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1. 发明申请

WO1998018292A1 ARCHITECTURE FOR A UNIVERSAL SERIAL BUS-BASED PC SPEAKER CONTROLLER 审中-公开
标题翻译：通用串行总线型PC扬声器控制器的架构
公开(公告)号：WO1998018292A1
公开(公告)日：1998-04-30
申请号：PCT/US1997019478
申请日：1997-10-22
申请人： ADVANCED MICRO DEVICES, INC.
发明人： ADVANCED MICRO DEVICES, INC. , GULICK, Dale, E.
IPC分类号： H04R03/00
CPC分类号： H04R3/00
摘要： There is provided a novel powered loudspeaker implemented to be compatible with the USB specification. The powered speaker includes a speaker driven by a power amplifier coupled to a power supply. Both the amplifier and the power supply, in turn, are coupled to a USB controller. The controller is configured to provide USB functionality and compatibility. In addition, it provides a phase locked loop (PLL) for recovering a timer clock from the received data stream. The present invention further includes a function whereby the absence of data on the relevant channel is detected and the output to the speakers is muted in response thereto. A further circuit is provided that controls when the output to the speaker is turned on such that no clicks or pops occur at power-up or when the device or bus is not stable. In addition, tone control, including base and treble filters, volume control, and balance between left and right outputs (in a stereo version) are provided. Furthermore, power management functionality is provided. If the USB has been idle for a predetermined period of time, the system can place itself into a low power sleep mode, or the loudspeaker can be placed into a sleep mode via software from the host.
摘要翻译：提供了一种实现与USB规范兼容的新型有源扬声器。有源扬声器包括由耦合到电源的功率放大器驱动的扬声器。放大器和电源又连接到USB控制器。控制器配置为提供USB功能和兼容性。另外，它提供了一种用于从接收到的数据流中恢复定时器时钟的锁相环（PLL）。本发明还包括一个功能，其中检测到相关信道上的数据不存在，并且响应于此扬声器的输出被静音。提供另一电路，用于控制扬声器的输出何时被接通，使得在上电时或当设备或总线不稳定时不会发生点击或咔嗒声。此外，还提供了音调控制，包括基本和高音滤波器，音量控制以及左右输出之间的平衡（立体声版本）。此外，还提供电源管理功能。如果USB已经空闲了预定的时间段，则系统可以将自己置于低功率睡眠模式，或者可以通过来自主机的软件将扬声器置于睡眠模式。

2. 发明申请

WO1996007292A1 METHOD AND APPARATUS FOR A SEQUENTIAL INTERFACE BETWEEN AN AUDIO SIGNAL AND AN ELECTRO-ACOUSTIC TRANSDUCER 审中-公开
标题翻译：音频信号与电声传感器之间的顺序接口的方法和装置
公开(公告)号：WO1996007292A1
公开(公告)日：1996-03-07
申请号：PCT/FR1995001119
申请日：1995-08-25
申请人： PICCALUGA, Pierre , PERRICHON, Claude, Annie
IPC分类号： H04R03/00
CPC分类号： H04R3/00 , H04R3/04
摘要： The present invention concerns a method providing a periodic sequential processing operation, whereby the audio signal is subjected to electrical time constraints. The process comprises temporarily inserting solid-state semiconductors into the audio electrical circuit. The sequential interface electrical apparatus provides at least two different electrically active thresholds, whereby at least one electrical component of the semi-conductor type, with activity times occurring in a regular cycle and in frequency periods of 10 Khz to 500 Khz, is inserted into any section of a sound reproduction line. The method and apparatus of the invention are for use in the field of audio and audio-visual equipment.
摘要翻译：本发明涉及一种提供周期性顺序处理操作的方法，由此音频信号经受电时间限制。该方法包括将固态半导体临时插入到音频电路中。顺序接口电气设备提供至少两个不同的电活动阈值，由此将具有活动时间的半导体类型的至少一个电气部件以规定的周期和频率周期为10KHz至500KHz的情况插入任何声音再现线的一部分。本发明的方法和装置用于音视频设备领域。

3. 发明申请

WO1995020304A1 DEVICE FOR AUTOMATICALLY SWITCHING BETWEEN THE ELECTROACOUSTIC TRANSDUCER(S) OF A RADIO RECEIVER AND THE AUDIO-FREQUENCY OUTPUT OF A RADIOTELEPHONE, AND EQUIPMENT PROVIDED THEREWITH 审中-公开
标题翻译：无线电接收机的电波传感器与无线电话的音频输出之间进行自动切换的设备及其提供的设备
公开(公告)号：WO1995020304A1
公开(公告)日：1995-07-27
申请号：PCT/FR1995000074
申请日：1995-01-24
申请人： S.A. C3EM (CONCEPTION ETUDE ENTRETIEN ELECTRONIQUE ET MECANIQUE) , MASSIP, Jean-Claude
发明人： S.A. C3EM (CONCEPTION ETUDE ENTRETIEN ELECTRONIQUE ET MECANIQUE)
IPC分类号： H04R03/00
CPC分类号： H04B1/3805 , H04R3/00
摘要： A switching device comprising electrical outputs (7D, 7G) electrically connected to speakers (4), a first set of inputs (8D, 8G) connected respectively to the left and right audio-frequency outputs of a radio receiver such as a car radio, and a second set of inputs (9D, 9G) electrically connected to the audio-frequency output of a radiotelephone. When an audio-frequency signal is present at the second set of inputs, a controller (11) outputs a control signal to the control input (10) of an inverter switch unit (6) to connect the speakers (4) to the radiotelephone.
摘要翻译：一种开关装置，包括电连接到扬声器（4）的电气输出（7D，7G），分别连接到诸如汽车无线电的无线电接收机的左和右音频输出的第一组输入（8D，8G）以及电连接到无线电话的音频输出的第二组输入（9D，9G）。当在第二组输入端存在音频信号时，控制器（11）向逆变器开关单元（6）的控制输入端（10）输出控制信号，以将扬声器（4）连接到无线电话机。

4. 发明申请

WO1997048252A1 METHOD AND APPARATUS FOR LOCALIZATION OF AN ACOUSTIC SOURCE 审中-公开
标题翻译：用于本地化声源的方法和装置
公开(公告)号：WO1997048252A1
公开(公告)日：1997-12-18
申请号：PCT/US1997007850
申请日：1997-05-08
申请人： PICTURETEL CORPORATION
发明人： PICTURETEL CORPORATION , CHU, Peter, L. , WONG, Hong
IPC分类号： H04R03/00
CPC分类号： H04S1/007 , H04N7/15 , H04R3/005 , H04R2201/401 , H04R2201/403 , H04R2201/405
摘要： An acoustic signal processing method and system using a pair of spatially separated microphones (10, 11) to obtain the direction (80) or location of speech or other acoustic signals from a common sound source (2) are disclosed. The invention includes a method and apparatus for processing the acoustic signals by determining whether signals acquired during a particular time frame represent the onset (45) or beginning of a sequence of acoustic signals from the sound source, identifying acoustic received signals representative of the sequence of signals, and determining the direction (80) of the source based upon the acoustic received signals. The invention has applications to videoconferencing where it may be desirable to automatically adjust a video camera, such as by aiming the camera in the direction of a person who has begun to speak.
摘要翻译：公开了一种使用一对空间分离的麦克风（10,11）从公共声源（2）获得语音或其他声音信号的方向（80）或位置的声信号处理方法和系统。本发明包括一种用于通过确定在特定时间帧期间获取的信号是否表示来自声源的声信号序列的开始（45）或开始来处理声信号的方法和装置，识别代表声源的序列的声接收信号信号，并且基于声音接收信号确定源的方向（80）。本发明适用于视频会议，其中可能期望自动调整摄像机，例如通过将相机朝向已经开始说话的人的方向瞄准。

5. 发明申请

WO1997021321A1 PHOTOTHERMAL ACOUSTIC DEVICE 审中-公开
标题翻译：光电声装置
公开(公告)号：WO1997021321A1
公开(公告)日：1997-06-12
申请号：PCT/US1996019696
申请日：1996-12-06
申请人： KOLE, Stephen, G.
IPC分类号： H04R03/00
CPC分类号： H04R23/004
摘要： A photothermal apparatus is provided for controllably heating and cooling a gas in order to alter and thereby control the acoustic, mechanical or optical properties of the gas. For acoustic applications, the photothermal device may be used to heat and cool the gas in order to generate three-dimensional spatially-located sound corresponding to an electrical audio signal (102, 104, 106). Also, the photothermal device may be used to generate a three-dimensional sound shield around a noise source in order to prevent the propagation of sound waves from the noise source. It may also be used to controllably heat and cool a gas to thereby provide mechanical energy or force for moving an object.
摘要翻译：提供了一种用于可控制地加热和冷却气体的光热装置，以改变和控制气体的声学，机械或光学性质。对于声学应用，光热装置可以用于加热和冷却气体，以便产生对应于电音频信号（102,104,106）的三维空间定位的声音。此外，光热装置可以用于在噪声源周围产生三维声屏蔽，以防止声波从噪声源传播。它也可以用于可控制地加热和冷却气体，从而提供用于移动物体的机械能或力。

6. 发明申请

WO1997002719A1 AUDIO SIGNAL REPRODUCTION APPARATUS 审中-公开
标题翻译：音频信号再现设备
公开(公告)号：WO1997002719A1
公开(公告)日：1997-01-23
申请号：PCT/IB1996000621
申请日：1996-06-28
申请人： PHILIPS ELECTRONICS N.V. , PHILIPS NORDEN AB
发明人： PHILIPS ELECTRONICS N.V. , PHILIPS NORDEN AB , BIRD, Neil, Christopher
IPC分类号： H04R03/00
CPC分类号： H03G3/32 , H03G7/002 , H04R5/04 , H04R2420/01
摘要： Audio signal reproduction apparatus, for example an in-car entertainment system comprises a number of audio signal sources (I-I to I-N) which are selected by means of a selector (2) and fed to an AGC circuit (4) before being applied to an amplifier (6) and loudspeaker (7). The AGC circuit (4) comprises an amplitude analyser (42) and a low pass filter (43) to produce an output signal (44) which controls the gain of an amplifier (41). The arrangement is such that the AGC circuit only causes a gain change when the audio signal lies outside a predetermined amplitude band for a given minimum time period. Thus only long "too loud" or "too soft" passages cause a gain change and transients pass through the arrangement without causing a gain change.
摘要翻译：音频信号再现装置，例如车载娱乐系统包括多个音频信号源（II至IN），它们通过选择器（2）选择并被馈送到AGC电路（4），然后被施加到一个放大器（6）和扬声器（7）。 AGC电路（4）包括幅度分析器（42）和低通滤波器（43），以产生控制放大器（41）的增益的输出信号（44）。这种布置使得当音频信号在给定的最小时间周期之前位于预定幅度频带之外时，AGC电路仅引起增益改变。因此，只有长时间的“太大”或“太软”通道会导致增益变化和瞬变通过安排而不会导致增益变化。

7. 发明申请

WO1995012961A1 GRADIENT DIRECTIONAL MICROPHONE SYSTEM AND METHOD THEREFOR 审中-公开
标题翻译：梯度方向麦克风系统及其方法
公开(公告)号：WO1995012961A1
公开(公告)日：1995-05-11
申请号：PCT/US1994010951
申请日：1994-09-29
申请人： MOTOROLA INC.
发明人： MOTOROLA INC. , BRADLEY, Wayne, Hart , WERNER, Richard, Earl
IPC分类号： H04R03/00
CPC分类号： H04R1/406 , H04R3/005 , H04R25/405 , H04R25/407
摘要： A gradient directional microphone system (100) and method therefor includes three microphones (101, 103, 105) and a processor (107). Each of the three microphones (101, 103, 105) have substantially the same gradient order (135, 137, 139) and frequency response. Each microphone produces an electrical signal (109, 111, 113) that is responsive to sound pressure (119, 121, 123) at each microphone (101, 103, 105). The processor (107) is coupled to receive the electrical signal (109, 111, 113) from each microphone (101, 103, 105), and operative to produce an output signal (131) for the gradient directional microphone system (100) having a gradient order (141) at least two gradient orders higher than the gradient order (135, 137, 139) of each of the three microphones (101, 103, 105). Using the present invention, the size and complexity of the gradient directional microphone system (100) is substantially reduced over that of the prior art.
摘要翻译：梯度定向麦克风系统（100）及其方法包括三个麦克风（101,103,105）和一个处理器（107）。三个麦克风（101,103,105）中的每一个具有基本相同的梯度顺序（135,137,139）和频率响应。每个麦克风产生响应每个麦克风（101,103,105）处的声压（119,121,123）的电信号（109,111,113）。处理器（107）被耦合以从每个麦克风（101,103,105）接收电信号（109,111,113），并且可操作地产生用于梯度定向麦克风系统（100）的输出信号（131），其具有梯度顺序（141）至少两个梯度顺序高于三个麦克风（101,103,105）中的每一个的梯度顺序（135,137,139）。使用本发明，梯度定向麦克风系统（100）的尺寸和复杂性比现有技术的大大降低。

8. 发明申请

WO1993001690A1 MICROPHONE WITH CONCEALED PORT 审中-公开
标题翻译：麦克风与隐形港口
公开(公告)号：WO1993001690A1
公开(公告)日：1993-01-21
申请号：PCT/US1992005579
申请日：1992-07-02
申请人： MOTOROLA, INC.
发明人： MOTOROLA, INC. , DAVIS, James, T. , DEL SESTO, Antonio , WILLIAMS, William, R. , BADIE, Mehrdad
IPC分类号： H04R03/00
CPC分类号： H04R1/342 , H04R1/08
摘要： Briefly, according to the invention, a microphone apparatus (100) for converting sound waves to electrical signals is described. The microphone apparatus (100) includes a switch (118) for initiating the occurrence of an event. The switch (118) being substantially covered by a cap (102). The microphone apparatus (100) also includes a microphone port (114) disposed substantially behind the cap (102), thus minimizing the obstruction of the microphone port (114).

9. 发明申请

WO1998026631A1 POWER SUPPLY FOR MICROPHONE 审中-公开
标题翻译：麦克风供电
公开(公告)号：WO1998026631A1
公开(公告)日：1998-06-18
申请号：PCT/DK1996000521
申请日：1996-12-11
申请人： GN NETCOM A/S , BACKRAM, Lars , BACKRAM, Hans-Erik , GUSTAFSSON, Börje
发明人： GN NETCOM A/S
IPC分类号： H04R03/00
CPC分类号： H04R19/016 , H04R3/00
摘要： The invention concerns a circuit for the amplification of signals from a microphone, comprising a power source and a current generator which supplies a microphone, such as an electret microphone, with electrical energy in the form of pulses. The circuit clocks the power supply to the microphone with an active pulse time t1, and the sampling circuit reads the microphone signal in a window with the duration t2 calculated from the rear flank of the active part of the supply pulse, whereby t1 is shorter than the time period T corresponding to the sampling frequency 1/T, and whereby t1 is of a length which is sufficient to enable the microphone current to reach a usable value, and whereby t2 can be shorter than t1.
摘要翻译：本发明涉及用于放大来自麦克风的信号的电路，包括电源和电流发生器，该电源和电流发生器以脉冲形式的电能提供诸如驻极体麦克风的麦克风。电路以有效脉冲时间t1对麦克风的电源供电，采样电路在窗口中读取麦克风信号，其持续时间为t2，从供电脉冲的有效部分的后端计算，因此t1短于对应于采样频率1 / T的时间段T，由此t1的长度足以使麦克风电流达到可用值，并且由此t2可以短于t1。

10. 发明申请

WO1998009477A1 SIGNAL CORRECTING DEVICE, SIGNAL CORRECTING METHOD, AND COEFFICIENT ADJUSTING DEVICE AND COEFFICIENT ADJUSTING METHOD FOR SIGNAL CORRECTING DEVICE 审中-公开
标题翻译：信号校正装置，信号校正方法和系数调整装置及信号校正装置的系数调整方法
公开(公告)号：WO1998009477A1
公开(公告)日：1998-03-05
申请号：PCT/JP1997002913
申请日：1997-08-21
申请人： ONKYO CORPORATION , TAKEMURA, Kazumasa , KASAI, Joji , NAKATAKE, Tetsuro
发明人： ONKYO CORPORATION
IPC分类号： H04R03/00
CPC分类号： H04R3/00
摘要： A signal correcting device (12) which can easily, quickly, and surely correct the characteristics of a transmission system, such as the loudspeaker, etc., having nonlinearity. The signal correcting device (12) supplies input signals (u) to a transmission system (14) after correcting the signals (u) so that the characteristics of the system (10) can approach specified target characteristics. A displacement filter (16) predicts virtual displacement (x) based on the signals (u) by using a filter factor decided based on the target characteristics. A correction factor deciding section (18) decides part of the filter factor of a correction filter (22) based on the virtual displacement (x). The section (18) also decides the amplitude adjusting factor of an amplitude adjusting section (24) based on the displacement (x). The filter (22) is constituted of a second-order or higher digital filter having a feedback loop and corrects the input signals (u) by using the decided filter factor. The amplitude adjusting section (24) adjusts the amplitude adjusting factor. The filter (22) and the section (24) constitute a signal correcting means (20).
摘要翻译：一种信号校正装置（12），其能够容易，快速且可靠地校正具有非线性的诸如扬声器等的传输系统的特性。在校正信号（u）之后，信号校正装置（12）向传输系统（14）提供输入信号（u），使得系统（10）的特性可以接近特定的目标特性。位移滤波器（16）通过使用基于目标特性决定的滤波器因子，基于信号（u）来预测虚拟位移（x）。校正因子确定部分（18）基于虚拟位移（x）来确定校正滤波器（22）的滤波器因子的一部分。部分（18）还基于位移（x）来确定幅度调节部分（24）的振幅调整因子。滤波器（22）由具有反馈回路的二阶或更高数字滤波器构成，并通过使用所确定的滤波因子来校正输入信号（u）。振幅调整部（24）调整振幅调整系数。滤波器（22）和部分（24）构成信号校正装置（20）。

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