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    Multitrack recorder
    2.
    发明公开
    Multitrack recorder 审中-公开

    公开(公告)号：EP2701151A2

    公开(公告)日：2014-02-26

    申请号：EP13175446.7

    申请日：2013-07-06

    申请人： Teac Corporation

    发明人： Natori, Ikuomi

    IPC分类号： G11B27/034 ,  G11B27/34

    CPC分类号： G11B20/00992 ,  G11B27/034 ,  G11B27/34

    摘要： A multitrack recorder capable of setting one track or more to a monaural type or a stereo type has a storage unit that stores a history of track-type changing-and-setting operations and operations entailing erasure or changing of audio data stored on each track and that stores specifics of the track-type changing-and-setting operations and the audio data erased or changed along with performance of operations in association with each operation, and a change unit that changes audio data stored in each track, and a type of the track, to audio data that were stored in each track, and a type of the track, before performance of a specified operation.

    Matrix improvements to lossless encoding and decoding
    5.
    发明公开
    Matrix improvements to lossless encoding and decoding 审中-公开
    Matrixverbesserungen zur verlustfreien Kodierung und Dekodierung

    公开(公告)号：EP2339756A3

    公开(公告)日：2011-12-21

    申请号：EP10184504.8

    申请日：2000-04-07

    申请人： DOLBY LABORATORIES LICENSING CORPORATION

    发明人： Craven, Peter Graham ,  Law, Malcolm James ,  Stuart, John Robert

    IPC分类号： H04S3/02 ,  H03M7/00 ,  H03M7/30 ,  G11B20/00 ,  G11B20/10

    CPC分类号： H04H20/88 ,  G11B20/00007 ,  G11B20/00992 ,  G11B20/10527 ,  G11B2020/00014 ,  G11B2020/10546 ,  G11B2220/2562 ,  H03M7/30 ,  H04N5/76 ,  H04S3/02 ,  H04S2420/03

    摘要： A lossless encoder and decoder are provided for transmitting a multichannel signal on a medium such as DVD-Audio. The encoder accepts additionally a downmix specification and splits the encoded stream into two substreams, such that a two-channel decoder of meagre computational power can implement the downmix specification by decoding one substream, while a multichannel decoder can decode the original multichannel signal losslessly using both substreams.

    摘要翻译： 提供了一种无损编码器和解码器，用于在诸如DVD-Audio的介质上发送多声道信号。 编码器另外接收一个下混指定，并将编码流分解成两个子流，使得计算能力较弱的双通道解码器可以通过解码一个子流来实现下混规范，而多通道解码器可以使用两个子码无损地解码原始多通道信号 子。 其他功能提供了24位处理器上的高效实现，用于确认用户的无损再现，以及在导致过载的降混规范的情况下的良性行为。 该原理还扩展到混合速率信号，其中例如一些输入通道以48kHz采样，一些输入通道以96kHz采样。

    Multi-channel compatible stereo recording
    6.
    发明公开
    Multi-channel compatible stereo recording 有权
    支持多声道的立体声录音

    公开(公告)号：EP2337029A1

    公开(公告)日：2011-06-22

    申请号：EP10183793.8

    申请日：2005-04-29

    申请人： AURO TECHNOLOGIES NV

    发明人： Van den Berghe, Guido

    IPC分类号： G11B20/00 ,  G10H1/36

    CPC分类号： G10H1/363 ,  G10L19/008 ,  G11B20/00992 ,  G11B20/10527 ,  H04S2420/03

    摘要： An encoder for mixing a plurality of independent mono audio channels into a stereo recording and generating a restricted set of additional parameters used to master an audio track of a storage device is described. The plurality of independent mono audio channels are constructed such that the storage device can be played using an optical disk player so that in a first mode all of the plurality of independent mono audio channels are played as the stereo recording and in a second mode at least one of the plurality of independent mono audio channels can be unmixed and the stereo recording played with at least one mono audio channel removed. A corresponding decoder and an audio system comprising such encoder and decoder are also described.

    STEREO SIGNAL CONVERTER, STEREO SIGNAL REVERSE CONVERTER, AND METHODS FOR BOTH
    7.
    发明公开
    STEREO SIGNAL CONVERTER, STEREO SIGNAL REVERSE CONVERTER, AND METHODS FOR BOTH 审中-公开
    STEREOSIGNALWANDLER，STEREOSIGNALSPERRWANDLER UND VERFAHRENFÜRDIESE

    公开(公告)号：EP2264698A1

    公开(公告)日：2010-12-22

    申请号：EP09727068.0

    申请日：2009-04-03

    申请人： Panasonic Corporation

    发明人： MORII, Toshiyuki

    IPC分类号： G10L19/00

    CPC分类号： G10L19/008 ,  G11B20/00992 ,  G11B2020/10546

    摘要： Disclosed are a stereo signal converter whereby it is possible to obtain low-redundancy encoding signals (M, S) even when the sound source locations are different, and a stereo signal reverse converter whereby it is possible to obtain higher-quality stereo signals. In a stereo signal converter (101), a correlation analyzer (111) calculates the power (PL) of a left channel signal (L), the power (PR) of a right channel signal (R), and a correlation value (CLR) using the left channel signal (L) and the right channel signal (R). A coefficient calculator (113) calculates a coefficient a by means of the correlation value (CLR) outputted from the correlation analyzer (111) based on the magnitude relationship between the power (PL) and the power (PR). A sum-difference calculator (115) adds the left channel signal (L) and the right channel signal (R) to generate a monaural signal (M). Also, the sum-difference calculator (115) generates a side signal (S) using the magnitude relationship between the power (PL) and the power (PR), and a coefficient obtained by encoding and decoding a.

    摘要翻译： 公开了一种立体声信号转换器，即使当声源位置不同时也可以获得低冗余编码信号（M，S），并且可以获得更高质量的立体声信号的立体声信号反向转换器。 在立体声信号转换器（101）中，相关分析器（111）计算左声道信号（L）的功率（PL），右声道信号（R）的功率（PR）和相关值（CLR ）使用左声道信号（L）和右声道信号（R）。 系数计算器（113）基于功率（PL）和功率（PR）之间的大小关系，通过从相关分析器（111）输出的相关值（CLR）来计算系数α。 和差计算器（115）将左声道信号（L）和右声道信号（R）相加以产生单声道信号（M）。 此外，和差计算器（115）使用功率（PL）和功率（PR）之间的大小关系产生侧信号（S），以及通过对a进行编码和解码而获得的系数。

    A METHOD AND AN APPARATUS FOR PROCESSING AN AUDIO SIGNAL
    8.
    发明公开
    A METHOD AND AN APPARATUS FOR PROCESSING AN AUDIO SIGNAL 有权
    处理音频信号的方法和设备

    公开(公告)号：EP2232487A1

    公开(公告)日：2010-09-29

    申请号：EP08867393.4

    申请日：2008-12-31

    申请人： LG Electronics Inc.

    发明人： OH, Hyen-O ,  JUNG, Yang Won

    IPC分类号： G10L19/00 ,  H03M7/30 ,  G11B20/10 ,  H04N7/24

    CPC分类号： G10L19/008 ,  G11B20/00992 ,  G11B2020/10546 ,  H04S3/008 ,  H04S2420/03

    摘要： A method of processing an audio signal is disclosed. The present invention includes receiving a downmix signal including at least one object signal and object information extracted when the downmix signal is generated, receiving mix information including mode selection information, the mix information for controlling the object signal, bypassing the downmix signal or extracting a background object and at least one independent object from the downmix signal, based on the mode selection information, and if the downmix signal is bypassed, generating multi-channel information using the object information and the mix information, wherein the downmix signal corresponds to a mono signal and wherein the mode selection information includes information indicating which one of modes including a normal mode, a mode for controlling the background object, and a mode for controlling the at least one independent object.

    摘要翻译： 公开了一种处理音频信号的方法。 本发明包括接收包括至少一个对象信号和当生成下混信号时提取的对象信息的下混信号，接收包括模式选择信息，用于控制对象信号的混合信息，绕过下混信号或提取背景的混合信息 对象和来自所述下混合信号的至少一个独立对象，并且如果所述下混合信号被绕过，则使用所述对象信息和所述混合信息生成多通道信息，其中所述下混合信号对应于单声道信号 并且其中，所述模式选择信息包括指示包括正常模式，用于控制所述背景对象的模式和用于控制所述至少一个独立对象的模式中的哪一个模式的信息。

    Embedding sound field control factors
    10.
    发明公开
    Embedding sound field control factors 审中-公开
    Steuerfaktoren zur Einbettung von Schallfeldern

    公开(公告)号：EP1635348A2

    公开(公告)日：2006-03-15

    申请号：EP05108382.2

    申请日：2005-09-13

    申请人： SAMSUNG ELECTRONICS CO., LTD.

    发明人： Ko, Byeong-seob

    IPC分类号： G11B20/10

    CPC分类号： G11B20/00992 ,  G11B20/00891 ,  G11B20/00913 ,  G11B20/10527 ,  G11B27/002 ,  G11B27/10 ,  G11B2020/10546 ,  H04H20/31 ,  H04H20/89 ,  H04H2201/50

    摘要： A method of embedding sound field control factors (SFC factors) into a sound source. The method includes coding sound field factors and sound field information to obtain sound field control factors for the sound source in a binary data type, and the sound field factors represent an acoustic characteristic of the sound source and the sound field information represents an environment under which the sound source is recorded, and watermarking the sound field control factors into the sound source without compressing the sound source. In this method, the SFC factors that represent characteristics of the sound source are embedded into the sound source itself using a digital watermarking technology. Therefore, the SFC factors need not be manually set by a user. In addition, the SFC factors can be reliably transmitted, irrespective of header corruption caused by format conversion and transmission of a compressed sound source.

    摘要翻译： 将声场控制因子（SFC因子）嵌入声源的方法。 该方法包括编码声场因子和声场信息以获得二进制数据类型中的声源的声场控制因子，声场因子表示声源的声学特性，声场信息表示一种环境， 记录声源，并且将声场控制因子水印到声源中而不压缩声源。 在这种方法中，使用数字水印技术将表示声源特征的SFC因子嵌入声源本身。 因此，SFC因素不需要由用户手动设置。 此外，不管由格式转换和压缩声源的传输引起的标题损坏，SFC因子都可以被可靠地传输。