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Speaker control method and speaker control system

A control method and control system technology, applied in the field of speaker control method and speaker control system, capable of solving problems such as power waste, popping sound, and user distress

Inactive Publication Date: 2013-09-11
WISTRON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In other words, the speakers consume some power even when they are idle, wasting power
In addition, if the speaker is still working when it is idle, when a connector is plugged into the audio input, it will produce pop noise, causing trouble to the user

Method used

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  • Speaker control method and speaker control system
  • Speaker control method and speaker control system

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Embodiment Construction

[0025] see figure 1 , figure 1 It is a functional block diagram of the speaker control system 1 according to an embodiment of the present invention. like figure 1 As shown, the speaker control system 1 includes a speaker 10, an audio amplifier 12, an audio digital-to-analog converter 14, a processor 16 and a delay circuit 18, wherein the audio amplifier 12 is electrically connected to the speaker 10, and the audio digital-to-analog conversion The device 14 is electrically connected to the audio amplifier 12 , the processor 16 is electrically connected to the audio amplifier 12 through the delay circuit 18 and is electrically connected to the audio digital-to-analog converter 14 . The audio DAC 14 is used to convert the digital audio signal into an analog audio signal, and the audio amplifier 12 is used to amplify the analog audio signal and drive the speaker 10 . In practical applications, the delay circuit 18 can be an RC circuit composed of resistors and capacitors and ca...

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PUM

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Abstract

The invention provides a speaker control method and a speaker control system. A speaker control method includes steps of detecting whether there is any audio signal input; outputting a first voltage signal if there is no audio signal input; outputting a second voltage signal if there is an audio signal input; and selectively turning off an audio amplifier according to the first voltage signal or turning on the audio amplifier according to the second voltage signal, wherein the audio amplifier is used for driving a speaker.

Description

technical field [0001] The invention relates to a loudspeaker control method and a loudspeaker control system, in particular to a loudspeaker control method and a loudspeaker control system capable of turning off an audio amplifier when the loudspeaker is idle to achieve energy-saving effects. Background technique [0002] Currently, most electronic devices are equipped with speakers to play audio signals. Speakers usually require an audio digital-to-analog converter (audio DAC) and an audio amplifier (audio amplifier) ​​to operate. The audio digital-to-analog converter is used to convert digital audio signals into analog audio signals, and the audio amplifier is used to amplify the analog audio signals and drive speakers. Generally speaking, the speaker will still be driven by the audio amplifier to be in the working state when it is idle. In other words, the speaker still consumes some power even when it is idle, resulting in wasted power. In addition, if the speaker is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04R3/02
CPCH04R3/02
Inventor 李全福谢发宇刘伟伦
Owner WISTRON CORP