• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:

    公开号:SU1228305A1
    申请号:SU807771355
    申请日:1980-08-29
    公开日:1986-04-30
    发明作者:Штеффен Франк
    申请人:Дойтше Пост Рундфунк Унд Фернзетехнишес Центральамт (Инопредприятие)；
    IPC主号:
    专利说明:

    The invention relates to acoustics, namely, panoramic sound insulation, and can be used for the sound of large rooms, halls and auditoriums in the open air.
    A device is known for locally variable signal distribution through a powerful loudspeaker unit comprising loudspeaker-distributed or loudspeaker groups distributed in a room, a switching unit, a line, delays with intermediate outputs, variable gain blocks and a source of signals (Technische Mitteilungen des REZ, 1977 , Nr, 3, S, 55).
    However, the device is characterized by high-quality sound performance due to jumps in the level of propagation of the signal, as well as in their timbre. In addition, the level of the perceived signal has a strong dependence on the location of the listener in the voiced space.
    The purpose of the invention is to improve the quality of sound by changing the acoustic signal localization.
    This goal is achieved by the fact that in a device for locally variable signal distribution through a mono loudspeaker unit containing loudspeaker-distributed or group of loudspeakers, a switching unit, a delay line with intermediate outputs, step-adjustable gain units and a signal source, the switching unit is complete in the form of a non-switching matrix, while the signal source OUT is connected to the input of the delay line, the outputs of which through blocks with stepwise control The gain is directly connected to the input buses of the switching matrix, the output buses of which are connected to one loudspeaker or a group of loudspeakers; each output bus in the switching matrix is made of areas connected to each other, according to the number of input buses, by the movable contacts of the switch second fixed contacts kazhdz, th
    o
    five
    0
    five
    0
    five
    0
    five
    five
    Fa l.n
    FROM which are connected to the corresponding input bus, and the delay line is nojniena ensuring the condition
    and b
    where t is the delay time between neighbors
    them exits the delay line; the difference in the time of sound propagation from two rows of loud speakers to the nearest listening position.
    The drawing shows the possible spatial configuration of the arrangement of loudspeakers in the space bounded by the walls and ceiling of the room, as well as the layout of the device for single-channel reproduction.
    The walls of room 1 are approximately the same distance from each other as loudspeaker groups 1 through 8 and approximately in the middle of the ceiling — loudspeaker groups 9 and 10. The source of 11 audio signals is connected to the input of delay line 11 and both without delay and through additional intermediate terminals of the delay line - with input buses of the switching matrix 12. At the same time, the intermediate terminals are connected to the input buses of switching the matrix through matrix blocks with variable gain R, R, R,
    In the drawing, the state of the switching matrix corresponds to acoustic localization to loudspeaker 1. Signals from the source are transmitted to loudspeaker 1 without delay and without fading, to loudspeakers 2, 9 and 8 with the shortest delay time and with the least attenuation, to loudspeakers 3, 7 and 10 - with an average value of delay and fade times and to loudspeakers 4, 5 and 6 - with the highest delay and fade values.
    When the matrix is switched sequentially, the acoustic signal can be circulated by sequential localization to the loudspeakers 2-8.
    A similar result, but already in a vertical plane, can be achieved by simultaneously localizing, for example, to the speaker, then 9 and 10 and further and 5.
    Switching the matrix and, accordingly, ensuring the necessary distribution of signals from the intermediate terminals of the delay line, performed with provision of condition t.
    realized by using switches (A and B), coupling input and output buses of the matrix
    权利要求:
    Claims (1)
    [1]
    DEVICE FOR A LOCALLY VARIABLE SIGNAL DISTRIBUTION THROUGH A POWERFUL SPEAKER INSTALLATION, containing distributed loudspeakers or groups of loudspeakers in the room, a switching unit, a delay line with intermediate outputs, blocks with step-controlled gain and a signal source, which differs in that by changing the localization of the signal, the switching unit is made in the form of a switching matrix, while the output of the signal source is connected to the input of the line delays, the outputs of which are through blocks with a step-controlled gain, and the input is directly connected to the input buses of the switching matrix, the output buses of which are connected to one loudspeaker or a group of loudspeakers, and the adjacent outputs of the delay line and adjacent loudspeakers are connected respectively to a number of * a house located by the input and output buses of the switching matrix, each output bus in the switching matrix is made of sections interconnected the number of input buses, movable contacts of the switches, the second fixed contacts of each of which are connected to the corresponding input bus ^ and the delay line is satisfied providing the condition t> t h pa y * t where t is the delay time between adjacent outputs of the delay line;
    t is the difference in the propagation time of sound from two adjacent speakers to the nearest listening position.
    SU,., 1228305
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    同族专利:
    公开号 | 公开日
    BG34328A1|1983-08-15|
    CS269752B1|1990-05-14|
    DD145985A1|1981-01-14|
    DE3028392A1|1981-04-23|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    DD242954A3|1983-12-14|1987-02-18|Deutsche Post Rfz|GREATER SOUND SYSTEM|
    DD292805A5|1988-12-22|1991-08-08|Wolfgang Ahnert|METHOD AND ARRANGEMENT FOR AN INSTRUMENT AND TEMPORARILY SIGNAL DISTRIBUTION AGAINST A LARGE SYSTEM, IN PARTICULAR FOR AUDIOVISUAL EVENTS IN AUDITORIES, PREFERABLY DUPLICATE ROOMS|
    DE4105303A1|1991-02-20|1992-08-27|Nokia Unterhaltungselektronik|SOUND ARRANGEMENT OF A CAR|
    DE102005033238A1|2005-07-15|2007-01-25|Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.|Apparatus and method for driving a plurality of loudspeakers by means of a DSP|
    EP2416593A1|2010-08-02|2012-02-08|Svox AG|Method for indoor communication|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DD21603679A|DD145985A1|1979-10-05|1979-10-05|ARRANGEMENT FOR CENTRALIZED SIGNAL DISTRIBUTION BY A LARGE SPEAKER SYSTEM|
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