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    • 7. 发明申请
    • METHOD AND SYSTEM FOR IDENTIFYING OPTIMAL QUADRATIC PERMUTATION POLYNOMIAL TURBO INTERLEAVER SETS
    • 识别最佳四极拟合多项式涡轮机组的方法和系统
    • WO2016057836A1
    • 2016-04-14
    • PCT/US2015/054763
    • 2015-10-08
    • SIRIUS XM RADIO INC.
    • SCARPA, CarlSCHELL, Edward
    • H03M13/27H03M13/29
    • H03M13/2739
    • Systems and automated methods are provided for obtaining optimal Q.PP parameter sets. For a given block size N all possible Q.PP parameter sets may be generated to obtain a candidate set of f1,f2 pairs. The candidate set may then be initially tested for performance, and the poorer performing parameter pairs removed from consideration, resulting in a good candidate set. The good candidate set may then be subjected to more extensive testing, which may include decreasing SNR and lengthening the test bit sequences in various combinations to trigger errors, and thus allow ranking of the candidates by performance. Because some block sizes N are fixed by system design parameters, the inquiry may end there. In other embodiments, where there is an allowed range of possible block sizes for a system being designed ab initio, the above process may be an inner loop, for a given block size, where an outer loop runs through various possible block sizes N, where N may be subject to some condition. For example, in some embodiments block sizes are desired to be a multiple of some integer or even some power of 2, e.g., 8, and thus the outer loop runs through potential block sizes N that satisfy such conditions, for example, all N between 10,000 and 13,000 that are divisible by 8. Using an exemplary system, an optimal parameter set {f1,f2} = {217,1560} was found for a block size of N=12,168 bits, and an optimal parameter set {f1,f2} = {299, 510} for a block size of N=12,240 bits was found.
    • 提供了系统和自动化方法来获得最佳Q.PP参数集。 对于给定的块大小N,可以生成所有可能的Q.PP参数集,以获得f1,f2对的候选集合。 然后,候选集可以被初始化为性能测试,并且执行较差的参数对从考虑中移除,导致良好的候选集合。 然后可以对良好的候选集进行更广泛的测试,其可以包括降低SNR并且以各种组合来延长测试比特序列以触发错误,并且因此允许通过性能来排列候选者。 由于某些块大小N由系统设计参数固定,所以查询可能会在那里结束。 在其他实施例中,对于从头开始设计的系统可能的块大小的允许范围,对于给定的块大小,上述过程可以是内部循环,其中外部循环遍历各种可能的块大小N,其中 N可能会受到一些条件的限制。 例如,在一些实施例中,块大小希望是2,例如8的一些整数或甚至某些功率的倍数,因此外环循环通过满足这种条件的潜在块大小N,例如, 10,000和13,000可被8整除。使用示例性系统,对于N = 12,168位的块大小,找到最佳参数集{f1,f2} = {217,1560},并且找到最佳参数集{f1,f2 } = {299,510},块大小为N = 12,240位。
    • 9. 发明申请
    • SERVER SIDE CROSSFADING FOR PROGRESSIVE DOWNLOAD MEDIA
    • 服务器端交叉加速下载媒体
    • WO2013158787A9
    • 2013-12-19
    • PCT/US2013037013
    • 2013-04-17
    • SIRIUS XM RADIO INC
    • LOWE RAYMOND
    • H04N21/23H04H20/00H04N21/43
    • G10L19/00G11B27/038H04H20/38H04H60/04
    • In exemplary embodiments of the present invention systems and methods are provided to implement and facilitate cross-fading, interstitials and other effects/processing of two or more media elements in a personalized media delivery service so that each client or user has a consistent high quality experience. The effects or crossfade processing can occur on the broadcast, publisher or server-side, but can still be personalized to a specific user, thus still allowing a personalized experience for each individual user, in a manner where the processing burden is minimized on the downstream side or client device. This approach enables a consistent user experience, independent of client device capabilities, both static and dynamic. The cross-fade can be implemented after decoding the relevant chunks of each component clip, processing, recoding and rechunking, or, in a preferred embodiment, the cross-fade or other effect can be implemented on the relevant chunks to the effect in the compressed domain, thus obviating any loss of quality by re-encoding. A large scale personalized content delivery service can be implemented by limiting the processing to essentially the first and last chunks of any file, since there is no need to processing the full clip. In exemplary embodiments of the present invention this type of processing can easily be accommodated in cloud computing technology, where the first and last files may be conveniently extracted and processed within the cloud to meet the required load. Processing may also be done locally, for example, by the broadcaster, with sufficient processing power to manage peak load.
    • 在本发明的示例性实施例中,提供系统和方法以实现和促进个性化媒体传递服务中的两个或多个媒体元素的交叉衰落,间隙和其他效果/处理,使得每个客户端或用户具有一致的高质量体验 。 影响或交叉淡入淡出处理可能发生在广播,发布者或服务器端,但是仍然可以对特定用户进行个性化,从而仍然允许每个用户的个性化体验,其方式是在下游处理负担最小化 侧面或客户端设备。 这种方法可以实现一致的用户体验,独立于客户端设备的静态和动态功能。 可以在解码每个分量剪辑的相关块,处理,重新编码和重新调谐之后实现交叉淡入淡出,或者在优选实施例中,可以在相关块上实现交叉淡入淡出或其他效果,使其在压缩 域,从而通过重新编码来消除任何质量损失。 可以通过将处理限制为基本上任何文件的第一个和最后一个块来实现大规模的个性化内容传送服务,因为不需要处理完整的剪辑。 在本发明的示例性实施例中,这种类型的处理可以容易地适应于云计算技术,其中可以方便地在云中提取和处理第一和最后文件以满足所需的负载。 处理也可以在本地进行,例如由广播者进行,具有足够的处理能力来管理峰值负载。
    • 10. 发明申请
    • SYSTEMS AND METHODS FOR IMPLEMENTING EFFICIENT CROSS-FADING BETWEEN COMPRESSED AUDIO STREAMS
    • 用于在压缩音频流之间实现有效的交叉加速的系统和方法
    • WO2013158804A1
    • 2013-10-24
    • PCT/US2013/037034
    • 2013-04-17
    • SIRIUS XM RADIO INC.
    • LOWE, RaymondKALMAN, MarkSINHA, Deepen
    • G10L19/008
    • G10L19/00G11B27/031G11B27/038H04H20/38H04H60/04
    • Systems and methods are presented for efficient cross-fading (or other multiple clip processing) of compressed domain information streams on a user or client device, such as a telephone, tablet, computer or MP3 player, or any consumer device with audio playback. Exemplary implementation systems may provide cross-fade between AAC/ Enhanced AAC Plus (EAACPIus) information streams or between MP3 information streams or even between information streams of unmatched formats (e.g. AAC to MP3 or MP3 to AAC). Furthermore, these systems are distinguished by the fact that cross- fade is directly applied to the compressed bitstreams so that a single decode operation may be performed on the resulting bitstream. Moreover, using the described methods, similar cross fade in the compressed domain between information streams utilizing other formats of compression, such as, for example, MP2, AC-3, PAC, etc. can also be advantageously implemented. Thus, in exemplary embodiments of the present invention a set of frames from each input stream associated with the time interval in which a cross fade is decoded, and combined and recoded with a cross fade or other effect now in the compressed bitstream. Once sent through the client device's decoder, the user hears the transitional effect. The only input data that is decoded and processed is that associated with the portion of each stream used in the crossfade, blend or other interstitial, and thus the vast majority of the input streams are left compressed.
    • 呈现用于用户或客户端设备(例如电话,平板电脑,计算机或MP3播放器)或具有音频播放的任何消费者设备的压缩域信息流的有效交叉衰落(或其他多个剪辑处理)的系统和方法。 示例性实现系统可以在AAC /增强型AAC Plus(EAACPIus)信息流之间或者在MP3信息流之间或者甚至在不匹配格式的信息流(例如AAC到MP3或MP3到AAC)之间提供交叉淡入淡出。 此外,这些系统的区别在于,将交叉淡化直接应用于压缩比特流,从而可以对所得到的比特流执行单个解码操作。 此外,使用所描述的方法,也可以有利地实现利用其他格式的压缩的信息流之间的压缩域中类似的交叉淡入淡出,例如MP2,AC-3,PAC等。 因此,在本发明的示例性实施例中,来自与其中解码交叉淡入淡出的时间间隔相关联的每个输入流的一组帧,并且现在在压缩比特流中以交叉淡入淡出或其他效果进行组合和重新编码。 一旦通过客户端设备的解码器发送,用户就会听到过渡效果。 解码和处理的唯一输入数据是与交叉淡入淡出,混合或其他间隙中使用的每个流的部分相关联,因此绝大多数输入流被压缩。