Fine acoustic is not there to be seen but should blend into the architecture.

Kahle Acoustics specialises in acoustics consulting for performing arts buildings, including concert halls, opera houses, theatres, and auditoria.

Our projects include new buildings, renovations and acoustic improvements, as well as the conversion of existing and “found” spaces.

Rather than applying preconceived ideas, Kahle Acoustics seeks optimised solutions that take context, culture, architectural design and artistic merit into account. In every case, the goal is to find a perfectly adapted solution that optimises the acoustics along with all other requirements.

To achieve this aim, and to avoid acoustic solutions that are “bolted on”, Kahle Acoustics is proactive in collaborating with the project architect, theatre consultant and user/client to integrate acoustics right from the very start.

Every member of Kahle Acoustics has a background both in music and science — through this we are highly attuned to the requirements of musicians, audience and performers alike. This perspective is essential when it comes to our work developing the brief for performance spaces in new or existing buildings.

Kahle Acoustics is located in Brussels, Belgium, and was founded in 2001 by Eckhard Kahle. All members work in multiple languages: French, English, Dutch and German, and on three continents: Europe, North America and Asia.

Kahle Acoustics frequently collaborates with some of the world's most prestigious architects, including Renzo Piano, Jean Nouvel, Rafael Viñoly, Paul Andreu, Rem Koolhaas, Eduardo Souto de Moura, David Chipperfield and Pekka Salminen.


The V-A-C Foundation on July 22nd 2021, shares an update on the building rehabilitation named Ges_2. This 1907 former warehouse's rehabilitation completion is happening anytime soon in the second half of 2021. More info on the V-A-C Foundation website and on Kahle Acoustics' s ongoing mission.

The Summer Salzburg festival started on July 19th 2021. It celebrates its 100 years of classical music concerts and drama performances. We would like to highlight a couple of events performed by the musicAeterna choir and their conductor Teodor Currentzis. The first, was held on July 21st, Lux Aeterna and was a homage to the works of Hildegard von Bingen, Gyorgya Ligeti, Alexei Retinsky and Andreas Moustoukis; and the second performance, scheduled next July 26th will be the Don Giovanni opera. More info available here.

The Tonhalle-Orchester Zürich and Paavo Järvi inaugurate the Grosse Tonhalle with Mahler's Third Symphony next September 15th 2021. The 2021-2022 programme is now available on their website.

The National Opera & Ballet in Amsterdam held its first production with limited audience as part of the Holland Festival on 20th June 2021. “Die ersten Menschen” by Rudi Stephan was performed by Concertgebouw Orchestra and will be broadcasted on Arte channel as of 25th June: video. Kahle Acoustics was involved in the design of an acoustic shell for the 1 600-seat auditorium (more info soon to come on our acoustic mission in the hall).

In collaboration with Barteld Postma and Brian Katz, Kahle Acoustics contributed to research into Room Acoustics design strategies in the pre-Sabine era. Our article (pdf) includes fascinating insights and guidelines from before the discovery of the reverberation time formula. For contemporary room design, there is much food for thought to be found in old texts! More info on our LinkedIn.

The episode on the Andermatt Concert Hall designed by Studio Seilern is broadcasted on Tuesday 2nd March 2021 at 7.00 pm on Sky Arts (GMT) and it explores the design and inspiration behind this world-class concert hall. Here is the link for Season 2 Episode 5 to be watched at your own convenience once you register.

Winter 2021, Emilie Carayol and Yann Jurkiewicz have started their new mission as acousticians to the owner for the development of the Ateliers Berthier site. It will become a major hub for the dramatic arts in Paris, France. Check out for more exciting news on the design architect's website.

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