| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 81 | Multi-stage solid state amplifier that emulates tube distortion | EP95300062.7 | 1995-01-06 | EP0662752A2 | 1995-07-12 | Sondermeyer, Jack C.; Brown, Sr., James W. |
A multi-stage solid state amplifier (110) emulates the distortion associated with grid current flow in a multi-stage tube amplifier (10) by means of a clipping device (162, 164, 166) in the circuit between each series connected stage (112, 114, 116, 118). In a particular embodiment, each stage (112, 114, 116, 118) includes a field effect transistor (FET) (112, 114, 116, 118) and the clipping device (162, 164, 166) is a diode (162, 164, 166). In another embodiment, each stage (112, 114, 116, 118) includes a Darlington connected pair of transistors (312A, 312B, 314A ... 318B). An input diode (374) and a multilevel biasing circuit (380) emulates a tube circuit input. |
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| 82 | EMULATED GUITAR LOUDSPEAKER | EP86904633.4 | 1986-07-02 | EP0321455B1 | 1992-12-16 | PITTMAN, R., Aspen; BUCK, Marshall, D. |
| Circuitry for simulating and emulating the sounds of a loudspeaker driven by a classic rock and roll guitar amplifier in the form of an electrical signal which, when input to a recording console or used to drive high fidelity headphones or a high quality monitor amplifier and monitor loudspeaker, accurately reproduces such sounds. The circuitry is incorporated at the output of a classic tube-type rock and roll guitar amplifier, and consists of three basic modules: a load impedance module (Fig. 3) designed to offer to the tube amplifier output a load impedance as a function of frequency (Fig. 1) which is modeled after and nearly identical (in both real and imaginary components) to the impedance of a classic rock and roll guitar speaker; a highpass filter circuit (24) which emulates the low frequency resonance and rolloff characteristics (Fig. 7) of a classic rock and roll open-back guitar speaker cabinet; and further filtering circuits (26, 30, 32, 34, 36, 40) which emulate the mid and high frequency characteristics (Fig. 7) of a classic rock and roll guitar loudspeaker. Electrical outputs (50) are provided for driving a recording mixer, headphones, a speaker, and an external power amplifier. | ||||||
| 83 | EMULATED GUITAR LOUDSPEAKER. | EP86904633 | 1986-07-02 | EP0321455A4 | 1989-08-09 | PITTMAN R ASPEN; BUCK MARSHALL D |
| Circuitry for simulating and emulating the sounds of a loudspeaker driven by a classic rock and roll guitar amplifier in the form of an electrical signal which, when input to a recording console or used to drive high fidelity headphones or a high quality monitor amplifier and monitor loudspeaker, accurately reproduces such sounds. The circuitry is incorporated at the output of a classic tube-type rock and roll guitar amplifier, and consists of three basic modules: a load impedance module (Fig. 3) designed to offer to the tube amplifier output a load impedance as a function of frequency (Fig. 1) which is modeled after and nearly identical (in both real and imaginary components) to the impedance of a classic rock and roll guitar speaker; a highpass filter circuit (24) which emulates the low frequency resonance and rolloff characteristics (Fig. 7) of a classic rock and roll open-back guitar speaker cabinet; and further filtering circuits (26, 30, 32, 34, 36, 40) which emulate the mid and high frequency characteristics (Fig. 7) of a classic rock and roll guitar loudspeaker. Electrical outputs (50) are provided for driving a recording mixer, headphones, a speaker, and an external power amplifier. | ||||||
| 84 | EMULATED GUITAR LOUDSPEAKER | EP86904633.0 | 1986-07-02 | EP0321455A1 | 1989-06-28 | PITTMAN, R., Aspen; BUCK, Marshall, D. |
| Des circuits sont prévus pour simuler et émuler les sons d'un haut-parleur attaqué par un amplificateur classique de guitare de rock and roll sous la forme d'un signal électrique qui, lorsqu'il est introduit dans un pupitre d'enregistrement ou utilisé pour attaquer un casque haute fidélité ou bien un amplificateur de contrôle de haute qualité et un haut-parleur de contrôle, reproduit ces sons avec précision. Les circuits sont incorporés à la sortie d'un amplificateur classique du type à tubes pour guitare de rock and roll et comportent trois modules de base: un module à impédance de charge (Fig. 3) destiné à offrir à la sortie de l'amplificateur à tubes une impédance de charge en fonction de la fréquence (Fig. 1), qui est modelé d'après l'impédance d'un haut-parleur classique pour guitare de rock and roll et pratiquement identique à celle-ci (aussi bien en composantes réelles qu'imaginaires); un circuit de filtre passe-haut (24) qui émule les caractéristiques de résonance et d'augmentation d'amortissement à basse fréquence (Fig. 7) d'une enceinte classique à fond ouvert pour guitare de rock and roll; et d'autres circuits de filtrage (26, 30, 32, 34, 36, 40) qui émulent les caractéristiques de haute et moyenne fréquence (Fig. 7) d'un haut-parleur classique pour guitare de rock and roll. Des sorties électriques (50) sont prévues pour attaquer un mélangeur d'enregistrement, un casque, un haut-parleur, et un amplificateur de puissance externe. | ||||||
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