Euphonic Chairs

Euphonic Chairs is a concept for an interactive sound installation in a section of the Malmö Stadsbiblioteket (City Library). It creates a sonic ambience with a sense of informality and play. 


Sound Installation


Himanshu Rohilla

Yenika Castillo

Angelika Losko

Lia Meilyawati

Role - Interaction Designer

Main contributions in user research, ideation, concept definition, and video production. Lead the team through the design process.

User Groups: Library staff & various types of visitors to the library

Research with visitors conducted through observations, interviews and a short questionnaire survey. Library staff was interviewed about the spaces, role of the library and policy documents studied to understand the vision for library as a third space. 

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Some findings from interviews:

"This is not a quiet library except for in specific sections so marked."

"Some of the sections have an atmosphere that is opposite of what is intended."

"Not all sections are well utilised."

"Modern libraries are not just about books, they are more like third spaces."

"I come here to read magazines and be around people"

"It's better when there are low sounds, it takes the pressure off"

Salient finding from observation:

While the staff we interviewed said this is not a quiet library except for the spaces explicitly marked, we observed other staff members asking visitors to be quiet in spaces with no expectation of silence.

Research and sketching

library section

Library section considered during sketching

library section

Library section neighbouring the chosen section

library section

Chosen library section for the concept

Synthesising research

Synthesising the research

sketch 2


sketch 7


sketch 6


sketch 8


sketch 1


sketch 4


sketch 3


sketch 5


categorising sketches

Categorising the sketches

categorising sketches

Categorising the sketches

sketch 9

Sketch finally chosen for the concept

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A bank of 10 rotating chairs in the magazine section were chosen to create a parasitic effect for the desired ambience. The chairs produce euphonic sounds when someone sits on them and rotates around. Many people together can make a piece of music.

Using an Arduino with a gyroscope, sound samples can be mapped to the angles of rotation creating smooth flowing sounds. Each chair can be assigned a different note in a scale. Different instruments can be used in samples for variations. 

Storyboard 1
storyboard 2

  Storyborads by Yenika Castillo & Lia Meilyawati

Selected Works

Citizen VoiceFutures Design for Democracy

cekoCo-Design & Social Innovation

TVINGACritical Product Design

Euphonic ChairsSound Installation Design

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SpoolCommunication Design

IPL & ISLSports Leagues Content Design

A(LIVE)Photo Book

SpaceTravel and Interior Photography

PeopleLife & Portrait Photography

MusicConcert Photography

© 2018 Himanshu Rohilla | All rights reserved | Creative Commons Credits