^{Project Type: Cultural and community building
Location: Greifensee, Switzerland
Architecture: Stehrenberger Architekten / Horisberger Wagen Architekten, Zurich
Acoustic Planning: Kahle Acoustics, Brussels
Application: Acoustic curtains and textile concept
Products: STREAMER pro, SYROS 
Photography: © Beat Bühler, Zurich}

Project Overview
The Landenberghaus has developed into an established centre of social, political and cultural life in Greifensee and the surrounding region. To meet current and future requirements, the hall and its adjoining spaces were comprehensively renewed. The project aimed to enhance functionality, flexibility and acoustic performance while respecting the historical character of the building.

Acoustic Challenge
Multipurpose cultural halls require adaptable acoustic conditions to accommodate a wide range of uses, from speeches and community meetings to performances and cultural events. The space demanded flexible acoustic solutions capable of responding to changing occupancy and programme requirements without permanent architectural intervention.

Acoustic Solution
Annette Douglas Textiles developed the complete textile concept in collaboration with Stehrenberger Architekten, Horisberger Wagen Architekten, and acoustician Kahle Acoustics. In the main hall, the STREAMER pro acoustic curtain was designed as a flexible 360° system that can be positioned around the space as needed. When acoustic absorption is not required, the curtains can be fully retracted. At gallery level, additional STREAMER pro curtains can be extended along the entire length to reduce echoes. Along the façade, blackout curtains combined with the textile SYROS, also developed by Annette Douglas, provide functional light control while referencing the historic architecture through a subtle diamond-pattern design.

Application

• translucent acoustic curtain STREAMER pro
• flexible 360° installation for adaptable acoustic conditions
• retractable system allowing variable absorption levels
• gallery curtains for echo reduction
• blackout curtain combined with textile SYROS
• textile design referencing historical architectural context
• integrated acoustic and spatial flexibility

Architectural Impact
The project demonstrates how textile acoustic systems can enhance multifunctional cultural spaces by combining flexibility, acoustic performance and architectural sensitivity, supporting diverse community activities within a historic environment.

Textile acoustic solutions by Annette Douglas Textiles improve room acoustics while preserving architectural transparency and design intent.