<abstract xmlns="http://www.w3.org/1999/xhtml">

<p>Wood charcoal is a sustainable, renewable, and environmentally friendly material with the use that the acoustic device can produce. Charcoal made of wood waste materials allows for improving indoor acoustical quality. Therefore, this objective of the article is to investigate the sound scattering coefficients of QRD with the perforation ratio of oak wood charcoal elements. Sound scattering coefficient calculated with the measurement of the reverberation time in the reverberation chamber. The calculation results of the scattering coefficient show the growth of scattering in the frequencies - the highest value reached 0.88 (diffuser N7 with charcoal). The effectiveness of diffusers to diffuse sound waves increases as the number of wells grows. The diffuser with 80 % charcoal elements showed a higher scattering coefficient compared to the diffuser without charcoal elements.</p>
</abstract>

Wood charcoal is a sustainable, renewable, and environmentally friendly material with the use that the acoustic device can produce. Charcoal made of wood waste materials allows for improving indoor acoustical quality. Therefore, this objective of the article is to investigate the sound scattering coefficients of QRD with the perforation ratio of oak wood charcoal elements. Sound scattering coefficient calculated with the measurement of the reverberation time in the reverberation chamber. The calculation results of the scattering coefficient show the growth of scattering in the frequencies - the highest value reached 0.88 (diffuser N7 with charcoal). The effectiveness of diffusers to diffuse sound waves increases as the number of wells grows. The diffuser with 80 % charcoal elements showed a higher scattering coefficient compared to the diffuser without charcoal elements.

Experimental Studies of the Sound Scattering Coefficient of the Diffuser in the Reverberation Chamber

Department of Environmental Protection and Water Engineering

Environmental and Climate Technologies

This work is licensed under the Creative Commons Attribution 4.0 International License.

Wood charcoal is a sustainable, renewable, and environmentally friendly material with the use that the acoustic device can produce. Charcoal made of wood waste...

Experimental Studies of the Sound Scattering Coefficient of the Diffuser in the Reverberation Chamber

Published Online: Sep 21, 2023

Page range: 464 - 475

Received: Mar 25, 2023

Accepted: Jun 29, 2023

DOI: https://doi.org/10.2478/rtuect-2023-0034

Keywords
Diffuser, sound scattering coefficient, renewable materials, wood waste, wood charcoal

© 2023 Olga Khrystoslavenko et al., published by Sciendo

This work is licensed under the Creative Commons Attribution 4.0 International License.

Experimental Studies of the Sound Scattering Coefficient of the Diffuser in the Reverberation Chamber

Published Online: Sep 21, 2023

Page range: 464 - 475

Received: Mar 25, 2023

Accepted: Jun 29, 2023

DOI: https://doi.org/10.2478/rtuect-2023-0034

KeywordsDiffuser, sound scattering coefficient, renewable materials, wood waste, wood charcoal

© 2023 Olga Khrystoslavenko et al., published by Sciendo

This work is licensed under the Creative Commons Attribution 4.0 International License.

Keywords
Diffuser, sound scattering coefficient, renewable materials, wood waste, wood charcoal