Amplitude adjustment method and sound production device

A sounding device and amplitude adjustment technology, applied in measuring devices, instruments, measuring electrical variables, etc., can solve problems such as loudspeaker noise

Active Publication Date: 2019-01-25
VIVO MOBILE COMM CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Embodiments of the present invention provide an amplitude adjustment me...

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  • Amplitude adjustment method and sound production device
  • Amplitude adjustment method and sound production device
  • Amplitude adjustment method and sound production device

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Embodiment Construction

[0014] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0015] refer to figure 1 , shows a flow chart of steps of an amplitude adjustment method according to Embodiment 1 of the present invention.

[0016] The amplitude adjustment method provided by the embodiment of the present invention includes the following steps:

[0017] Step 101: The digital signal processor detects the current and voltage of the detection device in real time, and calculates the impedance value of the detection device based on the c...

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Abstract

The embodiment of the invention provides an amplitude adjustment method and a sound production device. The sound production device comprises a horn and a digital signal processor, wherein the horn comprises a detection device. The method is characterized by comprising the steps of detecting a current and a voltage of the detection device in real time by the digital signal processor, and calculating a resistance value of the detection device according to the current and the voltage; comparing the resistance value with a preset resistance value to obtain a comparison result; and adjusting a current output value and a voltage output value of the horn according to the comparison result. By the method, the resistance value of the detection device can be detected in real time; and by comparing the resistance value of the detection device with the preset resistance value and adjusting the current output value and the voltage output value of the horn, the amplitude of the horn is controlled not to exceed maximum amplitude, so that noise is prevented.

Description

technical field [0001] The present invention relates to the technical field of terminal equipment, in particular to an amplitude adjustment method and a sound generating device. Background technique [0002] At present, with the popularization of mobile terminals, people use them more and more frequently in various occasions and places. Due to some physical characteristics of electronic devices, they are easily affected by the environment, so that the performance of the whole machine is affected to a certain extent. The impact, especially in some relatively harsh environments, such as low or high pressure, low or high temperature, dry or humid environments, etc., will have a relatively large impact on the overall parameters of the electroacoustic device. [0003] The current control method for the sound generating device is to use the smart power amplifier to model the speaker, and control the maximum voltage and current used at different frequencies according to the standar...

Claims

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Application Information

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IPC IPC(8): G01R27/08
CPCG01R27/08
Inventor 陆阿楠
Owner VIVO MOBILE COMM CO LTD
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