SOUND REPRODUCTION
    11.
    发明申请
    SOUND REPRODUCTION 审中-公开
    声音再现

    公开(公告)号:WO2007085975A2

    公开(公告)日:2007-08-02

    申请号:PCT/IB2007050097

    申请日:2007-01-12

    Inventor: AARTS RONALDUS M

    CPC classification number: H04R3/14

    Abstract: A sound system (8) comprises a transducer unit (1) and a frequency mapping device (2). The transducer unit comprises an array of transducers (14). The frequency mapping device is arranged for mapping a frequency range of an audio input signal (V in ) onto a frequency at which the transducer unit has a maximum efficiency, such as a resonance frequency or the Helmholtz frequency of the transducer unit. The transducer unit (1) may comprise a dedicated transducer (13) is coupled to the frequency mapping device (2) for producing the Helmholtz frequency of the transducer unit (1). The sound system may additionally comprise a sound processing device (3) arranged for steering sound produced by the array of transducers (14).

    Abstract translation: 声音系统(8)包括换能器单元(1)和频率映射设备(2)。 换能器单元包括换能器阵列(14)。 频率映射装置被布置成用于将音频输入信号(V SUB)中的频率范围映射到换能器单元具有最大效率的频率,例如谐振频率或亥姆霍兹频率 换能器单元。 换能器单元(1)可以包括专用换能器(13),其耦合到频率映射设备(2),用于产生换能器单元(1)的亥姆霍兹频率。 声音系统可以另外包括声音处理装置(3),声音处理装置(3)布置成用于转换由换能器阵列(14)产生的声音。

    MULTICHANNEL AUDIO SIGNAL PROCESSING DEVICE
    12.
    发明申请
    MULTICHANNEL AUDIO SIGNAL PROCESSING DEVICE 审中-公开
    多声道音频信号处理装置

    公开(公告)号:WO0149073A2

    公开(公告)日:2001-07-05

    申请号:PCT/EP0012544

    申请日:2000-12-12

    CPC classification number: H04S1/002 H04S1/007

    Abstract: An audio signal processing device comprises signal supply means to supply over more than one input channel and per input channel over separate frequency subbands domain subchannels coded audio signals. Further filters are used to decode and synthesize the audio signals over the total frequency domain. Subband combination circuits are used for supplying respective input channels to the same subband combination circuit the signals from the same subband frequency domain audio signals.

    Abstract translation: 音频信号处理装置包括信号提供装置,用于在不同的频率子带域子信道编码的音频信号上提供超过一个输入信道和每个输入信道。 其他滤波器用于在总频域上解码和合成音频信号。 子带组合电路用于向相同的子带组合电路提供来自相同子带频域音频信号的信号的各个输入信道。

    LOUDSPEAKER PROTECTION SYSTEM HAVING FREQUENCY BAND SELECTIVE AUDIO POWER CONTROL
    13.
    发明申请
    LOUDSPEAKER PROTECTION SYSTEM HAVING FREQUENCY BAND SELECTIVE AUDIO POWER CONTROL 审中-公开
    具有频带选择性音频功率控制的扬声器保护系统

    公开(公告)号:WO0103466A3

    公开(公告)日:2001-05-17

    申请号:PCT/EP0005962

    申请日:2000-06-27

    CPC classification number: H04R3/007

    Abstract: A loudspeaker protection system comprises filter means for defining one or more frequency bands of an audio signal, controllable amplifier/attenuator means coupled to the filter means, and processing means coupled to control the amplifier/attenuator means, such as to determine audio power in at least one of said frequency bands representing relevant loudspeaker protection information used for selective audio power control in said at least one frequency band. This system has the features for a fast and/or slow thermal protection, as well as for a cone excursion protection all for a loudspeaker in such a system.

    Abstract translation: 扬声器保护系统包括用于定义音频信号的一个或多个频带的滤波器装置,耦合到滤波器装置的可控放大器/衰减器装置,以及耦合以控制放大器/衰减器装置以例如确定音频功率的处理装置, 所述频带中的至少一个表示用于所述至少一个频带中的选择性音频功率控制的相关扬声器保护信息。 该系统具有用于快速和/或慢速热保护的特征,以及用于这种系统中的扬声器的锥形偏移保护。

    ACTIVE SOUND REDUCTION SYSTEM AND METHOD
    14.
    发明申请
    ACTIVE SOUND REDUCTION SYSTEM AND METHOD 审中-公开
    主动减音系统及方法

    公开(公告)号:WO2011015979A3

    公开(公告)日:2011-12-01

    申请号:PCT/IB2010053472

    申请日:2010-07-30

    CPC classification number: G10K11/1788 G10K11/178

    Abstract: The present invention refers to an active sound reduction system and method for attenuation of sound emitted by a primary sound source, especially for attenuation of snoring sounds emitted by a human being. This system comprises a primary sound source, at least one speaker as a secondary sound source for producing an attenuating sound to be superposed with the sound emitted by said primary sound source, a reference microphone for receiving sound from said primary sound source, and at least one error microphone being allocated to each speaker to form a speaker/microphone pair. The at least one error microphone is provided as a directional microphone pointing at its allocated speaker to receive residual sound resulting from the superposition of the sounds from the primary sound source and the corresponding speaker. The error microphone and speaker of at least one speaker/microphone pair and the primary sound source are arranged substantially collinear. A control unit is provided to receive an output reference signal of the reference microphone representing the sound received by the reference microphone and an output error signal of the at least one error microphone representing the sound received by the at least one error microphone and to calculate a control signal for the speaker from the output reference signal and the output error signal.

    Abstract translation: 本发明涉及一种用于衰减由主声源发出的声音的主动减声系统和方法,特别是用于衰减由人发射的打鼾音。 该系统包括主声源,至少一个扬声器作为次声源,用于产生与所述主声源发射的声音叠加的衰减声音,用于从所述主声源接收声音的参考麦克风,并且至少 一个错误麦克风被分配给每个扬声器以形成扬声器/麦克风对。 提供至少一个误差麦克风作为指向其分配的扬声器的定向麦克风,以接收由来自主声源和相应扬声器的声音叠加而产生的残留声音。 至少一个扬声器/麦克风对和主声源的误差麦克风和扬声器基本上共线布置。 提供控制单元以接收表示由参考麦克风接收的声音的参考麦克风的输出参考信号,以及表示由至少一个误差麦克风接收的声音的至少一个误差麦克风的输出误差信号,并计算一个 来自输出参考信号的扬声器的控制信号和输出误差信号。

    AUDIO REPRODUCTION APPARATUS, FEEDBACK SYSTEM AND METHOD
    15.
    发明申请
    AUDIO REPRODUCTION APPARATUS, FEEDBACK SYSTEM AND METHOD 审中-公开
    音频再现装置,反馈系统和方法

    公开(公告)号:WO2004058059A3

    公开(公告)日:2004-12-16

    申请号:PCT/IB0305925

    申请日:2003-12-04

    Abstract: The audio reproduction apparatus comprises a cost input for inputting a mathematical cost derived from a measurement, which measurement is user-influenceable and a conditioning unit, capable of delivering an output audio signal in dependence of the mathematical cost, characterized in that the conditioning unit comprises an audio processing means arranged to process an input audio signal to derive the output audio signal with a reproduction quality in dependence of the mathematical cost. As a reproduction quality the position of a virtual sound source and the quality of a stereo signal are also possible. A system comprising the audio reproduction apparatus, a measurement device and a sound production device and a method of to deriving the output audio signal with a reproduction quality in dependence of the mathematical cost are also presented.

    Abstract translation: 该音频再现设备包括用于输入从测量导出的数学成本的成本输入,该测量是用户可感知的,该调节单元能够根据数学成本来输出输出音频信号,其特征在于,调节单元包括 音频处理装置,其被配置为处理输入音频信号以根据数学成本以再现质量导出输出音频信号。 作为再现质量,虚拟声源的位置和立体声信号的质量也是可能的。 还提供了包括音频再现装置,测量装置和声音产生装置的系统以及根据数学成本以再现质量导出输出音频信号的方法。

    GENERATION OF A SOUND SIGNAL
    16.
    发明申请
    GENERATION OF A SOUND SIGNAL 审中-公开
    声音信号的产生

    公开(公告)号:WO2004028204A3

    公开(公告)日:2004-07-15

    申请号:PCT/IB0304002

    申请日:2003-09-16

    CPC classification number: H04S1/005 H04S1/007 H04S5/00 H04S2400/01 H04S2420/01

    Abstract: The present invention relates to a method and a media system of/for generation of at least one output signal (HPL, HPR) from at least one input signal from a second set of sound signals (M) having a related second set of Head Related Transfer Functions. The media system can be a TV, a CD player, a DVD player, a Radio, a display, an amplifier, a headphone or a VCR. Said method includes the steps of determining, for each signal in the second set of sound signals, a weighted relation (14) comprising at least one signal from a third set of intermediate sound signals (CHI1, CHI2) and at least one weight value (Weights); determining a first set of Head Related Transfer Functions (HRTFs) based on the second set of sound signals, the second set of Head Related Transfer Functions and the weighted relation; and transferring at least one signal from the third set of intermediate sound signals by means of at least one HRTF from said first set of Head Related Transfer Functions in order to generate at least one output signal belonging to said first set of sound signals. Hereby, in the end, fewer HRTFs are determined for a subsequent transfer of input signal(s) to output signal(s). Accordingly few convolutions are required.

    Abstract translation: 本发明涉及一种用于从来自第二组声音信号(M)的至少一个输入信号产生至少一个输出信号(HPL,HPR)的方法和媒体系统,该第二组声音信号(M)具有相关的第二组头部相关 传递函数。 媒体系统可以是电视,CD播放器,DVD播放器,收音机,显示器,放大器,耳机或录像机。 所述方法包括以下步骤:对于第二组声音信号中的每个信号,确定加权关系(14),其包括来自第三组中间声音信号(CHI1,CHI2)和至少一个权重值( 权重); 基于第二组声音信号确定第一组头相关传送函数(HRTF),第二组头相关传递函数和加权关系; 以及通过来自所述第一组头相关传递函数的至少一个HRTF从所述第三组中间声音信号传送至少一个信号,以便产生属于所述第一组声音信号的至少一个输出信号。 因此,最终确定用于随后将输入信号传送到输出信号的HRTF较少。 因此,需要很少的卷积。

    AUDIO REPRODUCING DEVICE
    17.
    发明申请
    AUDIO REPRODUCING DEVICE 审中-公开
    音频再现设备

    公开(公告)号:WO0250831A3

    公开(公告)日:2003-06-19

    申请号:PCT/EP0114247

    申请日:2001-11-29

    CPC classification number: G11B20/00992 H04S3/00

    Abstract: Multi channel audio reproduction has already been used for some time. For example the so-called surround sound signals can improve the appearance of reproduced sound to a great extent. To improve the reproduction of sound signals even further it is in this invention proposed to use enhancing means to process at least some signal parts even further using a monotone transfer function.

    Abstract translation: 多频道音频再现已经使用了一段时间。 例如,所谓的环绕声信号可以在很大程度上改善再现声音的外观。 为了进一步提高声音信号的再现,在本发明中提出使用增强装置来进一步使用单调传递函数处理至少一些信号部分。

    MULTI-CHANNEL AUDIO CONVERTER
    18.
    发明申请
    MULTI-CHANNEL AUDIO CONVERTER 审中-公开
    多声道音频转换器

    公开(公告)号:WO02052896A2

    公开(公告)日:2002-07-04

    申请号:PCT/IB0102467

    申请日:2001-12-07

    CPC classification number: G10H1/366 H04S3/00 H04S5/02 H04S2400/05

    Abstract: A method and audio converter for generating further audio signals ( u , ul, ur, uc, us) from initial audio signal ( x , xl, xr), wherein optionally an information signal (in means 23) is derived from said initial audio signals ( x ). On basis of the initial audio signal ( x , xr, xl), a dominant signal y(k) and a residue signal (or signals) q(k), substantially transverse to each other, are determined (means 21 and 22). In at least two frequency ranges frequency components of the dominant signal are analysed (means 24), and a difference signal yr ((y(k)-yb(k)) corresponding to the dominant signal minus a frequency range component of the dominant signal in one or more frequency ranges (yb(k)) is formed. The difference audio signal yr and the residue signal q(k) are transformed into said further audio signal u (means 25), i.e. formula (I). Preferably in said means (25) the frequency range component is also transformed differently from the difference signal, i.e. formula (II) with T gamma M.

    Abstract translation: 一种用于从初始音频信号(x1,xl,xr)产生另外的音频信号(u,u,u,u u,uc,us)的方法和音频转换器,其中可选地 信息信号(在装置23中)是从所述初始音频信号(>)导出的。 基于初始音频信号(xx,xr,xl),确定基本上彼此横向的显性信号y(k)和余数信号(或信号)q(k) (装置21和22)。 在至少两个频率范围中分析主要信号的频率分量(装置24),并且对应于主导信号的差分信号yr((y(k)-yb(k))减去主要信号的频率范围分量 在一个或多个频率范围(yb(k))中形成差分音频信号yr和残差信号q(k),变换成所述另外的音频信号u(装置25),即公式 (I),优选地,在所述装置(25)中,频率范围分量也与差分信号不同地变换,即具有T伽马M的公式(II)。

    MULTI-CHANNEL STEREO CONVERTER FOR DERIVING A STEREO SURROUND AND/OR AUDIO CENTRE SIGNAL
    19.
    发明申请
    MULTI-CHANNEL STEREO CONVERTER FOR DERIVING A STEREO SURROUND AND/OR AUDIO CENTRE SIGNAL 审中-公开
    多通道立体声转换器,用于获得立体声和/或音频中心信号

    公开(公告)号:WO0207481A2

    公开(公告)日:2002-01-24

    申请号:PCT/EP0107757

    申请日:2001-07-05

    CPC classification number: H04S5/02 H04S3/00 H04S2400/05

    Abstract: A multi-channel stereo converter is described comprising stereo magnitude determining means for generating a stereo information signal (a/b; ( rho ), which represents a degree of stereo between audio input signals (L, R), and transforming means for transforming said audio signals (L, R) based on said stereo information signal (a/b; ( rho ) into at least a surround signal (S). A space mapping interpretation is presented and an audio centre signal may be derived from the stereo input signals as well. The result is more flexibility in application and design, without substantial cross talk in the audio signals.

    Abstract translation: 描述了一种多声道立体声转换器,包括:立体声量值确定装置,用于产生表示音频输入信号(L,R)之间的立体声程度的立体声信息信号(a / b;ρ);以及变换装置, 基于所述立体声信息信号(a / b;ρ)将音频信号(L,R)转换为至少一个环绕信号(S)。呈现空间映射解释并且可从立体声输入信号 结果是在应用和设计上更具灵活性,而音频信号中没有实质性的串扰。

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