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1.发明申请Method for adjusting adaptation control of adaptive interference canceller 审中-公开用于调整自适应干扰消除器的自适应控制的方法公开(公告)号：US20050147258A1
公开(公告)日：2005-07-07
申请号：US10746843
申请日：2003-12-24
申请人： Ville Myllyla , Matti Kajala , Matti Hamalainen
发明人： Ville Myllyla , Matti Kajala , Matti Hamalainen
CPC分类号： H01Q3/2611 , H04B7/086
摘要： The present invention describes a method for temporal adjustment of adaptation control of an adaptive interference canceller (AIC) based on spatially weighted beamforming pre-processing. Most importantly, the present invention enhances the spatial blocking performance, while generating noise references for the AIC by a beamformer, by introducing dynamic adjustment to the AIC filter adaptation control. As a result, adaptation is effectively realized in two dimensions—spatial and temporal. The criterion for adjusting the AIC filter adaptation control is applied continuously following generation of the noise references. Essential in the invention is the comparison of the short-time powers or levels of the noise reference signals and desired signal beams and allowing the adaptation of the AIC filter under consideration only when the noise reference signal power is large enough in comparison with the desired signal power.
摘要翻译： 本发明描述了一种基于空间加权波束成形预处理来自适应干扰消除器（AIC）的自适应控制的时间调整方法。 最重要的是，本发明通过向AIC滤波器适应控制引入动态调整，同时通过波束形成器产生AIC的噪声参考，来增强空间阻塞性能。 因此，适应在空间和时间两个方面有效地实现。 用于调整AIC滤波器自适应控制的标准在产生噪声参考之后连续地应用。 本发明的基本特征是比较噪声参考信号和期望信号光束的短时间功率或电平，并且仅在噪声参考信号功率足够大以及与期望信号相比才能适应所考虑的AIC滤波器 功率。
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2.发明申请公开(公告)号：US20050149320A1
公开(公告)日：2005-07-07
申请号：US10745945
申请日：2003-12-24
申请人： Matti Kajala , Matti Hamalainen , Ville Myllyla
发明人： Matti Kajala , Matti Hamalainen , Ville Myllyla
CPC分类号： H04R3/005 , G10L21/0208 , G10L2021/02166
摘要： This invention describes a method for generating noise references for adaptive interference cancellation filters for applications in generalized sidelobe canceling systems. More specifically the present invention relates to a multi-microphone beamforming system similar to a generalized sidelobe canceller (GSC) structure, but the difference with the GSC is that the present invention creates noise references to the adaptive interference canceller (AIC) filters using steerable beams that block out the desired signal when the beam is steered away from the desired signal source location.
摘要翻译： 本发明描述了一种用于为广义旁瓣取消系统中的应用产生用于自适应干扰消除滤波器的噪声参考的方法。 更具体地，本发明涉及类似于广义旁瓣消除器（GSC）结构的多麦克风波束成形系统，但是与GSC的不同之处在于本发明使用可转向波束对自适应干扰消除器（AIC）滤波器产生噪声参考 当光束被转向远离期望的信号源位置时，阻挡所需的信号。
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公开(公告)号：US20080192961A1
公开(公告)日：2008-08-14
申请号：US11594704
申请日：2006-11-07
IPC分类号： H04R25/00
CPC分类号： H04R1/1041 , H04R1/1025 , H04R1/1083 , H04R25/02 , H04R25/305 , H04R25/652 , H04R25/658 , H04R2201/107 , H04R2225/31 , H04R2225/61 , H04R2225/77
摘要： The specification and drawings present a new method, apparatus and software product for providing flexible audio communication solutions using ear-devices utilizing, e.g., electrode transducers with one or more sensors comprising a surface resonator cavity sensitive to a predetermined acoustic frequency range for using, for example, in headsets and hearing aids. The ear-device can be configured for inserting it into a human ear for a handsfree operation and the sensors can be configured to detect human tissue vibrations using the surface resonator cavity. The acoustic communication solutions with these ear-devices may include: providing two-way communications in normal conditions as well as in noisy conditions, providing protection of hearing, recording the true sound field bin-aurally, providing a playback capability, providing volume enhancement and equalization for persons with hearing defects, etc.
摘要翻译： 说明书和附图提出了一种新的方法，装置和软件产品，用于使用例如具有一个或多个传感器的电极换能器提供灵活的音频通信解决方案，所述传感器包括对预定声频范围敏感的表面谐振腔， 例如，在耳机和助听器中。 耳机可以被配置为将其插入人耳以进行免提操作，并且传感器可以被配置为使用表面谐振器腔来检测人体组织振动。 具有这些耳机的声学通信解决方案可以包括：在正常条件和噪声条件下提供双向通信，提供听力保护，听觉录音真实声场，提供播放能力，提供音量增强和 听力障碍者平等等
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4.发明申请Method for enhancing the Acoustic Echo cancellation system using residual echo filter 有权使用残余回波滤波器增强声学回声消除系统的方法公开(公告)号：US20050063536A1
公开(公告)日：2005-03-24
申请号：US10871606
申请日：2004-06-17
申请人： Ville Myllyla , Gerald Enzner
发明人： Ville Myllyla , Gerald Enzner
CPC分类号： H04M9/082
摘要： This invention discloses an improvement to a digital Acoustic Echo Control (AEC) in hands-free telephones. It describes an additional adaptive filter referred to as a residual echo filter, which is placed after the usual echo canceller and it is used to efficiently and accurately estimate a residual echo signal b(i) and a system coupling factor β(i), which can be utilized to establish an efficient control for the AEC system and construct the appropriate filters. The invention also describes a control block means performing a joint operation control of the echo canceller, residual echo suppressor and residual echo filter for achieving more consistent echo cancellation results and enhancing output signal quality.
摘要翻译： 本发明公开了对免提电话中的数字声学回声控制（AEC）的改进。 它描述了称为残余回波滤波器的附加自适应滤波器，其被放置在通常的回波消除器之后，并且用于有效和准确地估计残余回波信号b（i）和系统耦合因子β（i），其中 可用于建立AEC系统的有效控制并构建适当的过滤器。 本发明还描述了执行回波消除器，残余回波抑制器和残余回波滤波器的联合操作控制的控制块装置，用于实现更一致的回波消除结果并增强输出信号质量。
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公开(公告)号：US09576590B2
公开(公告)日：2017-02-21
申请号：US14375639
申请日：2012-02-24
IPC分类号： G10L21/00 , G10L21/0364 , G10L19/26 , G10L25/15 , G10L21/0232
CPC分类号： G10L21/0364 , G10L19/26 , G10L21/0232 , G10L25/15
摘要： An apparatus comprising at least one processor and at least one memory including computer code for one or more programs, the at least one memory and the computer code configured to with the at least one processor to cause the apparatus to at least perform: estimating a signal to noise ratio value for an audio signal; generating a post-filter comprising at least one of: a first formant frequency filter and a second formant frequency filter, wherein the post-filter is dependent on the signal to noise ratio value for the audio signal.
摘要翻译： 一种包括至少一个处理器和至少一个包括用于一个或多个程序的计算机代码的存储器的设备，所述至少一个存储器和所述计算机代码被配置为使所述至少一个处理器使得所述设备至少执行：估计信号 音频信号的噪声比值; 生成包括以下至少一个的后置滤波器：第一共振峰频率滤波器和第二共振峰频率滤波器，其中后置滤波器取决于音频信号的信噪比值。
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6.发明申请Method, Apparatus and Computer Program Product for Providing Low Frequency Expansion of Speech 审中-公开提供低频扩展语音的方法，设备和计算机程序产品公开(公告)号：US20070299655A1
公开(公告)日：2007-12-27
申请号：US11425809
申请日：2006-06-22
IPC分类号： G10L19/14
CPC分类号： G10L21/038
摘要： An apparatus for providing low frequency expansion of speech includes a nonlinear function element, a band-pass filter element and a level control element. The non-linear function element is configured to receive a signal including at least two harmonic components and to produce a signal including at least one lower frequency harmonic component having a lower frequency than a highest frequency component of the at least two harmonic components responsive to the signal including at least two harmonic components. The band-pass filter element is in communication with the non-linear function element and configured to filter the signal including the at least one lower frequency harmonic component. The level control element is configured to apply a level control to alter the filtered signal based on a feature vector associated with an input speech signal.
摘要翻译： 用于提供语音的低频扩展的装置包括非线性功能元件，带通滤波器元件和电平控制元件。 非线性功能元件被配置为接收包括至少两个谐波分量的信号，并产生包括至少一个低频谐波分量的信号，该低频谐波分量的频率低于至少两个谐波分量的最高频率分量 信号包括至少两个谐波分量。 带通滤波器元件与非线性功能元件通信，并且被配置为对包括至少一个较低频率谐波分量的信号进行滤波。 电平控制元件被配置为施加电平控制以基于与输入语音信号相关联的特征向量来改变滤波信号。
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公开(公告)号：US06542436B1
公开(公告)日：2003-04-01
申请号：US09608090
申请日：2000-06-30
申请人： Ville Myllyla
发明人： Ville Myllyla
IPC分类号： H04M100
摘要： A method and a device for detecting if an object is in proximity to the device, wherein sound (audio) transducers already found in the device are used to realize the proximity detection function, along with digital signal processing or equivalent means. The audio transducers are preferably those designed for use with human hearing and speaking capabilities in the range of about 20 Hz to about 20 kHz, and need not be specially designed transducers. The method includes steps of generating a measurement signal; driving an output acoustic transducer of the device with the measurement signal; monitoring an input acoustic transducer of the device to detect the measurement signal; and determining that an object is in proximity to the device based on a detected alteration of the measurement signal. The device may comprise a mobile telephone, such as a cellular telephone, or a personal communicator. When the device includes a mobile telephone, the step of determining can be used to verify that a handsfree mode of operation can be entered, and/or to set a volume of a signal driving a speaker, and/or to select, modify, or tune an audio processing technique. The step of determining can also be used to automatically enter a handset mode of operation from a handsfree mode of operation. The steps of monitoring and determining include steps of operating plural adaptive filters in parallel on the same input data, with different step sizes, for generating first and second impulse response estimates, respectively, and comparing a difference between the first and second impulse response estimates to a threshold.
摘要翻译： 一种用于检测对象是否在设备附近的方法和装置，其中已经在设备中发现的声音（音频）传感器被用于实现接近检测功能以及数字信号处理或等效装置。 音频换能器最好是设计用于大约20Hz到大约20kHz范围内的人类听觉和说话能力的设备，而不需要是专门设计的换能器。 该方法包括产生测量信号的步骤; 用测量信号驱动装置的输出声换能器; 监测所述设备的输入声学换能器以检测所述测量信号; 以及基于检测到的测量信号的改变来确定对象在设备附近。 该设备可以包括诸如蜂窝电话的移动电话或个人通信器。 当设备包括移动电话时，可以使用确定步骤来验证是否可以输入免提操作模式，和/或设置驱动扬声器的信号的音量，和/或选择，修改或 调整音频处理技术。 确定的步骤也可以用于从免提操作模式自动进入手机操作模式。 监视和确定的步骤包括以相同的输入数据并行地操作多个自适应滤波器的步骤，具有不同的步长，分别用于产生第一和第二脉冲响应估计，并将第一和第二脉冲响应估计之间的差值与 一个门槛。
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