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

Device and method for echo cancellation, and computer-readable storage medium

An echo cancellation and echo technology, which is applied in speech analysis, signal processing, instruments, etc., can solve the problem that the echo cancellation technology cannot realize voice interaction

Inactive Publication Date: 2018-07-24
BEIJING BAIDU NETCOM SCI & TECH CO LTD
View PDF5 Cites 49 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the performance of the existing echo cancellation technology cannot achieve good voice interaction in many occasions

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
  • Device and method for echo cancellation, and computer-readable storage medium
  • Device and method for echo cancellation, and computer-readable storage medium
  • Device and method for echo cancellation, and computer-readable storage medium

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0016] The principle and spirit of the present disclosure will be described below with reference to several exemplary embodiments shown in the accompanying drawings. It should be understood that these specific embodiments are described only to enable those skilled in the art to better understand and realize the present disclosure, rather than to limit the scope of the present disclosure in any way.

[0017] As mentioned above, echo cancellation technology is one of the key technologies for voice interaction. How to better improve the performance of echo cancellation so as to enhance the experience of voice interaction is one of the topics of current voice recognition related technologies. There are mainly two existing technical solutions for echo cancellation. One is a pure software echo cancellation algorithm, which is mainly used in call software applications. The other is to implement echo cancellation by combining hardware extraction of reference signals with software ec...

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 provides a method and device for echo cancellation, and a computer-readable storage medium. The device comprises a loudspeaker, which is configured to play an acousticsignal corresponding to an analog audio signal; the device further comprises a microphone, which is configured to convert a received mixed acoustic signal into a mixed audio signal; the mixed acousticsignal includes echo of the played acoustic signal and an acoustic signal from a user; the device further comprises an analog-to-digital converter, which is configured to convert the analog audio signal into a digital signal served as an echo reference signal; and the device further comprises an echo canceller, which is configured to cancel the echo component in the mixed audio signal by utilization of the echo reference signal, so that the audio signal of the user corresponding to the acoustic signal from the user is obtained. By means of the embodiment of the invention, the echo cancellation performance can be improved; and furthermore, the voice interaction experience can be improved.

Description

technical field [0001] Embodiments of the present disclosure relate generally to voice interaction, and more particularly to a method, device and computer-readable storage medium for echo cancellation. Background technique [0002] In recent years, with the rapid development of voice technology and the rapid popularization of intelligent voice hardware devices, users' demand for voice interaction is increasing. In voice interaction, keyword wake-up and voice interruption functions are the key to realizing voice interaction, and the realization of these functions requires the use of echo cancellation technology. Generally speaking, echo refers to the sound emitted by the voice interaction device itself. For example, when a smart speaker is playing music, the user can interrupt it to perform voice control operations. At this time, the microphone array of the smart speaker actually collects the music being played and the sound from the user. Without echo cancellation, a smart...

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): H04R3/04
CPCH04R3/04H04R2430/00G10L2021/02166G10L2021/02082G10L21/0208G10L21/0232H04R1/326
Inventor 耿雷
Owner BEIJING BAIDU NETCOM SCI & TECH CO LTD