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Sound Control in Buildings
Published in Lewis H. Bell, Douglas H. Bell, Industrial Noise Control, 2017
Lewis H. Bell, Douglas H. Bell
Probably no aspect of acoustical engineering touches the lives of more people than sound control in buildings. The practice of sound control in buildings began in the early 1900s with the concern for good listening conditions in churches, theaters, concert halls, auditoriums, etc. Further, additional impetus was added with emphasis on privacy and quiet conditions for apartments, offices, restaurants, commercial buildings, etc. Concurrently, the rapid growth of air conditioning added additional problems, and the public’s awareness of noise followed naturally.
Acoustics and acoustic devices
Published in Michael Talbot-Smith, Audio Engineer's Reference Book, 2012
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A study of human vocal effort in response to the architectural auditory environment
Published in Architectural Science Review, 2020
Pantea Alambeigi, Jane Burry, Sipei Zhao, Eva Cheng
Although several objective and subjective studies of early reflections demonstrated the significant effects of a reflective design on the listener, no comparable experiment has been performed to investigate the influence of early reflections on the speaker or the consequent effect on their vocal effort as a self-listener in a face-to-face conversation. Further, the role of the speaker as a second-listener in the room has received less attention compared to the primary listener. The focus of this study can be restated in detail to explore the effects of increasing speech intelligibility of a room- by increasing early reflections- on decreasing vocal effort of a speaker and therefore increasing speech privacy. Acknowledging the negative relationship between speech intelligibility and speech privacy within a single space, this research studies the direct relationship between the speech intelligibility of a small semi-enclosed space and the speech privacy of the surrounding larger space. In other words, this paper investigates whether more speech intelligibility in a semi-enclosed meeting area will lead to greater speech privacy in the surrounded open plan office. With the numerous acoustical engineering attempts to understand the behaviour and significance of early reflections, it is the time to examine the efficacy of an architectural design with sound scattering-pattern in providing more speech privacy and less distraction and to explore the interaction between human auditory perception and the built environment. This study seeks to find the efficacy of a pod’s design with scattering characteristics in reducing users’ vocal effort by increasing speech intelligibility, and thus increasing speech privacy of the open plan office.