In an auditorium, seeing and hearing are part of the same design experience.
Volumes, materials, surfaces and geometries influence the behaviour of sound and, at the same time, define the architectural character of the space. This is why acoustic design is at its most effective when integrated from the very earliest stages of the project, working in harmony with lighting, services, finishes and the composition of the space.
The Auditorium within the Caesarea railway complex is an interesting example of this approach: the sound-absorbing system incorporates the walls and suspended ceiling, transforming a functional requirement into a recognisable architectural feature.
Designing an auditorium also means designing the sound
Conference rooms, auditoriums and spaces intended for training present specific acoustic challenges: the speaker’s voice must reach the audience clearly and intelligibly, even at a distance from the speaker.
One of the key aspects is the control of reverberation, that is, the persistence of sound in the space due to the multiple reflections generated by the surfaces.
In a large space, the presence of hard, reflective surfaces can increase reflections, affecting the clarity of the sound and the intelligibility of speech.
The design must therefore strike a balance between sound absorption, reflection and distribution, taking into account the room’s geometry, volume, materials, intended use and the characteristics of the surfaces.
This raises an important question from an architectural perspective as well: how can acoustic treatment be integrated without disrupting the spatial language?
From technical requirements to architectural surfaces
It is precisely on this point that the Caesarea project offers an interesting insight.
For the auditorium, 4SOUND® P04F02 sound-absorbing panels with a Silver Fir Melamine finish were used, fitted to both the walls and the suspended ceiling.
This choice allows the acoustic treatment to extend across different levels of the space whilst, at the same time, creating a strong sense of visual continuity.
The result highlights an important principle for those designing spaces with high acoustic performance: the sound-absorbing element can form part of the architectural composition, rather than being perceived as a technical device added to the space.
Walls and ceiling: designing the distribution of sound-absorbing surfaces
The quantity of sound-absorbing material is just one of the variables to be considered in acoustic design.
Where it is placed also matters.
Distributing the treatment across different surfaces allows one to influence the sound reflections generated within the space. Walls and ceilings therefore play an active role in the room’s acoustic behaviour.
In the Caesarea project, this requirement also becomes a compositional opportunity.
The wall cladding visually continues onto the suspended ceiling, creating a sort of continuous envelope. The eye perceives the wall and ceiling as parts of the same system, whilst the acoustic treatment is integrated into the overall design of the space.
This is a particularly interesting approach in projects where the architect must reconcile acoustic performance, aesthetic continuity and the presence of building services.
The ceiling becomes part of the design
In auditoriums, the suspended ceiling is often one of the most complex issues to resolve.
Acoustics, lighting, sound distribution, detection systems, air conditioning and other services must coexist within a surface that remains highly visible from every position in the hall.
At Caesarea, the suspended ceiling is treated as a genuine architectural surface.
The wood-effect panelling is traversed lengthways by lines of light and slender dark elements. Loudspeakers and technical components are integrated into the composition without disrupting its overall appearance.
The result is a coherent design in which light, acoustics and technology follow the same rhythm.
It is precisely this integration that allows the technical requirements to become part of the character of the space.
The rhythm of the surfaces shapes perception
On observing the auditorium, another significant element emerges: rhythm.
The longitudinal lines of the suspended ceiling follow the depth of the hall and interact with the arrangement of the seating. Joints, lighting and panelling create a regular sequence that reinforces the direction of the space towards the area dedicated to the speaker.
Modularity thus takes on a dual function.
On the one hand, it technically organises the surface; on the other, it becomes a compositional tool through which to impart order, proportion and continuity to the environment.
For the designer, this means being able to take the acoustic system into account whilst defining the geometry and rhythm of the space, rather than having to make adjustments to the hall once the architectural design has been finalised.
Material and acoustics in a single surface
The quality of an auditorium depends not only on its performance but also on people’s perception of the environment.
In this project, the Silver Fir Melamine finish introduces a warm, textured element into a space characterised by rigorous geometries and a strong technological presence.
The light shade of the wood complements the neutral colours of the seating and flooring, whilst the contrast with the dark wall at the front creates a precise visual hierarchy.
Light also helps to alter the way the surface is perceived: the lines of light run across the suspended ceiling, emphasising its depth and highlighting the continuity of the cladding.
Acoustics, materials and light thus become integral parts of the same design system.
Integrating acoustics from the earliest stages of the project
One of the most common mistakes in the design of communal spaces is to address acoustics only once the layout, services and finishes have already been finalised.
Under these conditions, the scope for intervention is reduced and acoustic treatment risks becoming a corrective measure, with greater constraints from both an aesthetic and technical perspective.
Integrating acoustics from the early stages, on the other hand, allows for a simultaneous consideration of available surfaces, the distribution of sound-absorbing materials, lighting, services, modularity and finishes.
This represents a significant shift in perspective: acoustic comfort becomes one of the variables that shape the architecture.
The Caesarea project demonstrates precisely this possibility. The use of 4SOUND® panels on both vertical and horizontal surfaces helps to control reverberation and enhance the room’s acoustic quality, whilst the continuity of the finish creates a unified architectural language.
One system, different design requirements
The project utilised 4SOUND® P04F02, a 4Design sound-absorbing panel system, in the Silver Fir Melamine finish.
This solution allows the acoustic treatment to be integrated into the architectural surfaces, maintaining a consistent visual harmony between the walls and the suspended ceiling.
This is particularly important for auditoriums, conference halls, universities, corporate environments and other communal spaces, where the designer must coordinate different requirements within the same building envelope: listening quality, technical integration, choice of materials and the identity of the space.
AUDITORIUM CAESAREA | PROJECT FOCUS
Project: Auditorium – Railway Complex, Caesarea
Application: walls and suspended ceiling
Acoustic system: 4SOUND® P04F02
Finish: Silver Fir melamine
Design focus: reverberation control, material continuity, architectural integration
Photo: Peled Studios
