WIRELESS COMMUNICATION SYSTEMS.
    1.
    发明申请
    WIRELESS COMMUNICATION SYSTEMS. 审中-公开
    无线通信系统

    公开(公告)号:WO2004006547A1

    公开(公告)日:2004-01-15

    申请号:PCT/DK2003/000471

    申请日:2003-07-03

    Inventor: GOVAERTS, Rene

    CPC classification number: H04M1/72502 H04M1/6033 H04M1/725

    Abstract: The invention relates to a communication system for use in connection with a stationary communication line, the communication system comprising two input/output units, each input/output unit comprising a first connector for connection of a communication line, a second connector for connection of an input/output device, a rechargeable battery and a third connector for connecting a charging voltage to the rechargeable battery, whereby the units comprise transmitters and receivers for communicating wireless a communication signal in one direction from a first input/output unit to a second input/output unit and in another direction from the second input/output unit a communication signal for input to the communication line.

    Abstract translation: 本发明涉及一种用于与固定通信线路连接的通信系统,该通信系统包括两个输入/输出单元,每个输入/输出单元包括用于连接通信线路的第一连接器,用于连接通信线路的第二连接器 输入/输出装置,可再充电电池和用于将充电电压连接到可再充电电池的第三连接器,由此这些单元包括用于将通信信号从一个方向从第一输入/输出单元向第二输入/ 输出单元,并且在另一方向上从第二输入/输出单元输入用于输入到通信线路的通信信号。

    ACTIVE AUDIO COMPRESSING IN TELECOMMUNICATION
    2.
    发明申请
    ACTIVE AUDIO COMPRESSING IN TELECOMMUNICATION 审中-公开
    主流音频压缩在电信

    公开(公告)号:WO2003079722A1

    公开(公告)日:2003-09-25

    申请号:PCT/DK2003/000188

    申请日:2003-03-19

    CPC classification number: H04R3/00 H04B1/64 H04M1/6016 H04R5/033

    Abstract: The invention relates to an output reducing system for a telephone system, e.g. implemented in a headset, comprising an input line and an output line, where the input line is transmitting an incoming signal to an output transducer and where the output line in transmitting an outgoing signal from an input transducer, where in connection with the input line a compressor system is provided for reducing the output signal level.

    Abstract translation: 本发明涉及一种用于电话系统的输出降低系统,例如, 实现在耳机中,包括输入线和输出线,其中输入线将输入信号发送到输出换能器,并且其中输出线在从输入线a发送输出信号的地方 提供压缩机系统来降低输出信号电平。

    MOBILES KONFERENZSYSTEM
    3.
    发明申请
    MOBILES KONFERENZSYSTEM 审中-公开
    移动会议系统

    公开(公告)号:WO2017108903A1

    公开(公告)日:2017-06-29

    申请号:PCT/EP2016/082099

    申请日:2016-12-21

    CPC classification number: H04M1/6033 H04M3/564

    Abstract: Es wird ein mobiles Konferenzsystem vorgesehen, das eine erste mobile Master-Freisprecheinheit (1100) und mindestens eine zweite mobile Slave-Freisprecheinheit (1200) aufweist, welche jeweils mindestens ein Mikrofon (1130, 1230) zur Aufzeichnung von Audiosignalen, einen Lautsprecher (1140, 1240) zur Wiedergabe von wiederzugebenen Audiosignalen, eine Akkumulatoreinheit (1010) zur Energieversorgung, eine Bedieneinheit (1110, 1210), mindestens eine Leuchteinheit (1121, 1221) und eine erste Sende/Empfangseinheit (1150, 1250) zur bidirektionalen drahtlosen Kommunikation zwischen der ersten und zweiten mobilen Freisprecheinheit (1100, 1200) aufweisen, Die erste Freisprecheinheit (1100) weist eine zweite Sende/Empfangseinheit (1160) zur drahtlosen bidirektionalen Audio-Kommunikation mit einer externen Einheit auf. Die erste Freisprecheinheit (1100) ist dazu ausgestaltet, Audiosignale, welche über die zweite Sende/Empfangseinheit (1160) von der externen Einheit empfangen wurden, durch die erste Sende/Empfangseinheit (1150) drahtlos an die zweite mobile Freisprecheinheit (1200) zu übertragen. Die erste Freisprecheinheit (1100) ist dazu ausgestaltet, Audiosignale, welche über die erste Sende/Empfangseinheit (1150) von der zweiten mobilen Freisprecheinheit (1200) empfangen wurden mit über das mindestens eine Mikrofon (1130) der ersten Freisprecheinheit (1100) aufgezeichneten Audiosignalen zu mischen und durch die zweite Sende/Empfangseinheit (1160) drahtlos an die externe Einheit zu senden.

    Abstract translation:

    是一个移动会议系统提供了一种具有第一主移动免提单元(1100)和至少一个第二移动从免提单元(1200),每一个具有至少一个麦克风(1130,1230),用于记录 音频信号,一个扬声器(1140,1240),用于再现要被再现的音频信号,蓄能器(1010)用于供电,操作单元(1110,1210),至少一个发光单元(1121,1221)和第一发送/接收单元(1150,1250 第一免提单元(1100)包括用于与外部单元进行双向无线音频通信的第二收发器单元(1160)。 第一免提单元(1100)适合于音频信号导航用途已经通过第一发送/接收单元(1150)接收在所述第二发送/接收单元(1160)从外部单元无线传输到第二移动免提单元(1200)以 导航应用转移。 第一免提单元(1100)适合于音频信号导航用途已经通过第一发送/接收单元(1150)从所述第二移动免提单元(1200)与导航用途接收(经由第一的至少一个麦克风(1130)免提单元1100 )并且通过第二收发器单元(1160)无线地发送到外部单元。

    Communication device with echo suppression

    公开(公告)号:US09819805B2

    公开(公告)日:2017-11-14

    申请号:US14323577

    申请日:2014-07-03

    CPC classification number: H04M9/082 H04B3/21 H04M9/087

    Abstract: The application relates to a communication device, e.g. a speakerphone, comprising a microphone signal path, MSP, and a loudspeaker signal path, SSP, the microphone signal path comprising a microphone unit, an MSP-filter, and a transmitter unit operationally connected to each other and configured to transmit a processed signal originating from an input sound picked up by the microphone, the loudspeaker signal path comprising a receiver unit, an SSP-filter, and a loudspeaker unit operationally connected to each other and configured to provide an acoustic sound signal originating from a signal received by the receiver unit. The communication device comprises a control unit for dynamically controlling the filtering characteristics of the MSP and SSP-filters based on one or more control input signals. This has the advantage of providing a simple and flexible scheme for decreasing echo in a communication device, while ensuring an acceptable sound quality in the transmitted signal.

    Loudspeaker system comprising equalization dependent on volume control

    公开(公告)号:US09706302B2

    公开(公告)日:2017-07-11

    申请号:US14173651

    申请日:2014-02-05

    CPC classification number: H04R3/04 H03G5/005 H03G5/165 H03G9/025 H04R2430/01

    Abstract: The application relates to a loudspeaker system including an input unit providing an electric input audio signal; an equalization unit for modifying said electric input audio signal in dependence on frequency and to provide an equalized electric audio signal according to a predefined equalization function, a loudspeaker unit for converting said equalized electric audio signal to an acoustic output sound signal, and a user interface for modifying a volume level of said output sound signal in a multitude (N) of steps V0, V1, . . . , VN. The application further relates to a method communication device comprising the loudspeaker system and to its use. The present application provides an improved loudspeaker system in which the equalization unit is configured to apply a specific equalization function EQ0, EQ1, . . . , EQN to the electric input audio signal in each of said multitude of steps V0, V1, . . . , VN of the volume level.

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