Data sample compression and decompression using randomized quantization bins

摘要

A method for compressing data samples using randomized quantization bins is disclosed. The method generally comprises steps (A) to (C). Step (A) may generate a size signal having a quantization step size corresponding to the data samples in an input signal using a compression circuit. The data samples generally reside in a range of numbers. Step (B) may generate the randomized quantization bins in the range based on a pseudorandom process. Step (C) may generate a plurality of quantized samples in a compressed signal by quantizing the data samples based on the randomized quantization bins.

主权项

1. A method for compressing data samples, comprising the steps of:
(A) generating a current one or more of a plurality of quantization step sizes corresponding to said data samples of an input signal; (B) generating a plurality of values based on both (i) a pseudorandom process and (ii) a plurality of positions of said data samples; (C) generating a plurality of intermediate samples by adjusting said data samples based on said values, wherein said pseudorandom process varies said values in response to said current quantization step size; and (D) generating a plurality of quantized samples in a compressed signal by quantizing said intermediate samples based on said current quantization step size.