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Remote conference control method and device based on howling sound automatic recognition

A remote conference and automatic identification technology, applied in video conference systems, voice analysis, instruments, etc., can solve problems such as the inability to fundamentally eliminate the influence of the whistling sound process, so as to improve the user experience, eliminate the influence, and ensure the quality of the call. Effect

Active Publication Date: 2019-04-05
北京安信智通科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problem that the prior art cannot fundamentally eliminate the influence of howling sounds on the progress of audio and video conferences, the present invention provides a remote conference control method and device based on automatic recognition of howling sounds

Method used

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  • Remote conference control method and device based on howling sound automatic recognition
  • Remote conference control method and device based on howling sound automatic recognition
  • Remote conference control method and device based on howling sound automatic recognition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] figure 1 It is a flow chart of the remote conference control method based on howling sound automatic recognition in embodiment one; this remote conference control method based on howling sound automatic recognition includes:

[0050] Step 101, the terminal collects the sound input signal;

[0051] Step 102, extracting the time-domain envelope signal of the above-mentioned sound input signal and calculating the energy proportion of the above-mentioned sound input signal in the frequency band above the preset frequency;

[0052] In step 103, the terminal performs a mute operation when it determines that the time-domain envelope signal is periodic and the energy proportion is greater than or equal to a predetermined threshold.

[0053] The method also includes encoding the voice input signal by the terminal and sending it to the server when the time-domain envelope signal has no periodicity or the energy ratio is smaller than a predetermined threshold.

[0054] In step 102...

Embodiment 2

[0067] image 3 It is a structural diagram of a remote conference control device based on howling sound automatic recognition in Embodiment 2; this device is applied to a terminal, and includes: an acquisition module, a time-domain envelope signal extraction module, a calculation module, a judgment module, and a control module.

[0068] The collection module is used to collect sound input signals;

[0069] The time-domain envelope signal extraction module is used to extract the time-domain envelope signal of the above-mentioned sound input signal;

[0070] The calculation module is used to calculate the energy proportion of the sound input signal in the frequency band above the preset frequency;

[0071] The judging module is used to judge whether the time-domain envelope signal has a cycle and whether the energy ratio is greater than or equal to a predetermined threshold;

[0072] The control module is configured to perform a mute operation on the terminal when the judging ...

Embodiment 3

[0077] Figure 4 It is the flow chart of the teleconference control method based on howling tone automatic identification in embodiment three; This method comprises:

[0078] In step 401, the server receives an audio input signal sent by at least one terminal of a call party in a teleconference.

[0079] Step 402, perform the howling sound recognition process on all the terminals in the above-mentioned calling party, and perform the howling sound recognition process on each terminal, including: extracting the time domain envelope signal of the sound input signal of the terminal and calculating the sound input signal at a preset The energy proportion of the frequency band above the frequency, when the time-domain envelope signal is periodic and the energy proportion is greater than or equal to a predetermined threshold, it is determined that there is a howling sound in the sound input signal of the terminal; otherwise, it is determined that the sound of the terminal There is n...

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Abstract

The invention discloses a remote conference control method and device based on automatic recognition of howling sound. The method comprises the steps that a terminal collects a sound input signal; the terminal extracts a time domain envelope signal of the sound input signal and calculates the energy proportion of a frequency band above preset frequency of the sound input signal; and the terminal executes a mute operation when determining that the time domain envelope signal has periodicity and that the energy proportion is larger than or equal to a preset threshold. According to the invention, the influence of howling sound to the process of an audio and video conference can be fundamentally eliminated to guarantee the call quality of the audio and video conference and improve the user experience.

Description

technical field [0001] The invention relates to a noise elimination technology in the voice communication field, in particular to a noise elimination technology for audio signals at a sending end, which can be applied to the fields of one-to-single audio calls and multi-party audio calls. Background technique [0002] When people use the microphone and the loudspeaker at the same time, such as when performing in a theater, meeting in a conference hall, or singing in karaoke, they often encounter the phenomenon of howling. When howling occurs, the loudspeaker will emit a piercing scream. , which will seriously affect the user experience. [0003] With the expansion of mobile Internet coverage, people are becoming more and more accustomed to using mobile terminals to accomplish things that previously required the use of fixed equipment, such as using mobile phones as conference terminals to participate in remote conferences. The phenomenon of howling is easy to appear, and on...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N7/15H04R3/02G10L25/18G10L25/21G10L25/51H04L29/06
CPCG10L25/18G10L25/21G10L25/51H04L65/403H04N7/152H04N7/155H04R3/02
Inventor 江周平徐家骏代金良
Owner 北京安信智通科技有限公司
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