Inventor

RAMSDEN DAVID B

US3 patents

⚠️ This page may combine multiple inventors who share the name “RAMSDEN DAVID B”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

AT & T BELL LAB

1 patent

US5216702AJun 1, 1993

Nonintrusive speech level and dynamic noise measurements

AT & T BELL LAB61 citations90

AT & T IP I LP

1 patent

US7516033B2Apr 7, 2009

Method and apparatus for identifying echo sources in a communication path

AT & T IP I LP4 citations59

JAMES JAMES

1 patent

US8391126B2Mar 5, 2013

Method and apparatus for providing echo cancellation in a network

JAMES JAMES1 citations39