The interior model of the Ostrava concert hall is complete
A perfect scale model of the future interior of the Ostrava concert hall at a scale of 1:10 was created over 24 weeks in workshops specializing in acoustic models in Mnichovo Hradiště by the leading Czech company AVETON s.r.o., in close collaboration with the Japanese company NAGATA ACOUSTICS. The model serves as the basis for planned acoustic measurements that will verify the correctness of the proposed solution or allow necessary adjustments to achieve the best acoustic parameters for the future Ostrava concert hall. Acoustic measurements will begin in early January and will be conducted by the renowned company NAGATA ACOUSTICS, which has designed similar halls around the world. “Every concert hall needs to be acoustically tested on a reduced yet faithfully crafted model. This creates perfect acoustics and allows the elimination of unwanted reverberations. By dispersing sound waves, a very fine sound distribution is achieved throughout the auditorium,” describes Yasuhisa Toyota from Nagata Acoustics. After the measurements are completed, the model will be transported to Ostrava and made accessible to the public.
“We continue to work intensively on the concert hall project. In addition to the completed 1:10 model, the documentation for the joint building permit is also finished, and discussions with the relevant state administration bodies are currently taking place, necessary for starting the construction proceedings. The construction of the concert hall itself, along with the reconstruction of the House of Culture of the City of Ostrava, will begin in the second half of 2022,” says Tomáš Macura, the mayor of Ostrava.
Inside the model measuring 4200 (width) x 4630 (length) x 2520 (height) mm (without the platform), upholstered chairs and figurines made of extruded polystyrene with hair and clothing will be placed to imitate the audience in the hall. They simulate the acoustic absorption of the audience. Even the mere presence of people changes the acoustic parameters of the space. “Three series of measurements are planned. After the first two series, an evaluation will take place based on which adjustments to some design details may occur. The last series of measurements will verify these adjustments. The goal of the measurements is to confirm that the shape of the hall, derived from calculations and computer modeling, and the materials used provide perfect acoustics,” says Ing. arch. Jan Antoš from Aveton. Jan Antoš ensured the comprehensive preparation of production materials for the model, determined its overall conception in collaboration with Ing. Tomáš Hrádek, the managing director of Aveton, and oversaw the entire production process in the workshop. Tomáš Hrádek adds about the model's production: “Models for concert halls have been made for decades. The possibilities of modeling and subsequent acoustic analysis have advanced significantly, and the production of acoustic models is now a common practice for all large halls. Based on experiences with other models, most recently for the Brno Janáček Cultural Center, and now with the model for Ostrava, we know that each model is unique, which requires an individual approach, not only in terms of interior details but also in the structural concept as a whole. The biggest challenge for the Ostrava hall was its completely asymmetric shape, which presents significantly more demanding design preparation than symmetrical models. Additionally, the construction of the ceiling canopy, which is also completely irregular, adds to the complexity.”
The large Ostrava concert hall, with a capacity of 1300 seats arranged in a so-called vineyard style, will be divided into smaller sections, with part of the audience also located behind a separate stage. The design and assurance of the corresponding acoustic adjustments for the Ostrava concert hall have been entrusted to the renowned Japanese specialist Yasuhisa Toyota, who has earned worldwide fame for his excellent work in concert halls across continents with his Tokyo studio, Nagata Acoustics. Since 1971, Nagata Acoustics has designed acoustic solutions for nearly 60 concert halls around the world. Thanks to "their acoustics," the sound resonates beautifully in halls in Paris, Shanghai, Tokyo, Los Angeles, Katowice, and Hamburg.
The author of the concert hall design, which also includes the reconstruction of the House of Culture of the City of Ostrava, is the leading American architect Steven Holl with his studio Steven Holl Architects from New York, in collaboration with the Prague studio Architecture Acts. The project has already been recognized by the prestigious American magazine Architizer as one of the 10 most anticipated buildings in the world. The resulting work has the potential to become a new icon of a significant cultural metropolis. In addition to the large concert hall with a capacity of 1300 seats, the building will provide facilities for a 100-member orchestra of the Janáček Philharmonic Ostrava, a chamber hall with a capacity of 515 seats, an educational center with a capacity of 200 seats, a world-class recording studio, a theater hall with a capacity of 490 seats, a restaurant, a café, lounges, and other spaces for leisure activities.
The contract for the production of the 1:10 scale model of the concert hall's interior was signed by the city of OSTRAVA with AVETON s.r.o. – which closely collaborated with the Japanese studio NAGATA ACOUSTICS and the Prague architectural office ARCHITECTURE ACTS on the implementation of the model. The amount for the production of the model, totaling 1,995,000 CZK, is funded from the Fund for the Construction of the Concert Hall.
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“We continue to work intensively on the concert hall project. In addition to the completed 1:10 model, the documentation for the joint building permit is also finished, and discussions with the relevant state administration bodies are currently taking place, necessary for starting the construction proceedings. The construction of the concert hall itself, along with the reconstruction of the House of Culture of the City of Ostrava, will begin in the second half of 2022,” says Tomáš Macura, the mayor of Ostrava.
Inside the model measuring 4200 (width) x 4630 (length) x 2520 (height) mm (without the platform), upholstered chairs and figurines made of extruded polystyrene with hair and clothing will be placed to imitate the audience in the hall. They simulate the acoustic absorption of the audience. Even the mere presence of people changes the acoustic parameters of the space. “Three series of measurements are planned. After the first two series, an evaluation will take place based on which adjustments to some design details may occur. The last series of measurements will verify these adjustments. The goal of the measurements is to confirm that the shape of the hall, derived from calculations and computer modeling, and the materials used provide perfect acoustics,” says Ing. arch. Jan Antoš from Aveton. Jan Antoš ensured the comprehensive preparation of production materials for the model, determined its overall conception in collaboration with Ing. Tomáš Hrádek, the managing director of Aveton, and oversaw the entire production process in the workshop. Tomáš Hrádek adds about the model's production: “Models for concert halls have been made for decades. The possibilities of modeling and subsequent acoustic analysis have advanced significantly, and the production of acoustic models is now a common practice for all large halls. Based on experiences with other models, most recently for the Brno Janáček Cultural Center, and now with the model for Ostrava, we know that each model is unique, which requires an individual approach, not only in terms of interior details but also in the structural concept as a whole. The biggest challenge for the Ostrava hall was its completely asymmetric shape, which presents significantly more demanding design preparation than symmetrical models. Additionally, the construction of the ceiling canopy, which is also completely irregular, adds to the complexity.”
The large Ostrava concert hall, with a capacity of 1300 seats arranged in a so-called vineyard style, will be divided into smaller sections, with part of the audience also located behind a separate stage. The design and assurance of the corresponding acoustic adjustments for the Ostrava concert hall have been entrusted to the renowned Japanese specialist Yasuhisa Toyota, who has earned worldwide fame for his excellent work in concert halls across continents with his Tokyo studio, Nagata Acoustics. Since 1971, Nagata Acoustics has designed acoustic solutions for nearly 60 concert halls around the world. Thanks to "their acoustics," the sound resonates beautifully in halls in Paris, Shanghai, Tokyo, Los Angeles, Katowice, and Hamburg.
The author of the concert hall design, which also includes the reconstruction of the House of Culture of the City of Ostrava, is the leading American architect Steven Holl with his studio Steven Holl Architects from New York, in collaboration with the Prague studio Architecture Acts. The project has already been recognized by the prestigious American magazine Architizer as one of the 10 most anticipated buildings in the world. The resulting work has the potential to become a new icon of a significant cultural metropolis. In addition to the large concert hall with a capacity of 1300 seats, the building will provide facilities for a 100-member orchestra of the Janáček Philharmonic Ostrava, a chamber hall with a capacity of 515 seats, an educational center with a capacity of 200 seats, a world-class recording studio, a theater hall with a capacity of 490 seats, a restaurant, a café, lounges, and other spaces for leisure activities.
The contract for the production of the 1:10 scale model of the concert hall's interior was signed by the city of OSTRAVA with AVETON s.r.o. – which closely collaborated with the Japanese studio NAGATA ACOUSTICS and the Prague architectural office ARCHITECTURE ACTS on the implementation of the model. The amount for the production of the model, totaling 1,995,000 CZK, is funded from the Fund for the Construction of the Concert Hall.
More information >
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