Clean Audio for TV broadcast: An Object-Based Approach for Hearing-Impaired Viewers - April 2015
Audibility of a CD-Standard A/DA/A Loop Inserted into High-Resolution Audio Playback - September 2007
Sound Board: Food for Thought, Aesthetics in Orchestra Recording - April 2015
Design of a Passive DGRC Column Loudspeaker with Wave Front Synthesis
The DGRC (Digital and Geometric Radiation Control) principle enables assigning a large number of loudspeakers to a limited number of electronic channels. It was introduced in 2006, and is now used in digitally steerable column loudspeakers. In this paper, we propose a very simple and straightforward implementation of this principle in a passive column, where delays are approximated with all-pass passive circuits. As a result, the column is placed vertically (not tilted) and radiates a wave front which ensures high speech intelligibility and homogeneous SPL coverage. We present the design of this column, as well as modeling and experimental results. Finally, we discuss its advantages in terms of visual integration, acoustic performances, and cost effectiveness.
Click to purchase paper 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 and would like to subscribe to the E-Library then Join the AES!
This paper costs $20 for non-members, $5 for AES members and is free for E-Library subscribers.