Dither Signals and Their Effect on Quantization Noise
Dither Signals and Their Effect on Quantization Noise
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DOI：
10.1109/tcom.1964.1088973
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发表时间：
1964-12
影响因子：
8.3
通讯作者：
L. Schuchman
中科院分区：
文献类型：
--
作者：
L. Schuchman
在本文中，一个抖动信号必须满足的条件，使量化器噪声可以被认为是独立的信号推导出具有有限数量的水平的量化器。给出了满足这些条件的无穷多类抖动信号。可以看出，这类最有用的成员是一个其概率密度函数均匀分布在一个量化区间。本文还证明了噪声n（t）与信号x（t）无关的一个充分必要条件是有一个可测量，称为“D”因子为零。
In this paper, the conditions a dither signal must meet so that the quantizer noise can be considered independent of the signal are derived for a quantizer having a finite number of levels. An infinite class of dither signals which satisfy these conditions is given. It is seen that the most useful member of this class is one whose probability density function is uniformly distributed over a quantizing interval. It is also shown that a necessary and sufficient condition for the noise n(t) to be independent of the signal x(t) is that a measurable quantity, called the "D" factor, be zero.