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1. 发明申请

WO2021112813A1 METHODS, SYSTEMS, AND MEDIA FOR SEAMLESS AUDIO MELDING 审中-公开
公开(公告)号：WO2021112813A1
公开(公告)日：2021-06-10
申请号：PCT/US2019/063950
申请日：2019-12-02
申请人： GOOGLE LLC
发明人： COVELL, Michele , BALUJA, Shumeet
IPC分类号： G10L25/06 , G10L25/18 , G11B27/038 , G10L13/07
摘要： In accordance with some embodiments of the disclosed subject matter, mechanisms for seamless audio melding between audio items in a playlist are provided. In some embodiments, a method for transitioning between audio items in playlists is provided, comprising: identifying a sequence of audio items in a playlist of audio items, wherein the sequence of audio items includes a first audio item and a second audio item that is to be played subsequent to the first audio item; and modifying an end portion of the first audio item and a beginning portion of the second audio item, where the end portion of the first audio item and the beginning portion of the second audio item are to be played concurrently to transition between the first audio item and the second audio item, wherein the end portion of the first audio item and the beginning portion of the second audio item have an overlap duration, and wherein modifying the end portion of the first audio item and the beginning portion of the second audio item comprises: generating a first spectrogram corresponding to the end portion of the first audio item and a second spectrogram corresponding to the beginning portion of the second audio item; identifying, for each frequency band in a series of frequency bands, a window over which the first spectrogram within the end portion of the first audio item and the second spectrogram within the beginning portion of the second audio item have a particular cross-correlation; modifying, for each frequency band in the series of frequency bands, the end portion of the first spectrogram and the beginning portion of the second spectrogram such that amplitudes of frequencies within the frequency band decrease within the first spectrogram over the end portion of the first spectrogram and that amplitudes of frequencies within the frequency band increase within the second spectrogram over the beginning portion of the second spectrogram; and generating a modified version of the first audio item the includes the modified end portion of the first audio item based on the modified end portion of the first spectrogram and generating a modified version of the second audio item that includes the modified beginning portion of the second audio item based on the modified beginning portion of the second spectrogram.

2. 发明申请

WO2017058094A1 DYNAMIC MODIFICATION OF AUDIO CONTENT 审中-公开
标题翻译：音频内容的动态修改
公开(公告)号：WO2017058094A1
公开(公告)日：2017-04-06
申请号：PCT/SE2016/050931
申请日：2016-09-30
申请人： MOODELIZER AB
发明人： HERLÖFSSON, Carl-Michael
IPC分类号： G11B27/038 , G06F3/16 , G11B20/10 , G06F17/30
CPC分类号： G06F3/165 , G10H1/0025 , G10H2220/131 , G10H2240/085 , H04H60/04 , H04R3/04 , H04S7/307
摘要： The invention relates to a method for dynamic modification of audio content. An audio content theme includes audio information relating to at least one theme variation. The method includes the steps of: receiving an intensity parameter indicative of an amount of audio information being played and a variation parameter indicative of at least one theme variation of the audio information being played; modifying, based on said intensity parameter, the amount of audio information being played, and, based on said variation parameter, the at least one theme variation of the audio information being played. Also described is a computer program configured to be executed on a computer device for dynamic modification of an audio content theme.
摘要翻译：本发明涉及一种用于动态修改音频内容的方法。音频内容主题包括与至少一个主题变化相关的音频信息。该方法包括以下步骤：接收指示正在播放的音频信息的量的强度参数和指示所播放的音频信息的至少一个主题变化的变化参数; 基于所述强度参数，修改正在播放的音频信息的量，以及基于所述变化参数，播放正在播放的音频信息的至少一个主题变化。还描述了被配置为在用于动态修改音频内容主题的计算机设备上执行的计算机程序。

3. 发明申请

WO2004068495A1 VERFAHREN UND VORRICHTUNG ZUR STEUERUNG EINES TONFOLGE GEKOPPELTEN BILDFOLGEABLAUFS SOWIE ZUGEHÖRIGES PROGRAMM 审中-公开
标题翻译：方法和一种用于控制音频序列联接的框架速率流和相关程序
公开(公告)号：WO2004068495A1
公开(公告)日：2004-08-12
申请号：PCT/EP2004/000825
申请日：2004-01-30
申请人： MICLIP S.A. , KILIAN, Ulrich
发明人： KILIAN, Ulrich
IPC分类号： G11B27/038
CPC分类号： G11B27/031 , H04N2201/3242 , H04N2201/3264
摘要： Bei einem Verfahren und einer Vorrichtung zur Steuerung eines Tonfolge gekoppelten Bildfolgeablaufs werden in einer den Bediener führenden Form die für den Ablauf einer vertonten Bildfolge benötigten Tonfolgen und Bilder eingegeben und gespeichert und mittels eines Softwareprogramms in eine gewünschte Abfolge gekoppelt. Dadurch, dass Bilder und Töne durch eine in dem Softwareprogramm vorliegende, vorgegebene Ablaufsteuerung in eine vertonte Bildfolge überführt werden, in dem der Anwender aus einer vorliegenden Tonfolgedatei bzw. Bildfolgedatei eine Tonfolge bzw. eine Anzahl von Bildern selektiert, die dann der Bildfolge oder Tonfolge zugrunde gelegt wird, wobei definierte oder vom Anwender zu definierende Bedingungen im Tonmaterial den Übergang von einem Bild zum Nächsten bewirken, wird einem Anwender ohne Fachkenntnis ermöglicht, aus einem Sortiment an Bildern und Tonfolgen eine dynamische Bildfolge mit sprachlicher oder musikalischer Untermalung zu erstellen.
摘要翻译：在一种方法和用于在序列控制音调序列耦合图像序列领先的设置为音乐的旋律和图像的图像序列的流动所要求的形式的操作者的装置被输入并被存储，并且通过软件程序的装置联接在一个希望的顺序。在声音在图像特征并通过在软件程序中的当前声音，预定的顺序控制的图像序列被转移，其中本Tonfolgedatei或图像序列文件的用户选择的音调序列或数量的图像，然后将它们的图像序列或音频序列的基础上放置，其中定义的或通过在音频材料效果从一个图像到另一个图像的过渡，用户条件来定义的，用户在不专门知识使能产生一个范围图像和旋律，动态图像序列，使用语音或背景音乐。

4. 发明申请

WO99021188A1 FRAME-BASED AUDIO CODING WITH VIDEO/AUDIO DATA SYNCHRONIZATION BY DYNAMIC AUDIO FRAME ALIGNMENT 审中-公开
标题翻译：基于帧的音频编码与视频/音频数据同步通过动态音频帧对齐
公开(公告)号：WO99021188A1
公开(公告)日：1999-04-29
申请号：PCT/US1998/021761
申请日：1998-10-15
IPC分类号： G10L11/00 , G11B20/10 , G11B27/02 , G11B27/031 , G11B27/038 , H03M7/30 , H04B14/04
CPC分类号： G11B27/038 , G11B20/10527 , G11B27/031
摘要： Several audio signal processing techniques may be used in various combinations to improve the quality of audio represented by an information stream formed by splice editing two or more other information streams. The techniques are particularly useful in applications that bundle audio information with video information. In one technique, gain-control words conveyed with the audio information stream are used to interpolate playback sound levels across a splice. In another technique, special filterbanks or forms of TDAC transforms are used to suppress aliasing artifacts on either side of a splice. In yet another technique, special filterbanks or crossfade window functions are used to optimize the attenuation of spectral splatter created at a splice. In a further technique, audio sample rates are converted according to frame lengths and rates to allow audio information to be bundled with, for example, video information. In yet a further technique, audio blocks are dynamically aligned so that proper synchronization can be maintained across a splice. An example for 48 kHz audio with NTSC video is discussed.
摘要翻译：可以以各种组合使用多种音频信号处理技术来提高由拼接编辑两个或多个其它信息流形成的信息流所表示的音频的质量。这些技术在将音频信息与视频信息捆绑在一起的应用中特别有用。在一种技术中，利用音频信息流传送的增益控制字用于跨拼接插值重放声级。在另一种技术中，使用特殊的滤波器组或TDAC变换形式来抑制拼接两侧的混叠伪像。在另一种技术中，使用特殊的滤波器组或交叉渐变窗函数来优化在接头处产生的频谱飞溅的衰减。在另一种技术中，根据帧长度和速率来转换音频采样率，以允许音频信息与例如视频信息捆绑在一起。在另一种技术中，音频块被动态对齐，使得能够跨拼接维持适当的同步。讨论了具有NTSC视频的48 kHz音频的示例。

5. 发明申请

WO2016055195A1 VORRICHTUNG ZUM ERZEUGEN EINES VIDEOAUSGANGSDATENSTROMS, VIDEOQUELLE, VIDEOSYSTEM UND VERFAHREN ZUM ERZEUGEN EINES VIDEOAUSGANGSDATENSTROMS BZW. EINES VIDEOQUELLENDATENSTROMS 审中-公开
标题翻译： DEVICE一种视频输出数据流视频源的信号的系统和方法产生视频输出数据流量或视频源数据流
公开(公告)号：WO2016055195A1
公开(公告)日：2016-04-14
申请号：PCT/EP2015/068480
申请日：2015-08-11
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V.
发明人： WAGNER, Eugen , SALOMAN, Christopher , THIEME, Wolfgang
IPC分类号： G11B27/038 , H04N5/265 , H04N5/232
CPC分类号： G11B27/038 , H04N5/265 , H04N5/268 , H04N5/272 , H04N9/643 , H04N9/75 , H04N9/76
摘要： Eine Vorrichtung zum Erzeugen eines Videoausgangsdatenstroms umfasst einen ersten und einen zweiten Signaieingang zum Empfangen eines ersten und eines zweiten Videoquellendatenstroms, eine Prozessoreinrichtung, die ausgebildet ist, um den Videoausgangsdatenstrom zu einem ersten Zeitpunkt basierend auf dem ersten Videoquellendatenstrom und mittels eines Umschaltvorgangs zu einem zweiten Zeitpunkt, der auf den ersten Zeitpunkt folgt, basierend auf dem zweiten Videoquellendatenstrom bereitzustellen. Die Vorrichtung umfasst ferner einen Steuersignalausgang zum Senden eines Steuerbefehls an eine Videoquelie. von der der erste oder zweite Videoquellendatenstrom empfangen wird. Der Steuerbefehl umfasst eine Anweisung an die Videoquelle zur Anwendung eines Übergangseffektes, der zeitlich zwischen einem Bild des ersten und einem Bild des zweiten Videoquellendatenstroms in dem Videoausgangssignal angeordnet ist.
摘要翻译：用于生成视频输出数据流的装置，包括第一和用于接收第一和第二视频源数据流的第二Signaieingang，一个处理装置，其在基于所述第一视频源数据流，并且通过开关操作的装置的第一时间的第二时间适应于视频输出数据流，下面在第一时间点，以提供基于所述第二视频源数据流。该装置还包括控制信号输出，用于发送控制命令到Videoquelie。其中当接收到第一或第二视频源数据流。控制命令包括用于将在所述源数据流分成视频输出信号的第一和第二视频图像的画面之间在时间上位于一个过渡效果的视频源的指令。

6. 发明申请

WO2008004971A1 COMPUTER, COMPUTER PROGRAM PRODUCT AND METHOD FOR PROVIDING AN AUDIO OUTPUT SIGNAL 审中-公开
标题翻译：计算机，计算机程序产品和提供音频输出信号的方法
公开(公告)号：WO2008004971A1
公开(公告)日：2008-01-10
申请号：PCT/SE2007/050491
申请日：2007-07-04
申请人： TONIUM AB , NORBERG, Jonas
发明人： NORBERG, Jonas
IPC分类号： G11B27/038 , H04H7/00 , H04N5/265
CPC分类号： G10H1/0091 , G10H2210/125 , G10H2210/241 , G10H2240/131 , G10H2240/305 , G11B27/034 , H04N5/782
摘要： A computer (23) connectable to a data network (36) and arranged to perform DJ functions, comprises: A first data base (25) for music track files; A second data base (27) for mix instructions files, A playback unit (33) arranged to provide the audio output signal by manipulating music files based on mix instructions files; A search unit (40) arranged to determine if the at least one music track file is found in the first data base (25) and A retrieval unit (35) arranged to connect to a music track data base (37) through a data network (36) to retrieve information related to at least one music track file from the music track data base (37) based on the indication of the at least one music track if it is not found in the first data base (25).
摘要翻译：可连接到数据网络（36）并被布置成执行DJ功能的计算机（23）包括：用于音乐轨道文件的第一数据库（25）用于混合指令文件的第二数据库（27），被布置成通过基于混合指令文件操纵音乐文件来提供音频输出信号的重放单元（33）一种搜索单元（40），用于确定在第一数据库（25）中是否找到了至少一个音轨文件，以及A检索单元（35），被安排成通过数据网络连接到音乐轨道数据库（37）（36），如果在所述第一数据库（25）中没有找到所述至少一个音乐曲目的指示，则从音乐轨道数据库（37）检索与至少一个音乐曲目文件相关的信息。

7. 发明申请

WO2007036846A3 METHOD AND APPARATUS FOR AUTOMATIC STRUCTURE ANALYSIS OF MUSIC 审中-公开
公开(公告)号：WO2007036846A3
公开(公告)日：2007-04-05
申请号：PCT/IB2006/053398
申请日：2006-09-20
申请人： KONINKLIJKE PHILIPS ELECTRONICS N.V. , LEMMA, Aweke, N. , ZIJDERVELD, Francesco, F., M.
发明人： LEMMA, Aweke, N. , ZIJDERVELD, Francesco, F., M.
IPC分类号： G11B27/038 , G11B27/10 , G11B27/11 , G11B27/30 , G10L11/00
摘要： The location of accented beats of a music track is determined. A signal is extracted from the music track. The signal is demultiplexed across a number of channels such that each consecutive channel contains a consecutive portion of the signal, each portion of the signal corresponding a consecutive beat period, the number of channels corresponding to the meter of the music track. The content of each channel is analysed to determine which channel has different signal properties. The channel having the different signal properties is the channel containing the accented beats.

8. 发明申请

WO2007036824A2 METHOD AND APPARATUS FOR PROCESSING AUDIO FOR PLAYBACK 审中-公开
标题翻译：处理播放音频的方法和装置
公开(公告)号：WO2007036824A2
公开(公告)日：2007-04-05
申请号：PCT/IB2006/053230
申请日：2006-09-12
申请人： KONINKLIJKE PHILIPS ELECTRONICS N.V. , PAUWS, Steffen, C. , VIGNOLI, Fabio , LEMMA, Aweke, N.
发明人： PAUWS, Steffen, C. , VIGNOLI, Fabio , LEMMA, Aweke, N.
IPC分类号： G11B27/038 , G11B27/02
CPC分类号： G11B27/038 , G11B27/034
摘要： A method and apparatus for processing audio for playback to provide a smooth transition between a beginning region of an audio track and an end region of a previous audio track is disclosed. A quantity representative of a chromagram is calculated for each of the audio tracks and the mixing points for the beginning and end regions of each audio track are identified. A quantity representative of a chromagram at the mixing point of the beginning region of the audio track and a quantity representative of a chromagram at the mixing point of the end region of the previous audio track are correlated to determine an order of audio tracks for playback and/or to determine the duration of the mix transition.
摘要翻译：公开了一种用于处理用于回放的音频以在音频轨道的开始区域和先前音频轨道的结束区域之间平滑过渡的方法和装置。针对每个音频轨道计算代表色度的数量，并且识别每个音轨的开始和结束区域的混合点。音频轨道的开始区域的混合点处的色标表示数量和代表先前音频轨道的结束区域的混合点处的色度图的数量相关联，以确定用于回放的音轨的顺序，以及 /或确定混合转换的持续时间。

9. 发明申请

WO01046957A1 METHOD AND APPARATUS FOR SMOOTHING SPLICED DISCONTINUOUS AUDIO STREAMS 审中-公开
标题翻译：用于平滑分开的不连续音频流的方法和装置
公开(公告)号：WO01046957A1
公开(公告)日：2001-06-28
申请号：PCT/US2000/033914
申请日：2000-12-14
IPC分类号： G10L19/005 , G11B27/038
CPC分类号： G10L19/005 , G11B27/038
摘要： In one embodiment, a plurality of transition audio sample values can be generated based on a captured value of a final sample of a first audio sample sequence and a received plurality of samples of a second audio sample sequence. Each transition audio sample value can be generated based at least in part on a respective sample of the second audio sample sequence. Each transition audio sample value can represent the value of the captured final sample adjusted with a varying weighted difference between the value of the final sample and a value of the respective sample of the second audio sample sequence. The varying weighted difference can be based on a varying weighting function that increases from a value of zero to a value of one such that the first transition audio sample value is generated based on the varying weighting function having a value of zero, and each subsequent transition audio sample value is generated based on the varying weighting function having a value incrementally greater until the final transition audio sample value is generated based on the varying weighting function having a value equal to one.
摘要翻译：在一个实施例中，可以基于第一音频采样序列的最终采样的捕获值和第二音频采样序列的接收到的多个采样来生成多个转换音频采样值。可以至少部分地基于第二音频采样序列的相应采样来生成每个转换音频采样值。每个转换音频采样值可以表示用最终采样的值和第二音频采样序列的相应样本的值之间的变化的加权差调整的所捕获的最终采样的值。变化的加权差可以基于从零值增加到值1的变化的加权函数，使得基于具有零值的变化加权函数生成第一转变音频采样值，并且每个后续转换基于具有递增增加的值的变化的加权函数，基于具有等于1的变化的加权函数生成最终转换音频采样值来生成音频采样值。

10. 发明申请

WO2017165825A1 TRANSITIONS BETWEEN MEDIA CONTENT ITEMS 审中-公开
标题翻译：媒体内容项目之间的转换
公开(公告)号：WO2017165825A1
公开(公告)日：2017-09-28
申请号：PCT/US2017/024109
申请日：2017-03-24
申请人： JEHAN, Tristan , BITTNER, Rachel , MONTECCHIO, Nicola , MCCURRY, Hunter , GU, Minwei , HERNANDEZ, Gandalf
发明人： JEHAN, Tristan , BITTNER, Rachel , MONTECCHIO, Nicola , MCCURRY, Hunter , GU, Minwei , HERNANDEZ, Gandalf
IPC分类号： G11B27/10 , G11B27/038 , G11B27/28
摘要： A system of playing media content items determines transitions between pairs of media content items by determining desirable locations in which transitions across the pairs of media content items occur. The system uses a plurality of track features of media content items and determines such track features of each media content item associated with each of transition point candidates, such as beat positions, of that media content item. The system determines similarity in the plurality of track features between the transition point candidates of a first media content item and the transition point candidates for a second media content item being played subsequent to the first media content item. The transition points or portions of the first and second media content items are selected from the transition point candidates for the first and second media content items based on the similarity results.
摘要翻译：播放媒体内容项目的系统通过确定发生跨越媒体内容项目对的转换的期望位置来确定媒体内容项目对之间的转换。该系统使用媒体内容项目的多个轨道特征并且确定与该媒体内容项目的每个转换点候选者（例如节拍位置）相关联的每个媒体内容项目的这种轨道特征。该系统确定第一媒体内容项目的转换点候选与用于在第一媒体内容项目之后播放的第二媒体内容项目的转换点候选之间的多个轨迹特征中的相似性。基于相似性结果，从第一和第二媒体内容项目的转换点候选中选择第一和第二媒体内容项目的转换点或部分。

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