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1. 发明申请

US20120140952A1 AUDIO REPRODUCING APPARATUS 有权
标题翻译：音频再现设备
公开(公告)号：US20120140952A1
公开(公告)日：2012-06-07
申请号：US13311649
申请日：2011-12-06
申请人： Masaru Shimura , Taro Nakagami , Kazunobu Ohkuri
发明人： Masaru Shimura , Taro Nakagami , Kazunobu Ohkuri
IPC分类号： H03G5/00
CPC分类号： H04R3/04 , H03G5/165 , H04R2430/03
摘要： An audio signal processing apparatus and method for extracting components from an input signal, generating additional components, combining components, and level-controlling components. An audio signal processing apparatus may include a harmonic overtone adder and an equalizer. A harmonic overtone adder may include a high-pass filter, a low-pass filter, an harmonic overtone generator, and a combining unit. An equalizer may include a level detector and a gain controller.
摘要翻译：一种用于从输入信号中提取组件，产生附加组件，组合组件和级别控制组件的音频信号处理设备和方法。音频信号处理装置可以包括谐波泛音加法器和均衡器。谐波泛音加法器可以包括高通滤波器，低通滤波器，谐波泛音发生器和组合单元。均衡器可以包括电平检测器和增益控制器。

2. 发明授权

US08150067B2 Bass enhancing method, signal processing device, and audio reproducing system 失效
标题翻译：低音增强方法，信号处理装置和音频再现系统
公开(公告)号：US08150067B2
公开(公告)日：2012-04-03
申请号：US12075538
申请日：2008-03-12
申请人： Kazunobu Ohkuri , Taro Nakagami , Masaru Shimura
发明人： Kazunobu Ohkuri , Taro Nakagami , Masaru Shimura
IPC分类号： H03G5/00
CPC分类号： H04R3/04 , H03G5/165 , H04R3/08
摘要： If the absolute value of the current sample is greater than or equal to an envelope value at the immediately preceding sample, an envelope value at the current sample is made greater than the envelope value at the immediately preceding sample. If the absolute value of the current sample is smaller than the envelope value at the immediately preceding sample and a count value C does not reach a predetermined number N, the count value C is incremented by one and the envelope value at the current sample is held at the envelope value at the immediately preceding sample. If the absolute value of the current sample is smaller than the envelope value at the immediately preceding sample and the count value C reaches the predetermined number N, the envelope value at the current sample is made smaller than the envelope value at the immediately preceding sample.
摘要翻译：如果当前样本的绝对值大于或等于紧接在前样本的包络值，则使当前样本的包络值大于紧接在前样本的包络值。如果当前采样的绝对值小于紧接在前的采样的包络值，并且计数值C未达到预定数量N，则计数值C增加1，并且保持当前采样的包络值在前一样品的包络值处。如果当前样本的绝对值小于紧接在前样本的包络值，并且计数值C达到预定数量N，则使当前样本的包络值小于紧接在前样本的包络值。

3. 发明授权

US08094835B2 Signal processing apparatus 失效
标题翻译：信号处理装置
公开(公告)号：US08094835B2
公开(公告)日：2012-01-10
申请号：US11903568
申请日：2007-09-24
申请人： Masaru Shimura , Taro Nakagami , Kazunobu Ohkuri
发明人： Masaru Shimura , Taro Nakagami , Kazunobu Ohkuri
IPC分类号： H04B15/00
CPC分类号： H03G5/16 , H04R3/04 , H04R5/04
摘要： A signal processing apparatus includes first and second extracting units extracting frequency components having a first frequency band and a second frequency band, respectively, from an input audio signal, a first-harmonic-component generating unit generating a first-harmonic-component signal including a frequency component whose frequency is N1 times that of the frequency component extracted in the first extracting unit, a second-harmonic-component generating unit generating a second-harmonic-component signal including a frequency component whose frequency is N2 times that of the frequency component extracted in the second extracting unit, and a combining unit combining the input audio signal, and the first- and the second-harmonic-component signals in a predetermined ratio. The first frequency band is higher than the second frequency band. N1 and N2 are positive integers, and N1 is smaller than N2.
摘要翻译：信号处理装置包括分别从输入音频信号中提取具有第一频带和第二频带的频率分量的第一和第二提取单元，产生包括第一频率分量的第一谐波分量信号的第一谐波分量产生单元频率分量，其频率是在第一提取单元中提取的频率分量的频率的N1倍;二次谐波分量产生单元，其生成包括频率为提取的频率分量的频率的N2的频率分量的二次谐波分量信号以及以预定比例组合输入音频信号和第一和第二谐波分量信号的组合单元。第一频带高于第二频带。 N1和N2是正整数，N1小于N2。

4. 发明申请

US20100318205A1 SIGNAL PROCESSING APPARATUS AND SIGNAL PROCESSING METHOD 审中-公开
标题翻译：信号处理装置和信号处理方法
公开(公告)号：US20100318205A1
公开(公告)日：2010-12-16
申请号：US12795117
申请日：2010-06-07
申请人： Kazunobu Ohkuri , Kohei Asada , Michiaki Yoneda , Tetsunori Itabashi
发明人： Kazunobu Ohkuri , Kohei Asada , Michiaki Yoneda , Tetsunori Itabashi
IPC分类号： G06F17/00
CPC分类号： H04R3/002 , H04R3/04
摘要： A signal processing apparatus includes: analog-to-digital conversion means that receives an analog detection signal acquired by detecting a movement of a diaphragm of a speaker, converts it into a digital signal by performing a first delta sigma modulation process, and outputs the digital signal; signal processing means that receives the digital detection signal output, generates a digital feedback signal, and outputs the digital feedback signal; synthesis means that converts an input digital audio signal to have a same sampling frequency as the feedback signal and then combines the input digital audio signal with the feedback signal as negative feedback; and digital-to-analog conversion means having a portion for a second delta sigma modulation process in which the digital audio signal after combination with the feedback signal is input, and the digital audio signal is converted into a digital signal and performing conversion of the digital audio signal into an analog signal.
摘要翻译：信号处理装置包括：模数转换装置，其接收通过检测扬声器的振动膜的移动而获取的模拟检测信号，通过执行第一Δ-Σ调制处理将其转换为数字信号，并输出数字信号; 信号处理装置，其接收数字检测信号输出，产生数字反馈信号，并输出数字反馈信号; 合成装置将输入数字音频信号转换为具有与反馈信号相同的采样频率，然后将输入数字音频信号与反馈信号组合为负反馈; 以及数模转换装置，其具有用于第二Δ-Σ调制处理的部分，其中与反馈信号组合之后的数字音频信号被输入，并且数字音频信号被转换成数字信号并执行数字信号的转换音频信号转换为模拟信号。

5. 发明申请

US20060012428A1 Class-D amplifier 失效
标题翻译： D类放大器
公开(公告)号：US20060012428A1
公开(公告)日：2006-01-19
申请号：US11179903
申请日：2005-07-12
申请人： Kazunobu Ohkuri
发明人： Kazunobu Ohkuri
IPC分类号： H03F3/217
CPC分类号： H03F3/217 , H03F3/2173 , H03F2200/331 , H03F2200/468
摘要： A class-D amplifier has a switching amplifying-unit, which includes a pair of switching elements. The unit drives the switching elements and generates pulse amplified switching signals. The amplifier also has a signal-generating unit, which generates pulse width modulation signals each for driving the switching elements and supplies the generated pulse-width modulation signals to the switching amplifying-unit. The switching amplifying-unit includes a detecting sub-unit, which detects an operating state of the switching elements. The signal-generating unit includes a dead-time-setting sub-unit, which sets dead time relative to the switching elements by delaying each of the pulse width modulation signals using propagation delay time in logic devices. The signal-generating unit also includes a control sub-unit, which controls the dead-time-setting sub-unit based on a detected result of the detecting sub-unit to change the dead time based on the operating state of the switching elements.
摘要翻译： D类放大器具有开关放大单元，其包括一对开关元件。该单元驱动开关元件并产生脉冲放大开关信号。放大器还具有信号产生单元，其产生用于驱动开关元件的脉冲宽度调制信号，并将产生的脉宽调制信号提供给开关放大单元。开关放大单元包括检测开关元件的工作状态的检测子单元。信号发生单元包括死区时间设置子单元，其通过使用逻辑器件中的传播延迟时间来延迟每个脉冲宽度调制信号来设置相对于开关元件的死区时间。信号发生单元还包括控制子单元，其基于检测子单元的检测结果来控制死区设置子单元，以基于开关元件的操作状态改变死区时间。

6. 发明申请

US20050174176A1 Power amplification device 有权
标题翻译：功率放大器
公开(公告)号：US20050174176A1
公开(公告)日：2005-08-11
申请号：US10514178
申请日：2003-05-01
申请人： Kazunobu Ohkuri , Toshihiko Masuda
发明人： Kazunobu Ohkuri , Toshihiko Masuda
IPC分类号： H03F3/217 , H03F3/30 , H04B15/06 , H03F3/18
CPC分类号： H03F3/2173 , H03F3/2171 , H03F2200/331
摘要： A class D power amplifier (1) switches a power supply voltage VDD at high-speed in response to an input digital audio signal Pin to power-amplify the digital audio signal Pin, and supplies a speaker (2) with the amplified signal. In the case of being incorporated in an AM receiver formed integrally with an AM tuner (3) for receiving AM broadcasts, the class D power amplifier (1) can reduces influence of reception interference with respect to the AM tuner (3). As a result, it is possible to provide a power amplifier that can suppress unnecessary radiation to reduce reception interference with respect to the tuner, not by changing a carrier frequency, but by controlling the drive signal generation systems.
摘要翻译： D类功率放大器（1）响应于中的输入数字音频信号P _{高速切换电源电压V DD，以对数字音频进行放大信号P _{，并向扬声器（2）提供放大信号。在与用于接收AM广播的AM调谐器（3）一体形成的AM接收机的情况下，D类功率放大器（1）可以减少对AM调谐器（3）的接收干扰的影响。结果，可以提供能够抑制不必要的辐射的功率放大器，而不是通过改变载波频率而是通过控制驱动信号发生系统来减少对调谐器的接收干扰。}}

7. 发明授权

US06586991B2 Digital power amplifier 失效
标题翻译：数字功率放大器
公开(公告)号：US06586991B2
公开(公告)日：2003-07-01
申请号：US09992605
申请日：2001-11-14
申请人： Toshihiko Masuda , Kazunobu Ohkuri
发明人： Toshihiko Masuda , Kazunobu Ohkuri
IPC分类号： H03F338
CPC分类号： H03F3/2171 , H03F2200/331
摘要： A digital power amplifier including a switching control device for generating a first switching control signal and a second switching control signal which results from inverting the first switching control signal at an equal timing based upon an inputted audio signal, wherein the first and second switching control signals generated from the switching control device are respectively supplied to control terminals of first and second switching devices so that the first and second switching devices are driven in a push-pull manner to produce an audio signal amplified when the power source is switched. Output characteristics are prevented from being deteriorated by noise from the power source by canceling out radiation of the signals generated from the two switching devices and deterioration of outputted audio characteristics due to noise from the power source is prevented.
摘要翻译：一种数字功率放大器，包括用于产生第一开关控制信号的开关控制装置和基于输入的音频信号以相同的定时使第一开关控制信号反相产生的第二开关控制信号，其中第一和第二开关控制信号从开关控制装置产生的信号分别提供给第一和第二开关装置的控制端子，使得第一和第二开关装置以推挽方式被驱动以产生在切换电源时放大的音频信号。通过消除由两个开关装置产生的信号的辐射，防止输出特性被来自电源的噪声恶化，并且防止了由于来自电源的噪声导致的输出音频特性的恶化。

8. 发明授权

US09245517B2 Noise reduction audio reproducing device and noise reduction audio reproducing method 有权
标题翻译：降噪音频再现装置和降噪音频再现方法
公开(公告)号：US09245517B2
公开(公告)日：2016-01-26
申请号：US12486054
申请日：2009-06-17
申请人： Kohei Asada , Shiro Suzuki , Tetsunori Itabashi , Kazunobu Ohkuri
发明人： Kohei Asada , Shiro Suzuki , Tetsunori Itabashi , Kazunobu Ohkuri
IPC分类号： G10K11/178 , G10L21/06
CPC分类号： G10K11/178 , G10K2210/1053 , G10K2210/1081 , G10L2021/065 , H04R29/004 , H04R2460/01
摘要： A noise reduction audio reproducing method includes the steps of: generating, from an audio signal of collected and obtained noise, an audio signal for noise cancellation to cancel the noise by synthesizing the audio signal for noise cancellation and the noise in an acoustic manner, reproducing the audio signal for noise cancellation acoustically to synthesize this with the noise in an acoustic manner; emphasizing an audio component to be listened to, of collected audio; synthesizing an audio signal with the audio component to be listened to being emphasized, and the audio signal for noise cancellation to supply the synthesized signal thereof to an electro-acoustic converting unit; and controlling so as to supply an audio signal, with the audio component to be listened to having been emphasized, to a synthesizing unit, regarding only a section based on a control signal.
摘要翻译：降噪音频再现方法包括以下步骤：从收集和获得的噪声的音频信号中产生用于噪声消除的音频信号以通过以声学方式合成用于噪声消除的音频信号和噪声来消除噪声，再现用于声学噪声消除的音频信号以声学方式与噪声合成; 强调要收听的音频成分; 合成音频信号与待收听的音频分量被强调，以及用于噪声消除的音频信号，以将其合成信号提供给电声转换单元; 并且控制以将要被收听的已被强调的音频分量的音频信号提供给仅基于控制信号的部分的合成单元。

9. 发明授权

US08737642B2 Audio reproducing apparatus 有权
标题翻译：音频再现装置
公开(公告)号：US08737642B2
公开(公告)日：2014-05-27
申请号：US13311649
申请日：2011-12-06
申请人： Masaru Shimura , Taro Nakagami , Kazunobu Ohkuri
发明人： Masaru Shimura , Taro Nakagami , Kazunobu Ohkuri
IPC分类号： H03G5/00
CPC分类号： H04R3/04 , H03G5/165 , H04R2430/03
摘要： An audio signal processing apparatus and method for extracting components from an input signal, generating additional components, combining components, and level-controlling components. An audio signal processing apparatus may include a harmonic overtone adder and an equalizer. A harmonic overtone adder may include a high-pass filter, a low-pass filter, an harmonic overtone generator, and a combining unit. An equalizer may include a level detector and a gain controller.
摘要翻译：一种用于从输入信号中提取组件，产生附加组件，组合组件和级别控制组件的音频信号处理设备和方法。音频信号处理装置可以包括谐波泛音加法器和均衡器。谐波泛音加法器可以包括高通滤波器，低通滤波器，谐波泛音发生器和组合单元。均衡器可以包括电平检测器和增益控制器。

10. 发明申请

US20080186218A1 SIGNAL PROCESSING APPARATUS AND SIGNAL PROCESSING METHOD 有权
标题翻译：信号处理装置和信号处理方法
公开(公告)号：US20080186218A1
公开(公告)日：2008-08-07
申请号：US11966168
申请日：2007-12-28
申请人： Kazunobu OHKURI , Kohei Asada , Ayataka Nishio
发明人： Kazunobu OHKURI , Kohei Asada , Ayataka Nishio
IPC分类号： H03M3/00
CPC分类号： G10K11/178 , G10K2210/1081 , G10L21/0208 , G10L2021/02165
摘要： Disclosed herein is a signal processing apparatus including: analog-to-digital conversion means for performing delta sigma modulation of generating a digital signal having a predetermined sampling frequency and a predetermined quantization bit rate of one or more bits based on an input analog signal; signal processing means including a digital filter having a characteristic for outputting a digital signal having a sampling frequency n×Fs (Fs is a reference sampling frequency) and a quantization bit rate of a bits (a is a natural number greater than one) based on the above digital signal; and digital-to-analog conversion means including a part for performing delta sigma modulation for outputting a digital signal having a sampling frequency n×Fs and a quantization bit rate of b bits (b is a natural number greater than zero and less than a) based on a digital signal outputted from the signal processing means.
摘要翻译：本文公开了一种信号处理装置，包括：模数转换装置，用于基于输入的模拟信号，执行产生具有预定采样频率和一个或多个位的预定量化比特率的数字信号的Δ-Σ调制; 信号处理装置包括数字滤波器，该数字滤波器具有用于基于上述输出具有采样频率nxFs（Fs是参考采样频率）和比特（a是大于1的自然数的一个的量化比特率）的数字信号的特性数字信号; 以及数模转换装置，包括用于执行ΔΣ调制的部分，用于输出具有采样频率nxFs和b位量化比特率（b是大于零和小于a的自然数）的数字信号，基于从信号处理装置输出的数字信号。

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