How well do you know the Espro?
Located in the heart of the Place Stravinsky building, the Espace de projection (otherwise known as the Espro) is the place where IRCAM and the public meet, a unique space whose acoustics and scenography can be modified. As its name indicates, "Espro" is not a concert hall like any other.
"This space is really not a concert hall, but it can project sound, light, audiovisual events, all possible events that are not necessarily related to traditional instruments" in the words of its inventor Pierre Boulez, during his inaugural speech of the Espro in 1978.
The utopia remains alive and today IRCAM offers artistic experiences that spectators can't find anywhere else. A place of experimentation, a place of expression for science and the arts, an exhibition space for sound, live performance, and multi-media, Espro literally captures the spirit of the times.
Architects Renzo Piano & Richard Rogers
Acoustician M. Peutz
Inauguration October 1978
Dimensions 24m x 15,50m
Seating capacity 250 to 350
Variable Volume
Ceiling height can vary from 1.50m to 10.50m
Variability of the Acoustic Characteristics: reverberation time between 0.4 and 4 seconds
A space in motion
Located 16 meters below the place Stravinsky and isolated in an architectural system of boxes in boxes, this modular space has variable acoustics: the walls and ceilings are mobile. The position of the ceilings, and consequently the volume of the room, varies, as do the materials of the surfaces. The walls and ceiling panels are composed of rotatable prismatic modules with three faces (absorbing, reflecting, and diffusing) called periacts, which can be changed on the spot.
Watch as workers reposition the periacts during the renovation works.
An ambitious multichannel sound spatialization system
Both a research tool and subject, the Espro's audio equipment combines two cutting-edge systems for sound field reproduction: WFS (sound hologram synthesis) and Ambisonics (3D sound immersion). The room features a WFS system consisting of a 264-speaker array evenly distributed around the stage and the audience and a 75-speaker dome for three-dimensional Ambisonic sound diffusion. These 339 loudspeakers are controlled by a set of computers that manage multiple sound source spatialisation in real-time. All scenographic configurations are possible, the stage/room ratio is infinitely adaptable.
This system was installed with the support of the Ile-de-France region (Sesame equipment program), the CNRS, and Sorbonne University.
Over the next three years, this public space will be endowed with the latest equipment to ensure that it remains at the forefront of innovation thanks to the support of AXA, exclusive sponsor of the Espace de projection.
