Can Historic Interiors with Large Cubature be Turned Acoustically Correct?

Abstract

Historic interiors with large cubature, such as reception, theatrical, and concert halls, need to be renovated periodically if they are to be preserved as cultural heritage for future generations. In such cases it is necessary to maintain appropriate balance between requirements imposed by heritage conservation authorities office which are usually being given a higher priority, applicable safety regulations, and the comfort of use, including good acoustics.The paper is a presentation of architectural interference in three historic interiors with large cubature leading to changes in their acoustic qualities. In two cases, the changes were beneficial to the functional qualities of the halls to satisfaction of the investors carrying out the renovation work. In the third instance, the architectural interference aimed at showing off the monumental valor of the interior resulted in significant degradation of its acoustics. To remedy the situation impairing the functional program of the facility, corrective measures are proposed neutral with respect to its historic character.

The influence of the distribution of sound absorbing materials on the estimation of reverberation time in rooms

“…Reverberation time plays a significant role in the design of school rooms [1], sacral rooms [2][3][4], auditoriums [5], theaters and concert halls [6], open-plan spaces [7], or others. This parameter has been investigated in many different works, a few of them mentioned below in the last years [8][9][10].…”

Archives of Acoustics

“…One of the main aims of room acoustics is to describe acoustical field. Both geometry of the room and the sound absorption of walls determine the acoustic phenomena (Kuttruff, 2000;Pilch, Kamisiński, 2011;Rubacha et al, 2012;Kamisiński, 2012;Kamisiński et al, 2016).…”

“…Three approaches to room acoustics modeling are distinguished: image source methods (ISM) (based on the geometrical theory of the diffraction), acoustics energy methods (AEM) (Meissner, 2013) and wave-based methods (WBM) (Meissner, 2009;2016b;Kamisiński et al, 2016;Siltanen, 2010). Each approach has advantages and disadvantages and different approaches have some links between them (Rindel, 2010).…”

Research and modification of sound diffusers using wood waste charcoal

“…Due to its simple physical interpretation, the scattering coefficient s is used in addition to the sound absorption coefficient in software designed to predict the acoustic properties of interiors. Kamisiński et al (2015) presented a new solution for a noise barrier, consisting of dissipative elements and weather resistance, but also characterised by sound absorption (Kamisiński et al, 2015). The construction is designed to reduce and scatter sound.…”

“…Scattering coefficient measurements are most effective for materials and structures with low sound absorption coefficients. (Kamisiński et al, 2015) The panel was made using plastic extrusion technology with the addition of wood dust. It has two surfaces that differ in terms of some acoustic parameters, allowing it to adapt the designed acoustic screen to specific needs.…”