Method, device and system for hiding audio stream error

Abstract

The invention discloses a method of hiding the error of audio stream. The said method comprises: a. sorting the transmitting audio frame in term of content to obtain the type information of the said audio frame; b. packaging the type information of the said audio frame and the coding result of the said audio frame and sending them; c. determining that the type information of the lost audio frame is obtained in term of content when the frame is lost; d. reconstructing the audio frame using the corresponding error recovering strategy based on the type information of lost audio frame. The said way of hiding the error make the reconstruction of lost frame with stronger pertinence; the audio frame is self-adapting reconstructed to obtain better compensation effect. The invention also discloses a sending and receiving method of hiding the error of audio stream. The invention also discloses a transmitter, receiver and system of hiding the error of audio stream.

Description

technical field [0001] The invention relates to real-time audio communication technology, in particular to a method, device and system for audio stream error concealment. Background technique [0002] People have been engaged in audio classification research for a long time, but for different application scenarios, the methods and classification results of audio classification are not the same. For example, 1. In the noise suppression of advanced audio equipment, frequency modulation analysis or Bayesian classifiers are commonly used to classify audio signals. 2. In order to better index and retrieve audio resources on the Internet, researches on content-based audio classification and retrieval have been carried out. In the more representative content-based audio classification work, the distinguishing features of audio are analyzed in detail, including loudness, pitch, harmonicity, etc., and an audio classifier is designed. 3. Another application of audio classification i...

AI Technical Summary

Problems solved by technology

[0008] 1. Increase redundancy: increasing data redundancy can improve the fault tolerance of the system, but at the same time increase the bandwidth

[0009] 2. Forward Error Correction (FEC): This strategy also relies on adding information that can repair lost packets in the transmission stream, using blocks or algebraic codes to generate additional transmission packets that can assist error correction, which also requires increased bandwidth

[0010] 3. Priority setting method: This technology requires network support and transmits packets according to priority, otherwise it cannot be realized, and it can only improve the packet loss probability caused by network congestion

[0023] To sum up, the current audio stream error concealment technology is still unable to achieve efficient error concealment of audio frames, so that the requirements for packet loss rate in the audio communication process cannot be reduced

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