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    • 2. 发明申请
    • BROADSIDE SMALL ARRAY MICROPHONE BEAMFORMING UNIT
    • 广泛的小阵列麦克风射束单元
    • WO2008085561A1
    • 2008-07-17
    • PCT/US2007/078708
    • 2007-09-18
    • FORTEMEDIA, INC.ZHANG, MingPAI, Wan-chieh
    • ZHANG, MingPAI, Wan-chieh
    • H04R9/08
    • H04R3/005H04R2430/20
    • A broadside small array microphone beamforming unit comprises a first omni- directional microphone to generate a signal X1 (t), a second omni-directional microphone to generate a signal X2(t), a first delay unit delaying the signal X1 (t) to generate a signal X1(t-T), a second delay unit delaying the signal X2(t) to generate a signal X2(t-T), a first substrator subtracting the signal X1(t-T) from the signal X2(t) to generate a signal R(t)=X2(t)- X1(t-T), a second substrator subtracting the signal X2(t-T) from the signal X1 (t) to generate a signal L(t) =X1(t)- X2(t-T), a third delay unit delaying the signal R(t) to generate a signal R'(t)=R(t-D), a gain function unit convoluting the signal L(t) with a gain function G(t) to generate a signal L'(t)=L(t)*G(t-i), and a substrator subtracting the signal L'(t) from the signal R'(t) to generate a signal B'(t)= R'(t)-L'(t).
    • 宽边小阵列麦克风波束成形单元包括产生信号X1(t)的第一全向麦克风,产生信号X2(t)的第二全向麦克风,第一延迟单元将信号X1(t)延迟到 产生信号X1(tT),第二延迟单元延迟信号X2(t)以产生信号X2(tT),从信号X2(t)减去信号X1(tT)的第一减法器,以产生信号X (t)= X2(t)-X1(tT),从信号X1(t)减去信号X2(tT)的第二减法器以产生信号L(t)= X1(t)-X2(tT) 延迟信号R(t)以产生信号R'(t)= R(tD)的第三延迟单元,用增益函数G(t)对信号L(t)进行卷积的增益函数单元,以产生信号L (t)= L(t)* G(ti),以及从信号R'(t)减去信号L'(t)的生成信号B'(t)= R'(t) - L'(t)的。
    • 4. 发明申请
    • A FULL-DUPLEX COMMUNICATION DEVICE AND METHOD OF ACOUSTIC ECHO CANCELLATION THEREIN
    • 全双工通信设备及其呼叫方法
    • WO2009017510A1
    • 2009-02-05
    • PCT/US2007/078696
    • 2007-09-18
    • FORTEMEDIA, INC.ZHANG, MingPAI, Wan-Chieh
    • ZHANG, MingPAI, Wan-Chieh
    • H04B3/20
    • H04M9/082H04B3/234H04B3/237
    • The invention provides a full-duplex communication device. The full-duplex communication device comprises a first adaptive filter, a second adaptive filter, a channel decoupling module, and a frequency processing module. The first adaptive filter having a first tap length filters out echoes of a far-end talker from a first near-end signal carrying voices of a near end talker according to a far-end signal carrying voices of the far-end talker to obtain a second near-end signal. The second adaptive filter having a second tap length less than the first tap length filters out echoes of the far-end talker from the first near-end signal according to the far-end signal to obtain a third near-end signal. The channel decoupling module generates a fourth near-end signal and subtracts the second near-end signal from the third near-end signal to obtain a fifth near-end signal. Finally, the frequency processing module obtains a six near-end signal.
    • 本发明提供一种全双工通信设备。 全双工通信设备包括第一自适应滤波器,第二自适应滤波器,信道解耦模块和频率处理模块。 具有第一抽头长度的第一自适应滤波器根据携带远端讲话者的语音的远端信号,从携带近端讲话者的语音的第一近端信号中滤除远端讲话者的回波,以获得 第二近端信号。 具有小于第一抽头长度的第二抽头长度的第二自适应滤波器根据远端信号从第一近端信号滤除远端讲话者的回波,以获得第三近端信号。 信道解耦模块产生第四近端信号,并从第三近端信号中减去第二近端信号,以获得第五近端信号。 最后,频率处理模块获得六个近端信号。
    • 6. 发明申请
    • BROADSIDE SMALL ARRAY MICROPHONE BEAMFORMING APPARATUS
    • 广泛的小阵列麦克风造粒设备
    • WO2008033639A2
    • 2008-03-20
    • PCT/US2007/076191
    • 2007-08-17
    • FORTEMEDIA, INC.ZHANG, MingPAI, Wan-chieh
    • ZHANG, MingPAI, Wan-chieh
    • H04R1/32
    • H04R3/005
    • A broadside small array microphone beamforming apparatus comprises first and second omni-directional microphones, a microphone calibration unit, and a directional microphone forming unit. The first and second omni-directional microphones respectively convert voice from a desired near-end talker into first and second signals. The second and first omni-directional microphones and the desired near-end talker are respectively arranged at three points of a triangle. The microphone calibration unit receives the first and second signals and correspondingly outputs first and second calibration signals. The directional microphone forming unit receives the first and second calibration signals to generate a first directional microphone signal with a bidirectional polar pattern. The adaptive channel decoupling unit receives the first calibration signal and the first directional microphone signal to generate a first main channel signal and a first reference channel signal for noise detection.
    • 宽边小型麦克风波束成形装置包括第一和第二全向麦克风,麦克风校准单元和定向麦克风形成单元。 第一和第二全向麦克风分别将来自期望的近端讲话者的语音转换为第一和第二信号。 第二和第一全向麦克风和所需的近端讲话者分别布置在三角形的三个点上。 麦克风校准单元接收第一和第二信号并相应地输出第一和第二校准信号。 定向麦克风形成单元接收第一和第二校准信号以产生具有双向极性图案的第一定向麦克风信号。 自适应信道解耦单元接收第一校准信号和第一定向麦克风信号以产生用于噪声检测的第一主信道信号和第一参考信道信号。
    • 7. 发明申请
    • MICROPHONE ARRAY IN HOUSING
    • 麦克风阵列住房
    • WO2008033638A2
    • 2008-03-20
    • PCT/US2007/076186
    • 2007-08-17
    • FORTEMEDIA, INC.ZHANG, MingCHEN, LiliZHANG, Bo
    • ZHANG, MingCHEN, LiliZHANG, Bo
    • H04R17/02
    • H04R1/406
    • An electronic device includes a circuit board, a first microphone module, and a second microphone module. The first microphone module includes a first omnidirectional microphone connected to the circuit board, a first boot also connected to the circuit board, and a first tube extending from the first boot. The second microphone module includes a second omnidirectional microphone connected to the circuit board, a second boot also connected to the circuit board, and a second tube extending from the second boot. The first and second omnidirectional microphones are identical, and the first and second boots are identical.
    • 电子设备包括电路板,第一麦克风模块和第二麦克风模块。 第一麦克风模块包括连接到电路板的第一全向麦克风,还连接到电路板的第一引导件以及从第一引导件延伸的第一管。 第二麦克风模块包括连接到电路板的第二全向麦克风,还连接到电路板的第二引导器以及从第二引导件延伸的第二管。 第一和第二全向麦克风是相同的,第一和第二靴子是相同的。
    • 9. 发明申请
    • SYSTEMS AND METHODS FOR COOLING ELECTRICAL EQUIPMENT
    • 冷却电气设备的系统和方法
    • WO2016057854A1
    • 2016-04-14
    • PCT/US2015/054789
    • 2015-10-08
    • INERTECH IP LLCZHANG, MingCOSTAKIS, John
    • ZHANG, MingCOSTAKIS, John
    • F25B1/00F24F11/02
    • F25B7/00F25B25/005F25B41/04F25B49/02F25B2500/18H05K7/20827
    • The cooling systems of the present disclosure include a first refrigerant circuit in thermal communication with a heat load and in fluid communication with a main condenser, a free cooling circuit in fluid communication with the main condenser and a free-cooled water source, a chilled water circuit in fluid communication with the main condenser and an evaporator, and a second refrigerant circuit in fluid communication with the evaporator and a secondary condenser. The free cooling circuit is in thermal communication with the first refrigerant circuit via the main condenser, the chilled water circuit is in thermal communication with the first refrigerant circuit via the main condenser, and the second refrigeration circuit is in thermal communication with the chilled water circuit and the free cooling circuit. The second refrigeration circuit cools a fluid flowing in the chilled water circuit. Methods of operating a cooling system are also disclosed.
    • 本公开的冷却系统包括与热负荷热连通并与主冷凝器流体连通的第一制冷剂回路,与主冷凝器流体连通的自由冷却回路和自由冷却水源,冷却水 与主冷凝器和蒸发器流体连通的电路,以及与蒸发器和次级冷凝器流体连通的第二制冷剂回路。 自由冷却回路通过主冷凝器与第一制冷剂回路热连通,冷水循环通过主冷凝器与第一制冷剂回路热连通,第二制冷回路与冷水回路 和自由冷却电路。 第二制冷回路冷却在冷水循环中流动的流体。 还公开了操作冷却系统的方法。