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    SYSTEMS AND METHODS FOR IMPLEMENTING EFFICIENT CROSS-FADING BETWEEN COMPRESSED AUDIO STREAMS
    93.
    发明申请
    SYSTEMS AND METHODS FOR IMPLEMENTING EFFICIENT CROSS-FADING BETWEEN COMPRESSED AUDIO STREAMS 审中-公开

    公开(公告)号：US20180025735A1

    公开(公告)日：2018-01-25

    申请号：US15722240

    申请日：2017-10-02

    Applicant: Sirius XM Radio Inc.

    Inventor： Raymond Lowe ,  Mark Kalman ,  Deepen Sinha ,  Christopher Ward

    IPC: G10L19/00 ,  H04H20/38 ,  G11B27/038 ,  H04H60/04

    CPC classification number: G10L19/00 ,  G11B27/031 ,  G11B27/038 ,  H04H20/38 ,  H04H60/04

    Abstract: 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 (EAACPlus) 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.

    Systems and methods for implementing cross-fading, interstitials and other effects downstream
    96.
    发明授权
    Systems and methods for implementing cross-fading, interstitials and other effects downstream 有权

    公开(公告)号：US09773508B2

    公开(公告)日：2017-09-26

    申请号：US15222256

    申请日：2016-07-28

    Applicant: Sirius XM Radio Inc.

    Inventor： Raymond Lowe ,  Christopher Ward ,  Charles W. Christine

    IPC: G10L19/00 ,  G10L19/16 ,  G10L19/008 ,  G11B27/038 ,  H04H60/04

    CPC classification number: G10L19/167 ,  G06F9/5044 ,  G10L19/008 ,  G10L19/26 ,  G11B27/038 ,  H04H60/04

    Abstract: Systems and methods are presented for cross-fading (or other multiple clip processing) of information streams on a user or client device, such as a telephone, tablet, computer or MP3 player, or any consumer device with audio playback. Multiple clip processing can be accomplished at a client end according to directions sent from a service provider that specify a combination of (i) the clips involved; (ii) the device on which the cross-fade or other processing is to occur and its parameters; and (iii) the service provider system. For example, a consumer device with only one decoder, can utilize that decoder (typically hardware) to decompress one or more elements that are involved in a cross-fade at faster than real time, thus pre-fetching the next element(s) to be played in the cross-fade at the end of the currently being played element. The next elements(s) can, for example, be stored in an input buffer, then decoded and stored in a decoded sample buffer, all prior to the required presentation time of the multiple element effect. At the requisite time, a client device component can access the respective samples of the decoded audio clips as it performs the cross-fade, mix or other effect. Such exemplary embodiments use a single decoder and thus do not require synchronized simultaneous decodes.

    System and method for increasing transmission bandwidth efficiency (“EBT2”)
    97.
    发明授权
    System and method for increasing transmission bandwidth efficiency (“EBT2”) 有权

    公开(公告)号：US09767812B2

    公开(公告)日：2017-09-19

    申请号：US14226788

    申请日：2014-03-26

    Applicant: Sirius XM Radio Inc.

    Inventor： Paul Marko ,  Deepen Sinha ,  Hariom Aggrawal

    IPC: G10L19/008 ,  G10L19/00 ,  H04H60/58 ,  G10L19/02

    CPC classification number: G10L19/008 ,  G10L19/00 ,  G10L19/0212 ,  G10L2019/0001 ,  H04H60/58 ,  H04H2201/18

    Abstract: Systems and methods for increasing transmission bandwidth efficiency by the analysis and synthesis of the ultimate components of transmitted content are presented. To implement such a system, a dictionary or database of elemental codewords can be generated from a set of audio clips. Using such a database, a given arbitrary song or other audio file can be expressed as a series of such codewords, where each given codeword in the series is a compressed audio packet that can be used as is, or, for example, can be tagged to be modified to better match the corresponding portion of the original audio file. Each codeword in the database has an index number or unique identifier. For a relatively small number of bits used in a unique ID, e.g. 27-30, several hundreds of millions of codewords can be uniquely identified. By providing the database of codewords to receivers of a broadcast or content delivery system in advance, instead of broadcasting or streaming the actual compressed audio signal, all that need be transmitted is the series of identifiers along with any modification instructions to the identified codewords. After reception, intelligence on the receiver having access to a locally stored copy of the dictionary can reconstruct the original audio clip by accessing the codewords via the received IDs, modify them as instructed by the modification instructions, further modify the codewords either individually or in groups using the audio profile of the original audio file (also sent by the encoder) and play back a generated sequence of phase corrected codewords and modified codewords as instructed. In exemplary embodiments of the present invention, such modification can extend into neighboring codewords, and can utilize either or both (i) cross correlation based time alignment and (ii) phase continuity between harmonics, to achieve higher fidelity to the original audio clip.

    Traffic data services without navigation system
    99.
    发明授权
    Traffic data services without navigation system 有权
    交通数据业务无导航系统

    公开(公告)号：US09406225B2

    公开(公告)日：2016-08-02

    申请号：US14518367

    申请日：2014-10-20

    Applicant: Sirius XM Radio Inc.

    Inventor： Sven Mark Finnis ,  William Carl Stumphauzer, II ,  John Dombrowski ,  Naresh Coppisetti ,  David Birks

    IPC: G08G1/00 ,  G08G1/0962 ,  G08G1/0969

    CPC classification number: G08G1/00 ,  G08G1/0962 ,  G08G1/0969

    Abstract: A non-navigation data system for providing traffic data service in a mobile environment can include a data decoder for decoding a digital data stream from a digital audio radio transmission source, location determining means (such as GPS or cellular location determining schemes) for determining a current location of a mobile receiver receiving the digital data stream, a display for displaying traffic data corresponding to the current location, and a plurality of static maps wherein the traffic data corresponding to the current location is overlaid at least over a portion of the static maps.

    Abstract translation: 用于在移动环境中提供业务数据业务的非导航数据系统可以包括用于从数字音频无线电传输源解码数字数据流的数据解码器，用于确定一个或多个信号的位置确定装置（诸如GPS或蜂窝位置确定方案） 接收数字数据流的移动接收机的当前位置，用于显示对应于当前位置的业务数据的显示器，以及多个静态映射，其中对应于当前位置的业务数据至少覆盖一部分静态映射 。

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