Signal dependent dither

Details Signal dependent dither Signal dependent dither

2011-01-25

2011-01-25

Lauture, Joseph (Department: 2819)

Coded data generation or conversion

Analog to or from digital conversion

Increasing converter resolution

C382S239000

Reexamination Certificate

active

07876247

ABSTRACT:
A new technique on the dithering of one-dimensional signals is presented. The novel technique determines whether dither is needed when reducing the bit depth and evaluates whether the total error of the un-dithered quantization is white noise. If this is the case, then no undesired harmonics are added in the quantization or re-quantization process. The novel technique presents a state of the art signal-dependent dither having a lower quantization noise.

REFERENCES:
patent: 5337251 (1994-08-01), Pastor

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