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Signal processing system and method

A signal processing and input signal technology, applied in electrical components, amplifiers, components of amplifying devices, etc., can solve problems such as power supply instability

Inactive Publication Date: 2019-02-26
LYRA SEMICON INC
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because the load change occurs earlier than the power supply adjustment, it is possible that the power supply may become unstable when the load changes greatly.

Method used

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Embodiment Construction

[0060] figure 1 It is a schematic diagram of the system, which is used to illustrate the system architecture and operation of the signal processing system of the present invention. Such as figure 1 As shown in , the signal processing system 1 at least includes a volume meter (VU Meter, Volume Unit Meter) module 2 and a power generation circuit 3 .

[0061] The volume meter module 2, the volume meter module 2 detects the volume change of the input signal left sound L-in and the input signal right sound R-in, and uses the detection result as the expected value Vi of the power generation circuit 3 .

[0062] The power generation circuit 3 is a negative feedback power supply circuit. The input terminal of the power generation circuit 3 accepts the expected value Vi from the output terminal of the volume meter module 2, and will add a voltage offset Voffset, and a voltage generated from the power supply. The feedback voltage Vo at the output terminal of the circuit 3 is used for ...

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Abstract

The invention discloses a signal processing system and method. The system and method are applied to an environment for providing output voltage for class-H drivers. When the signal processing system is applied to the signal processing method, firstly, the volume change of sound input is detected, the detection result of the volume change is regarded as an expectation value of a power generating circuit, and voltage offset amount is added to the input end of the power generating circuit of a negative feedback power circuit except the expectation value so that the output voltage, provided for the class-H drivers, by the output end of a power generator can be higher than a fixed amount. By means of the signal processing system and method, the amplitude of signals of the output voltage of supply voltage provided for the class-H drivers can be automatically and quickly adjusted according to the detected volume change of sound input and through the negative feedback mode such as using of a negative feedback closed loop, voltage offset, and a proportion integral differential (PID) controller.

Description

technical field [0001] The present invention relates to a signal processing system and method, more specifically, to a signal processing system and method used in an environment that provides voltage to a Class-H (Class-H) driver. The volume of the sound input changes, and the negative feedback form is used to automatically and quickly adjust the output voltage signal size of the power supply voltage used by the Class-H driver (driver), and the demand information can be obtained before the load demand . Background technique [0002] In the current sound driver technology, the power supply voltage used by the traditional Class-AB (CLASS-AB) driver is fixed, so the efficiency is extremely poor at low power output, and the power supply of the improved Class-G (CLASS-G) driver The number of segments is limited, so the efficiency will be better than the AB type drive, however, it still cannot reach the optimal situation. [0003] The power supply of Class H (CLASS-H) driver aut...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03F1/02
CPCH03F1/0227
Inventor 苏明堂
Owner LYRA SEMICON INC
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