Semiconductor emulation of tube amplifiers
    111.
    发明授权
    Semiconductor emulation of tube amplifiers 失效
    管放大器的半导体仿真

    公开(公告)号:US4995084A

    公开(公告)日:1991-02-19

    申请号:US280213

    申请日:1988-11-01

    申请人: Eric K. Pritchard

    发明人: Eric K. Pritchard

    摘要: A semiconductor system analog or digital processor (402) for emulating a vacuum tube amplifier having first distortion (372), tone control (373), and second distortion (374) circuits. The first distortion circuit (372) variably introduces even harmonics and the second distortion circuit (374) introduces even and odd harmonics. The second distortion circuit includes a variable gain circuit using diodes (275-286) and resistors (287-293) to progressively increase output current with increasing input voltage and clipping circuit. A speaker driving a microphone emulation circuit (379) is also provided. A distortion circuit varies the gain and harmonic contents as a function of amplitude, duration and number of cycles. An asymmetrical bias shifting circuit (60, 70) with a limiter also introduces even harmonics.

    摘要翻译: 一种用于仿真具有第一失真(372),色调控制(373)和第二失真(374))电路的真空管放大器的半导体系统模拟或数字处理器(402)。 第一失真电路(372)可变地引入偶次谐波,第二失真电路(374)引入偶次和奇次谐波。 第二失真电路包括使用二极管(275-286)和电阻器(287-293)的可变增益电路,随着输入电压和限幅电路的增加逐渐增加输出电流。 还提供驱动麦克风仿真电路(379)的扬声器。 失真电路根据幅度,持续时间和周期数来改变增益和谐波含量。 具有限制器的不对称偏置偏移电路(60,70)还引入偶数谐波。

    Sound amplifiers
    112.
    发明授权
    Sound amplifiers 失效
    声音放大器

    公开(公告)号:US4330754A

    公开(公告)日:1982-05-18

    申请号:US114513

    申请日:1980-01-23

    申请人: Peter Hartley

    发明人: Peter Hartley

    CPC分类号: H03F1/327 H03F3/181

    摘要: A transistor amplifier of the invention comprises a low power solid state simulator for a push-pull transformer-coupled vacuum tube power amplifier. The simulator develops overtones and distortion characteristics associated with a vacuum tube power amplifier, thereby producing a vacuum tube sound from the transistor amplifier.

    摘要翻译: 本发明的晶体管放大器包括用于推挽变压器耦合的真空管功率放大器的低功率固态模拟器。 模拟器产生与真空管功率放大器相关联的泛音和失真特性,从而从晶体管放大器产生真空管声音。

    Dual mode music instrument amplifier
    113.
    发明授权
    Dual mode music instrument amplifier 失效
    双模乐器放大器

    公开(公告)号:US4211893A

    公开(公告)日:1980-07-08

    申请号:US959705

    申请日:1978-11-13

    申请人: Randall C. Smith

    发明人: Randall C. Smith

    摘要: An electronic amplifying apparatus intended for electric music instruments (primarily guitar), with switchable circuitry offering an improved, specialized circuit for the enhancement of solo playing in addition to customary simple amplification. In the lead (or solo) mode of operation, the circuit will synthesize particular sustain and distortion characteristics and add them to the tone of the instrument (guitar, electric piano, microphone, etc.) to produce a more flexible and expressive sound for solo playing than the sound of the instrument normally amplified. Switching and control circuitry enable the musician to return to a conventional amplified tone which would be preferred for rhythm (or chordal) playing.

    摘要翻译: 一种用于电子乐器(主要是吉他)的电子放大装置,具有可切换电路,除了通常的简单放大之外,还提供改进的专用电路,用于增强独奏演奏。 在引导(或独奏)操作模式下,电路将合成特定的维持和失真特性,并将其添加到仪器的音调(吉他,电钢琴,麦克风等),以产生更灵活和表现力的声音,用于独奏 播放比正常放大的乐器的声音。 切换和控制电路使音乐家能够返回常规的放大音调,这对于节奏(或弦乐)的播放而言是优选的。