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61. 发明授权

US07054438B2 Method and apparatus for active reduction of speakerphone singing 有权
公开(公告)号：US07054438B2
公开(公告)日：2006-05-30
申请号：US10802504
申请日：2004-03-16
申请人： Richard Henry Erving , Robert Raymond Miller, II
发明人： Richard Henry Erving , Robert Raymond Miller, II
IPC分类号： H04M9/08
CPC分类号： H04M1/20 , H04M1/6033 , H04M9/08 , H04R3/02
摘要： In a speakerphone device identification of signals (i.e., voice input or speaker output) in a process for reducing acoustic feedback, in a communication device, is accomplished by adding a signature noise (i.e., an identification mark) to output signals radiated by the speaker to enable these signals to be separated from speech input to the microphone. Having identified the signal (i.e., speech output) likely to cause a “singing” phenomenon, appropriate insertion loss to reduce the feedback may be added to the appropriate speech path within the communication device, to reduce a probability of singing.

62. 发明申请

US20040174988A1 Method and apparatus for active reduction of speakerphone singing 有权
标题翻译：用于主动减少扬声器电话唱歌的方法和装置
公开(公告)号：US20040174988A1
公开(公告)日：2004-09-09
申请号：US10802504
申请日：2004-03-16
发明人： Richard Henry Erving , Robert Raymond Miller II
IPC分类号： H04M001/00 , H04M009/00
CPC分类号： H04M1/20 , H04M1/6033 , H04M9/08 , H04R3/02
摘要： In a speakerphone device identification of signals (i.e., voice input or speaker output) in a process for reducing acoustic feedback, in a communication device, is accomplished by adding a signature noise (i.e., an identification mark) to output signals radiated by the speaker to enable these signals to be separated from speech input to the microphone. Having identified the signal (i.e., speech output) likely to cause a nullsingingnull phenomenon, appropriate insertion loss to reduce the feedback may be added to the appropriate speech path within the communication device, to reduce a probability of singing.
摘要翻译：在扬声器装置中，在通信装置中，用于减少声反馈的处理中的信号（即，语音输入或扬声器输出）的识别是通过将签名噪声（即，识别标记）与由扬声器辐射的输出信号相加来实现的以使这些信号与语音输入分离成麦克风。在识别到可能引起“唱歌”现象的信号（即，语音输出）之后，可以将适当的插入损耗减少到通信装置内的适当语音路径，以减少唱歌的可能性。

63. 发明授权

US5867573A Telephone handset interface with feedback control 失效
标题翻译：电话听筒接口带反馈控制
公开(公告)号：US5867573A
公开(公告)日：1999-02-02
申请号：US597592
申请日：1996-02-06
申请人： Brian Albert Wittman
发明人： Brian Albert Wittman
IPC分类号： H04R3/00 , H03H9/00 , H04B3/20 , H04B3/23 , H04M1/20 , H04M1/60 , H04M9/08
CPC分类号： H04M9/08 , H04M1/20 , H04M1/60
摘要： A telephone handset interface reduces or eliminates feedback induced singing in a telephone handset/hybrid loop. The interface provides for user selectable volume control settings, each setting representing an amount of gain or loss to be applied to the transmit and receive signals within the telephone set. The gain settings are selected to limit overall loop gain so as to reduce or eliminate any tendency of the handset to sing at high receive gain levels. Loss inserted into the transmit circuit is removed when user speech is detected in the transmit circuit.
摘要翻译：电话听筒接口减少或消除了在电话听筒/混合环路中引起的反馈。该接口提供用户可选择的音量控制设置，每个设置表示应用于电话机内的发送和接收信号的增益或损失量。选择增益设置以限制总体环路增益，以便减少或消除手机在高接收增益水平下唱歌的任何趋势。当在发送电路中检测到用户语音时，插入到发送电路中的丢失被去除。

64. 发明授权

US5819183A Low-feedback compact wireless telephone 失效
公开(公告)号：US5819183A
公开(公告)日：1998-10-06
申请号：US262735
申请日：1994-06-20
申请人： Barry Voroba , Daniel E. Kobylarz , Carrie L. Zochert , Steven Maser , Marlyn J. Anderson
发明人： Barry Voroba , Daniel E. Kobylarz , Carrie L. Zochert , Steven Maser , Marlyn J. Anderson
IPC分类号： H04B1/38 , H04M1/20 , H04M1/58 , H04M1/725 , H04M9/08 , H04Q7/32
CPC分类号： H04M9/08 , H04B1/385 , H04M1/20 , H04M1/585 , H04M1/725
摘要： The present invention is directed to apparatus and methods for reducing sidetone feedback in a portable wireless telephone system by positioning the speaker and the microphone to reduce acoustic feedback and by controlling the amplifier gain in the transmitter section of the wireless telephone to reduce amplification of sidetone which has been acoustically coupled from the speaker to the microphone. The wireless telephone may be configured as a watch with a wrist strap for retaining it to the user, as a piece of jewelry such as a brooch or pendant, as a voice capable pager/intercom, or as an identification badge for an employee. In one embodiment, the base station includes circuitry for further reducing sidetone feedback. In additional embodiments, the wireless telephone may include a quick-release outboard battery, a retractable earpiece, and an ergonomic keypad.

65. 发明授权

US5121426A Loudspeaking telephone station including directional microphone 失效
标题翻译：扬声电话台包括定向麦克风
公开(公告)号：US5121426A
公开(公告)日：1992-06-09
申请号：US455128
申请日：1989-12-22
申请人： John C. Baumhauer, Jr. , Jeffrey P. McAteer , Brian A. Wittman
发明人： John C. Baumhauer, Jr. , Jeffrey P. McAteer , Brian A. Wittman
IPC分类号： H04R3/02 , H04M1/20 , H04M1/60 , H04M1/62 , H04M9/08 , H04R1/34 , H04R1/38 , H04R1/40 , H04R27/00
CPC分类号： H04R1/342 , H04M1/20 , H04M1/62 , H04M9/082 , H04R27/00 , H04R1/38
摘要： A loudspeaking telephone station (speakerphone) includes a loudspeaker and one or more microphones within the same housing. The microphones are directional, each having a polar response characteristic that includes a major lobe, one or more side lobes, and nulls between pairs of lobes. The loudspeaker is positioned in the null of the polar response characteristic that resides between the major lobe and an adjacent side lobe. The microphone apparatus is positioned so that its major lobe is aimed in a direction that is generally perpendicular to the direction that the loudspeaker is aimed. Means are provided for increasing the distance between input sound ports of a first-order-gradient (FOG) microphone and thereby improving its sensitivity. A pair of such improved FOG microphones are used in assembling a second-order-gradient microphone. Full duplex operation is achieved when a pair of echo cancelers are added to further reduce the coupling between the transmit and receive directions of the speakerphone.
摘要翻译：扬声器电话（扬声器）包括扬声器和同一外壳内的一个或多个麦克风。麦克风是定向的，每个麦克风具有极性响应特性，其包括主瓣，一个或多个旁瓣，以及叶对之间的零点。扬声器位于主瓣和相邻旁瓣之间的极性响应特性的零点。麦克风装置被定位成使得其主瓣朝向一般垂直于扬声器瞄准方向的方向。提供了用于增加一阶梯度（FOG）麦克风的输入声音端口之间的距离并从而提高其灵敏度的装置。在组装二阶梯度麦克风时使用一对这样改进的FOG麦克风。当添加一对回声消除器以进一步减少扬声器的发送和接收方向之间的耦合时，实现全双工操作。

66. 发明授权

US5042071A Acoustic insulator for a telephone handset microphone 失效
标题翻译：用于电话听筒麦克风的隔音器
公开(公告)号：US5042071A
公开(公告)日：1991-08-20
申请号：US467098
申请日：1990-01-18
申请人： Robert J. Stinauer , Michael A. Stein
发明人： Robert J. Stinauer , Michael A. Stein
IPC分类号： H04M1/03 , H04M1/20
CPC分类号： H04M1/20 , H04M1/03
摘要： An apparatus to isolate a microphone from the speaker audio of a telephone handset, preventing feedback howl. The acoustic insulator consists of a single piece of pliable material that has a smaller diameter element (104) that extends through the handset housing. A hollow passage (102) extends the length of the insulator. The microphone (101) is inserted into the insulator in the larger diameter element (103). The insulator is held in the housing by overlapping ridges (105) encircling the outside of the larger element (103).

67. 发明授权

US4864611A Telephone handset attachment for use in-the-ear hearing aids 失效
标题翻译：电话听筒附件，用于耳内助听器
公开(公告)号：US4864611A
公开(公告)日：1989-09-05
申请号：US124973
申请日：1987-11-24
申请人： Keld T. Helmuth
发明人： Keld T. Helmuth
IPC分类号： H04M1/20 , H04M1/247 , H04R25/00
CPC分类号： H04M1/2475 , H04M1/20 , H04R25/48 , H04R25/456
摘要： An attachment for a telephone handset used by users of in-the-ear hearing aids including a cup shaped member which acoustically couples the handset to the ear and serves to cancel feedback between the hearing aid receiver and microphone.
摘要翻译：用于由耳内助听器的用户使用的电话听筒的附件，包括将手机声音耦合到耳朵并用于取消助听器接收器和麦克风之间的反馈的杯形构件。

68. 发明授权

US3889058A Telephone systems with reduced acoustic feedback 失效
标题翻译：具有减少声音反馈的电话系统
公开(公告)号：US3889058A
公开(公告)日：1975-06-10
申请号：US31580772
申请日：1972-12-18
申请人： ARD ANSTALT
发明人： GABR SAAD ZAGHOUL MOHAMED
IPC分类号： H04M1/20 , H04M1/56 , H04M9/00 , H04M1/22
CPC分类号： H04M9/001 , H04M1/20 , H04M1/56
摘要： Feedback in an electro-acoustic transducer unit for connection into a two-way communication system is reduced or eliminated by acoustic means dependent on relative positioning of loudspeaker and one or more microphones, or electrically, by cancellation of signals due to unwanted sound components derived from a pair of microphones. The operation of the microphone and loudspeaker can be alternated at an ultrasonic frequency or a single transducer can be used as microphone and loudspeaker alternately at such a frequency. A transducer having a pair of speech coils in pushpull formation is described, as well as a laminated structure for use in the housing of the apparatus.

69. 发明授权

US2190466A Telephone substation apparatus 失效
公开(公告)号：US2190466A
公开(公告)日：1940-02-13
申请号：US16789437
申请日：1937-10-08
申请人： BELL TELEPHONE LABOR INC
发明人： BENNETT ARTHUR F
IPC分类号： H04M1/20
CPC分类号： H04M1/20

70. 发明授权

US10623544B1 Electronic device including a directional microphone 有权
公开(公告)号：US10623544B1
公开(公告)日：2020-04-14
申请号：US15485685
申请日：2017-04-12
申请人： Sorenson IP Holdings, LLC
发明人： Jeffrey Charles Bullough , D. Mark Parry
IPC分类号： H04M1/19 , H04M1/03 , H04M1/20 , H04M1/62 , H04R1/34 , H04R1/02 , H04R1/28
CPC分类号： H04M1/19 , H04M1/03 , H04M1/20 , H04M1/62 , H04R1/028 , H04R1/2876 , H04R1/342
摘要： An electronic device may include a housing and a directional microphone. The housing may include a front surface, a rear surface positioned opposite the front surface, and a hollow cavity positioned between the front surface and the rear surface. The hollow cavity may include a front opening defined in the front surface and a rear opening defined in the rear surface. The directional microphone may include a front port and a rear port. The directional microphone may be mounted in the hollow cavity of the housing with the front port oriented toward the front opening and with the rear port oriented toward the rear opening.

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