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    SYSTEMS AND METHODS FOR AUTOMATICALLY EQUALIZING AUDIO SIGNALS
    2.
    发明公开
    SYSTEMS AND METHODS FOR AUTOMATICALLY EQUALIZING AUDIO SIGNALS 审中-公开
    系统和方法自动均衡音频信号

    公开(公告)号：EP1704559A1

    公开(公告)日：2006-09-27

    申请号：EP05702547.0

    申请日：2005-01-04

    申请人： Koninklijke Philips Electronics N.V.

    发明人： VAN DE PAR, Steven ,  BREEBAART, Jeroen ,  MCKINNEY, Martin

    IPC分类号： G10L19/02

    CPC分类号： H04R3/04 ,  G10L21/00

    摘要： A system and method for automatically equalizing audio signals uses an energy calculation unit (140) to calculate spectral energy values for a plurality of frequency bands based on equalized frequency components. A spreading unit (150) then determines spreaded energy values for each frequency band based on the measured spectral energy values and a spreading function, where the spreading function defines the spread of spectral energy across the frequency bands. An update unit (160, 170) then updates equalizer settings for each frequency band by taking a previous (or initial) equalizer setting and subtracting a normalized ratio of the measured spectral energy value and the spreaded energy value for that frequency band. In this manner, the accumulation of adjustments to the equalizer settings results in slightly attenuating frequency bands that are clearly audible and slightly amplifying frequency bands that are masked by other frequency bands.

    ENERGY DEPENDENT QUANTIZATION FOR EFFICIENT CODING OF SPATIAL AUDIO PARAMETERS
    3.
    发明公开
    ENERGY DEPENDENT QUANTIZATION FOR EFFICIENT CODING OF SPATIAL AUDIO PARAMETERS 有权
    对空间音频参数进行有效编码的能量相关量化

    公开(公告)号：EP1754222A1

    公开(公告)日：2007-02-21

    申请号：EP06724214.9

    申请日：2006-04-10

    申请人： Coding Technologies AB ,  Fraunhofer-Gesellschaft Zur Förderung der angewand ten Forschung e.v. ,  Koninklijke Philips Electronics N.V.

    发明人： ROEDEN, Jonas ,  ENGDEGARD, Jonas ,  PURNHAGEN, Heiko ,  BREEBAART,Jeroen ,  SCHUIJERS, Erik ,  VAN DE PAR, Steven ,  HILPERT, Johannes ,  HERRE, Jürgen

    IPC分类号： G10L19/00

    CPC分类号： G10L19/03 ,  G10L19/008

    摘要： Parameters being a measure for a characteristic of a channel or of a pair of channels, wherein the parameter is a measure for a characteristic of the channel or of the pair of channels with respect to another channel of a multi-channel signal can be quantized more efficiently using a quantization rule that is generated based on a relation of an energy measure of the channel or the pair of channels and an energy measure of the multi-channel signal. With generation of the quantization rule taking into account a psycho acoustic approach, the size of an encoded representation of the multi-channel signal can be decreased by coarser quantization without significantly disturbing the perceptual quality of the multi-channel signal when reconstructed from the encoded representation.

    摘要翻译： 参数是一个信道或一对信道的特性的量度，其中该参数是信道或一对信道相对于多信道信号的另一个信道的特性的量度可以被量化更多 有效地使用基于信道或信道对的能量测量值与多信道信号的能量测量值之间的关系生成的量化规则。 通过考虑心理声学方法产生量化规则，多声道信号的编码表示的大小可以通过较粗量化来减小，而在从编码表示重构时不明显地干扰多声道信号的感知质量 。