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    • 5. 发明专利
    • Audio compressor
    • 音频压缩机
    • JP2012065068A
    • 2012-03-29
    • JP2010206351
    • 2010-09-15
    • Korg Inc株式会社コルグ
    • KOSUGE HIROSHIKANAMORI TOMOAKI
    • H03G7/00G10L21/02H03G11/04H03H17/00
    • PROBLEM TO BE SOLVED: To provide a device by which compression effect is held constant irrespective of an input level of an audio signal.SOLUTION: A gain converter 40 outputs a compression gain obtained by dividing a preset threshold value t by an envelope signal outputted by an envelope detection section 30. A multiplication section 50 multiplies an input signal by the compression gain obtained by the gain converter 40, and outputs it. In this case, an ALC section 10, which inputs the input signal and generates and outputs a certain level signal irrespective of the input level, is disposed before a full-wave rectification section 20. Therefore, signal levels inputted to the full-wave rectification section 20 become identical irrespective of the input level, and the compression effect can be held constant irrespective of the input level.
    • 要解决的问题:提供一种与音频信号的输入电平无关地将压缩效果保持恒定的装置。 解决方案:增益转换器40输出通过将预设阈值t除以由包络检测部分30输出的包络信号而获得的压缩增益。乘法部分50将输入信号乘以由增益转换器获得的压缩增益 40,并输出。 在这种情况下,输入输入信号并产生并输出一定电平信号而与输入电平无关的ALC部分10设置在全波整流部分20之前。因此,输入到全波整流的信号电平 无论输入电平如何,部分20变得相同,并且压缩效果可以保持不变,而与输入电平无关。 版权所有(C)2012,JPO&INPIT
    • 9. 发明专利
    • Limiter circuit
    • 限制电路
    • JP2008219497A
    • 2008-09-18
    • JP2007054446
    • 2007-03-05
    • Mitsubishi Electric Corp三菱電機株式会社
    • YUNOGAMI NORIHIRO
    • H03G11/02H03G11/04
    • PROBLEM TO BE SOLVED: To provide a limiter circuit which gives a stable and high insertion loss characteristic at a limiting mode time period and increases a power handling. SOLUTION: In the limiter circuit which includes a PIN diode shunt-connected between a transmission line and a reference potential, a coupling circuit provided at an input side of the transmission line, and a driver circuit to convert an RF signal taken out of the coupling circuit into a drive current of the PIN diode, the driver circuit has a series-connected detection diode and a shunt-connected detection diode and has a detection circuit to generate a bias voltage to give an input RF signal to the PIN diode by voltage-doubler-detecting it and a matching circuit to give the RF signal of a specific frequency taken out of the coupling circuit to a voltage doubler detection circuit. COPYRIGHT: (C)2008,JPO&INPIT
    • 要解决的问题:提供一种限制电路,其在限制模式时间段提供稳定和高插入损耗特性并增加功率处理。 解决方案:在包括分压连接在传输线和参考电位之间的PIN二极管的限幅器电路中,设置在传输线的输入侧的耦合电路和用于转换所取出的RF信号的驱动电路 的耦合电路成为PIN二极管的驱动电流,驱动电路具有串联检测二极管和并联检测二极管,并具有检测电路,以产生偏置电压,以向PIN二极管提供输入RF信号 通过对其进行倍压检测和匹配电路,将从耦合电路取出的特定频率的RF信号提供给倍压器检测电路。 版权所有(C)2008,JPO&INPIT