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Method and device for directional recording

A technology of recording files and fixed sound sources, applied in speech analysis, instruments, etc., can solve the problem of lack of pertinence in recording methods, and achieve the effect of improving user experience

Active Publication Date: 2019-09-24
GUANGDONG OPPO MOBILE TELECOMM CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the embodiments of the present invention is to provide a method and device for directional recording to solve the problem of lack of pertinence in existing recording methods

Method used

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  • Method and device for directional recording
  • Method and device for directional recording

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] figure 1 It is a schematic flowchart of a method for directional recording provided in Embodiment 1 of the present invention. The method can be executed by a device for directional recording, wherein the device can be implemented by software and / or hardware, and can generally be integrated into a mobile terminal. like figure 1 As shown, the method includes:

[0024] Step 101. Acquire recording signals of at least three microphones.

[0025] Exemplarily, the mobile terminal in this embodiment may specifically be terminal equipment such as a mobile phone, a tablet computer, and a recording pen. The mobile terminal is configured with at least three microphones.

[0026] Exemplarily, when the user operates the mobile terminal to start recording, all or part of the microphones in the mobile terminal can be automatically turned on (the number of turned on microphones is not less than three), and the turned-on microphones are controlled to record, and the turned-on micropho...

Embodiment 2

[0041] figure 2 It is a schematic flowchart of a method for directional recording provided by Embodiment 2 of the present invention. This embodiment is optimized based on the above-mentioned embodiment. In this embodiment, the step "according to the preset recording direction and at least three microphones The arrangement method determines the target recording signal in the recording signal" and is optimized as follows: respectively perform Fourier transform on the recording signal corresponding to each of the at least three microphones to obtain the corresponding spectral data; according to the preset recording direction and at least three microphones Determine the target spectrum data in the spectrum data in an arrangement manner; determine the target recording signal in the recording signal according to the target spectrum data.

[0042] Correspondingly, the method of this embodiment includes the following steps:

[0043] Step 201. Acquire recording signals of at least thre...

Embodiment 3

[0061] image 3 It is a schematic flowchart of a preferred directional recording method provided by Embodiment 3 of the present invention. This embodiment is described by taking three microphones configured in a mobile terminal as an example. Specifically, the method includes the following steps:

[0062] Step 301. Acquire recording signals of three microphones.

[0063] Exemplary, Figure 4 A schematic diagram of the arrangement of microphones in a mobile terminal provided by Embodiment 3 of the present invention, as shown in Figure 4 As shown, the mobile terminal is provided with three microphones, which are respectively marked as a, b, and c. For the convenience of description, it is assumed here that the three microphones form an isosceles triangle, and a is the apex of the isosceles triangle.

[0064] Step 302: Perform Fourier transform on the recording signal corresponding to each of the three microphones to obtain three sets of spectrum data.

[0065] Step 303: Dete...

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Abstract

An embodiment of the invention discloses a method and device for directional recording. The method includes: acquiring recording signals of at least three microphones; determining a target recording signal in the recording signals according to a preset recording direction and an arrangement mode of the microphones; processing the target recording signal, and generating a recording file. By adopting the technical scheme, the target recording signal is screened from the recording signals of the microphones according to the preset recording direction and the arrangement mode of the microphones, and corresponds to the preset recording direction, and the recording file can be generated by processing the target recording signal, so that directional recording in the preset recording direction is realized; when listening to the recording file generated, a user can clearly hear sound of a sound source in the preset recording direction, so that user experience is improved.

Description

technical field [0001] Embodiments of the present invention relate to the technical field of recording, and in particular, to a method and device for directional recording. Background technique [0002] In order to meet the recording needs of users in life and work, most mobile terminals, such as mobile phones, tablet computers, music players and professional recording pens, have recording functions. [0003] When the user uses the recording function of the mobile terminal, there are often voices of multiple people speaking and various environmental noises in the recording environment, so for the microphone used to realize the recording function, there are multiple sound sources around it, and the microphone will The sounds of these sound sources are all recorded to form recording files. However, what the user is interested in is often only the sound of the sound source in one direction. When listening to a recording file containing the sounds of all sound sources, the soun...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G10L21/028G10L21/0316G10L21/0216
Inventor 王英茂
Owner GUANGDONG OPPO MOBILE TELECOMM CORP LTD