Office Sound Proofing – Do Acoustic Enhancement and architectural design combine?

 

Getting known with the problem

In relation to other environmental factors, the impact of unwanted sound or noise is an important and popular topic of study worldwide. Noise seems to cause de-concentration, irritation, difficulty in communication and a decrease in the performance of employees, which implies more working hours, overtime, delay in the production process, increase in production costs.

It has been calculated that the average sound level in a noisy office can be of the order of 75-80 dB(A). In fact, the research Bluyssen et al., 2011 proves that poor acoustics is by far the champion in the dissatisfaction rate of office staff especially for open-plan offices.

Office Percent Dissatisfied

How it is created & how it can be managed?Office Noise Transmittion

Acoustic noise transmission is divided into the following categories:

  • Direct Transmission
  • By reflection
  • By diffraction
  • From transmission through structural (masonry) or mechanical passages (air conditioning).

Of these four categories, usually the main problem in offices and workplaces comes from direct and reflected transmitted noise.

To deal with the directly transmitted noise, sound shading between the employees is requested. A simpler and more efficient solution is the installation of self-supporting or table-top frames (like ALPHAcoustic – Desk type). Acoustic dividers have double-sided sound-absorbing elements and have an internal sound proofing core. For the average height of an adult, the clear height of the frame is recommended to be at least 50 cm from the desk level to achieve greater office sound proofing.

Indicative applications of desktop acoustic frames:

ALPHAcoustic Desk Projects

In order to reduce the noise produced by reflection, it is necessary to install sound absorbing products, which will cover the hard reflective surfaces of the walls, ceilings and the floor. The challenge at this point is the architectural and ergonomic harmonization of the sound-absorbing products in the space. Usually such operations are done on the roof and on some available sections of masonry.

Photos of applications of ALPHAcoustic – AP panels on walls and ceilings:
ALPHAcoustic Desk sound absorption Projects

In order to make it easier to perceive and quantify the effectiveness of the interventions, the results of sound measurements from our company before and after the sound interventions carried out in office spaces are listed below.

Reverberation Time Before and After Noise Absorption
Reverberation Time Before and After Noise Absorption

Is Acoustic Enhancement a value for money option?

According to a relevant economic-technical study (Schiavon and Altomonte, 2014), the results of predicting money savings in case of improving office sound proofing are impressive. The forecast speaks of greater profits from radically changing the layout of the office or increasing other factors of staff comfort. Based on the same survey, it is estimated that 70% of employees feel that their productivity is reduced due to poor acoustic architecture in the office, which causes reverberation and high levels of noise.

Acoustics in offices and productivity

Office dividers combine both acoustic and aesthetic improvement of a space. In addition, they help to create a sense of privacy and personal space for employees. They are therefore one of the most suitable options for productivity, ergonomics and aesthetics in a modern working environment.

Proper acoustics are not a luxury, but a sound business move.

For more technical information and guidance on the optimal techno-economic acoustic intervention, do not hesitate to contact us at +30210-6779875 or info@alphacoustic.com.

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