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1. 发明申请

US20080069377A1 AUDIO PROCESSING SYSTEM AND METHOD 审中-公开
标题翻译：音频处理系统和方法
公开(公告)号：US20080069377A1
公开(公告)日：2008-03-20
申请号：US11617697
申请日：2006-12-28
申请人： Shih-Fang Wong , Tsung-Jen Chuang , Jian-Lin Liu
发明人： Shih-Fang Wong , Tsung-Jen Chuang , Jian-Lin Liu
IPC分类号： H03G5/00 , H04R29/00
CPC分类号： H03G5/04 , H03G5/18
摘要： An audio processing system includes an audio input apparatus, a frequency selecting unit, and an audio output apparatus. The audio input apparatus is used for receiving audio waves, and converting the audio waves to electric signals. The frequency selecting unit is used for filtering the electric signals, and generating filtered electric signals, the frequency selecting unit having adjustable passing-range. The audio output apparatus is used for converting the filtered electric signals into audible sound. An audio processing method for filtering inputted signals in a predetermined passing-range is also disclosed.
摘要翻译：音频处理系统包括音频输入设备，频率选择单元和音频输出设备。音频输入装置用于接收音频波，并将音频波转换成电信号。频率选择单元用于对电信号进行滤波，并产生滤波后的电信号，频率选择单元具有可调节的通过范围。音频输出装置用于将滤波的电信号转换为可听见的声音。还公开了用于滤波预定通过范围内的输入信号的音频处理方法。

2. 发明授权

US07271659B2 High speed amplifier incorporating pre-emphasis 有权
标题翻译：高速放大器包含预加重
公开(公告)号：US07271659B2
公开(公告)日：2007-09-18
申请号：US10997591
申请日：2004-11-24
申请人： Alexander Roger Deas , Igor Anatolievich Abrosimov
发明人： Alexander Roger Deas , Igor Anatolievich Abrosimov
IPC分类号： H03F1/14
CPC分类号： H03F3/45475 , H03F1/086 , H03F3/211 , H03F3/45188 , H03F2203/45648 , H03F2203/45696 , H03G5/04 , H03H15/00 , H03K2005/00208
摘要： An amplifier circuit for receiving an input signal and providing an output signal, comprises a main chain of logic stages with a plurality of nodes therebetween, and at least one auxiliary chain nested between one node in the main chain and another node, which is not the next node, to form a series of feed back or feed forward nested equalisation loops; whereby the input signal is fed serially down the main chain and is also fed through the said at least one auxiliary chain and summed to provide the output signal. The invention overcomes gain-bandwidth limits of the drive stages and bandwidth reductions that occur when analogue stages operating in a linear mode are concatenated.
摘要翻译：一种用于接收输入信号并提供输出信号的放大器电路，包括主链逻辑级，其间具有多个节点，以及嵌套在主链中的一个节点和另一节点之间的至少一个辅助链，其不是形成一系列反馈或前馈嵌套均衡环路; 由此输入信号被串行地向下馈送到主链，并且还通过所述至少一个辅助链进给并相加以提供输出信号。本发明克服了以线性模式工作的模拟级连接时发生的驱动级和带宽减小的增益带宽限制。

3. 发明授权

US5509080A Bass clipping circuit 失效
标题翻译：低音削波电路
公开(公告)号：US5509080A
公开(公告)日：1996-04-16
申请号：US208898
申请日：1994-03-14
申请人： John H. Roberts
发明人： John H. Roberts
IPC分类号： H03G5/04 , H03G11/02 , H04R5/04 , H03G5/00 , H04S3/00
CPC分类号： H04R5/04 , H03G11/02 , H03G5/04
摘要： A clipping circuit is coupled across the bass feedback shunt capacitor in an amplifier circuit to effectively reduce only high level bass signals while allowing level high frequencies to pass and allowing full boost to low level, low frequency signals.
摘要翻译：削波电路在放大器电路中的低音反馈并联电容器之间耦合，以有效地仅降低高电平低音信号，同时允许电平高频通过并允许将全部升压到低电平低频信号。

4. 发明授权

US5172358A Loudness control circuit for an audio device 失效
标题翻译：用于音频设备的响度控制电路
公开(公告)号：US5172358A
公开(公告)日：1992-12-15
申请号：US487425
申请日：1990-03-02
申请人： Shigenobu Kimura
发明人： Shigenobu Kimura
IPC分类号： H03G9/00 , H03G5/00 , H03G5/04 , H03G9/02
CPC分类号： H03G9/005 , H03G5/005 , H03G5/04 , H03G9/02
摘要： A loudness control circuit for an audio device used in a reproduction circuit for reproducing a music signal recorded on a recording medium comprises one or plural level detection circuits for detecting levels of signal components of low and high frequency regions of a reproduced signal and control circuits for controlling the levels of the signal components of low and high frequency regions of the reproduced signal in response to outputs of the level detection circuits. The level control is made in accordance with a sound-pressure level for each frequency region of a reproduced signal so that an optimum compensation of the level in response to the sound-pressure level becomes possible.
摘要翻译：在用于再现记录介质上记录的音乐信号的再现电路中使用的用于音频装置的响度控制电路包括一个或多个电平检测电路，用于检测再现信号的低频区域和高频区域的信号分量的电平，以及控制电路响应于电平检测电路的输出，控制再现信号的低频区域和高频区域的信号分量的电平。根据再现信号的每个频率区域的声压级进行电平控制，使得响应于声压级的电平的最佳补偿成为可能。

5. 发明授权

US5046106A Varying loudspeaker spatial characteristics in a vehicle 失效
标题翻译：扬声器在车辆中的空间特性不同
公开(公告)号：US5046106A
公开(公告)日：1991-09-03
申请号：US466994
申请日：1990-01-18
申请人： Craig Liebel , Richard McFadyen
发明人： Craig Liebel , Richard McFadyen
IPC分类号： H04R3/04 , B60R11/02 , H03G5/04 , H03G9/02 , H04R3/12 , H04S5/02 , H04S7/00
CPC分类号： H04S7/307 , H03G5/04 , H03G9/02 , H04S7/302 , H04R2499/13
摘要： A shifting control is operative in a first region for varying the treble and midrange components of a sound signal as variously applied to the speakers of a multi-speaker system while the bass component remains unchanged, and is operative in a second region wherein all frequency components can be substantially attenuated.

6. 发明授权

US4980914A Sound field correction system 失效
标题翻译：声场校正系统
公开(公告)号：US4980914A
公开(公告)日：1990-12-25
申请号：US418042
申请日：1989-10-06
申请人： Yoshiro Kunugi , Akio Tokumo , Toshikazu Yoshimi , Yoshio Sasaki , Shinjiro Kato
发明人： Yoshiro Kunugi , Akio Tokumo , Toshikazu Yoshimi , Yoshio Sasaki , Shinjiro Kato
IPC分类号： H03G5/04 , H04R3/04 , H04S1/00
CPC分类号： H04S1/002 , H03G5/04 , H04R3/04
摘要： A sound field correcting system for correcting for mulitpath frequency-characteristic distortion in an acoustic reproducing system. In one embodiment, the level and delay of an original signal are adjusted and superposed on the original signal so as to obtain a signal which, when reproduced by a loudspeaker, yields a sound pattern at a listening point having a flat frequency characteristic. The delay adjustment is effected in accordance with a difference between the travel distances of direct and reflected sound waves to the listening point.

7. 发明授权

US4845775A Loudspeaker reproduction apparatus in vehicle 失效
标题翻译：车载扬声器再生装置
公开(公告)号：US4845775A
公开(公告)日：1989-07-04
申请号：US125279
申请日：1987-11-25
申请人： Akira Kanagawa
发明人： Akira Kanagawa
IPC分类号： H04R5/02 , H03G5/04 , H04R3/04 , H04R3/12 , H04S5/02 , H04S7/00
CPC分类号： H04S7/302 , H03G5/04 , H04S5/02 , H04R2499/13 , H04S7/307
摘要： In a loudspeaker system having an adjustable balance between two speakers having different low frequency reproduction characteristics, the attenuation of low frequency signals applied to the loudspeaker with the better low frequency reproduction characteristics is selectively inhibited even when the balance is adjusted toward the other loudspeaker, so that an adequate low frequency sound will be produced at all times.
摘要翻译：在具有不同低频再现特性的两个扬声器之间具有可调平衡的扬声器系统中，即使当平衡被调整到另一个扬声器时，选择性地抑制施加到具有更好的低频再现特性的扬声器的低频信号的衰减，因此在任何时候都会产生足够的低频声音。

8. 发明授权

US4523156A Anti-distortion anti-transient tone control circuit 失效
标题翻译：抗失真抗瞬态音调控制电路
公开(公告)号：US4523156A
公开(公告)日：1985-06-11
申请号：US517185
申请日：1983-07-25
申请人： Don R. Sauer
发明人： Don R. Sauer
IPC分类号： H03G5/04 , H03G9/14 , H03G9/16
CPC分类号： H03G9/14 , H03G5/04
摘要： A tone control circuit including an amplifier having a continuously adjustable frequency response control for varying the effect of low and high frequency filters upon the amplifier, and incorporating a novel distortion and transient suppression circuit is disclosed. A programmable variable resistance is coupled between an input and an output of said amplifier to attenuate circuit low frequency response while initially varying resistor value in response to a programming distortion/transient control signal. Thereafter, overall amplifier gain is further varied in response to the programming distortion/transient control signal by further adjusting the variable resistor value. Various embodiments of the invention provide both continuous and discrete control of tone and volume responsive to both excessive low frequency signal and transients. The present invention is implemented in both discrete and monolithic embodiments, which include both linear and CMOS technologies.
摘要翻译：一种音调控制电路，包括具有连续可调的频率响应控制的放大器，用于改变放大器上的低频和高频滤波器的影响，并结合了新的失真和瞬态抑制电路。可编程可变电阻耦合在所述放大器的输入和输出之间，以便在响应编程失真/瞬态控制信号最初改变电阻值时衰减电路的低频响应。此后，通过进一步调整可变电阻值，总体放大器增益响应于编程失真/瞬态控制信号而进一步变化。本发明的各种实施例提供响应于过低的低频信号和瞬变的音调和音量的连续和离散的控制。本发明在离散和单片实施例中实现，其包括线性和CMOS技术。

9. 发明授权

US4432097A Tone control circuit 失效
标题翻译：音调控制电路
公开(公告)号：US4432097A
公开(公告)日：1984-02-14
申请号：US296411
申请日：1981-08-24
申请人： Takashi Okada , Hajime Nakajima
发明人： Takashi Okada , Hajime Nakajima
IPC分类号： H03G5/02 , H03G5/04 , H03G5/10 , H03G5/14
CPC分类号： H03G5/10 , H03G5/04
摘要： A tone control circuit which has a first signal path which passes an input signal directly and a second signal path which includes at least a filter and a gain control circuit and an adder receiving the first signal and the second signal and control means for providing a control voltage to the gain control circuit and switching means for controlling the gain control circuit to selectively control the output of the adder to produce an output signal with the desired selected frequency response.
摘要翻译： PCT No.PCT / JP80 / 00328 Sec。 371日期1981年8月24日 102（e）日期1981年8月24日PCT提交1980年12月25日PCT公布。第WO81 / 01922号公报日期：1981年7月9日。一种音调控制电路，其具有直接通过输入信号的第一信号路径和至少包括滤波器和增益控制电路的第二信号路径以及接收第一信号和第二信号的加法器以及用于向增益控制电路提供控制电压的控制装置和用于控制增益控制电路的切换装置，以选择性地控制加法器的输出以产生具有所需选定频率响应的输出信号。

10. 发明授权

US4403201A Bandpass filter circuit 失效
标题翻译：带通滤波电路
公开(公告)号：US4403201A
公开(公告)日：1983-09-06
申请号：US245073
申请日：1981-03-18
申请人： Kenji Yokoyama
发明人： Kenji Yokoyama
IPC分类号： H03G5/02 , H03G5/04 , H03H11/04 , H03G5/14
CPC分类号： H03G5/04 , H03G5/025
摘要： A bandpass filter circuit includes first and second resistors connected in series between input and output terminals thereof, an amplifier having a gain of three and its output connected to the output terminal, and an RC circuit network connected between the connection point of the first and second resistors and the input of the amplifier and having bandpass characteristics. The RC circuit network comprises a series combination of a third resistor and a first capacitor connected between the connection point of the first and second resistors and the input of the amplifier, and a parallel combination of a fourth resistor and a second capacitor connected between the input of the amplifier and a common terminal of the filter circuit. The third and fourth resistors have an equal resistance value and the first and second capacitors have an equal capacitance value. As one of the first and second resistors use may be made of a variable resistor to change the quality factor, and the third and fourth resistors may be variable resistors ganged with each other to change the center frequency of the passband.
摘要翻译：带通滤波器电路包括串联连接在其输入端和输出端之间的第一和第二电阻器，具有增益为三的放大器，其输出端连接到输出端子，以及连接在第一和第二端子的连接点之间的RC电路网络电阻和放大器的输入并具有带通特性。 RC电路网络包括连接在第一和第二电阻器的连接点和放大器的输入端之间的第三电阻器和第一电容器的串联组合，以及连接在输入端之间的第四电阻器和第二电容器的并联组合的放大器和滤波器电路的公共端子。第三和第四电阻器具有相等的电阻值，并且第一和第二电容器具有相等的电容值。由于第一和第二电阻器中的一个可以由可变电阻器构成以改变品质因数，并且第三和第四电阻器可以是可变电阻器彼此组合以改变通带的中心频率。

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