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Method for improving subjective quality of network audio

A network audio and subjective technology, applied in the field of network communication, can solve the problems of poor subjective experience of the receiver, and achieve the effect of avoiding the decline of transmission quality, improving subjective quality, and improving subjective experience

Inactive Publication Date: 2010-06-23
TCL CORPORATION
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  • Abstract
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  • Claims
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Problems solved by technology

[0004] The purpose of the present invention is to provide a method for improving the subjective quality of network audio, which aims to solve the defect of poor subjective experience of the receiver caused by the poor quality of network audio transmission in the prior art

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  • Method for improving subjective quality of network audio
  • Method for improving subjective quality of network audio

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Embodiment Construction

[0021] In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0022] Compared with the prior art, the main feature of the method for improving the subjective quality of network audio provided by the present invention is to add a pre-buffer mode and an active packet loss mode, so that the audio heard by the receiver in real time is relatively smooth and easy to understand.

[0023] The pre-buffer mode means that when the buffer is empty, a pre-buffer flag is set to enter the pre-buffer mode, that is, the received data is put into the buffer and not played temporarily. When the audio data in the buffer reaches a certain number of blocks, exit the pre-buffer mode, and then start playing ...

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Abstract

The invention provides a method for improving the subjective quality of network audio, which comprises the following steps: judging whether to need to enter a pre-buffer mode according to the number of audio data blocks in a buffer area; stopping playing and placing the received audio data into the buffer area until exiting from the pre-buffer mode if needing to enter the pre-buffer mode; judging whether to need to enter an active packet-losing mode according to the number of audio data blocks in a buffer area; and stopping playing and placing the received audio data into the buffer area until exiting from the active packet-losing mode if needing to enter the pre-buffer mode. The method for improving the subjective quality of network audio avoids the reduction of the transmission quality caused by frequent sound break during the network transmission and improves the subjective feeling of an audio receiver on the network audio by adopting pre-buffer and active packet losing modes.

Description

technical field [0001] The invention relates to the field of network communication, in particular to a method for improving the subjective quality of network audio. Background technique [0002] At present, the transmission protocols based on the ip network mainly include the tcp protocol and the udp protocol. The tcp protocol is a reliable transmission with a connection, while the udp protocol is an unreliable transmission without a connection. Relatively speaking, the udp protocol has the advantages of being simple, fast, and real-time. Therefore, for network audio transmission with high real-time requirements, the udp protocol is generally used for transmission. The specific transmission mode is as follows: The data is transmitted through the udp protocol of the ip network, and the receiving end plays the received audio data at the same sampling rate. However, due to the low reliability of the udp protocol itself, audio data often suffers from data loss, jitter, sequence...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/56H04L29/08H04L47/32
Inventor 徐春
Owner TCL CORPORATION
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