HofBox
2014 · Interactive sound installation; acoustic research
Can the social structures embedded in Berlin’s historical backyards be perceived through their acoustic characteristics?
HofBox is an interactive sound installation based on the acoustic and social structures of Berlin’s historical backyards. The project investigates whether the architectural configuration of courtyards — their size, enclosure, density, access and spatial hierarchy — can shape not only how people live, move and relate to one another, but also how these spaces sound.
The work takes Berlin’s backyards as acoustic and social spaces. In the city’s historical tenement architecture, courtyards were not neutral voids: they organised proximity, class, access, light, movement and everyday life. HofBox asks whether these social and spatial conditions leave acoustic traces, and whether such traces can be perceived through listening.
Using impulse response measurements from selected Berlin courtyards, the project creates acoustic simulations that allow different spaces to be heard through the same sounds. The installation transforms these measurements into an interactive listening system, where visitors can combine sound objects and courtyard spaces to experience how architecture modifies perception.
Rather than presenting backyards as visual or historical objects, HofBox approaches them as resonant social structures: spaces where architecture, acoustics and urban memory intersect.
Historical and Social Context
Berlin’s backyards became a characteristic part of the city’s tenement architecture during the nineteenth century, shaped by industrialisation, population growth, rural migration and speculative housing development. The term Mietskaserne - often translated as “tenement barracks” - already suggests the social and spatial pressure embedded in this form of housing: dense, hierarchical, repetitive and subordinated to economic constraints.
In these buildings, social hierarchy was spatially organised. More privileged inhabitants lived closer to the street-facing front buildings, while poorer residents were pushed into rear buildings, upper floors and smaller, denser apartments. The courtyards were therefore not only architectural spaces, but expressions of social division, access and restriction.
HofBox starts from this relation between built form and social structure. If the dimensions, enclosure and density of a courtyard affect how people inhabit it, can they also affect how the space is heard?
Acoustic Investigation
The project selected several Berlin houses and measured the acoustic behaviour of their backyards using the impulse response method. These recordings made it possible to capture the reverberant characteristics of each courtyard and to compare how different spaces affect the same sonic material.
Impulse responses allow the sound of a space to be separated, stored and later reactivated. In HofBox, this method becomes a way of listening to architectural difference: the same sound can be heard through the acoustic characteristics of different backyards, making their spatial conditions perceptible without being physically present in them.
The question is not whether sound can “prove” social structure in a direct or deterministic way. Rather, the project asks whether acoustic experience can make spatial and social differences sensible: density, enclosure, distance, access, resonance and restriction.
The Installation
HofBox translates this research into a tangible user interface. Physical objects are connected to digitised sounds and to impulse responses recorded in Berlin courtyards. By moving and combining these objects, visitors can listen to different sounds inside different simulated backyard acoustics.
The installation turns listening into an exploratory act. Instead of reading about the relation between social structure and spatial form, visitors test it through perception: they hear how the same sonic event changes when placed inside different courtyard acoustics.
In this sense, HofBox is not only a documentation project, but a listening experiment. It asks whether urban memory and social history can be approached through the acoustic behaviour of everyday architectural spaces.
