Sound power level as a measure of efficiency of Distributed Mode Loudspeakers

• Published in: International Journal of Electronics and Telecommunications
• Main Authors: Karol Czesak, Piotr Kleczkowski
• Format: Article in Journal/Newspaper
• Language: English
• Published: Polish Academy of Sciences 2024
• Subjects: dml; sound power level; loudspeaker characteristics; loudspeaker measurements; reverberation chamber; Electrical engineering. Electronics. Nuclear engineering; TK1-9971; Telecommunication; TK5101-6720; DML
• Online Access: https://doi.org/10.24425/ijet.2024.149581; https://doaj.org/article/14fd4348dae741b89d6cf10af65ff04d

Distributed Mode Loudspeakers (DMLs) are characterized by properties, which make them significantly different from conventional electrodynamic loudspeakers. Such differences occur due to the design assumptions of the DML. In this work, a series of SPL measurements of DML in a reverberation chamber has been carried out, which were compared with those for an electrodynamic loudspeaker. Sound power level was determined from the results of conducted measurements for both types of transducers. It was calculated in 1/3 octave bands, for the pink noise excitation. The sound power level obtained with these two different types of loudspeakers is not significantly differing between each other.