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    METHOD AND APPARATUS FOR LATTICE VECTOR QUANTIZATION OF AN AUDIO SIGNAL
    13.
    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。

    DETERMINATION OF THE SIGNIFICANCE OF SPATIAL AUDIO PARAMETERS AND ASSOCIATED ENCODING
    14.
    发明公开
    DETERMINATION OF THE SIGNIFICANCE OF SPATIAL AUDIO PARAMETERS AND ASSOCIATED ENCODING 审中-公开

    公开(公告)号：US20240363127A1

    公开(公告)日：2024-10-31

    申请号：US18770425

    申请日：2024-07-11

    Applicant: NOKIA TECHNOLOGIES OY

    Inventor： Mikko-Ville LAITINEN ,  Adriana VASILACHE

    IPC: G10L19/02 ,  G10L25/21

    CPC classification number: G10L19/02 ,  G10L25/21

    Abstract: There is inter alia disclosed an apparatus for spatial audio encoding which can receive or determine for one or more audio signals, spatial audio parameters on a sub band basis for providing spatial audio reproduction, the spatial audio parameters can comprise a coherence value for each sub band of a plurality of sub-bands of a frame. The apparatus then determines a significance measure for the coherence values of the plurality of sub bands of the frame and uses the significance measure to determine whether to encode the coherence values of the plurality of sub bands of the frame.

    DETERMINATION OF SPATIAL AUDIO PARAMETER ENCODING AND ASSOCIATED DECODING
    15.
    发明公开
    DETERMINATION OF SPATIAL AUDIO PARAMETER ENCODING AND ASSOCIATED DECODING 审中-公开

    公开(公告)号：US20240212696A1

    公开(公告)日：2024-06-27

    申请号：US18598219

    申请日：2024-03-07

    Applicant: Nokia Technologies Oy

    Inventor： Adriana VASILACHE

    IPC: G10L19/032 ,  G10L19/00 ,  G10L19/008

    CPC classification number: G10L19/032 ,  G10L19/0017 ,  G10L19/008

    Abstract: An apparatus for receiving an indicator configured to identify whether encoded spatial audio signal directional metadata parameters for time-frequency tiles of an audio frame were encoded based on a quantization resolution which is equal to or less than a determined number of bits; decode the encoded spatial audio signal directional metadata parameters for the time-frequency tiles of the audio frame based on the quantization resolution which is equal to or less than the determined number of bits when the indicator identifies as such; and when the indicator identifies that the encoded spatial audio signal directional metadata parameters were not encoded based on the quantization resolution which is equal to or less than the determined number of bits, decode a first part comprising entropy encoded spatial audio signal directional metadata parameters and decode a second part comprising fixed rate encoded spatial audio signal directional metadata parameters.

    QUANTIZING SPATIAL AUDIO PARAMETERS
    16.
    发明公开
    QUANTIZING SPATIAL AUDIO PARAMETERS 审中-公开

    公开(公告)号：US20240046939A1

    公开(公告)日：2024-02-08

    申请号：US18257615

    申请日：2020-12-15

    Applicant: NOKIA TECHNOLOGIES OY

    Inventor： Adriana VASILACHE

    IPC: G10L19/008

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

    Abstract: There is inter alia disclosed an apparatus for spatial audio encoding configured to quantise and index a spatial audio direction parameter to form a quantised spatial audio direction index, wherein the spatial audio direction parameter is associated with a time sub frame of a frequency sub band of an audio frame; and determine a quantised spatial audio difference index by calculating the difference between the quantised spatial audio direction index and a quantised average spatial audio direction index.

    STEREO AUDIO SIGNAL ENCODER
    18.
    发明申请
    STEREO AUDIO SIGNAL ENCODER 审中-公开

    公开(公告)号：US20190392847A1

    公开(公告)日：2019-12-26

    申请号：US16479916

    申请日：2018-01-03

    Applicant: Nokia Technologies Oy

    Inventor： Adriana VASILACHE

    IPC: G10L19/008 ,  G10L19/035 ,  G10L19/24

    Abstract: A method comprising: receiving at least two audio channel signals; determining, for a first frame, at least two parameters representing a difference between the at least two channel audio signals; scalar quantising the at least two parameters to generate at least two index values; adaptively encoding an initial scalar quantized parameter of the at least two parameters; determining whether the initial scalar quantized parameter has a value different from a predetermined value; adaptively encoding any unencoded scalar quantized parameters where the initial scalar quantized parameter has a value different from the predetermined value; determining whether all of the at least two scalar quantized parameters have values equal to the predetermined value where the initial scalar quantized parameter has a value equal to the predetermined value; adaptively encoding any unencoded scalar quantized parameters and generating an indicator that an output is one of fixed or variable rate coding where the initial scalar quantized parameter has a value equal to the predetermined value and at least one of the at least two scalar quantized parameters have values different from the predetermined value; generating an indicator that the output is the other of the one of fixed or variable rate coding where the initial scalar quantized parameter has a value equal to the predetermined value and all of the at least two scalar quantized parameters have values equal to the predetermined value; generating a single channel representation of the at least two audio channel signals dependent on the at least two parameters; and encoding the single channel representation.

    AUDIO SIGNAL ENCODER
    20.
    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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