Abstract
The low‐frequency sound field in nonrectangular enclosures was examined by using the finite element method. Five rooms were examined; one of which was rectangular and was used as a benchmark for comparison. The other four rooms were perturbations of the Louden room. Progressively complicated changes were made in order to assess the effect on the low‐frequency sampling statistics of a change in boundary shape. All of the rooms had parallel floors and ceilings to represent a real life constraint. The source and receiver averaged response fluctuation statistics for the three lowest one‐third octave bands defined in the narrow‐band qualification standard (ISO‐3742) were computed for each room. Further, the receiver averaged response was calculated in order to determine the effect of source position. The statistics were tabulated for twelve source positions in each room for each one‐third octave band considered. The results of this study show that the low‐frequency sampling statistics of rectangular reverberation chambers can be improved by relatively simple boundary modifications.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
