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    AUDIO CODEC MODE SELECTOR
    1.
    发明申请
    AUDIO CODEC MODE SELECTOR 审中-公开
    音频编解码模式选择器

    公开(公告)号：US20150332677A1

    公开(公告)日：2015-11-19

    申请号：US14710284

    申请日：2015-05-12

    Applicant: Nokia Technologies Oy

    Inventor： Adriana VASILACHE ,  Lasse Juhani LAAKSONEN ,  Anssi Sakari RÄMÖ

    IPC: G10L19/002 ,  G10L19/02

    CPC classification number: G10L19/24 ,  G10L19/002 ,  G10L19/02 ,  G10L19/22 ,  G10L25/78

    Abstract: There is inter alia a method comprising: receiving a request to change the coding rate of a multimode audio codec; determining that the request corresponds to a coding rate of another mode of operation of the multimode audio codec; determining a frame of an input audio signal of the multimode audio codec to be an active region of the audio signal; maintaining a current operating mode of the multimode audio codec; and reducing the coding rate of the multimode audio codec to a coding rate lower than the requested coding rate.

    Abstract translation: 尤其涉及一种方法，包括：接收改变多模音频编解码器的编码率的请求; 确定所述请求对应于所述多模式音频编解码器的另一操作模式的编码率; 将所述多模式音频编解码器的输入音频信号的帧确定为所述音频信号的有效区域; 保持多模式音频编解码器的当前操作模式; 并将多模式音频编解码器的编码率降低到低于所请求编码速率的编码速率。

    MULTIPLE CHANNEL AUDIO SIGNAL ENCODER MODE DETERMINER
    3.
    发明申请
    MULTIPLE CHANNEL AUDIO SIGNAL ENCODER MODE DETERMINER 审中-公开
    多通道音频信号编码器模式确定器

    公开(公告)号：US20160064004A1

    公开(公告)日：2016-03-03

    申请号：US14783487

    申请日：2013-04-15

    Applicant: NOKIA TECHNOLOGIES OY

    Inventor： Lasse Juhani LAAKSONEN ,  Adriana VASILACHE ,  Anssi Sakari RÄMÖ ,  Mikko Tapio TAMMI

    IPC: G10L19/008

    CPC classification number: G10L19/008 ,  G10L19/22 ,  G10L19/24

    Abstract: It is inter alia disclosed a method comprising: determining an indication of similarity between a first audio frame of a multiple channel input audio signal and a second audio frame of the multiple channel input audio signal; and determining a coding mode for a multiple channel audio spatial encoder dependent on each of: data indicating a coding mode of a mono audio encoder for the first audio frame of the multiple channel input audio signal; a coding mode of the multichannel spatial audio encoder for the first audio frame of the multiple channel input audio signal; and the indication of similarity.

    Abstract translation: 特别地，公开了一种方法，包括：确定多声道输入音频信号的第一音频帧与多声道输入音频信号的第二音频帧之间的相似度的指示; 以及根据以下各项确定多通道音频空间编码器的编码模式：指示多声道输入音频信号的第一音频帧的单声道音频编码器的编码模式的数据; 用于多声道输入音频信号的第一音频帧的多声道空间音频编码器的编码模式; 和相似性的指示。

    PARAMETRIC SPATIAL AUDIO RENDERING
    4.
    发明公开
    PARAMETRIC SPATIAL AUDIO RENDERING 审中-公开

    公开(公告)号：US20240274137A1

    公开(公告)日：2024-08-15

    申请号：US18568526

    申请日：2021-06-10

    Applicant: NOKIA TECHNOLOGIES OY

    Inventor： Mikko-Ville LAITINEN ,  Juha Tapio VILKAMO ,  Lasse Juhani LAAKSONEN ,  Anssi Sakari RÄMÖ

    IPC: G10L19/008 ,  H04S3/00

    CPC classification number: G10L19/008 ,  H04S3/008 ,  H04S2420/03

    Abstract: An apparatus (317) comprising means configured to: receive a spatial audio signal, the spatial audio signal comprising at least one audio signal and spatial metadata (122) associated with the at least one audio signal; generate a mixing value (320) based on the spatial metadata (122) and a predefined parameter (322) which imparts effects of a rendering of a multichannel audio signal having a multichannel configuration to a further multichannel audio signal having a further multichannel configuration on generated output signals; and generating the output audio signals having the further multichannel configuration based on the mixing value (320) and the spatial audio signal.

    METHOD AND APPARATUS FOR LATTICE VECTOR QUANTIZATION OF AN AUDIO SIGNAL
    6.
    发明申请
    METHOD AND APPARATUS FOR LATTICE VECTOR QUANTIZATION OF AN AUDIO SIGNAL 审中-公开
    方法和装置用于音频信号的矢量矢量量化

    公开(公告)号：US20160019900A1

    公开(公告)日：2016-01-21

    申请号：US14763497

    申请日：2013-02-01

    Applicant: NOKIA TECHNOLOGIES OY

    Inventor： Adriana VASILACHE ,  Lasse Juhani LAAKSONEN ,  Anssi Sakari RÄMÖ

    IPC: G10L19/008 ,  G10L19/038

    CPC classification number: G10L19/008 ,  G10L19/038

    Abstract: An apparatus comprising: a vector generator configured to generate a first vector of parameters defining at least one audio signal; a vector extender configured to extend the first vector of parameters to a second vector, where the first vector is length n and the second vector is length n, where m is greater than n; a vector transformer configured to transform the second vector, a lattice quantizer configured to lattice quantize the transformed second vector; and a reverse transformer configured to reverse transform the lattice quantized transformed second vector, such that the first n components of a reverse transformed lattice quantized transformed second vector are a lattice quantization of the first vector.

    Abstract translation: 一种装置，包括：矢量发生器，被配置为生成定义至少一个音频信号的参数的第一矢量; 向量扩展器，被配置为将第一向量参数扩展到第二向量，其中第一向量是长度n，第二向量是长度n，其中m大于n; 被配置为变换所述第二矢量的矢量变换器，被配置为对经变换的第二矢量进行点阵量化的晶格量化器; 以及逆变换器，被配置为反转变换所述格子量化变换的第二矢量，使得反向变换的晶格量化变换的第二矢量的前n个分量是所述第一矢量的晶格量化。

    AUDIO SIGNAL ENCODER
    9.
    发明申请
    AUDIO SIGNAL ENCODER 有权
    音频信号编码器

    公开(公告)号：US20160314797A1

    公开(公告)日：2016-10-27

    申请号：US15102855

    申请日：2013-12-17

    Applicant: NOKIA TECHNOLOGIES OY

    Inventor： Adriana VASILACHE ,  Anssi Sakari RÄMÖ ,  Lasse Juhani LAAKSONEN

    IPC: G10L19/038 ,  G10L19/07

    CPC classification number: G10L19/038 ,  G10L19/07

    Abstract: An apparatus comprising: a vector generator configured to generate at least one vector of parameters defining at least one audio signal; a lattice vector quantizer configured to sort the at least one vector of parameters according to an ordering of at least one vector absolute tuples to generate an associated at least one ordered vector of parameters; the lattice vector quantizer configured to select from a list of leader classes at least one potential code vector; the lattice vector quantizer configured to determine a distance between the at least one potential code vector and the at least one ordered vector of parameters; the lattice vector quantizer configured to determine at least one leader class associated with a potential code vector which generates the smallest associated distance; the lattice vector quantizer configured to transpose the at least one leader class to generate an output lattice quantized codevector.

    Abstract translation: 一种装置，包括：矢量发生器，被配置为生成定义至少一个音频信号的参数的至少一个矢量; 格子矢量量化器，被配置为根据至少一个向量绝对元组的排序来对所述至少一个参数矢量进行分类，以产生相关联的至少一个参数有序矢量; 所述格子矢量量化器被配置为从至少一个潜在码矢量的领导类列表中进行选择; 所述晶格矢量量化器被配置为确定所述至少一个电位码矢量与所述至少一个参数的有序矢量之间的距离; 所述格子矢量量化器被配置为确定与产生所述最小关联距离的潜在码矢量相关联的至少一个前导类; 所述晶格矢量量化器被配置为转置所述至少一个引导类以产生输出的晶格量化码矢。

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