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    Synchronization of multi-channel audio communicated over bluetooth low energy
    6.
    发明授权
    Synchronization of multi-channel audio communicated over bluetooth low energy 有权

    公开(公告)号：US09712266B2

    公开(公告)日：2017-07-18

    申请号：US14075273

    申请日：2013-11-08

    申请人： Apple Inc.

    发明人： Joakim Linde ,  Baek S. Chang ,  Renaud Lienhart

    IPC分类号： H04H5/00 ,  H04H20/88 ,  H04W4/00

    CPC分类号： H04H20/88 ,  H04W4/80

    摘要： This document describes techniques for synchronizing rendering of multi-channel audio output. First audio data corresponding to a first audio channel and second audio data corresponding to a second audio channel may be received. The first and second audio data may be configured for simultaneous rendering. A transmission schedule for wirelessly transmitting audio data to each of first and second audio rendering devices may be configured, according to which the first audio data may be scheduled for transmission to the first audio rendering device after the second audio data is scheduled for transmission to the second audio rendering device by a first length of time. An indication may be wirelessly transmitted to the second audio rendering device to delay rendering audio data by the first length of time. The first and second audio data may be wirelessly transmitted to the first and second audio rendering devices according to the transmission schedule.

    Using Single-Channel/Multi-Channel Transitions to Output an Alert Indicating a Functional State of a Back-Up Audio-Broadcast System
    7.
    发明申请
    Using Single-Channel/Multi-Channel Transitions to Output an Alert Indicating a Functional State of a Back-Up Audio-Broadcast System 有权
    使用单通道/多通道转换输出指示备用音频广播系统的功能状态的警报

    公开(公告)号：US20170064480A1

    公开(公告)日：2017-03-02

    申请号：US15349911

    申请日：2016-11-11

    申请人： Tribune Broadcasting Company, LLC

    发明人： Hank J. Hundemer

    IPC分类号： H04R29/00 ,  H04R27/00 ,  H04N21/233 ,  H04N21/439 ,  H04H20/88 ,  H04H20/42

    CPC分类号： H04R29/007 ,  H04H20/12 ,  H04H20/20 ,  H04H20/42 ,  H04H20/88 ,  H04H60/11 ,  H04H60/29 ,  H04H60/37 ,  H04H60/58 ,  H04H2201/90 ,  H04N21/233 ,  H04N21/439 ,  H04N21/4394 ,  H04R27/00

    摘要： In one aspect, an example method for outputting an alert indicating a functional state of a back-up audio-broadcast system involves: a computing device receiving a first audio-stream that represents first audio-content; the computing device generating a first signature based, at least in part, upon an extent of single-channel/multi-channel transitions included within the first audio-content; the computing device receiving a second audio-stream that represents second audio-content; the computing device generating a second signature based, at least in part, upon an extent of single-channel/multi-channel transitions included within the second audio-content; the computing device making a determination that the generated first-signature and the generated second-signature lack a threshold extent of similarity; and responsive to the determination that the generated first-signature and the generated second-signature lack the threshold extent of similarity, the computing device outputting an alert.

    摘要翻译： 一方面，一种用于输出指示备用音频广播系统的功能状态的警报的示例方法包括：接收代表第一音频内容的第一音频流的计算设备; 所述计算设备至少部分地基于包括在所述第一音频内容内的单信道/多信道转换的范围生成第一签名; 所述计算设备接收表示第二音频内容的第二音频流; 所述计算设备至少部分地基于包括在所述第二音频内容内的单信道/多信道转换的范围，生成第二签名; 所述计算装置确定所生成的第一签名和所生成的第二签名缺少阈值相似程度; 并且响应于所生成的第一签名和所生成的第二签名缺少阈值相似度的确定，所述计算设备输出警报。

    Method and system for reducing amplitude modulation (AM) noise in AM broadcast signals
    8.
    发明授权
    Method and system for reducing amplitude modulation (AM) noise in AM broadcast signals 有权
    降低AM广播信号幅度调制（AM）噪声的方法和系统

    公开(公告)号：US09270393B2

    公开(公告)日：2016-02-23

    申请号：US13721396

    申请日：2012-12-20

    申请人： Yao H. Kuo

    发明人： Yao H. Kuo

    IPC分类号： H03D1/04 ,  H04H20/88 ,  H04B1/10 ,  H04B1/04 ,  G10K11/178

    CPC分类号： H04H20/88 ,  G10K11/178 ,  H04B1/0475 ,  H04B1/0483 ,  H04B1/1027

    摘要： A computer-implemented method for reducing a noise signal added to an amplitude modulated (AM) broadcast signal while travelling from a broadcasting antenna to a receiving antenna is provided. The method includes capturing a signal representative of the AM broadcast signal corrupted by the noise signal via the receiving antenna, inverting the captured signal, and determining a carrying frequency of the AM broadcast signal and delaying the inverted waveform by a fraction of a cycle of the carrying frequency. The method further includes generating a difference signal by subtractively combining the captured signal and the delayed inverted signal, generating an estimate noise signal by reducing an amplitude of the generated difference signal using a noise-reduction control multiplier, and minimizing the corrupting noise signal component of the captured signal by subtractively combining the captured signal and the generated estimate noise signal.

    摘要翻译： 提供了一种用于在从广播天线传播到接收天线的同时减少添加到幅度调制（AM）广播信号中的噪声信号的计算机实现的方法。 该方法包括：经由接收天线捕获代表由噪声信号损坏的AM广播信号的信号，反转捕获的信号，以及确定AM广播信号的携带频率，并将反相波形延迟一小段时间 携带频率。 该方法还包括通过对捕获的信号和延迟的反相信号进行减法组合来产生差分信号，通过使用降噪控制乘法器减小产生的差分信号的幅度，并将损坏的噪声信号分量最小化来产生估计噪声信号 通过将所捕获的信号和产生的估计噪声信号进行减法组合来捕获信号。

    Method and Apparatus for Identification of Broadcast Source
    9.
    发明申请
    Method and Apparatus for Identification of Broadcast Source 有权
    广播来源识别方法与装置

    公开(公告)号：US20150295667A1

    公开(公告)日：2015-10-15

    申请号：US14751302

    申请日：2015-06-26

    申请人： Shazam Investments Limited

    发明人： Avery Li-Chun Wang

    IPC分类号： H04H20/88 ,  H04H60/27 ,  H04H60/63 ,  H04H20/71

    CPC分类号： H04H20/88 ,  H04B17/23 ,  H04H20/71 ,  H04H60/27 ,  H04H60/37 ,  H04H60/43 ,  H04H60/44 ,  H04H60/58 ,  H04H60/63 ,  H04H2201/50 ,  H04H2201/90

    摘要： A user (102) hears an audio program being broadcast and can record a sample of the audio. The sample is then conveyed to an analyzing means (106) to determine to which broadcast station the user is listening. The analyzing means monitors many broadcast channels. Thus, characteristics of the audio sample and samples taken from the broadcast channels can be compared to find a match. Broadcast information pertaining to the broadcast channel from which the match was found may then be reported back to the user, combined with an advertisement of a promotion, prize notification, discount offers, and other information specific for a certain radio station for example.

    摘要翻译： 用户（102）听到正在广播的音频节目并且可以记录音频的样本。 然后将样本传送到分析装置（106）以确定用户正在收听哪个广播台。 分析装置监视许多广播频道。 因此，可以比较从广播频道获取的音频样本和样本的特征以找到匹配。 然后可以结合宣传广告，奖品通知，折扣优惠以及特定于某个无线电台的其他信息，将与发现匹配的广播频道有关的广播信息报告给用户。

    APPARATUS AND METHOD FOR TRANSMITTING AUDIO OBJECT
    10.
    发明申请
    APPARATUS AND METHOD FOR TRANSMITTING AUDIO OBJECT 有权
    用于传输音频对象的装置和方法

    公开(公告)号：US20130170646A1

    公开(公告)日：2013-07-04

    申请号：US13729303

    申请日：2012-12-28

    申请人： Electronics and Telecommunications Research Institute

    发明人： Jae Hyoun YOO ,  Jeong Il SEO ,  Tae Jin LEE ,  Keun Woo CHOI ,  Kyeong Ok KANG

    IPC分类号： H04H20/88

    CPC分类号： H04H20/88 ,  G10L19/00 ,  G10L19/008 ,  G10L19/20 ,  H04R5/00 ,  H04S2400/00 ,  H04S2400/01 ,  H04S2420/13

    摘要： An apparatus and method for transmitting a plurality of audio objects using a multichannel encoder and a multichannel decoder are provided. The audio object encoder includes a multichannel encoder determination unit to determine a multichannel encoder to be used for encoding of a plurality of audio objects according to the number of the audio objects, an encoding unit to generate an encoded signal by encoding the plurality of audio objects using the determined multichannel encoder, and a multichannel audio object signal generation unit to generating a multichannel audio object signal, by multiplexing sound image localization information of the plurality of audio objects along with the encoded signal.

    摘要翻译： 提供了一种使用多声道编码器和多声道解码器发送多个音频对象的装置和方法。 音频对象编码器包括多声道编码器确定单元，用于根据音频对象的数量确定要用于多个音频对象的编码的多声道编码器;编码单元，用于通过对多个音频对象进行编码来生成编码信号 使用所确定的多声道编码器和多声道音频对象信号生成单元，通过将多个音频对象的声音图像定位信息与编码信号一起多路复用来生成多声道音频对象信号。