A Novel Transcoding Technique between EVRC and G.729A for Mobile Multimedia Devices
In this paper, we propose a novel transcoding technique between enhanced variable rate codec (EVRC) and G.729A for mobile multimedia devices. The simplest way to communicate between heterogeneous speech networks is the cascade connection of two different codecs, called tandem coding. However, tandem...
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| Veröffentlicht in: | IEEE transactions on consumer electronics 2007-08, Vol.53 (3), p.885-890 |
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| container_title | IEEE transactions on consumer electronics |
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| creator | Kwon, Goo-rak Chung, Ji-min Nam, Sang-jae Ko, Sung-jea |
| description | In this paper, we propose a novel transcoding technique between enhanced variable rate codec (EVRC) and G.729A for mobile multimedia devices. The simplest way to communicate between heterogeneous speech networks is the cascade connection of two different codecs, called tandem coding. However, tandem coding not only has high computational loads, but also makes long delay. These problems can be solved by the effective transcoding algorithm using line spectral pair (LSP) and pitch delay conversion in speech codec. The proposed algorithm consists of LSP conversion, pitch delay conversion and algorithm for delay reduction. Experimental results show the proposed algorithm has lower computational complexity, shorter algorithm delay, and similar speech quality in comparison of the tandem algorithm. |
| doi_str_mv | 10.1109/TCE.2007.4341561 |
| format | Article |
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The simplest way to communicate between heterogeneous speech networks is the cascade connection of two different codecs, called tandem coding. However, tandem coding not only has high computational loads, but also makes long delay. These problems can be solved by the effective transcoding algorithm using line spectral pair (LSP) and pitch delay conversion in speech codec. The proposed algorithm consists of LSP conversion, pitch delay conversion and algorithm for delay reduction. 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| ispartof | IEEE transactions on consumer electronics, 2007-08, Vol.53 (3), p.885-890 |
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| source | IEEE Electronic Library (IEL) |
| subjects | Algorithms Codec Coding Conversion Decoding Delay Devices Encoding Internet telephony Linear predictive coding Multimedia Phase change materials Pulse modulation Speech Speech codecs Speech coding Transcoding |
| title | A Novel Transcoding Technique between EVRC and G.729A for Mobile Multimedia Devices |
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