Room acoustics

Get an offer

Demo version

Overview of CadnaR for room acoustics

CadnaR provides powerful tools to efficiently manage any scenario, guiding you through the setup of your acoustic model and the assignment of appropriate absorption, scattering, and transmission properties. 

Whether optimizing an open-space office for a productive work environment or ensuring excellent speech intelligibility in a lecture hall, CadnaR enables you to assess acoustic quality using industry standards and advanced evaluation methods.

Key features of CadnaR include:

  • Cutting-edge calculation methods: particle model, image source model, hybrid model and more. Fast calculation times thanks to innovative technologies such the support of NVIDIA’s CUDA API.

  • Import and input of obstacle objects including barriers, box-type obstacles and polymeshes to allow any kind of complex room shape. Easy definition of the acoustic properties such as absorption, transmission and scattering.

  • Easy import of room geometries via DWG, DXF, SketchUp, IFC and from CadnaR.scan App.

  • Automatic calibration of absorption and scattering coefficients to achieve user-defined or measured target reverberation times.

  • Import your speakers in CadnaR, find their optimal position and alignment, calculate reverberation time, signal level, background noise levels and speech transmission index STI to ensure that these messages are intelligible in large public rooms.

  • Acoustic assessment of open-plan offices based on speech levels and reverberation time according to DIN 18041, ISO 3382-3 and VDI 2569 as well as innovative intelligibility-based approaches such as the STI-Matrix.

  • Extensive possibilities for project organization with the Object Tree and the use of variants. This allows to handle and compare different planning scenarios and therefore allows to find a tailored acoustic concept to improve the situation in your specific project.

  • Calculation of psychoacoustic parameters such reverberation time (T10, T20, T30), Speech Transmission Index (STI) and many more. Cutting edge auralisation techniques, including the effect of several sources at each receiver position. 

Arrangement of speakers in an airport waiting area, showing their directivity (imported in CLF format) and orientation.
Several variants can be easily created and managed within CadnaR. This is achieved by assigning objects to specific groups of the ObjectTree. These Object Tree groups are then declared to be active or inactive for the different variants. The effects of the acustic measures on the speech level distribution are clearly visible when the variant is changed.
CadnaR allows for to model any oblique surfaces, arcs, semispherical areas of the ceiling or zigzag shaped parts of the roof. In this example, the dome has been imported as ASCII points. It is possible to convert all points directly into a polymesh. The particle animation shows that the dome behaves correctly.
Auralisation dialog. Here, two different scenarios (hall with back absorbers versus hall with baffles) are compared at the receiver position M2. The auralisation dialog allows to quickly calculate and check how both solutions would sound like.
Animated map of the Speech Transmission Index (STI) for a speaking person walking through the office. The distraction area is colored in red.
The automated generation of tables and diagrams is a great help in order to quickly check (at each receiver or spatially averaged) all relevant parameters. Here, different solution proposals are compared by using echogram diagrams and reverberation time comparison.

Room acoustic applications of CadnaR

Assessment in open-plan offices
Acoustic comfort in restaurants
Configuration of privacy areas
Acoustics in lecture and multi-purpose halls
Optimization of intelligibility in working environments
Intelligibility of messaging systems in public areas
Analysis and auralisation of multiple sources at the same receiver position
Assessment of permanent or temporary acoustic measures to optimize acoustic quality.

Informationen über CadnaR

CadnaR software can be functionally expanded with several options which allow to increase the functionality handling and performance of CadnaR depending on the field of application. Refer to the scope of performance document for detailed information.

CadnaR

  • Particle model and image source model

  • Import of text files (ASCII format), IFC, CLF, SketchUp and from CadnaR.scan App

  • Available options to extend the functionality: CAL, VIS, ORG, AUDIO, OFFICE, T

CadnaR options

  • CAL: additional calculation methods and source types

  • VIS: extended visualization of calculation results in 3D, particle animation, video recording.

  • ORG: Tools to efficiently organize and compare scenarios within a single file

  • AUDIO: calculation of energetic impulse responses, echograms, reverberation time (T10, T20, T30), Speech Transmission Index (STI) and further parameters.

Scope of Performance

CadnaR Options

More about CadnaR.scan app