Unlock instant, AI-driven research and patent intelligence for your innovation.

Beam forming method and device and electronic equipment

A beamforming and sub-band technology, applied in the field of sound processing, can solve problems such as time-consuming, inability to eliminate environmental noise, and sound signal distortion, and achieve the effect of saving time

Inactive Publication Date: 2018-09-18
MOBVOI INFORMATION TECH CO LTD
View PDF6 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the process of researching the beamforming microphone, the inventor found that by fusing the time-domain filter and the calculation of the beamforming driving weight in the frequency domain, the calculation results take a long time and have poor real-time performance; When calculating and analyzing, and cannot eliminate unwanted environmental noise, it will cause distortion of the fixed pointing sound signal

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Beam forming method and device and electronic equipment
  • Beam forming method and device and electronic equipment
  • Beam forming method and device and electronic equipment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0069] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided for more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0070] An embodiment of the present invention provides a beamforming method, such as figure 1 As shown, the method includes:

[0071] 101. Acquire spatial filtering parameters, where the spatial filtering parameters vary with angles and subband frequencies.

[0072] In the embodiment of the present invention, the purpose is to enhance the beamforming of fixed directional beams, to ensure that the sound in the directional direction...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The embodiment of the invention discloses a beam forming method and device and electronic equipment, relates to the technical field of sound processing, and mainly aims at shortening the beam formingtime and achieving the purpose that sound signals in the fixed direction are undistorted. The main technical scheme comprises the steps that a space filtering parameter is acquired, wherein the spacefiltering parameter is different along with different angles and sub-band frequencies; the sound source direction corresponding to the space filtering parameter is determined, and an original frequency domain signal corresponding to the sound source direction is acquired; and the product of the space filtering parameter and the original frequency domain signal is calculated, and the product is used for conducting beam forming in the mode of generating suppression on other frequency domain signals except the original frequency domain signal in the sound source direction.

Description

technical field [0001] Embodiments of the present invention relate to the technical field of sound processing, and in particular, to a beamforming method, device, and electronic equipment. Background technique [0002] With the rapid popularization of smart terminal technology, users have higher and higher requirements for the functions and intelligence of smart terminals. How to make smart terminals more intelligent and professional has become one of the current research directions. [0003] For example: basically all smart terminals are equipped with recording functions as standard, and most of the recording functions will use beamforming (Beamforming), which is a signal processing technology for sensor arrays (such as microphone arrays) for directional signals Receive and perform appropriate signal processing on received sound signals. Beamforming allows microphone assemblies to receive acoustic signals in order to selectively process electrical signals, for example, pro...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): H04R3/00
Inventor 周舒然李志飞
Owner MOBVOI INFORMATION TECH CO LTD