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公开(公告)号：EP2982134A1
公开(公告)日：2016-02-10
申请号：EP14774918.8
申请日：2014-03-26
IPC分类号： H04R1/20 , H03H17/00 , G01R23/167 , G06F17/17
CPC分类号： H04R3/04 , G06F3/165 , G06T5/00 , G06T2207/20024 , G06T2207/20172 , G10L21/0332 , H03H17/0248 , H03H17/0266 , H03H17/0286 , H03H17/0657 , H04R1/22
摘要： A method of digitally filtering an audio signal using an adjusted audio filter. The adjusted audio filter is represented by an impulse response including a waveform in its time domain represented by a sine function of absolute values. A composite audio filter is derived from two adjusted audio filters although any number of filters may be used. The composite audio filter generally includes a bank of the filters which together define a frequency bandwidth representative of the audio signal or spectrum to be filtered. Also a bandpass filter is constructed by combining frequency responses for sine components of absolute values integrated from 0 to bpf and sine components of absolute values integrated from 1/bpf to 0. The frequency response may be the sum of the frequency responses for each of the filters used to create the composite bandpass filter.
摘要翻译： 一种使用调整后的音频滤波器对音频信号进行数字滤波的方法。 经调整的音频滤波器由脉冲响应表示，该脉冲响应包括由绝对值的正弦函数表示的其时域中的波形。 虽然可以使用任意数量的滤波器，但是复合音频滤波器是从两个经过调节的音频滤波器派生的 复合音频滤波器通常包括一组滤波器，它们一起限定代表要滤波的音频信号或频谱的频率带宽。 通过组合从0到bpf积分的绝对值的正弦分量和从1 / bpf到0积分的绝对值的正弦分量的频率响应来构造带通滤波器。频率响应可以是每个频率响应的总和 用于创建复合带通滤波器的滤波器。
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公开(公告)号：EP3198554B1
公开(公告)日：2019-04-24
申请号：EP15844017.2
申请日：2015-09-26
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3.发明公开
公开(公告)号：EP3198723A1
公开(公告)日：2017-08-02
申请号：EP15843391.2
申请日：2015-09-26
CPC分类号： H03H17/0621 , G06F5/01 , G06F17/18 , H03H17/0248 , H03H17/026 , H03H17/0657 , H04R3/04
摘要： A method of increasing the sample rate of a digital signal by creating intermediate sample points between adjacent neighbouring sample points comprising the step of populating each of the intermediate sample points depending on a weighted influence of a predetermined number of the neighbouring sample points, the weighted influence being calculated by representing the digital signal or filter at the predetermined number of sample points at least in part by its cosine components, which are each represented by absolute values of a cosine function in the time domain substantially limited to half a waveform cycle at its mid-point; combining the aforementioned cosine components at each of the neighbouring sample points to obtain waveforms at each of the neighboring sample points; determining values for each of the waveforms at the intermediate sample points and combining the determined values at the intermediate sample point to derive the weighted influence.
摘要翻译： 一种通过在相邻的相邻采样点之间创建中间采样点来增加数字信号的采样率的方法，包括根据预定数量的相邻采样点的加权影响来填充每个中间采样点的步骤，加权影响 通过在预定数目的采样点处至少部分地通过其余弦分量来表示数字信号或滤波器来计算，所述余弦分量分别由时域中的余弦函数的绝对值表示，所述时域中的余弦函数的绝对值基本上限于其中间的波形周期的一半 -点; 组合上述每个相邻采样点处的余弦分量以获得每个相邻采样点处的波形; 确定中间采样点处的每个波形的值并组合中间采样点处的确定值以导出加权影响。
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公开(公告)号：EP3198554A1
公开(公告)日：2017-08-02
申请号：EP15844017.2
申请日：2015-09-26
摘要： Method of processing a digital image comprising increasing the sample resolution of the digital image from a predetermined resolution including neighbouring sample points to an increased resolution including intermediate sample points between adjacent of the neighbouring sample points, and populating each of the intermediate sample points depending on the influence of a predetermined number of the neighbouring sample points, wherein the influence of the predetermined number of neighbouring points are weighted substantially proportional to the proximity of the neighbouring sample points relative to the respective intermediate sample points. Also a computer or device-readable medium and a computer system.
摘要翻译： 处理数字图像的方法包括将数字图像的采样分辨率从包括相邻采样点的预定分辨率提高到包括相邻采样点之间的中间采样点的增加分辨率，并且根据 预定数量的相邻采样点的影响，其中预定数量的相邻点的影响被加权，其基本上与相邻采样点相对于相应中间采样点的接近度成比例。 也是计算机或设备可读介质和计算机系统。
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公开(公告)号：EP2979464A1
公开(公告)日：2016-02-03
申请号：EP14776119.1
申请日：2014-03-26
IPC分类号： H04R1/20 , H03H17/00 , G06F17/17 , G01R23/167
CPC分类号： H04R3/04 , G06F3/165 , G06T5/00 , G06T2207/20024 , G06T2207/20172 , G10L21/0332 , H03H17/0248 , H03H17/0266 , H03H17/0286 , H03H17/0657 , H04R1/22
摘要： A method of digitally filtering an audio signal using an adjusted audio filter. The adjusted audio filter is represented by an impulse response including a waveform in its time domain represented by a sine function of absolute values. A composite audio filter is derived from two adjusted audio filters although any number of filters may be used. The composite audio filter generally includes a bank of the filters which together define a frequency bandwidth representative of the audio signal or spectrum to be filtered. Also a bandpass filter is constructed by combining frequency responses for sine components of absolute values integrated from 0 to bpf and sine components of absolute values integrated from 1/bpf to 0. The frequency response may be the sum of the frequency responses for each of the filters used to create the composite bandpass filter.
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公开(公告)号：EP2979360A1
公开(公告)日：2016-02-03
申请号：EP14775520.1
申请日：2014-03-26
CPC分类号： H04R3/04 , G06F3/165 , G06T5/00 , G06T2207/20024 , G06T2207/20172 , G10L21/0332 , H03H17/0248 , H03H17/0266 , H03H17/0286 , H03H17/0657 , H04R1/22
摘要： A method of digitally filtering an audio signal using an adjusted audio filter. The adjusted audio filter is represented by an impulse response including a waveform in its time domain represented by a sine function of absolute values. A composite audio filter is derived from two adjusted audio filters although any number of filters may be used. The composite audio filter generally includes a bank of the filters which together define a frequency bandwidth representative of the audio signal or spectrum to be filtered. Also a bandpass filter is constructed by combining frequency responses for sine components of absolute values integrated from 0 to bpf and sine components of absolute values integrated from 1/bpf to 0. The frequency response may be the sum of the frequency responses for each of the filters used to create the composite bandpass filter.
摘要翻译： 本发明广泛地涉及通过应用复合音频滤波器对音频信号进行数字滤波的方法。 通过将一个音频滤波器应用于每个具有相同预定采样率的其他音频滤波器（包括相邻采样点），可以获得复合音频滤波器。 另一个音频滤波器还可以包括在其相邻采样点的相邻之间的一个或多个中间采样点。 一个音频滤波器可以相对于另一个音频滤波器以调整后的采样速率应用于另一个音频滤波器。 调整的采样率可以与介入的采样点的数量相对于另一个滤波器的相邻采样点的数量成反比。 使用调整后的采样率推导出的复合滤波器的频率响应曲线可能更适合指示理想化的低通滤波器。 与未调整采样率的频率响应（以虚线所示）相比，调整采样率时的频率响应可能会显示更加钟形的特性。
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