Fraunhofer Institute for Building Physics IBP
Fraunhofer Institute for Building Physics IBP

reververate® – Web app for Room Acoustics Planning

Acoustic Optimization with reverberate®

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reverberate® was developed to support the acoustic design of spaces such as sports halls, classrooms, offices, and apartments. Whether you are an architect, engineer, or simply curious, reverberate® allows you to quickly and easily calculate reverberation time online and compare it with the required values according to DIN 18041 and ASR A3.7 based on a new calculation model by Zhou et al. (2021).

Optimize your room acoustics planning with the following features:

User-friendly interface

Design the geometries of your room easily via an intuitive user interface. Simply enter the room dimensions and select the requirements according to DIN 18041 or ASR A3.7.

Precise calculations

Based on your inputs, reverberate® precisely calculates the reverberation time in the room and displays results in comparison with the ranges required by the selected standard or guideline.

Comprehensive materials database

Each surface in the room can be subdivided and equipped with sound-absorbing materials. Choose from an extensive database of acoustically effective materials or enter your own values.

Iterative optimization

If the calculated reverberation times do not meet requirements, adjust the acoustics step by step until the requirements are met. Save different variants and revisit intermediate results at any time.

Scientifically validated results

reverberate® uses a scientifically validated calculation model, ensuring that the acoustic design corresponds closely to the actual reverberation times. This prevents costly post-construction corrections.

Export function

Export calculation results as a PDF file and download them to document your calculation. The documentation includes the calculation results and detailed information about your inputs. This provides you with a complete documentation of your project. Data are stored securely in the cloud and can be accessed at any time. This data can also serve as a basis for calculating future variants of your project.

Auralization

Listen to the acoustic outcome of your calculation. The high-quality auralization provides an impression of reverberance and room acoustics, accounting for frequency-dependent reverberation times. Audio files can be saved and presented to clients.

New functions

Life cycle assessment (LCA) of the room acoustics calculation. When using materials with LCA data stored in the database, reverberate® displays the carbon footprint (kg CO₂-equivalents) of the selected acoustic solution, along with a full life cycle analysis. Materials with LCA data are continuously updated to further expand this functionality in the future.

The Science Behind reverberate®

Unlike other software solutions, which often only use the simple Sabine formula, reverberate® takes into account both the absorption distribution and the scattering coefficients of the room surfaces.

The sound field is divided into three spatial directions and the diffuse field. Taking into account the acoustic properties of all surfaces, frequency-dependent decay curves are calculated and added for all subsystems. The reverberation times based on this approach are significantly more reliable and realistic, eliminating the need for costly simulations.

All reverberate® calculation methods have been developed in scientific studies and validated by measurements. The underlying theory was published in a peer-reviewed article in Applied Acoustics. With reverberate®, this calculation method is made accessible for practical use. The traditional calculation of reverberation time according to Sabine is also provided in reverberate® for comparison.

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