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System and method for reducing VOIP (voice over internet protocol) communication resource overhead

A communication resource and overhead technology, applied in speech analysis, speech recognition, instruments, etc., can solve the problems of reducing VOIP communication resource overhead, low adaptability, and low decision accuracy.

Active Publication Date: 2016-02-10
BEIJING UNIV OF POSTS & TELECOMM
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Problems solved by technology

[0008] Aiming at the shortcomings of existing VAD detection technology, low adaptability to environmental changes, and low judgment accuracy in complex environments, the present invention proposes a system and method for reducing VOIP communication resource overhead

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  • System and method for reducing VOIP (voice over internet protocol) communication resource overhead

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Embodiment Construction

[0095] The present invention will be further described in detail below with reference to the drawings and embodiments.

[0096] In the VOIP call system, VAD detection is performed before voice coding to remove non-voice fragments, avoid coding and transmission of silent data packets, and save calculation time and bandwidth. In the speech coding stage, the segment judged as non-speech frame by VAD may not be coded or coded less, thereby reducing communication bandwidth resources.

[0097] A system and method for reducing the cost of VOIP communication resources. The convolutional neural network system has the characteristics of simple structure, few training parameters and strong adaptability. It is applied to the VAD system. By training the convolutional neural network system, the convolutional neural network system As a two-dimensional arbiter, it reduces the misjudgment rate and miss-judgment rate of the VAD system, thereby reducing the VOIP communication resource overhead while ...

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Abstract

The invention discloses a system for reducing VOIP (voice over internet protocol) communication resource overhead, comprising an input layer, a convolution layer, a sampling sub-layer and an output layer, each layer being composed of a characteristic spectrum, each characteristic spectrum containing nerve cells; a method of using the system to reduce VOIP communication resource overhead includes specifically: 1, training a convolutional neural network; 2, initializing the convolutional neural network; 3, inputting voice to be measured into a VAD (voice activity detection) system; 4, extracting voice characteristic parameter MFCC and its first-order differential characteristic parameter from each frame in order; 5, composing the parameters of each frame into a one-dimensional characteristic map taken into the convolutional neural network system; 6, the convolutional neural network system outputting in order a result [x, y] of each frame of the voice to be detected, and the VAD system making judgment and recording the results. The system and method have the advantages that the convolutional neural network system is used in the VAD system for detecting, the misjudgment rate of the VAD system is reduced, calculation time and bandwidth are saved, and VOIP voice resource overhead can be reduced at the premise of ensuring communication quality.

Description

Technical field [0001] The invention belongs to the field of communication computers, and relates to a system and method for reducing VOIP communication resource overhead. Background technique [0002] VoIP (VoiceoverInternetProtocol), also known as VoiceoverIP, carries voice over IP; specifically, it digitizes the analog signal of voice (Voice) and converts it into IP data packets, which are transmitted in real time on the IP network in the form of DataPacket. [0003] With the rapid development and continuous improvement of IP network technology, IP-based networks are gradually replacing traditional voice switching networks. Using the IP network to transmit voice data, under the condition that the network bandwidth is fixed, improving the channel utilization rate can greatly improve the voice quality. [0004] In the prior art, voice activation detection (VoiceActivityDetection, VAD) technology is usually used to improve channel utilization; VAD technology suppresses silence when ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G10L25/24G10L25/30G10L25/84G10L15/06
CPCG10L15/063G10L25/24G10L25/30G10L25/84
Inventor 王珂孙瑞浩张鹤立李曦纪红
Owner BEIJING UNIV OF POSTS & TELECOMM
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