Dynamic sensing regulator

• US 6,759,901 B2
• Filed: 11/21/2002
• Issued: 07/06/2004
• Est. Priority Date: 11/21/2002
• Status: Expired due to Fees

• Current Assignee: AXL Musical Instruments Co Ltd.
• Original Assignee: Vht Amplification, Inc.
• Inventors: Fryette, Steven M
• Primary Examiner(s): NGUYEN, PATRICIA T
• Application Number:
  US10/301,016
• Publication Number:
  US 20040100324A1
• Time in Patent Office: 593 Days
• Field of Search: 330/127, 330/123
• US Class Current: 330/127
• CPC Class Codes: G10H 3/186 Means for processing the signal picked up from the strings filtering G10H1/12
• CPC Class Codes: H03G 3/004 Control by varying the supply voltage

Abstract

A dynamic sensor regulator that provides a mechanism for introducing desirable tonal artifacts in component-based guitar amplifier systems by inducing voltage fluctuations into the power supply of a preamplifier. The dynamic sensor regulator comprises a regulator circuit, connected to an amplifier that is connected to a converter circuit that is connected to a variable control circuit. The amplifier includes a floating bias circuit that dynamically adjusts the bias state of an output driving amplifier in response to signal fluctuations of the regulator output signal. A transformer is connected to the amplifier output and once the transformer'"'"'s saturation point has been reached, the saturation of the transformer increases proportionally with the amplifier'"'"'s input signal while the regulated output signal remains constant, emulating amplifier overload and saturation.

Claims

1. A power supply control circuit in a preamplifier component, comprising:

a power supply for producing a power signal;

a regulator circuit for receiving the power signal and a regulator control signal, and for producing a regulated output signal;

an amplifier circuit operating with the regulated output signal and receiving an input signal, the amplifier circuit outputting an amplifier output signal;

a converter circuit for receiving the amplifier output signal and converting the amplifier output signal to a control voltage, converter circuit includes a buffer that isolates the control voltage from the amplifier output signal; and

a variable control circuit for receiving the control voltage, and varying the control voltage to output the regulated control signal to the regulator circuit;

wherein a signal fluctuation is induced in the regulated output signal in response to a corresponding signal fluctuation of the input signal.

2. The circuit of claim 1, wherein the regulated output voltage is controlled with the control voltage, which is a DC control voltage.

3. The circuit of claim 2, wherein the DC control voltage is derived from the input signals, which input signal is an audio signal.

4. The circuit of claim 1, wherein the control voltage is stored in the variable control circuit, which is an R/C network.

5. The circuit of claim 4, wherein the R/C network allows an operator to vary signal amplitude and signal frequency at which the control voltage acts upon the regulator circuit.

6. The circuit of claim 1, wherein a small signal fluctuation in the input signal causes a corresponding small signal fluctuation in the regulated output signal.

7. The circuit of claim 1, wherein a large signal fluctuation in the input signal causes a corresponding large signal fluctuation in the regulated output signal.

8. The circuit of claim 1, wherein the amplifier circuit includes a floating bias circuit that adjusts dynamically the bias state of an output driving amplifier of the amplifier circuit in response to the signal fluctuation of the regulated output signal.

9. The circuit of claim 1, wherein the amplifier circuit includes a floating bias circuit that adjusts current flow through an output driving amplifier of the amplifier circuit causing clipping of the amplifier output signal, thereby inducing random distortion artifacts in the amplifier output signal.

10. The circuit of claim 1, wherein the amplifier circuit includes an energy conversion element operatively connected to output the amplifier output signal, which amplifier output signal increases in amplitude in direct proportion to the amplitude of the input signal until a saturation point of the energy conversion element is reached.

11. The circuit of claim 10, wherein the energy conversion element is an audio transformer such that after the saturation point of the audio tansformer is reached, further saturation of the audio transformer increases proportionally with the input signal while the regulated output signal remains substantially constant, causing emulation of power amplifier saturation and overload that produce the desired artifacts.

12. A method of controlling a power supply in a preamplifier component, comprising the steps of:

regulating a power signal with a regulator circuit, the regulator circuit receiving a regulator control signal and producing a regulated output signal;

operating an amplifier circuit with the regulated output signal, the amplifier circuit receiving an input signal and outputting an amplifier output signal;

converting the amplifier output signal to a control voltage with a converter, the converter receiving the amplifier output signal and isolating the control voltage from the amplifier output signal with a buffer; and

varying the cool voltage with a variable control circuit, the variable control circuit receiving the control voltage and varying the control voltage to output the regulated control signal to the regulator circuit;

wherein a signal fluctuation in the input signal causes a corresponding signal fluctuation to be induced in the amplifier output signal.

13. The method of claim 12, wherein the regulated output voltage in the step of regulating is controlled with the control voltage, which is a DC control voltage.

14. The method of claim 13, wherein the DC control voltage is derived from an audio signal, which audio signal is the input signal.

15. The method of claim 12, wherein the control voltage in the step of converting is stored in the variable control circuit, which is an R/C network.

16. The method of claim 15, wherein the R/C network allows an operator to vary signal amplitude and signal frequency at which the control voltage acts upon the regulator circuit.

17. The method of claim 12, wherein a small signal fluctuation in the input signal in the step of operating causes a corresponding small signal fluctuation in the regulated output signal.

18. The method of claim 12, wherein a large signal fluctuation in the input signal in the step of operating causes a corresponding large signal fluctuation in the regulated output signal.

19. The method of claim 12, wherein the amplifier circuit in the step of operating includes a floating bias circuit that adjusts dynamically the bias state of an output driving amplifier of the amplifier circuit in response to the voltage fluctuation of the regulated output signal.

20. The method of claim 12, wherein the amplifier circuit in the step of operating includes a floating bias circuit that adjusts current flow through an output driving amplifier of the amplifier circuit causing clipping of the amplifier output signal, thereby inducing random distortion artifacts in the amplifier output signal.

21. The method of claim 12, wherein the amplifier circuit in the step of operating includes an energy conversion element operatively connected to output the amplifier output signal, which amplifier output signal increases in amplitude in direct proportion to the amplitude of the input signal until a saturation point of the energy conversion element is reached.

22. The method of claim 21, wherein the energy conversion element is an audio transformer such that after the saturation point of the audio transformer is reached, further saturation of the audio transformer increases proportionally with the input signal while the regulated output signal remains substantially constant, causing emulation of power amplifier saturation and overload that produce the desired artifacts.