US2004193407A1

5G,4G,3G,2G

Title

System and method for combined frequency-domain and time-domain pitch extraction for speech signals

Application Number:

US20030403792

Publication Date:

30-09-2004

Current Assignee:

Family ID:

Application Date:

31-03-2003

Declaring Company:

Publication Country:

US

Priority Date:

31-03-2003

Title

System and method for combined frequency-domain and time-domain pitch extraction for speech signals

Application Number:

US20030403792

Family ID:

Publication Country:

US

Publication Date:

30-09-2004

Application Date:

31-03-2003

Priority Date:

31-03-2003

Current Assignee:

Declaring Company:

Abstract  Abstract

A system computer readable medium and method for sampling a speech signal; dividing the sampled speech signal into overlapped frames; extracting first pitch information from a frame using frequency domain analysis; providing at least one pitch candidate each being associated with a spectral score from the first pitch information each of the at least one pitch candidate representing a possible pitch estimate for the frame; extracting second pitch information from the frame using a time domain analysis; providing a correlation score for the at least one pitch candidate from the second pitch information; and selecting one of the at least one pitch candidate to represent the pitch estimate of the frame. The system computer readable medium and method are suitable for speech coding and for distributed speech recognition.

Note:

The information in blue was extracted from the third parties (Standard Setting Organisation, Espacenet)

The information in grey was provided by the patent holder

The information in purple was extracted from the FrandAvenue

Explicitly disclosed patent:openly and comprehensibly describes all details of the invention in the patent document.

Implicitly disclosed patent:does not explicitly state certain aspects of the invention, but still allows for these to be inferred from the information provided.

Basis patent:The core patent in a family, outlining the fundamental invention from which related patents or applications originate.

Family member:related patents or applications that share a common priority or original filing.