Source-Location-Informed Sound Field Recording and Reproduction

A sound field recording and reproduction method that exploits prior information on the locations of sound sources to be reproduced is proposed. Current methods do not take such prior information into consideration in the transformation from the signals received by microphones into the driving signal...

Full description

Saved in:
Bibliographic Details
Published in:IEEE journal of selected topics in signal processing 2015-08, Vol.9 (5), p.881-894
Main Authors: Koyama, Shoichi, Furuya, Ken'ichi, Haneda, Yoichi, Saruwatari, Hiroshi
Format: Article
Language:English
Subjects:
Accuracy
Estimation
Loudspeakers
maximum a posteriori (MAP) estimation
Microphone arrays
Position measurement
Signal processing
Sound field reproduction
super-resolution
wave field synthesis
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:A sound field recording and reproduction method that exploits prior information on the locations of sound sources to be reproduced is proposed. Current methods do not take such prior information into consideration in the transformation from the signals received by microphones into the driving signals of loudspeakers. The proposed method for planar and linear arrays of microphones and loudspeakers optimizes spatial basis functions and their coefficients, which represent the driving signals of loudspeakers, on the basis of the maximum a posteriori (MAP) estimation approach, leading to higher reproduction accuracy above the spatial Nyquist frequency when there are fewer microphones than loudspeakers, i.e., super-resolution in sound field recording and reproduction. Numerical simulations show that the reproduction accuracy at frequencies above the spatial Nyquist frequency was maintained using the proposed method even when there was a mismatch between actual and prior locations of the sound sources to be reproduced.
ISSN:1932-4553
1941-0484
DOI:10.1109/JSTSP.2015.2434319