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    • 1. 发明公开
    • Signal conditioner system for musical instruments
    • SignalaufmachungssystemfürMusikinstrumente。
    • EP0425745A1
    • 1991-05-08
    • EP89311434.8
    • 1989-11-03
    • Tracy, Daniel L.
    • Tracy, Daniel L.
    • G10H3/18G10H1/12H03F3/183
    • H03G9/025G10H1/12G10H3/186H03F3/183H03G3/348H03G5/22
    • An audio signal conditioning system is described comprising a power supply (30) for providing a direct current having a predetermined voltage; an input gain control device (36) for receiving the audio sound output signals and for controlling gain; a first transistor amplifier (32) connected to the input gain control (36), the first transistor (32) providing a first amplified output signal from the collector thereof; a second transistor amplifier (34) connected to the first transistor amplifier (32) for receiving amplified signals from the first transistor amplifier (32) and providing a second amplified output signal from the collector thereof; a negative feedback circuit (38) between the first transistor amplifier (32) and the second transistor amplifier (34) for transmitting negative feedback signals from the emitter of the second transistor amplifier (34) to the base of the first transistor amplifier (32); and a regenerative feedback circuit (40) and an associated tone control circuit (42) between the first transistor amplifier (32) and the second transistor amplifier (34) for transmitting regenerative feedback signals from the collector of the second transistor amplifier (34) to the base of the first transistor amplifier (32).
    • 描述了一种音频信号调理系统,其包括用于提供具有预定电压的直流电的电源(30) 输入增益控制装置(36),用于接收音频声音输出信号并用于控制增益; 连接到输入增益控制(36)的第一晶体管放大器(32),第一晶体管(32)从其集电极提供第一放大的输出信号; 连接到第一晶体管放大器(32)的第二晶体管放大器(34),用于接收来自第一晶体管放大器(32)的放大信号,并从其集电极提供第二放大输出信号; 在第一晶体管放大器(32)和第二晶体管放大器(34)之间的负反馈电路(38)用于将负反馈信号从第二晶体管放大器(34)的发射极传送到第一晶体管放大器(32)的基极, ; 以及在第一晶体管放大器(32)和第二晶体管放大器(34)之间的再生反馈电路(40)和相关联的音调控制电路(42),用于将来自第二晶体管放大器(34)的集电极的再生反馈信号传输到 第一晶体管放大器(32)的基极。