Loudspeaker system
阅读：726发布：2022-05-13
专利汇可以提供Loudspeaker system专利检索，专利查询，专利分析的服务。并且A loudspeaker system having an electrooacoustical transducer and a sound-propagating member with at least a principal soundemitting axis. The sound director is movable to swing the axis through an angle to its normal position and thereby change the sound distribution accordingly. Stereophonic effects and changes in the quality of the tone (expression) are audible to the listener. The angle control may be effected independently of the electrical signal source or in dependence thereupon.，下面是Loudspeaker system专利的具体信息内容。
1. A loudspeaker system comprising electroacoustical transducer means including a housing and at least one sound-generating coil in said housing energizable with an electrical signal to produce acoustical vibrations, and means including a cone vibrated by said coil for propagating said acoustical vibrations along the axis of said cone, said coil being anchored at one end to said housing; and a mechanism including an oscillation-producing coil in said housing in addition to said sound-generating coil for oscillating said cone relative to said housing without displacement of said housing whereby the sound-propagating axis is swung out of a normal position during the course of sound transmission by the loudspeaker.
2. A loudspeaker system comprising electroacoustical transducer means energizable with an electrical signal to produce acoustical vibration, and means for propagating said acoustical vibration in a predetermined direction; and an arrangement for oscillating said means whereby the sound-propagating axis is swung out of a normal position during the course of sound transmission by the loudspeaker, said transducer means including a sound-generating coil energizable with said electrical signal to produce said acoustical vibration, a plurality of electromagnetic coils independent of said sound-generating coil and angularly equispaced about the axis of propagation of the system and armature means axially displaceable by said electromagnetic coils and operatively connected with said means for propagating said acoustical vibration.
3. The system defined in claim 2 wherein said means for propagating said vibrations is a diaphragm cone, said armatures being affixed to said cone.
4. A loudspeaker system comprising electroacoustical transducer means including sound-generating coil means energizable with an electrical signal to produce acoustical vibration, and means for propagating said acoustical vibrations in a predetermined direction; an arrangement for oscillating said means whereby the sound-propagating axis is swung out of a normal position during the course of sound transmission by the loudspeaker; and a housing enclosing said electroacousticAl transducer means, said arrangement including electromagnetic coil means for oscillating said means for propagating said acoustical vibrations without shifting of said housing, said electromagnetic coil means being independent of said sound-generating coil means.
5. The system defined in claim 4, further comprising circuit means for applying a periodic current to said arrangement for oscillating said means at the frequency of said periodic current.
6. The system defined in claim 4, further comprising circuit means for energizing said arrangement to oscillate said means for propagating said acoustical vibrations in accordance with at least one parameter of said electrical signal.
7. A loudspeaker system comprising electroacoustical transducer means energizable with an electrical signal to produce acoustical vibration; means for propagating said acoustical vibrations in a predetermined direction; an arrangement for oscillating said means whereby the sound-propagating axis is swung out of a normal position during the course of sound transmission by the loudspeaker; a housing formed with an iron yoke and a frustoconical housing portion extending from said yoke; at least one permanent magnet mounted in said yoke and forming part of said transducer means; a voice coil received in said yoke and cooperating with said permanent magnet, said means for propagating said acoustical vibrations including a diaphragm cone anchored to said voice coil and formed with an accordion-pleated peripherally affixed to said housing portion; and an array of angularly equispaced direction-changing coils received in said yoke and provided with respective armatures coupled with said diaphragm for deflecting the axis thereof out of its normal position, not all of said direction-changing coils being energized simultaneously.
8. A loudspeaker system comprising electroacoustical transducer means energizable with an electrical signal to produce acoustical vibration; means for propagating said acoustical vibrations in a predetermined direction; an arrangement for oscillating said means whereby the sound-propagating axis is swung out of a normal position during the course of sound transmission by the loudspeaker; a housing having a yoke and a rigid housing portion of frustoconical configuration extending outwardly from said yoke; an angularly equispaced array of direction-changing coils received in said yoke and each having an armature; and a diaphragm forming said means for propagating said acoustical vibrations and connected to said armatures for displacement thereby, not all of said direction-changing coils being energized simultaneously.
9. The system defined in claim 4 wherein said arrangement is so constructed as to permit an angle of the propagation axis of the sound between 30* and 40* with the normal axis position.
10. A loudspeaker system comprising electroacoustic transducer means energizable with an electrical signal to produce acoustical vibration; directing means including at least one coil for propagating said acoustical vibration in a predetermined direction; and an arrangement coupled with said directing means for controlledly varying the direction of said acoustic vibration with the axis of said propagation shifted from a normal position during the course of sound transmission by the loudspeaker, said arrangement including direction-control means with another coil in addition to said one coil, said direction-control means being coupled with said directing means for oscillating said axis of sound propagation in a single plane past said normal position in a direction generally orthogonal to said predetermined direction and with an amplitude as a function of a parameter of said electrical signal.
11. A loudspeaker system comprising electroacoustic transducer means energizable with an electrical signal to produce acoustical vibration; direction means for propagating said acoustical vibration in a predetermined direction; and an arrangement coupled with said directing means For controlledly varying the direction of said acoustic vibration with the axis of such propagation shifted from a normal position during the course of sound transmission by the loudspeaker, said arrangement including direction-control means coupled with said directing means for oscillating said axis of sound propagation past said normal position in a direction generally orthogonal to said predetermined direction and with an amplitude as a function of a parameter of said electrical signal, second direction-control means coupled with said directing means for oscillating said axis of sound propagation past said normal position and in a second direction generally orthogonal both to said predetermined and first directions, and actuator means for actuating said first and second direction-control means whereby the pattern of sound propagation follows a given trajectory related to the characteristics of said acoustic vibration.
12. A loudspeaker system comprising electroacoustic transducer means energizable with an electrical signal to produce acoustical vibration; directing means for propagating said acoustical vibration in a predetermined range of direction; and an arrangement coupled with said directing means for controlledly varying the direction of said acoustical vibration with the axis of sound propagation shifted generally randomly within said range during the course of sound transmission by said loudspeaker, said arrangement including a plurality of direction-control means selectively actuatable by the respective actuation signals to selectively shift and sweep the axis of sound propagation in accordance therewith.
13. A loudspeaker system as defined in claim 12 wherein said actuation signals are derived at least in part from a parameter of said electrical signal.
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