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Method and device for encoding and decoding audio signal

An audio signal coding and audio signal technology, applied in the direction of pulse modulation TV signal transmission, speech analysis, instruments, etc., can solve the problem of frequency band limitation and so on

Inactive Publication Date: 2012-10-03
ELECTRONICS & TELECOMM RES INST +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, the existing DMB system has the problem of limiting the frequency band for transmitting data in a mobile environment, so it can only provide stereo audio services

Method used

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  • Method and device for encoding and decoding audio signal
  • Method and device for encoding and decoding audio signal
  • Method and device for encoding and decoding audio signal

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Embodiment Construction

[0021] Hereinafter, specific exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0022] figure 1 is a block diagram showing a detailed structure of an encoding device of an audio signal according to an exemplary embodiment of the present invention.

[0023] An audio signal encoding device 100 according to an embodiment of the present invention includes a receiver 110 , a first encoder 120 , a second encoder 130 and a multiplexer 140 . The functions of each structural element will be described in detail below.

[0024] The receiver 110 receives at least one of the multi-channel audio signal and the first audio signal.

[0025] At this time, the first audio signal means an ordinary audio signal provided during the satellite DMB service. According to an embodiment of the present invention, the first audio signal may include a mono audio signal (mono audio signal) and a stereo audio signal (stereo audio signal...

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Abstract

The present invention provides a method and device for encoding and decoding audio signal. According to one facet of the present invention, an audio signal encoding device is provided, which comprises: a receiver for receiving at least one of a multi-channel audio signal and a first audio signal; a first encoder for loading and mixing the multi-channel audio signal to generate a second audio signal and extract a space parameter from the multi-channel audio signal; a second encoder encoding at least one of the first audio signal and the second audio signal to generate an audio signal to be encoded; and a multiplexor for performing multiplexing to the audio signal to be encoded and the space parameter, so as to generate a satellite digital multimedia broadcasting streaming.

Description

technical field [0001] The invention discloses an audio signal encoding and decoding method and its device, more specifically, it provides an audio signal encoding and decoding method capable of playing multi-channel audio signals in a satellite digital multimedia broadcasting service and its device. Background technique [0002] Digital Multimedia Broadcasting (DMB: Digital Multimedia Broadcasting) refers to a mobile multimedia broadcasting service used to watch noiseless video and audio in a mobile environment. DMB has the characteristics of providing broadcasting in a mobile environment, that is, providing QVGA (Quarter Video Graphics Array)-level video and stereo audio. [0003] In order to provide DMB services, various types of receivers, such as built-in mobile phones, PC-mounted, and car-mounted types, have been manufactured, and recently produced products such as navigators and personal multimedia players (PMP: personal multimedia player) are almost Both include th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N7/52G10L19/14
Inventor 李用主徐廷一白承权姜京玉洪镇佑金镇雄安致得金丰民金玄锡赵涓脩金钟灿申承镐
Owner ELECTRONICS & TELECOMM RES INST