Contribution
Assessing Low-Frequency and Infrasonic Noise Transmission through German Building Façades
* Presenting author
Abstract:
This paper presents the initial results from a study measuring noise transmission through the façades of real, fully furnished buildings located in Germany, using a modified approach based on the ISO 16283-3 standard. Measurements were conducted using a linearized speaker setup, supplemented by a loudspeaker capable of covering the infrasonic range down to 10 Hz. This approach allows for an extended frequency analysis, focusing particularly on low-frequency sound transmission, which is critical in evaluating building insulation performance. The results highlight variations in sound levels across different frequency ranges, with particular emphasis on the evaluated sound reduction index R, as defined by ISO 16283-3. Rather than pursuing highly controlled laboratory conditions, this study prioritizes a realistic representation of sound insulation variability across typical building structures, thereby offering practical insights into the effectiveness of real-world façade insulation at low frequencies. These results contribute to a broader understanding of sound transmission dynamics in residential buildings, especially in contexts where low-frequency insulation is of particular importance.