Apparatus for reducing quantization distortion

Details Apparatus for reducing quantization distortion Apparatus for reducing quantization distortion

1996-09-13

1998-12-22

Elmore, Reba I.

Boots, shoes, and leggings

36472401, 36472403, 36472413, 36472801, 36472803, G06F 1710, G06F 738, G06F 1715

Patent

active

058525661

ABSTRACT:
An apparatus for fully reducing quantization distortion of a digital signal, which includes at least one digital low-pass filter, a counter, a selector and a corrector. Each of the digital low-pass filter(s) operates to pick up predetermined low frequency components from an input digital signal while expanding downward its bit length so as to obtain an output digital signal having the expanded bit length. The counter counts the number of consecutive samples having a same quantized level before and after each sample point of the input digital signal. And, in accordance with the count value of this counter, the selector selects and outputs either the input digital signal whose bit length was expanded downward or a digital signal passed through any one of the digital low-pass filters. Further, the corrector operates to make a discontinuous point (contained in the output of the selector) continuous. Thus, the apparatus allows its output signal to smoothly vary without unnecessarily attenuating the high frequency components.

REFERENCES:
patent: 5457457 (1995-10-01), Hayashi
patent: 5629883 (1997-05-01), Iwata

Affiliated with

Also associated with

Rating

Apparatus for reducing quantization distortion does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Apparatus for reducing quantization distortion, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus for reducing quantization distortion will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2052726