Frame erasure concealment method used for wideband embedded speech codec
An efficient frame erasure concealment（FEC）method for wideband embedded speech codec was proposed.The erased speech frame was classified as voiced,unvoiced,silence,unvoiced transit to voiced and voiced transit to unvoiced at decoder.The energy of excitations was carefully controlled based on the cla...
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| Format: | Article |
| Language: | zho |
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Editorial Department of Journal on Communications
2008-01-01
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| Series: | Tongxin xuebao |
| Subjects: | |
| Online Access: | http://www.joconline.com.cn/zh/article/74655261/ |
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| _version_ | 1841537525216182272 |
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| author | ZHU Heng BAO Chang-chun LI Rui |
| author_facet | ZHU Heng BAO Chang-chun LI Rui |
| author_sort | ZHU Heng |
| collection | DOAJ |
| description | An efficient frame erasure concealment（FEC）method for wideband embedded speech codec was proposed.The erased speech frame was classified as voiced,unvoiced,silence,unvoiced transit to voiced and voiced transit to unvoiced at decoder.The energy of excitations was carefully controlled based on the classification of the speech.To match with the configuration of the embedded speech codec,the adaptive codebook for erased frame was recovered with the last frame’s bit-stream.For increasing the robustness of the codec,the contribution of adaptive codebook was prop-erly constrained at encoder.The proposed FEC method is very simple and has a good performance without extra delay and bits requirements in codec.This method has been applied to an embedded variable bits rate codec submitted to ITU-T as a candidate. |
| format | Article |
| id | doaj-art-353d9d8f93a94fe0bdb080c47360879f |
| institution | Kabale University |
| issn | 1000-436X |
| language | zho |
| publishDate | 2008-01-01 |
| publisher | Editorial Department of Journal on Communications |
| record_format | Article |
| series | Tongxin xuebao |
| spelling | doaj-art-353d9d8f93a94fe0bdb080c47360879f2025-01-14T08:32:30ZzhoEditorial Department of Journal on CommunicationsTongxin xuebao1000-436X2008-01-011774655261Frame erasure concealment method used for wideband embedded speech codecZHU HengBAO Chang-chunLI RuiAn efficient frame erasure concealment（FEC）method for wideband embedded speech codec was proposed.The erased speech frame was classified as voiced,unvoiced,silence,unvoiced transit to voiced and voiced transit to unvoiced at decoder.The energy of excitations was carefully controlled based on the classification of the speech.To match with the configuration of the embedded speech codec,the adaptive codebook for erased frame was recovered with the last frame’s bit-stream.For increasing the robustness of the codec,the contribution of adaptive codebook was prop-erly constrained at encoder.The proposed FEC method is very simple and has a good performance without extra delay and bits requirements in codec.This method has been applied to an embedded variable bits rate codec submitted to ITU-T as a candidate.http://www.joconline.com.cn/zh/article/74655261/speech codingembedded codingframe erasure concealmentVoIP |
| spellingShingle | ZHU Heng BAO Chang-chun LI Rui Frame erasure concealment method used for wideband embedded speech codec Tongxin xuebao speech coding embedded coding frame erasure concealment VoIP |
| title | Frame erasure concealment method used for wideband embedded speech codec |
| title_full | Frame erasure concealment method used for wideband embedded speech codec |
| title_fullStr | Frame erasure concealment method used for wideband embedded speech codec |
| title_full_unstemmed | Frame erasure concealment method used for wideband embedded speech codec |
| title_short | Frame erasure concealment method used for wideband embedded speech codec |
| title_sort | frame erasure concealment method used for wideband embedded speech codec |
| topic | speech coding embedded coding frame erasure concealment VoIP |
| url | http://www.joconline.com.cn/zh/article/74655261/ |
| work_keys_str_mv | AT zhuheng frameerasureconcealmentmethodusedforwidebandembeddedspeechcodec AT baochangchun frameerasureconcealmentmethodusedforwidebandembeddedspeechcodec AT lirui frameerasureconcealmentmethodusedforwidebandembeddedspeechcodec |