A measuring device and method for capacitive sound

A technology for measuring devices and measuring methods, applied in measuring devices, measuring ultrasonic/sonic/infrasonic waves, instruments, etc., can solve the problems of subjective and environmental noise, inaccurate methods for measuring capacitive sound, etc., and improve measurement accuracy and the effect of efficiency

Active Publication Date: 2018-09-04
VIVO MOBILE COMM 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 provide a measuring device and method for capacitive sound, which solves the problem that the methods for measuring capacitive sound in the prior art are not accurate and are greatly affected by subjective and environmental noise.

Method used

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  • A measuring device and method for capacitive sound
  • A measuring device and method for capacitive sound
  • A measuring device and method for capacitive sound

Examples

Experimental program
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Effect test

no. 1 example

[0023] The first embodiment of the present invention provides a capacitive sound measuring device, which is applied to a terminal, and the capacitive vibration on the main board of the terminal generates the capacitive sound around the receiver of the terminal. The measuring device includes:

[0024] Plastic film 1, the plastic film 1 is covered on the receiver of the terminal; wherein, the capacitive vibration on the main board of the terminal drives the air in the plastic film to vibrate to generate vibration sound, and the vibration sound is the same as the capacitive sound.

[0025] The ceramic capacitor of the terminal has a piezoelectric effect due to the stacked structure. During a call, the voltage at both ends of the capacitor changes due to the large power draw, causing mechanical deformation of the capacitor, which drives the terminal motherboard to vibrate, and generates capacitance sound. The capacitive sound generated by the vibration of the main board of the term...

no. 2 example

[0036] like figure 2 As shown, the second embodiment of the present invention provides a measuring device for capacitive sound, which includes:

[0037] Plastic film 1, the plastic film 1 is covered on the receiver of the terminal; wherein, the capacitive vibration on the main board of the terminal drives the air in the plastic film to vibrate to generate vibration sound, and the vibration sound is the same as the capacitive sound.

[0038] The ceramic capacitor of the terminal has a piezoelectric effect due to the stacked structure. During a call, the voltage at both ends of the capacitor changes due to the large power draw, causing mechanical deformation of the capacitor, which drives the terminal motherboard to vibrate, and generates capacitance sound. The capacitive sound generated by the vibration of the main board of the terminal is concentrated around the receiver, so in the embodiment of the present invention, a plastic film is used to cover the receiver of the termin...

no. 3 example

[0055] Such as image 3 As shown, the third embodiment of the present invention provides a method for measuring capacitive sound, the measuring method is applied to the measuring device for capacitive sound as described above, and the measuring method includes:

[0056] Step 301 , collecting a vibration sound signal of a vibration sound generated by vibration of air in a plastic film driven by capacitive vibration on the main board of the terminal.

[0057] In this step, the ceramic capacitor of the terminal has a piezoelectric effect due to the laminated structure. During a call, the voltage at both ends of the capacitor changes due to the large power draw, causing mechanical deformation of the capacitor, which drives the terminal motherboard to vibrate, and generates capacitive sound. The capacitive sound generated by the vibration of the main board of the terminal is concentrated around the receiver, so in the embodiment of the present invention, a plastic film is used to c...

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PUM

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Abstract

The invention provides a device and a method of measuring a capacitive sound. The measuring device comprises a plastic thin film, a sound signal acquisition device, a signal amplifying device, a first processing device, and a second processing device, wherein the plastic thin film covers a receiver of a terminal; the sound signal acquisition device is sealed in the plastic thin film and is used for acquiring a vibration sound signal; the signal amplifying device is connected with the sound signal acquisition device; the signal amplifying device is used for amplifying the vibration sound signal to obtain a sound amplifying signal; the first processing device is connected with the signal amplifying device and is used for carrying out Fourier transform on the sound amplifying signal to obtain spectrum information of the vibration sound signal; and the second processing device is connected with the first processing device and is used for processing the spectrum information of the vibration sound signal to determine the loudness value of the vibration sound, and the loudness value of the vibration sound is the loudness value of the capacitive sound. Thus, the capacitive sound of the terminal can be measured simply, efficiently and accurately, and the measurement precision and the efficiency are improved.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to a measuring device and a measuring method for capacitive sound. Background technique [0002] With the development of mobile communication technology, the development of various technologies of mobile phones has been quite mature, and the performance requirements for various basic and additional functions are also getting higher and higher. Voice calls are the most basic functions of mobile phones, especially handset calls, which are widely used in people's daily life. They make and receive several calls almost every day. Consumers have very high requirements for voice quality. Currently, small-volume chip ceramic capacitors are generally used in mobile phones. Ceramic capacitors with a laminated structure have a piezoelectric effect. During the user’s call, the current on the battery path is very large, and the voltage on both ends of the capacitor on the path changes dur...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01H17/00
CPCG01H17/00
Inventor 李黎
Owner VIVO MOBILE COMM CO LTD
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