| 摘要 |
The aim of the invention is to ensure the same high quality of acoustic radiation from audio systems on each seat of current vehicles. Said aim is achieved by a novel acoustic device for generating audio signals, which allows sound sources to be integrated into the area located near the headrest of a vehicle seat such that the volume can be regulated in an individual manner without unduly disturbing the other passengers in a vehicle, who hear the audio signals to a significantly reduced extent. The headrest does not comprise any loudspeakers, thus offering good creative possibilities regarding accident protection and design. The acoustic near field at the headrest is generated by means of a sound line. The loudspeaker is disposed inside the backrest or under the seat, for example, while the sound line terminates in the headrest. Tuned pipes, the end of which is adjusted to the acoustic impedance of the clearance zone, are used as a sound line.
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