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- W2113901825 abstract "The use of multiple entropy models for Huffman or arithmetic coding is widely used to improve the compression efficiency of many algorithms when the source probability distribution varies. However, the use of multiple entropy models increases the memory requirements of both the encoder and decoder significantly. In this paper, we present an algorithm which maintains almost all of the compression gains of multiple entropy models for only a very small increase in memory over one which uses a single entropy model. This can be used for any entropy coding scheme such as Huffman or arithmetic coding. This is accomplished by employing multiple entropy models only for the most probable symbols and using fewer entropy models for the less probable symbols. We show that this algorithm reduces the audio coding bitrate by 5%-8% over an existing algorithm which uses the same amount of table memory by allowing effective switching of the entropy model being used as source statistics change over an audio transform block." @default.
- W2113901825 created "2016-06-24" @default.
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- W2113901825 date "2008-10-01" @default.
- W2113901825 modified "2023-10-01" @default.
- W2113901825 title "Selective use of multiple entropy models in audio coding" @default.
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- W2113901825 doi "https://doi.org/10.1109/mmsp.2008.4665208" @default.
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