UKAN SIG-VA Vibro-Acoustics Masterclass Webinar 1 – Receiver Structures. Prediction & Measurement
781 بار بازدید -
4 سال پیش
-
Video from UKAN SIG-VA Vibro-Acoustics
Video from UKAN SIG-VA Vibro-Acoustics Masterclass 26, 28, 30 October 2020
About this video
Receiver structures form an essential part of the acoustic envelope in our built environment. The built structures form the receiver which are exposed to many different sources. These can range from airborne, e.g. Traffic noise to structure borne e.g., plant equipment, gyms. The receiver plays an important role in maintaining the vibroacoustics and need to be considered for isolator selections. For structure-borne vibration, the propagation is complex and receiver mobility must be measured to make meaningful vibroacoustic predictions. Often, within the building acoustics industry, such measurements may be difficult due to logistical, instrumentation or background limitations. In such cases, one may use infinite plate and beam mobility expressions for heavyweight (e.g. concrete/masonry) and lightweight (e.g. studwall) type receivers forming majority of built structures. These expressions are useful as a first pass estimate when detailed modelling or in-situ measurements may not be possible. Using infinite receiver characteristics with source and any isolator data allows to make vibroacoustic predictions and isolator selections. Literature shows that such predictions are generally in line with measured mobilities within an accuracy range acceptable within building acoustics domain. The presentation covers these predictive approaches and some measurement considerations. Some real life measurement case studies are also presented to illustrate how infinite receiver mobilities align against measured mobilities.
About the course
This is a one-day course funded by the UK Acoustics Network on the underlying principles, recent developments and practical applications in structure-borne sound generation and propagation. Whilst the emphasis is on building acoustics, applications to vehicles, white goods and aircraft are included. The course focuses on demonstrations of practical measurements and simplified calculations of the active source quantities, and passive source and receiver quantities, required for estimates of structure-borne power into supporting structures. This power is required for estimates of the radiated sound in spaces remote from the spaces containing the sources. The course is primarily for practitioners, but is relevant to researchers seeking an introduction to this topic.
About this video
Receiver structures form an essential part of the acoustic envelope in our built environment. The built structures form the receiver which are exposed to many different sources. These can range from airborne, e.g. Traffic noise to structure borne e.g., plant equipment, gyms. The receiver plays an important role in maintaining the vibroacoustics and need to be considered for isolator selections. For structure-borne vibration, the propagation is complex and receiver mobility must be measured to make meaningful vibroacoustic predictions. Often, within the building acoustics industry, such measurements may be difficult due to logistical, instrumentation or background limitations. In such cases, one may use infinite plate and beam mobility expressions for heavyweight (e.g. concrete/masonry) and lightweight (e.g. studwall) type receivers forming majority of built structures. These expressions are useful as a first pass estimate when detailed modelling or in-situ measurements may not be possible. Using infinite receiver characteristics with source and any isolator data allows to make vibroacoustic predictions and isolator selections. Literature shows that such predictions are generally in line with measured mobilities within an accuracy range acceptable within building acoustics domain. The presentation covers these predictive approaches and some measurement considerations. Some real life measurement case studies are also presented to illustrate how infinite receiver mobilities align against measured mobilities.
About the course
This is a one-day course funded by the UK Acoustics Network on the underlying principles, recent developments and practical applications in structure-borne sound generation and propagation. Whilst the emphasis is on building acoustics, applications to vehicles, white goods and aircraft are included. The course focuses on demonstrations of practical measurements and simplified calculations of the active source quantities, and passive source and receiver quantities, required for estimates of structure-borne power into supporting structures. This power is required for estimates of the radiated sound in spaces remote from the spaces containing the sources. The course is primarily for practitioners, but is relevant to researchers seeking an introduction to this topic.
4 سال پیش
در تاریخ 1399/11/14 منتشر شده
است.
781
بـار بازدید شده