The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 06, 2012
Filed:
Jun. 15, 2006
Mohamed El-hennawey, Kanata, CA;
Rafik Goubran, Ottawa, CA;
Ayman M. Radwan, Kingston, CA;
Lijing Ding, Nepean, CA;
Mohamed El-Hennawey, Kanata, CA;
Rafik Goubran, Ottawa, CA;
Ayman M. Radwan, Kingston, CA;
Lijing Ding, Nepean, CA;
Nortel Networks Limited, Mississauga, Ontario, CA;
Abstract
An apparatus (), method, and computer program to assess VoIP speech quality () using access to degraded signals is provided. Different types of impairment () have different effect, on speech quality. Preferred embodiments address up to four different types of impairment that affect VoIP signal quality: packet loss (), speech clipping in time (), noise () and echo. An overall assessment algorithm factors in degradation due to various impairment factors to generate an overall speech quality assessment score or value.