Autors: Filipov, S. Y., Pleshkova, S. G.
Title: Analysis of Loudspeakers Directivity Diagram versus frequency and Impact to Sound Systems Effectiveness
Keywords: loudspeaker directivity, real time analyzer, directivity pat

Abstract: The directivity diagram of loudspeakers is important parameter when acoustic engineer starts to design loudspeakers grid used in masking or public address systems. The key factor when we talking about closed premises is the placement of the loudspeakers and his directivity pattern. That is why during the early 1960s many researches were made by companies like JBL and TOA at loudspeaker directivity pattern. The aim was to create wide band loudspeakers to respond the sound masking systems wide spectrum that also has enough acoustic power to cover maximum floor area and to create homogeneously sound ambiance. This will alleviate the engineer design and the total quantity of the speakers which will make the entire system less complex and more effective. Now in this topic we will check and examine the directivity pattern of three types of loudspeakers according to the generated frequencies from sound masking systems. The most common methods to obtain the frequency response and directivity


  1. D. Pierce, 1989, An Introduction to its Physical Principles and Applications, New York, Acoustical Society of America
  2. P. Dowling, 1997, Steady-State Radiation From Sources,’’ in Encyclopedia of Acoustics, New York, McGraw-Hill
  3. Beranek, L.L, 1994, Acoustics, New York, McGraw-Hill
  4. H. Nayfeh and M. K. Brussel, 1950, Electricity and Magnetism Wiley, New York, McGraw-Hill
  5. B. Marion and M. A. Heald, 2013, Classical Electromagnetic Radiation Harcourt Brace Jovanovich, 2rd ed., New York, Academik Press


ISSE 2017, 2017, Bulgaria,

Full text of the publication

Цитирания (Citation/s):
1. Tsvetan ValkovskiKalin Dimitrov.Use of Optical Methods for Detecting Low Frequency Sounds June 2023 DOI: 10.1109/ICEST58410.2023.10187338 Conference: 2023 58th International Scientific Conference on Information, Communication and Energy Systems and Technologies (ICEST) - 2023 - в издания, индексирани в Scopus или Web of Science

Вид: публикация в международен форум, публикация в издание с импакт фактор, публикация в реферирано издание, индексирана в Scopus