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    • 4. 发明授权
    • Correlating and decorrelating transforms for multiple description coding systems
    • 多个描述编码系统的相关和去相关变换
    • US07536299B2
    • 2009-05-19
    • US11312230
    • 2005-12-19
    • Corey I. ChengClaus Bauer
    • Corey I. ChengClaus Bauer
    • G10L19/00
    • G10L19/005H03M7/30
    • Transmitters and receivers in multiple description coding systems use correlating and decorrelating transforms to generate and process multiple descriptions of elements of an input signal. The multiple descriptions include groups of correlating transform coefficients that permit recovery of an inexact facsimile of the signal if some of the correlating transform coefficients are lost or corrupted during transmission. Noiseless implementations of the correlating and decorrelating transforms are described that allow the signal elements to be quantized with different quantizing resolutions. Implementations using the Fast Hadamard Transform are described that reduce the resources needed to perform the transforms.
    • 多描述编码系统中的发射器和接收器使用相关和去相关变换来产生和处理输入信号的元件的多个描述。 多个描述包括相关变换系数组,其允许在传输期间某些相关变换系数丢失或损坏时恢复信号的不精确传真。 描述相关和去相关变换的无噪声实现,其允许以不同的量化分辨率对信号元素进行量化。 描述使用快速哈达玛变换的实现,减少执行转换所需的资源。