D/A converter noise reduction system

Details D/A converter noise reduction system D/A converter noise reduction system

1994-04-28

1997-01-14

Young, Brian K.

Coded data generation or conversion

Analog to or from digital conversion

Digital to analog conversion

H03M 166

Patent

active

055944434

ABSTRACT:
An apparatus for improving the quality of an analog signal reproduced from digital samples by limiting the amount of sampling and quantization noise present within reproduced analog signals. The apparatus is comprised of a D/A converter coupled to an interpolator processing original digital samples operating at a reproduction rate greater than the original sampling frequency and at a digital resolution greater than or equal to the original digital samples to generate digital pseudo-samples. The processed digital pseudo-samples are then provided to the D/A converter at the reproduction rate. As a consequence of the increase in the reproduction rate, sampling noise is moved further away in the frequency domain from the original analog signal, thus eliminating or reducing the requirement for a low-pass filter. Due to the increased number of samples and the increased digital resolution of the samples, the reproduction errors are further minimized.

REFERENCES:
patent: 4620158 (1986-10-01), Yasukawa
patent: 4768108 (1988-08-01), Higurashi

Affiliated with

Also associated with

Rating

D/A converter noise reduction system does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with D/A converter noise reduction system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and D/A converter noise reduction system will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1391476