Perceptual evaluation of simulated and real acoustic scenes with different acoustic level of detail

Stefan Fichna, Christoph Kirsch, Bernhard U. Seeber, Stephan D. Ewert

Research output: Contribution to journalConference articlepeer-review

3 Scopus citations


The creation and simulation of ecologically valid acoustic environments is becoming an integral task in virtual acoustics. Such environments enable simulation of realistic daily-life situations under laboratory conditions in hearing research and audiology. Regarding the underlying room acoustics simulation, it is unclear which acoustic level of detail is required to capture the perceptually relevant effects. In this study, different levels of detail in the acoustic simulation of three diverse environments, a typical living room with a connected kitchen, a pub, and an underground station were examined. In each environment, an acoustic scene relevant for hearing research and audiology was tested. In the room acoustics simulation, the level of detail in the geometrical acoustics-based simulation of early reflections, the inclusion of diffusely reflected energy, and simplified rendering of late reverberation were varied, including conditions were only the direct sound was presented. Using synthetic binaural room impulse responses and dummy-head recordings from the corresponding real environments, speech intelligibility was examined with a matrix sentence test and an additional interferer in the scene. Spatial audio quality was evaluated using a pulse with a pink spectrum, a music sample, and a speech signal. Differences observed for speech intelligibility and audio quality are compared.

Original languageEnglish
JournalProceedings of the International Congress on Acoustics
StatePublished - 2022
Event24th International Congress on Acoustics, ICA 2022 - Gyeongju, Korea, Republic of
Duration: 24 Oct 202228 Oct 2022


  • Room acoustics simulation
  • spatial audio quality
  • virtual acoustic environments


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