EP1864281A1

5G,4G,3G

Title

Systems methods and apparatus for highband burst suppression

Application Number:

EP20060740352

Publication Date:

12-12-2007

Current Assignee:

QUALCOMM INC

Family ID:

36588741

Application Date:

03-04-2006

Declaring Company:

QUALCOMM INC

Publication Country:

US

Priority Date:

01-04-2005

View on Espacenet goto-link

Title

Systems methods and apparatus for highband burst suppression

Application Number:

EP20060740352

Family ID:

36588741

Publication Country:

US

Publication Date:

12-12-2007

Application Date:

03-04-2006

Priority Date:

01-04-2005

Current Assignee:

QUALCOMM INC

Declaring Company:

QUALCOMM INC

View on Espacenet goto-link

Abstract  Abstract

In one embodiment a highband burst suppressor includes a first burst detector configured to detect bursts in a lowband speech signal and a second burst detector configured to detect bursts in a corresponding highband speech signal. The lowband and highband speech signals may be different (possibly overlapping) frequency regions of a wideband speech signal. The highband burst suppressor also includes an attenuation control signal calculator configured to calculate an attenuation control signal according to a difference between outputs of the first and second burst detectors. A gain control element is configured to apply the attenuation control signal to the highband speech signal. In one example the attenuation control signal indicates an attenuation when a burst is found in the highband speech signal but is absent from a corresponding region in time of the lowband speech signal.

In one embodiment a highband burst suppressor includes a first burst detector configured to detect bursts in a lowband speech signal and a second burst detector configured to detect bursts in a corresponding highband speech signal. The lowband and highband speech signals may be different (possibly overlapping) frequency regions of a wideband speech signal. The highband burst suppressor also includes an attenuation control signal calculator configured to calculate an attenuation control signal according to a difference between outputs of the first and second burst detectors. A gain control element is configured to apply the attenuation control signal to the highband speech signal. In one example the attenuation control signal indicates an attenuation when a burst is found in the highband speech signal but is absent from a corresponding region in time of the lowband speech signal.

Note:

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

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