The idea was to kill sound with it’s own – meaning a microphone that catches the noisy surroundings and uses the same frequency from a roof molding loudspeaker shooting the frequency very specific down to the floor to hide it from spreading out in the office. In extension the sound wall should be adjustable, meaning one day the area could act as a silent conference room as the other day the area only cancel minor noise levels just to keep the work station more productive.

1. +
SoundWall

2. +
 Challenge
 Open and crowded areas full of noice, with an occasionaly need of
privacy
 Expensive to build single offices for employees with reason to avoid
distracting noises – science shows that open areas are good for
collaboration but the noisy environment make people less
productive.

3. +
 Solution – draft
 Sound is killing sound
 Dividing the office into different auto- or manually adjusted sound
areas

4. +
 Solution
 Invisible and adjustable infra / ultra sound (not hearabale for human
sense) or air free zones (sound does not travel without air)
 Two options for avoiding distracting sound
 Infra / Ultra sound
 Pros: Invisible, adjustable
 Cons: Possible? Need to listen up and kill with same hertz
 Air free
 Pros:
 Cons: Takes more space than infra/ultra

5. +
 Technical solution
 Infra/ultra sound
 1-10 Hz or 100 000 – 1 000 000 Hz inhearable sound is
constantly thrown from a sender from roof to floor (wall to wall) or
vice versa
 The inhearable sound, dependent on what frequence and/or the
distance between the sound waves that it is sent, destroys more
or less of the office sound or similar that is trying to pass the sent
frequence/sound waves.

6. +
 Competitive environment
 Physical sound walls
 Commonly used beacuse of its cost effectiveness
 Price/m2: 1000-2000 SEK / office table
 Loudspeakers
 Today offered together with sensors adjusting the disturbing noise
very locally according to level of noice in the room (”white noise”)
 Containing blend of all the audible frequencies distributed equally
over the range of the frequency band.
 Price/m2: ca 65 USD  550 SEK

7. +
 Competitive environment
 Soft walls / floors / curtains
 Commonly used because of its cost effectiveness and cosiness
 Price/m2: 300-400 SEK

8. +
 Other facts & calculations
 Average area / employee in Sweden 20-25m2
 74% of Swedish companies are run by single entrepreneurs (+700’)
 22% have between 1-9 employees (+240’)
 Only 0,1% employers have more than 250 employees (approx. 1’)
 Meaning top companies offices might be about 5000m2
 Investments if all should choose…
 Soundwalls  1000*250*1000*0,1= 250 MSEK
 Loudspeakers  1000*250*550*0,1= 137 MSEK
 Soft carpets  1000*2
 NB: Estimated 10% of the companies need improved office areas