You are currently logged in as an
Institutional Subscriber.
If you would like to logout,
please click on the button below.
Home / Publications / E-library page
Only AES members and Institutional Journal Subscribers can download
We propose a filter design method for a circular loudspeaker array. This method is based on extended three-dimensional (3-D) bases that are observed by driving each circular harmonic mode using a prototypical circular loudspeaker array. When a desired 3-D directivity pattern is expanded by the extended 3-D bases, the filter coefficients can be obtained by combining the circular harmonics with the expansion coefficients of the desired 3-D directivity pattern. Moreover, the proposed method can suppress large filter gains at low frequencies by limiting the gain at each order (mode) using L1-norm optimization. We evaluated the performance of directivity and sound distortion using an actual 8-element circular loudspeaker array of radius 0.054 m. These results showed that the proposed method could control the 3-D directivity with little distortion.
Author (s): Sato, Koya; Haneda, Yoichi
Affiliation:
The University of Electro-Communications, Chofu-shi, Tokyo, Japan
(See document for exact affiliation information.)
AES Convention: 142
Paper Number:9767
Publication Date:
2017-05-06
Import into BibTeX
Session subject:
Posters: Spatial Audio
Permalink: https://aes2.org/publications/elibrary-page/?id=18643
(2359KB)
Click to purchase paper as a non-member or login as an AES member. If your company or school subscribes to the E-Library then switch to the institutional version. If you are not an AES member Join the AES. If you need to check your member status, login to the Member Portal.
Sato, Koya; Haneda, Yoichi; 2017; Filter Design of a Circular Loudspeaker Array Considering the Three-Dimensional Directivity Patterns Reproduced by Circular Harmonic Modes [PDF]; The University of Electro-Communications, Chofu-shi, Tokyo, Japan; Paper 9767; Available from: https://aes2.org/publications/elibrary-page/?id=18643
Sato, Koya; Haneda, Yoichi; Filter Design of a Circular Loudspeaker Array Considering the Three-Dimensional Directivity Patterns Reproduced by Circular Harmonic Modes [PDF]; The University of Electro-Communications, Chofu-shi, Tokyo, Japan; Paper 9767; 2017 Available: https://aes2.org/publications/elibrary-page/?id=18643
@article{sato2017filter,
author={sato koya and haneda yoichi},
journal={journal of the audio engineering society},
title={filter design of a circular loudspeaker array considering the three-dimensional directivity patterns reproduced by circular harmonic modes},
year={2017},
number={9767},
month={may},}