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Audio data packet format and decoding method thereof and method for correcting mobile communication terminal codec setup error and mobile communication terminal performance same

An audio codec and audio data packet technology, applied in the field of audio data packet format and its decoding, mobile communication terminal, and correcting codec installation errors, can solve the problem of wrong decoding, sound source without excellent quality, mobile communication terminal can not be aware of wait until the problem

Inactive Publication Date: 2012-04-04
SK TELECOM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, the current ring-back tone service has a problem that the output sound source does not have excellent quality, and if a frame is lost when the sound source data is transmitted for providing the ring-back tone, the mobile communication terminal cannot be aware of the loss.
This leads to wrong decoding

Method used

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  • Audio data packet format and decoding method thereof and method for correcting mobile communication terminal codec setup error and mobile communication terminal performance same
  • Audio data packet format and decoding method thereof and method for correcting mobile communication terminal codec setup error and mobile communication terminal performance same
  • Audio data packet format and decoding method thereof and method for correcting mobile communication terminal codec setup error and mobile communication terminal performance same

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Embodiment Construction

[0023] Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. In the following description and drawings, the same reference numerals are used to designate the same or similar components, and thus repeated descriptions of the same or similar components will be omitted.

[0024] figure 1 The construction of a conventional EVRC packet is shown.

[0025] Most mobile communication terminals employ a voice codec with a variable transmission rate, such as EVRC (Enhanced Variable Rate Codec), in order to provide efficient voice communication via an optimized wireless channel. EVRC digitizes voice used in digital mobile communication systems and has a transmission rate of 8 Kbps. EVRC can effectively prevent the deterioration of sound quality. In addition, EVRC variably encodes voice information according to the amount of information. Specifically, EVRC encodes speech at a low rate when the amount of information is...

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Abstract

Disclosed is an audio data packet format for transmitting an IYlPEG-4 HE-AAC frame via a voice channel of a mobile communication network, a method for decoding the audio data packet format, a method for correcting a codec setup error by identifying a codec used to encode sound source data inserted into a data field of voice slot data, based on the sequence number of the voice slot data, and correcting the codec setup error when a codec set up in a mobile communication terminal is different from the codec used to encode the sound source data, and a mobile communication terminal adapted to correct a codec setup error.

Description

technical field [0001] The present invention relates to an audio data packet format, a method of decoding such an audio data packet format, a method of correcting codec installation errors, and a mobile communication terminal adapted to correct codec installation errors. More particularly, the present invention relates to an audio packet format for transmitting MPEG-4 HE-AAC (High Efficiency Advanced Audio Coding) frames via a voice channel of a mobile communication network and a decoding method thereof. Furthermore, the present invention also relates to such a method of correcting a codec installation error and a mobile communication terminal suitable for correcting a codec installation error by the following steps: based on the serial number of voice slot data, identifying a codec used to encode the sound source data inserted into the data field of the voice slot data; and when the codec installed in the mobile communication terminal is different from the codec used to encod...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L29/06G10L19/00H04L12/70
CPCY02B60/50G10L19/008G10L19/167G10L19/24
Inventor 朴圣水金圣根吴世铉
Owner SK TELECOM CO LTD