| 摘要 |
The present technology relates to a sound field re-creation device, method, and program, whereby it is possible to more accurately re-create a sound field. A space filter application unit applies a space filter to a spatial frequency spectrum of a sound pickup signal which is obtained by a spherical microphone array picking up sound, thereby obtaining a virtual speaker array drive signal of a ring-shaped virtual speaker array with a greater radius than the radius of the spherical microphone array. An inverse filter generating unit derives an inverse filter based on a propagation function from an actual speaker array to the virtual speaker array. An inverse filter application unit applies the inverse filter to a temporal frequency spectrum of the virtual speaker array drive signal, obtaining actual speaker array drive signals of the actual speaker array. It would be possible to apply the present technology to a sound field re-creation device. |
