Positioning method based on recording device of mobile phone

A technology of recording device and positioning method, which is applied in positioning, measuring device, telephone structure, etc., can solve the problem of high efficiency and precise positioning without sound source, and achieve the effect of high efficiency and precise positioning

Active Publication Date: 2014-03-12
NANJING XINDA METEOROLOGICAL EQUIP
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Problems solved by technology

[0004] Recent technological developments have driven the development of mobile phones. For example, the general signal processing technology using beam-forming has tapped the localization ability of two or more different locations of the mobile phone, but the existing technology does not have the location of the sound source. Method for performing efficient and precise positioning

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  • Positioning method based on recording device of mobile phone
  • Positioning method based on recording device of mobile phone
  • Positioning method based on recording device of mobile phone

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Embodiment Construction

[0024] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and through specific implementation methods. It should be understood that the specific embodiments described here are only used to explain the present invention, but not to limit the present invention. In addition, it should be noted that, for the convenience of description, only parts related to the present invention are shown in the drawings but not all content.

[0025] figure 1 It is a schematic diagram of the positioning method of the recording device based on the mobile phone according to the embodiment of the present invention. Such as figure 1 As shown, the embodiment of the present invention provides a method for locating a sound source by a recording device of a mobile phone, and the recording device includes at least three microphones, respectively located at positions M 1 The first microphone of , in position M 2 the second micro...

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Abstract

The invention discloses a positioning method based on a recording device of a mobile phone. The recording device comprises at least three microphones, namely a first microphone, a second microphone and a third microphone. The positioning method includes the following steps of measurement, time difference acquisition and sound source position calculation. The time difference acquisition step includes acquiring a time difference of a sound source to serve as a first time difference by acquiring the first microphone and the third microphone, and acquiring a time difference of the sound source to serve as a second time difference by acquiring the second microphone and the third microphone. The sound source position calculation step includes acquiring distance between the sound source and the first microphone, acquiring distance between the sound source and the second microphone, and then utilizing a Heron's formula to calculate so as to determine the position of the sound source. More convenient, efficient and accurate positioning can be realized by using the microphones of the recording device of the mobile phone via the time difference acquisition step and the sound source position calculation step.

Description

technical field [0001] The invention relates to the technical field of mobile phones, in particular to a positioning method for a recording device based on a mobile phone. Background technique [0002] The reason why the human ear can distinguish the position of the sound is because there is an angle difference between the sound source and the two ears. This angle difference causes a time difference for the sound to reach the left and right ears. Therefore, the human ear can capture this time difference and locate it. The location of the sound source. At the same time, the intensity of the sound reaching the two ears is also different, which is also an important source for determining the location of the sound source. Through time difference and intensity difference, people can know the location of the sound source accurately, and the same principle is also applicable to mobile phones. [0003] Mobile phones have gradually become mobile tools with powerful computing capabi...

Claims

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Application Information

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IPC IPC(8): H04M1/725H04M1/02G01S5/22
Inventor 朱彤马强张善丰刘云浩刘红
Owner NANJING XINDA METEOROLOGICAL EQUIP
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