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    • 8. 发明授权
    • Noise reducing device
    • 降噪装置
    • US07492911B2
    • 2009-02-17
    • US10846419
    • 2004-05-14
    • Tatsumi NakajimaKazunori Suzuki
    • Tatsumi NakajimaKazunori Suzuki
    • H04R3/02H04R3/00H04B15/00A61F11/06
    • G10K11/178
    • The present invention provides an active control type noise reducing device that is disposed at a sound barrier and with which can be obtained an excellent noise reduction effect with respect to moving sound sources. Linear array of flat loudspeakers are arranged in ascending order from an incoming side of automobiles towards an outgoing side. Delay times of 0, τ, 2τ, . . . , 8τ are respectively given in the arrangement order to the linear array of flat loudspeakers. By delaying signals in correspondence to the arrangement order, the wavefront of a control sound can be slanted in a diagonal direction. Namely, “line sound sources”, where sound sources are linearly arranged, arc pseudo-realized.
    • 本发明提供一种主动控制型降噪装置,其设置在声屏障上,并且可以获得相对于移动声源的优异的降噪效果。 扁平扬声器的线性阵列以从汽车的进入侧向外侧的升序排列。 延迟时间为0,tau,2tau。 。 。 ,8tau分别以平面扬声器的线性阵列的排列顺序给出。 通过相对于排列顺序延迟信号,控制声音的波前可以沿对角线方向倾斜。 也就是说,声源线性排列的“线声源”被弧形伪实现。
    • 10. 发明申请
    • Relay device and method
    • 继电器和方法
    • US20060209793A1
    • 2006-09-21
    • US11174836
    • 2005-07-05
    • Hideo AbeKenji FukudaSusumu KojimaKazunori Suzuki
    • Hideo AbeKenji FukudaSusumu KojimaKazunori Suzuki
    • H04L12/66
    • H04L12/6418H04L2012/6472H04L2012/6481
    • The present invention relates to a relay device enabling efficient management of a voice message and a caller to wait for transmission of the voice message in a short time. The relay device is located at a boundary between an existing telephone network and an IP network, converts and relays a voice signal and an IP packet. The relay device comprises a receiving unit receiving voice source data into which a voice message is digitized, a packet processing unit converting the received voice source data into a voice source data packet as the IP packet, a storage unit storing the converted voice source data packets, and a transmitting unit transmitting, when transmitting a designated voice message to a designated destination, the voice source data packet corresponding to the designated voice message among the stored voice source data packets.
    • 本发明涉及能够在短时间内有效管理语音消息和呼叫者等待语音消息传输的中继装置。 中继设备位于现有电话网络和IP网络之间的边界,转换和中继语音信号和IP分组。 所述中继装置包括:接收单元,其接收语音消息被数字化的语音源数据;分组处理单元,将接收的语音源数据转换为语音源数据分组作为所述IP分组;存储单元,存储转换的语音源数据分组 以及发送单元,在向所指定的目的地发送指定的语音消息时,发送对应于所存储的语音源数据分组中的指定语音消息的语音源数据分组。