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1. 发明申请

US20180033455A1 ESTIMATION OF BACKGROUND NOISE IN AUDIO SIGNALS 审中-公开
公开(公告)号：US20180033455A1
公开(公告)日：2018-02-01
申请号：US15782299
申请日：2017-10-12
申请人： Telefonaktiebolaget LM Ericsson (publ)
发明人： Martin SEHLSTEDT
IPC分类号： G10L25/84 , G10L19/24 , G10L21/0208 , G10L25/21 , G10L19/18 , G10L21/0216 , G10L25/06 , G10L25/78
CPC分类号： G10L21/0208 , G10L19/18 , G10L19/24 , G10L21/0216 , G10L25/06 , G10L25/21 , G10L25/78 , G10L25/84 , G10L2025/783 , G10L2025/786 , H04M1/62 , H04W8/22
摘要： The invention relates to a background noise estimator and a method therein, for supporting sound activity detection in an audio signal segment. The method comprises reducing a current background noise estimate when the audio signal segment is determined to comprise music and the current background noise estimate exceeds a minimum value. This is to be performed when an energy level of an audio signal segment is more than a threshold higher than a long term minimum energy level, lt_min, which is determined over a plurality of preceding audio signal segments, or, when the energy level of the audio signal segment is less than a threshold higher than lt_min, but no pause is detected in the audio signal segment.

2. 发明授权

US09807215B2 Sound emission and collection device, and sound emission and collection method 有权
公开(公告)号：US09807215B2
公开(公告)日：2017-10-31
申请号：US15304159
申请日：2015-04-14
申请人： Yamaha Corporation
发明人： Satoshi Ukai , Takashi Yamakawa
IPC分类号： H04M1/60 , H04M9/08 , H04M1/62
CPC分类号： H04M1/6033 , H04M1/6016 , H04M1/62 , H04M9/082 , H04M2203/509
摘要： A sound emission and collection device includes a speaker, a filter processing a sound emission signal, microphones, echo cancellers cancelling regression sound signals of the sound emitted by the speaker from the sound collection signals of the corresponding microphones, a first integration section integrating adaptive filter coefficients taken out from the plurality of echo cancellers, a reverberation time estimation section estimating the reverberation time for each frequency band in the space in which the speaker and the plurality of microphones are present on the basis of the integrated adaptive filter coefficient, and an arithmetic operation section specifying a frequency band having a long reverberation time from the sound emission signal based on the estimated reverberation time, calculating a filter coefficient for suppressing power of the specified frequency band, and setting the filter coefficient to the filter.

3. 发明申请

US20170186447A1 Estimation of Background Noise in Audio Signals 审中-公开
公开(公告)号：US20170186447A1
公开(公告)日：2017-06-29
申请号：US15446634
申请日：2017-03-01
申请人： Telefonaktiebolaget LM Ericsson (publ)
发明人： Martin Sehlstedt
IPC分类号： G10L25/84 , G10L25/21 , G10L19/24 , G10L25/06
CPC分类号： G10L21/0208 , G10L19/18 , G10L19/24 , G10L21/0216 , G10L25/06 , G10L25/21 , G10L25/78 , G10L25/84 , G10L2025/783 , G10L2025/786 , H04M1/62 , H04W8/22
摘要： The invention relates to a background noise estimator and a method therein, for supporting sound activity detection in an audio signal segment. The method comprises reducing a current background noise estimate when the audio signal segment is determined to comprise music and the current background noise estimate exceeds a minimum value. This is to be performed when an energy level of an audio signal segment is more than a threshold higher than a long term minimum energy level, lt_min, which is determined over a plurality of preceding audio signal segments, or, when the energy level of the audio signal segment is less than a threshold higher than lt_min, but no pause is detected in the audio signal segment.

4. 发明授权

US07298862B2 Asymmetrical loudspeaker enclosures with enhanced low frequency response 有权
标题翻译：具有增强的低频响应的不对称扬声器外壳
公开(公告)号：US07298862B2
公开(公告)日：2007-11-20
申请号：US10669138
申请日：2003-09-22
申请人： Stephane Dedieu , Philippe Moquin , Anders Fahrendorff
发明人： Stephane Dedieu , Philippe Moquin , Anders Fahrendorff
IPC分类号： H04R25/00
CPC分类号： H04R1/22 , H04M1/03 , H04M1/62
摘要： An embedded loudspeaker system is set forth incorporating at least two asymmetric enclosures having different but overlapping frequency responses in order to achieve a substantially flat frequency response. At least one of the speaker enclosures is preferably ported (bass-reflex system) to provide as much output as possible in the low-frequency range. By using a plurality of speakers at least one of which has a bass reflex enclosure, a monophonic system is provided with a flat frequency response. The dimensions of the speaker enclosures are chosen such that the anti-resonance of one loudspeaker enclosure is compensated for by the resonance of another speaker enclosure, without making use of damping, so that no “notch” appears in the frequency response of the combined system at the listening position.
摘要翻译：提出了一种嵌入式扬声器系统，其包括具有不同但重叠的频率响应的至少两个不对称壳体，以实现基本平坦的频率响应。扬声器外壳中的至少一个优选地被插入（低音反射系统）以在低频范围内提供尽可能多的输出。通过使用其中至少一个具有低音反射外壳的多个扬声器，单音系统被提供有平坦的频率响应。选择扬声器外壳的尺寸，使得一个扬声器外壳的反共振由另一个扬声器外壳的谐振补偿，而不利用阻尼，使得组合系统的频率响应中不会出现“陷波” 在聆听的位置。

5. 发明申请

US20040198242A1 Multi-function telephone handset 失效
标题翻译：多功能电话听筒
公开(公告)号：US20040198242A1
公开(公告)日：2004-10-07
申请号：US10194060
申请日：2002-07-15
发明人： Sheng Hsin Liao
IPC分类号： H04B001/38
CPC分类号： H04M1/62 , H04M1/02 , H04M1/05 , H04M1/6041
摘要： A multi-function telephone handset comprises a handset body on which is defined a receiving space, and a holding element to which is mounted a receiver and a transmitter. Two opposite portions of the handset body are respectively formed in a receiver part and a transmitter part respectively provided with sound holes. The holding element, with the receiver and the transmitter thereto connected, is detachably placed in the receiving space of the handset body. The telephone handset can be thereby configured to in a manner to perform either a conventional telephonic communication by manually holding the telephone handset, or a hand-free telephonic communication can be achieved by carrying the holding element on the user's head.
摘要翻译：多功能电话听筒包括：手机主体，其上定义有接收空间;以及保持元件，其上安装有接收器和发送器。手机主体的两个相对部分分别形成在分别设置有声孔的接收器部分和发送器部分中。具有接收器及其连接的发送器的保持元件可拆卸地放置在手机主体的接收空间中。因此，电话手机可以以通过手动保持电话听筒进行常规电话通信的方式配置，或者可以通过在用户头部上携带保持元件来实现免提电话通信。

6. 发明申请

US20010006905A1 Hands-free cellular telephone base with privacy switch unit for switching between privacy and broadcast modes 审中-公开
标题翻译：免提蜂窝电话基座，具有隐私切换单元，用于切换隐私和广播模式
公开(公告)号：US20010006905A1
公开(公告)日：2001-07-05
申请号：US09751201
申请日：2000-12-29
发明人： Chu-Chai Hong
IPC分类号： H04B001/16
CPC分类号： H04M1/04 , H04B1/3877 , H04M1/62
摘要： A hands-free cellular telephone base includes a privacy switch unit having a contact switch and a spring-biased switch actuator. The contact switch is mounted in a housing and is operable to control operation of a control circuit unit between a privacy mode and a broadcast mode. The switch actuator is mounted movably on the housing and is movable from a normal position, where the switch actuator does not actuate the contact switch for operation in the privacy mode, and a pressed position, where the switch actuator actuates the contact switch for operation in the broadcast mode. A magnet member is disposed in the housing such that, when an earphone is disposed adjacent to the switch actuator, the magnet member will attract with the earphone, thereby forcing the switch actuator to the pressed position against biasing action of the spring.
摘要翻译：免提蜂窝电话基座包括具有接触开关和弹簧偏置开关致动器的隐私开关单元。接触开关安装在壳体中，并且可操作以在隐私模式和广播模式之间控制控制电路单元的操作。开关致动器可移动地安装在壳体上并且可从正常位置移动，其中开关致动器不致动接触开关以在隐私模式下操作，以及按压位置，其中开关致动器致动接触开关以在广播模式。磁体构件设置在壳体中，使得当耳机靠近开关致动器设置时，磁体构件将与耳机一起吸引，由此迫使开关致动器抵抗弹簧的偏压作用。

7. 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。

8. 发明授权

US4694486A Combined telephone-table system 失效
标题翻译：综合电话表系统
公开(公告)号：US4694486A
公开(公告)日：1987-09-15
申请号：US580827
申请日：1984-04-10
申请人： Seymour C. Yuter
发明人： Seymour C. Yuter
IPC分类号： H04M1/02 , H04M1/62 , H04M1/15
CPC分类号： H04M1/02 , H04M1/62
摘要： The specfication and drawings disclose a combined telephone-lamp-speaker system for use in a restaurant having a telephone ordering system. An integral support structure is adapted to be supported on a table, or on a wall adjacent a table. Mounted on the support structure are a lamp enclosure, a telephone and a speaker. Telephone ring current detection means responds to telephone ring current to interrupt the lamp light to signal that the phone is being rung. The speaker is mounted wthin the lamp enclosure. Switching means permit the feeding of a telephone conversation into the audio amplifier which drives the speaker so that a telephone conversation can be played on the speaker. Additional disclosed features include a cable of sufficient length to extend via a hole in the table though a pedestal and past the pedestal's base to be plugged into the central cable system and then retracted beneath the base. Also disclosed is a lever-operated snap switch responsive to the telephone's ringer to interrupt the lamp light.
摘要翻译：说明书和附图公开了一种用于具有电话订购系统的餐厅的组合电话灯扬声器系统。整体支撑结构适于支撑在桌子上或邻近桌子的墙壁上。安装在支撑结构上的是灯罩，电话和扬声器。电话环电流检测装置响应电话环电流来中断灯光，以指示电话正在升级。扬声器安装在灯泡外壳上。切换装置允许将电话通话馈送到驱动扬声器的音频放大器中，使得可以在扬声器上播放电话对话。附加公开的特征包括足够长度的电缆，其通过台座经由台座的孔延伸并经过基座的基座，以插入中心电缆系统中，然后在基座下方缩回。还公开了响应于电话铃声以中断灯光的杠杆操作的快门开关。

9. 发明授权

US4365118A Connection arrangement in a telephone instrument for connecting an additional speech device 失效
标题翻译：用于连接附加语音设备的电话设备中的连接布置
公开(公告)号：US4365118A
公开(公告)日：1982-12-21
申请号：US187841
申请日：1979-10-15
申请人： Borje L. Lindman , Leif Branden
发明人： Borje L. Lindman , Leif Branden
IPC分类号： H04M1/02 , H04M1/62 , H04M1/08
CPC分类号： H04M1/62 , H04M1/02
摘要： The connection arrangement according to the present invention is primarily intended to connect a loudspeaking device instead of the normal lowspeaking device (receiver in the handset) in a telephone instrument of the "DIAVOX" type. The arrangement includes an extra push button (1) mounted on a circuit card (22) in the instrument. A cam shaft relay (4, 5), known per se, is mounted near the push button support (1e) and on the card. The cam shaft relay is provided with a control member (5) having a first position which corresponds to the rest state of the instrument. Under the influence of the hook switch plunger (18) of the instrument, the control member (5) can be set to a second position corresponding to the lowspeaking state. The push button is provided with tipping element (2) which, when the button is depressed, actuates the control member (5) to set it to a third position corresponding to the loudspeaking state of the instrument.
摘要翻译： PCT No.PCT / SE79 / 00051 Sec。 371日期1979年11月10日 102（e）1979年10月15日，PCT提交1979年3月9日PCT公布。第WO79 / 00824号公报 1979年10月18日的日期。根据本发明的连接装置主要是在“DIAVOX”类型的电话仪器中连接扬声装置而不是正常的低扬声装置（手机中的接收机）。该装置包括安装在仪器中的电路卡（22）上的额外按钮（1）。本身已知的凸轮轴继电器（4,5）安装在按钮支撑件（1e）附近和卡上。凸轮轴继电器设置有具有对应于仪器的静止状态的第一位置的控制构件（5）。在仪器的钩开关柱塞（18）的影响下，控制构件（5）可以设置在对应于低音状态的第二位置。按钮设置有倾翻元件（2），当按钮被按下时，启动控制构件（5）将其设置到对应于仪器的扬声状态的第三位置。

10. 发明授权

US3301955A Telephone amplifier 失效
标题翻译：电话放大器
公开(公告)号：US3301955A
公开(公告)日：1967-01-31
申请号：US28025163
申请日：1963-05-14
申请人： PROTOTYPES INC
发明人： CLEMENTS JR CLARENCE J
IPC分类号： H04M1/215 , H04M1/62
CPC分类号： H04M1/215 , H04M1/62

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