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    • 2. 发明申请
    • SYSTEM AND METHOD FOR VARYING LEVELS OF LOW AUDIO FREQUENCES INVERSELY WITH AUDIO SIGNAL LEVEL
    • 低音频频率随音频信号电平变化的系统和方法
    • WO0221687A3
    • 2003-04-24
    • PCT/US0128148
    • 2001-09-06
    • HARMAN INT INDSHUTTLEWORTH TIMOTHY
    • SHUTTLEWORTH TIMOTHY
    • H03G1/00H03G5/16H03G5/22H03G9/04
    • H03G5/165H03G1/0047H03G5/22
    • The invention relates to an auto loudness circuit (350) for performing loudness compensation automatically depending on the signal level. When the signal level decreases, loudness compensation is slowly introduced and as the signal level increases, loudness compensation is quickly removed. To do so, the auto loudness circuit (350) utilizes a filter circuit (430, 530, 545) with the characteristic of a first order bass boost. The filter circuit (430, 530, 545) maintains a corner frequency which is proportional to the inverse of audio level in order to mimic the Fletcher-Munson curves. Because the circuit employs a capacitance-multiplier (530) with a first order resistance capacitance filter, the bass boost is inversely proportional to the signal level. Thus, bass boost is achieved automatically as the program content changes so that the listener is unaware of significant changes in program material as signal levels change either through increase or decrease in volume, crescendo or new material.
    • 本发明涉及一种根据信号电平自动执行响度补偿的自动响度电路(350)。 当信号电平降低时,缓慢引入响度补偿,随着信号电平的增加,响度补偿被快速消除。 为了这样做,自动响度电路(350)利用具有第一级低音提升特性的滤波器电路(430,530,545)。 滤波器电路(430,530,545)保持与音频电平的倒数成比例的转角频率,以便模拟弗莱彻 - 芒森曲线。 因为电路采用带有一阶电阻电容滤波器的电容倍增器(530),所以低音提升与信号电平成反比。 因此,随着节目内容的变化,自动实现低音提升,使得收听者不会因为音量,渐强或新素材的增加或减少而改变信号水平而改变节目素材。
    • 3. 发明申请
    • PERMANENT MAGNET DRUM SEPARATOR WITH MOVABLE MAGNETIC ELEMENTS
    • 具有可移动磁性元件的永久磁铁分离器
    • WO2011085001A3
    • 2013-01-17
    • PCT/US2011020223
    • 2011-01-05
    • ERIEZ MFG COSHUTTLEWORTH TIMOTHY GROSS MICHAELCEDZO CHRISTOPHER DPALOMBO RODNOWAK GREGORY
    • SHUTTLEWORTH TIMOTHY GROSS MICHAELCEDZO CHRISTOPHER DPALOMBO RODNOWAK GREGORY
    • B03C1/16B03C1/247
    • B03C1/14B03C1/12B03C2201/20
    • What is presented is a permanent magnet drum separator for removal of a ferrous fraction from a material stream comprising a pickup magnet that is a rare earth permanent magnet that can be moved within the drum separator. The drum separator comprises a rotatable outer shell having tubular shape with a circular cross section. The drum separator includes a carry magnet that is positioned at a fixed location within the rotatable outer shell near the inside circumference of the rotatable outer shell. The pickup magnet is positioned on a hinge plate within the rotatable outer shell. The hinge plate has a first end attached to a hinge and a second end attached to a movable element. The hinge is positioned at a fixed location within the rotatable outer shell near the inside circumference of said rotatable outer shell. The movable element is able to move the pickup magnet about the hinge to vary the distance between the pickup magnet and the inside circumference of the rotatable outer shell.
    • 所提出的是用于从包括可在滚筒分离器内移动的稀土永磁体的拾取磁体的材料流中除去亚铁馏分的永磁鼓分离器。 鼓分离器包括具有圆形横截面的管状形状的可旋转外壳。 鼓分离器包括位于可旋转外壳内靠近可旋转外壳的内圆周的固定位置处的携带磁体。 拾取磁体位于可旋转外壳内的铰链板上。 铰链板具有附接到铰链的第一端和附接到可移动元件的第二端。 铰链位于可旋转外壳内靠近所述可旋转外壳的内圆周的固定位置。 可移动元件能够使拾取磁体绕铰链移动,以改变拾取磁体与可旋转外壳的内圆周之间的距离。