing the impact of loud sound events. Open Music Venues & Public Nuisance: Atmospheric Refraction coupled with Source directivity can calculate and assess the effects of sound propagation from open venues such as stadiums, to communities not just nearby but located kilometres away, without the need for additional software.
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