U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Analysis of audio quality using speech recognition and synthesis

Patent 5848384 Issued on December 8, 1998. Estimated Expiration Date: Icon_subject January 13, 2017. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Patent References

System for channel switching based on speech word versus noise detection Patent #: 4063031
Issued on: 12/13/1977
Inventor: Grunza

Inventors

Assignee

Application

No. 765737 filed on 01/13/1997

US Classes:

704/231, Recognition704/233Detect speech in noise

Examiners

Primary: Knepper, David D.
Assistant: Zintel, Harold

Attorney, Agent or Firm

International Class

H04M 003/22

Foreign Application Priority Data

1994-08-18 EP

Abstract

An apparatus for monitoring signal quality in a communications link is provided which recognizes speech elements in signals received over the communications link and generates therefrom an estimate of the original speech signal, and compares the estimated signal with the actual received signal to provide an output based on the comparison.

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