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Olive Tree Lab-Suite 4.3, 64-bit version is now available, improving stability during heavy calculations!

11/5/2018

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OTL-Suite goes far beyond the typical acoustical analysis in the fields of
  • environmental acoustics
  • architectural acoustics.
Below are some of its versatile features and the applications they can be used for:

Wind Farm - Atmospheric Refraction: OTL-Suite now includes modelling the effects of Atmospheric Refraction in a non-homogeneous atmosphere due to a temperature gradient and wind profile. Modelling the propagation of sound through such a non-homogeneous atmosphere is one of the most difficult tasks in outdoor acoustics due to the multiple physical phenomena that need to be accounted for such as creeping waves and many others, but it is essential for analysing environments spanning more than 200m - a particular concern to the wind farm industry.

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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. Such modelling greatly assists both concert organizers and local authorities alike in assessing the impact of loud sound events. 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.

Loudspeaker Directivity: OTL-Suite v4 is capable of taking into account the directivity of loudspeakers by importing standard CLF files. If an Impulse Response is calculated, the calculated transfer function can be listened to as a Binaural Auralisation.

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.

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.

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Room Modes: An additional phenomenon which the wave based nature of OTL-Suite’s calculation engine allows for, is the calculation of room resonances. 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.

Multilayered Structure Builder: OTL-Suite is also the first acoustics software to include a Multilayered Structure Builder (MLSB) based on the Transfer Matrix Method to calculate surface impedance, sound absorption coefficients (seen from both sides of the structure) and sound transmission loss of structures. Now, 3D model entities may be assigned either surface impedance or absorption coefficients calculated directly using the MLSB, without resorting to 3rd party software. Once building acoustics functionality is also included in OTL-Suite, model entities will possess sound reduction indices as well. The MLSB currently calculates the following:  
     
  • Sound Reduction Index (10-10kHz) in narrow bands,
  • Rw(C;Ctr) ratings at 100-3150 Hz and 50-5kHz,
  • equivalent statistical absorption coefficients 10-10kHz in narrow bands,
  • ISO 11654 absorption coefficient,
  •  a(w), Class and NRC ratings of the structure
  • integration angles 78 and 90 degrees
  • complex surface impedance of the structures, in narrow bands.

Users can specify unlimited numbers of layers, see results in high resolution in an extended frequency range from 10 Hz to 10kHz, export of values in both high resolution frequency analysis and 1/3 octave analysis, as well as Front-Back, Back-Front performance (in sound absorption and impedance calculations).

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For more information or to download the latest version Trial
Are you going to Euronoise2018? Meet us at Booth 25 together with Infra QSources and Eckel Noise Control Technologies.

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What Our Clients Are Saying

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Paragon Acoustic Consultants had been reviewing different room acoustics software packages to standardise the software used within the practice. Various room acoustic packages were considered, however, a number of the software packages considered proved unfavourable due to limitations of room geometries that can be modelled, limited calculation outputs and general concerns that the software was unnecessarily difficult to use for even straightforward tasks. This practice has reviewed Olive Tree Lab Suite and found the software to be user friendly whilst providing a very high level of functionality. Having rented the software and modelled a number of relatively complex room acoustic projects, we are impressed with the software and in particular the very professional back-up and support provided by P.E. Mediterranean Acoustics R&D. At this stage the modelling functions for outdoor sound have not been used, however, having watched demonstrations by Mediterranean Acoustics via computer link–up the external modelling sections of the software look as impressive as the room acoustics modelling.

John Gillott

Acoustics Consultant
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Paragon Acoustics Consultants, UK

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The OTL Team is a delight to work with. Amazingly responsive to questions and requests, and constantly improving the product. When it comes to software development & support, many should look at this company as a model to follow.

Dominique J. Chéenne

Ph.D.
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 INCE, USA

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I would like to appreciate the team of OTL and Premard in terms of their continued support and efforts. OTL has been such a valuable tool that I keep coming back for more. With the new software OTL 4 Pemard has again made an effective tool for Acousticians worldwide.

Abraham Berin

B. Tech E&MT, M.Sc A&A (UK)
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Head of Acoustics, INFOSIGHT, UAE

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​I have been using the OTL Lab application for a number of years, mainly for teaching and demonstrations at undergraduate and postgraduate courses in acoustics and noise control. The program is user-friendly and incorporates an advanced high-level 3D designer tool for setting up virtual acoustic environments, allowing easy setting up of case studies and extracting results and maps for radiation and transmission for noise and other sources.
I find very useful the advanced physics engine for sound propagation which allows for wave-based simulations (plane or spherical) considering also atmospheric refraction. This enables OTL to achieve accurate results especially in large scale setups encountered in environmental studies. The interface for immediate comparison of analytical results with standardized approximations (ISO standards) or simplified computational methods such as ray tracing and image-source models allows for comprehensive evaluations in multiple levels of physical detail. Such features which have been utilized by the members of our Audio and Acoustic Technology group during research projects.
The support by the OTL team was extremely helpful and their response immediate, tackling queries at personal level and providing educational webinars for the students.

John Mourjopoulos

Professor
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University of Patras

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OTL is an appropriate tool for prediction of acoustic adjustments in room acoustics, outdoor environment and industry. It offers flexibility and an ease of the ability to customize. Thanks for the multi-layered structure for impedance, absorption and SRI prediction.

Toufic Attieh

Technical Manager
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Gresam Acoustic & Vibration Engineering, Lebanon

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Although designed for demanding Acoustics applications, Olive Tree Lab has been instrumental in my research and work. Despite its hugely detailed modeling of acoustic properties, primarily addressed to acousticians, through its intuitive interface, it has also proven invaluable for architectural design. Furthermore, the Mediterranean Acoustics team have vastly exceeded my expectations for 'after sales service' and provided a rare blend of scientific expertise and personal care – giving true meaning to the word 'support'.

Ilias Papageorgiou

Architect
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Greece

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We find OTL very intuitive and the customer service spectacular. Once the model was properly configured, the mapping software predicted very accurately and was within +/-5dB in comparison to actual field measurements.  We were able to provide client documents that were clear and intuitive and allowed them to prove compliance with local and state noise ordinances.

Thomas N. Ryan

Senior Consultant
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Technological Design Studios, LLC.

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Pemard did a fantastic job with our custom software application. Costas and Panagiotis were extremely responsive during the development process and were always helpful in immediately addressing our concerns and fixing issues where we found them. The custom software the team developed for us has been of huge help to our room acoustics design process and we could not have done this without their help. I would recommend Pemard to anyone needing custom acoustics software.

Anonymous

Acoustics Consultants
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USA

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  • Home
  • About
    • Philosophy
    • Events & Training >
      • Past Events
  • Publications
    • Papers & Presentations
    • Research and Validation Projects
  • Acoustics Software & Tools
    • Olive Tree Lab Suite
    • Olive Tree Lab - Room Modes
    • Olive Tree Lab Acoustics Lib
    • SONarchitect
    • AFMG - EASE, SoundFlow, Reflex, Address, Focus, SysTune >
      • EASE - Enhanced Acoustic Simulator for Engineers
      • EASE - SpeakerLab
      • EASE - EVAC Fast Design of Acoustic Evacuation SystemsFast Design of Acoustic Evacuation Systems
      • AFMG SoundFlow - For the acoustic design of multi-layer structures
      • AFMG Reflex - For the design and application of diffusers
      • EASE Address
      • EASE Focus - Universal Sound System Modeling in 3D
      • FIRmaker - Put Your sound Where It Belongs!
      • EASRA - Electronic and Acoustic System Evaluation and Response Analysis
      • SysTune - Professional Audio Measurement
  • What's New
  • Services
  • Downloads
  • Purchase
  • Contact
    • Support