Research on the Planar Near-Field Acoustic Holography for Cyclostationary Sound Field
The conventional planar near-field acoustic holography is not suitable for cyclostationary sound field radiated by the rotating machines. When the cyclic spectral density (CSD), instead of the complex sound pressure, is adopted as reconstructed physical quantity, the modulating wave and carrier wave components of the cyclostationary sound field can be extracted exactly and so the cyclostationary planar near-field acoustic holography (CPNAH) technique was proposed. Simulation and experimental results show that the modulation characteristics of the cyclostationary sound field can be extracted effectively and the sound source can be localized accurately.
Paul P. Lin and Chunliang Zhang
Z. M. Chen et al., "Research on the Planar Near-Field Acoustic Holography for Cyclostationary Sound Field", Applied Mechanics and Materials, Vols. 105-107, pp. 164-167, 2012