[ Zaha Hadid ] Chamber Music Hall

The chamber music hall has been installed within Manchester Art Gallery for the duration of the Manchester International Festival 2009.From the festival program: “Across a series of nine concerts, threeinternationally acclaimed musicians will perform Bach’s soloinstrumental works in this unique, intimate space. The aim: to create anear-perfect environment for the audience to experience some of theworld’s most beautiful chamber music. A union of two true originals,three centuries apart.”

The concert series in the new chamber music hall will run until Sat,July 18. Daytime entry to the installation is free. It will be open forviewing July 4 – Aug 31, Tue – Sun (and Bank Holiday Mon) 10am - 5pm.

Zaha Hadid Architects have created a unique chamber music hall specially designed to house solo performances of the exquisite music of Johann Sebastian Bach.

A voluminous ribbon swirls within the room, carving out a spatial and visual response to the intricate relationships of Bach’s harmonies. As the ribbon careens above the performer, cascades into the ground and wraps around the audience, the original room as a box is sculpted into fluid spaces swelling, merging, and slipping through one another.

The design process involved architectural considerations of scale, structure and acoustics to realize a dynamic formal dialogue inseparable from its intended purpose as an intimate chamber music hall. A layering of spaces and functions is achieved through the ribbon wrapping around itself, alternately compressing to the size of a handrail then stretching to enclose the full height of the room. Circulatory and visual connections are continually discovered as one passes through the multiple layers of space delineated by the ribbon.

The ribbon itself consists of a translucent fabric membrane articulated by an internal steel structure suspended from the ceiling. The surface of the fabric shell undulates in a constant but changing rhythm as it is stretched over the internal structure. It varies between the highly tensioned skin on the exterior of the ribbon and the soft billowing effect of the same fabric on the interior of the ribbon. Clear acrylic acoustic panels are suspended above the stage to reflect and disperse the sound, while remaining visually imperceptible within the fabric membrane. Programmed lighting and a series of dispersed musical recordings activate the spaces between the ribbon outside of performance times. The installation is designed to be transportable and re-installed in other similar venues.

Pivotal to its function is the performance of the ribbon. It has been designed to simultaneously enhance the acoustic experience of the concert while spatially defining a stage, an intimate enclosure, and passageways. It exists at a scale in which it is perceived as both an object floating in a room as well as a temporal architecture that invites one to enter, inhabit and explore.

CLIENT: Manchester International Festival
PROGRAM: Chamber Music Hall
ARCHITECTS: Zaha Hadid Architects
DESIGN TEAM (Zaha Hadid Architects): Melodie Leung, Gerhild Orthacker
ACOUSTIC CONSULTANT: Sandy Brown Associates
FABRICATOR: Base Structures
TENSILE STRUCTURAL ENGINEER: Tony Hogg Design Ltd
SITE: Manchester Art Gallery, T1 Gallery
SITE AREA: 17m x 25m

Acoustician’s Text (Mark Howarth, Partner, Sandy Brown Associates, Acoustician):

The challenge of the project was to take a gallery space primarily designed for visual art and help Zaha Hadid Architects in their vision to convert it into a modern extraordinary new performance space for chamber music.

The initial part of the design involved testing the baseline acoustic response of the gallery space and looking at how this could be enhanced by the installation. This included investigating how the finishes and shape of the room determined its reverberation time (a measure of how long it takes for sound to decay in a room), and caused unwanted flutter echoes from sound repeatedly reflecting back-and-forth between surfaces. The measurements also identified the level of ambient noise from external noise sources, such as road and air traffic, and from air conditioning systems within the building.

The selected gallery space is located towards the rear of the building, away from the noisy rumbling sound of Metrolink trams passing by the front. However, control of noise from the in-house air conditioning system to make it suitable for music was a challenge. The gallery has strict requirements for the regulation of air temperature and humidity to help preserve many of the precious works it houses. This meant it could not be turned off or reduced during performances. The importance of this was highlighted by the recent exhibition of 500 year old Leonardo da Vinci sketches in a connecting room to the new performance space. Control of noise from the air conditioning system was discussed with staff at Manchester Art Gallery and they were particularly helpful in carrying out works behind the scenes to help reduce noise intrusion to the new performance space.

For optimum conditions for chamber music it is important to ensure that the reverberation time is not too long as this blurs individual notes so music can lose its intricacy. Equally it should not be too short as this provides a lack of response for the performer and causes the music to sound overly dry. The designers therefore looked at achieving a reverberation time of 1.4 to 1.7 s at mid-frequencies (500-1000 Hz) with a higher reverberation at lower (bass) frequencies to provide a warm room response.

Measurements in the room indicated the existing ceiling and the large void behind it provided a significant amount of acoustic absorption. This influenced the choice of materials for the installation as the designers wanted to avoid adding too much additional sound absorptive material to ensure the acoustics did not become too dry. Zaha Hadid Architects therefore investigated use of different materials for the installation, including various fabrics, metals and plastics. These were developed as 3D CAD models by Zaha Hadid Architects and were then imported into acoustic modelling software by Sandy Brown Associates. This enabled the investigation of different finishes and sculptural shapes to enhance acoustic conditions around the stage and audience areas of the space.

The final installation uses a lightweight synthetic fabric (150 g/m2) supported on a rigid metal framework to provide the flowing sensual shape of the installation while minimising absorption. The shape of the frame and fabric acts to scatter sound reflections between parallel walls within the gallery to eliminate flutter echoes and provide a more even diffuse sound for audience members. Around the stage, specially shaped acrylic reflector panels have been carefully positioned and hidden within the fabric of the installation. These are designed to reflect sound with a short delay back towards the performer and out towards the audience to increase the clarity and strength of the music while maintaining the reverberant response of the room.

from  bustler

Manchester International Festival 2009 기간동안 맨체스터 아트 갤러리에 설치 될 음악무대용 조형물이라는군요. 바하의 음악을 국제적인 음악가들이 와서 연주한다.. 뭐 이런 컨셉인데 음향학적 고려와 미적인 고려를 동시에 고려하여 리본형태가 나왔다는 그녀의 설명도 있네요. 사실 대부분 그렇듯 그 기능적인 성향에 대한 데이터베이스가 보통 웹 상에 공개되고 있지 않아서 (있다는 가정하에) 음향학적인 고려가 사실인지 아닌지는 매우 궁금하지만.. 뒤쪽에 그걸 의식했는지 잔뜩 이 설치물이 주는 음향학적인 효과를 서술해 놓긴 했는데 뭐 그닥 와닿진 않네요. 여러겹 둘둘 천을 말아놓으면 음의 공명효과 제어 및 노이즈 감소를 의도할 수 있다... 정도로 보이는데 실로 그런 것들을 어떻게 시뮬레이션 했는지가 더 관건이었겠죠. 뭐.. 전문용어도 나오고 하니 거짓말은 아니겠고 일단 그녀가 '늘 하시는대로' 이쁘긴 이쁩니다 ㅎㅎ