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
A Unified Theory of Horizontal Holographic Sound Systems
A theoretical foundation is development for horizontal holographic surround sound systems based on the two-dimensional Fourier transform. It is shown how the theory leads to the recording and reproduction of sound fields using circular arrays of microphones and loudspeakers. DFT processing of circular microphone arrays produces the spherical harmonics of the sound field, and is a generalization of certain higher order multipole microphones. The performance of the array is shown to be improved by using directional microphone elements. The angular sinc panning functions arise naturally from the reproduction theory, and a mode-matching approach further verifies that they are optimum at low frequencies. General windowing is reviewed for the control of artifacts at high frequencies and the radial error is proposed as a useful parameter for designing windows. Sound intensity theory is examined for visualizing surround sound fields, and a complex instantaneous velocity is introduced, which is easy to generate and equivalent to previous definitions for the case of monochromatic sound fields. The reproduction performance of a five-loudspeaker surround system is examined, and its performance over wider reproduction areas is also considered.
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.