Near field acoustic holography for cyclostationary sound field and its partial source decomposition procedure

作者：Wan, Q^*; Jiang, WK

来源：Journal of Vibration and Acoustics-Transactions of the ASME, 2005, 127(6): 542-546.

DOI：10.1115/1.2110820

• near field acoustic holography
• the cyclic spectrum density
• partial source decomposition
• principal component analysis

The cyclostationary near field acoustic holography (NAH) technique is proposed to overcome the limitations of the current NAH in analyzing cyclostationary sound field. The proposed technique adopts the cyclic spectrum density as the reconstructed physical quantity, instead of the spectrum of sound pressure. Moreover introducing the principal component analysis into the technique, a partial source decomposition procedure is suggested to decompose the soundfield radiated by multiple sound sources into some incoherent partial fields. More information about cyclostationary sound field can be shown clearly on the hologram of the proposed technique than NAH can, which is validated by the simulation results.

• 出版日期2005-12
• 单位上海交通大学