Method of and an apparatus for eliminating background noise in d

Details Method of and an apparatus for eliminating background noise in d Method of and an apparatus for eliminating background noise in d

1994-05-02

1996-08-13

Tung, Kee M.

Electrical audio signal processing systems and devices

Hearing aids, electrical

Specified casing or housing

381 46, 360 32, G01L 302

Patent

active

055464971

ABSTRACT:
A method of suppressing background noise in a digital sound recording and reproducing system includes the steps of preselecting a specific voltage range to be considered to contain substantially all background noise, selecting a quiet sound benchmark voltage taken as zero output, defining a number of least significant bits of a digital sound signal confining the noise, defining voltages corresponding to the number of least significant bits, and replacing these voltages within the voltage range for both positive and negative most significant bits around the benchmark voltage with the benchmark voltage which clears sound signals from this type of noise. An apparatus for practicing the method employs logic circuitry providing suppression of signals within the preselected range.

REFERENCES:
patent: 4636876 (1987-01-01), Schwartz
patent: 5212764 (1993-05-01), Ariyoshi

Affiliated with

Also associated with

Rating

Method of and an apparatus for eliminating background noise in d does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method of and an apparatus for eliminating background noise in d, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of and an apparatus for eliminating background noise in d will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1055617