| 摘要 |
The invention relates to an apparatus (6) and a method for driving loudspeakers (2.1, 3.1) of a sound system (1) in a vehicle (10), the sound system (1) comprising at least two loudspeakers (2.1) of a basic system (2), and a plurality of loudspeakers (3.1) of a focus system (3), wherein each of the loudspeakers (2.1, 3.1) of the basic system (2) and of the focus system (3) has a position in an environment (7), and wherein the apparatus (6) comprises : - a basic channel provider (6.1) for providing basic system audio channels (BSAC) for driving the loudspeakers (2.1) of the basic system (2), - a focused source renderer (6.2) for providing focus system audio channels (FSAC) to drive the loudspeakers (3.1) of the focus system (3), wherein the focused source renderer (6.2) is configured to calculate a plurality of filter values for the loudspeakers (3.1) of the focus system (3) based on the positions of the loudspeakers (3.1) of the focus system (3) and based on a position of a focus point (8, 8'), wherein the focused source renderer (6.2) is configured to generate at least three focus group audio channels (FGAC, FGAC-1 to FGAC-3) for at least some of the loudspeakers (3.1) of the focus system (3) based on the plurality of filter values and based on a focus audio base signal (FABS, FABS-1) to provide the focus system audio channels (FSAC), so that an audio output produced by the loudspeakers (3.1) of the focus system (3), when being driven by the focus system audio channels (FSAC), allows for localizing the position of the focus point (8, 8') by a listener (9) in the environment (7). |
