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Adjustable filtering frequency audio processing system based on buck-mode constant current

A constant current and audio processing technology, applied in electrical components, transducer circuits, sensors, etc., can solve the problems of unstable current and poor filtering effect, achieve the effect of stabilizing the audio processing system and improving the playback quality

Inactive Publication Date: 2015-09-30
CHENGDU JIESHENG TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the defects of poor filtering effect and unstable voltage and current in the current audio processing system, and provide an adjustable filter frequency audio processing system based on step-down constant current

Method used

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  • Adjustable filtering frequency audio processing system based on buck-mode constant current
  • Adjustable filtering frequency audio processing system based on buck-mode constant current

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Embodiment

[0020] Such as figure 1 As shown, the present invention consists of an audio acquisition module, a frequency selection circuit connected to the audio acquisition module, a micro processing circuit connected to the frequency selection circuit, an amplifier circuit and an adjustable filter circuit connected to the micro processing circuit. The linear drive circuit between the micro-processing circuit and the frequency selection circuit, and the step-down constant current circuit connected in series between the frequency selection circuit and the adjustable filter circuit.

[0021] Among them, the step-down constant current circuit consists of a step-down chip U2, transistor VT8, transistor VT9, operational amplifier T4, resistor R22, resistor R23, resistor R24, resistor R25, resistor R26, resistor R27, resistor R28, resistor R29, resistor R30, resistor R31, capacitor C15, capacitor C16, capacitor C17, capacitor C18, capacitor C19, diode D3, and diode D4 are composed.

[0022] When co...

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PUM

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Abstract

The invention discloses a filter-frequency-adjustable audio processing system based on linear driving. The system is mainly composed of an audio acquisition module, a frequency selecting circuit, a microprocessing circuit, an amplifying circuit and an adjustable filter circuit, wherein the frequency selecting circuit is connected with the audio acquisition module, the microprocessing circuit is connected with the frequency selecting circuit, and the amplifying circuit and the adjustable filter circuit are both connected with the microprocessing circuit. The system is characterized in that a linear driving circuit is further arranged between the microprocessing circuit and the frequency selecting circuit; the linear driving circuit is composed of a driving chip U, a triode VT4, a triode VT5, a triode VT6, a triode VT7 and the like. The linear driving circuit can make the audio processing system more stable.

Description

Technical field [0001] The invention relates to an electronic system, in particular to an audio processing system with adjustable filter frequency based on a step-down constant current. Background technique [0002] As people pursue higher and higher quality of life, now home theaters have basically entered every household, bringing great joy to people's lives. However, when people watch movies, noises often appear due to the unstable voltage and current of their players, which affects the quality of movie playback. Summary of the invention [0003] The purpose of the present invention is to overcome the defects of poor filtering effect and unstable voltage and current of the current audio processing system, and to provide an audio processing system with adjustable filter frequency based on a step-down constant current. [0004] The purpose of the present invention is achieved with the following technical solutions: a step-down constant current-based adjustable filter frequency aud...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04R3/00
Inventor 雷明方
Owner CHENGDU JIESHENG TECH CO LTD
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