Variable gain encoder apparatus and method

Details Variable gain encoder apparatus and method Variable gain encoder apparatus and method

1988-03-09

1989-10-17

Shoop, Jr., William M.

Coded data generation or conversion

Analog to or from digital conversion

Nonlinear

341131, 341136, H03M 118

Patent

active

048750450

ABSTRACT:
A variable gain analog to digital compression encoder apparatus and method is operational for `on the fly` gain adjustments without introducing significant distortion or noise in telephone conversation. An incoming analog signal is fixed gain reproduced as a first stabilized mid-operating point analog signal. A second stabilized mid-operating point analog signal is produced in inverse proportion to the first stabilized mid-operating point analog signal, in response to a signal tapped along a signal division of a difference between the first and second signals. The second signal is compression encoded at a predetermined rate to produce pulse code modulated signal samples. The tap may be varied to change the encoding gain, at any time, in accordance with operating requirements of a telephone apparatus.

REFERENCES:
patent: 3936819 (1976-02-01), Angelle et al.
patent: 4321583 (1982-03-01), Baron et al.
patent: 4383247 (1983-05-01), Assard

Affiliated with

Also associated with

Rating

Variable gain encoder apparatus and method does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Variable gain encoder apparatus and method, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Variable gain encoder apparatus and method will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1745915