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1

Cinema hall adapted for opera singing - acoustic assessment

Sygulska Anna

Vibrations in Physical Systems

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2023

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Vol. 34, nr 1

art. no. 2023115

EN

Room acoustics must be adapted to the intended function, and acoustic requirements vary depending on the type of sound production. Acoustic investigations were carried out in the hall of the Olimpia Academic Music Theater, which was originally a cinema. Acoustic requirements for cinemas are entirely different from those for opera singing. To ensure good acoustic conditions in the interior, an architectural adaptation or introduction of variable acoustics is necessary. The analysed interior was adapted to the needs of opera singing and the cinema function was abandoned. The objective of the research is to evaluate the acoustic quality of the hall for the purposes of an opera house.

2

Atmosphere of the sacred - sonic aspect, acoustic investigations of the contemporary church

Sygulska Anna

Builder

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2023

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R.27, nr 10

38--41

EN

Acoustics are one of the main components that constitute the functionality of the sacred building. Designing a church is a real challenge because the interior must be adapted to various acoustic requirements. However, one must bear in mind that one of the goals to be achieved in a religious interior is to create the sense of the sacred. The aim of this paper is to investigate acoustic conditions in a contemporary Catholic church with a view to determining the sound quality of the interior. Acoustic investigations were conducted in Św. Jerzy Church in Poznań. An ominidirectional sound source, the DIRAC software and the Brüel & Kjær ZE-0948 USB sound card were used. The e-sweep signal was generated and parameters that are referred to in the literature as basic were measured to assess the acoustic properties of the religious interior. The acoustic parameters were then compared to the recommended values. The most important parameter used in the assessment of the sound quality of a sacred interior is reverberation time RT. A lot of contemporary churches exceed its recommended value, the result of which is reverberant noise. The RT value in the investigated church falls within the recommended range but because the interior houses no pipe organ, the value should be lowered. Shorter reverberation time will ensure better speech clarity while the sense of the sacred will be retained. Designing a religious facility should take account of its acoustics as early as at the conceptual stage; one should remember that aural impressions will influence the reception of the acoustics of the interior.

PL

Akustyka jest jednym z głównych elementów funkcjonalności obiektu sakralnego. Projekt akustyczny kościoła jest wyzwaniem, ponieważ wnętrze musi być przystosowane do różnych wymagań akustycznych. Jednocześnie należy pamiętać, że we wnętrzach sakralnych ważne jest uzyskanie wrażenia sacrum w sferze dźwiękowej. Celem pracy jest zbadanie warunków akustycznych we współczesnym kościele katolickim, aby określić jakość dźwiękową wnętrza. Badania akustyczne przeprowadzono w kościele pod wezwaniem św. Jerzego w Poznaniu. Zastosowano wszechkierunkowe źródło dźwięku, program DIRAC wraz z kartą dźwiękową Brüel & Kjær ZE-0948 USB. Generowano sygnał e-sweep i wykonano pomiary parametrów uznawanych w literaturze za podstawowe do oceny własności akustycznych wnętrza sakralnego. Zbadane parametry akustyczne odniesiono do wartości zalecanych. Najważniejszym parametrem w ocenie jakości dźwiękowej wnętrza sakralnego jest czas pogłosu RT. Wiele ze współczesnych kościołów ma znacznie przekroczoną wartość tego parametru, co skutkuje hałasem pogłosowym. W badanym kościele otrzymany czas pogłosu RT mieści się w górnym zakresie wartości rekomendowanych, jednakże ze względu na brak organów należałoby zmniejszyć jego wartość. Krótszy pogłos pozwoli na uzyskanie lepszej zrozumiałości mowy przy zachowaniu wrażenia sacrum w sferze dźwiękowej. W projektowaniu obiektu sakralnego ważne jest, aby już od fazy koncepcyjnej projektu mieć na uwadze jego akustykę, pamiętając że wrażenia dźwiękowe będą wpływały na odbiór architektury wnętrza.

3

Educating of architectural students in acoustics as an answer to the reverberant noise standard

Sygulska Anna

Vibrations in Physical Systems

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2021

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Vol. 32, nr 2

art. no. 2021213

EN

Implementation of the new standard PN-B-02151-4 - Building Acoustics - Protection against Noise in Buildings, Part 4: Requirements for Reverberation Conditions and Indoor Speech Intelligibility and Testing Guidelines imposes on architects an obligation to design interiors in compliance with acoustic requirements. The above regulations give rise to the need to educate future architects so that the standard can be practically employed in their professional career. The aim of the article is to describe a teaching method tailored for students of architectural design compliant with the standard requirements without using specialized software programmes. The paper presents two types of design tasks that form a basis for teaching students within the framework of design practice in building physics - acoustics. The article shows how to teach students to facilitate full acquisition of the rules governing interior design compliant with reverberation parameters suitable for the assumed function, and to enable thorough comprehension of interior design.

4

Sound in urban planning – selected issues

Sygulska Anna

Przestrzeń i Forma

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2021

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nr 47

165--178

EN

The issue of acoustics is still underappreciated both in interior design in public utility facilities and in urbanized spaces. As noise pollution is on the rise, acoustic ecology is a vital part of responsible urban planning. The article explores the issue of sound in an open space in terms of noise protec tion, but its primary goal is to discuss it in the context of shaping a soundscape consciously. Finally, the article points out that it is crucial to protect soundscape as cultural heritage.

PL

Problematyka akustyki jest wciąż niedoceniana zarówno, jeżeli chodzi o projektowanie wnętrz w budynkach użyteczności publicznej jak również w przypadku przestrzeni zurbanizowanych. Ze względu na rosnące oddziaływanie hałasu ekologia akustyczna jest istotnym zagadnieniem odpowiedzialnej urbanizacji. W artykule podjęto problematykę dźwięku w przestrzeni otwartej, w kontekście nie tylko ochrony przed hałasem, ale przede wszystkim świadomego kształtowania krajobrazu dźwiękowego. Ważna jest ochrona krajobrazu dźwiękowego, który stanowi niewątpliwe dziedzictwo kultury.

5

Acoustic study of a baroque church

Sygulska Anna

Vibrations in Physical Systems

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2020

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Vol. 31, nr 2

art. no. 2020228

EN

The issue of sonic heritage in sacred historic buildings is gaining popularity and becoming a frequent subject of discussions. The Baroque St Joseph Church of Carmelite Fathers, a minor basilica, is, architecturally and culturally, an exceptional place in Poznań, a city located in western Poland. The church is often used as a concert venue. It underwent an acoustic study with the use of a sound source situated in the presbytery and on the pulpit. The aim of this paper is to present results of acoustic investigations and to compare its acoustic properties with other churches. Acoustic parameters acknowledged as primary values used to assess acoustic properties of a religious building were investigated and then compared with recommended values. Placement of the source in two measurement points rendered it possible to carry out speech intelligibility analyses for a variable position of the sound source, and, in effect, enabled functional assessment of the historic pulpit. Thus obtained results were compared with European Baroque churches whose parameters are available in the literature.

6

The Study of the Influence of the Ceiling Structure on Acoustics in Contemporary Churches

Sygulska Anna

Archives of Acoustics

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2019

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Vol. 44, No. 1

169--184

EN

The paper discusses acoustic problems in the contemporary Catholic church, and presents a study of the influence of the ceiling structure on acoustics in the interior for two types of ceiling structures, i.e. the truss type and the reinforced concrete one. The investigations involved six contemporary churches: three buildings with a truss type ceiling and three buildings with a reinforced concrete ceiling. The results reveal that in churches with a truss type ceiling, acoustic parameters reach values close to recommendations. In contrast, churches with a concrete ceiling create very unfavourable acoustic conditions. The investigations rendered it possible to calculate the sound absorption coefficient for the truss type cover.