Abstract
An improved noise suppression system (800) is disclosed which performs speech quality enhancement upon the speech-plus-noise signal available at the input (205) to generate a clean speech signal at the output (265) by spectral gain modification. The improvements of the present invention include the addition of a signal-to-noise ratio (SNR) threshold mechanism (830) to reduce background noise flutter by offsetting the gain rise of the gain tables until a certain SNR threshold is reached the use of a voice metric calculator (810) to produce more accurate background noise estimates via performing the update decision based on the overall voice-like characteristics in the channels and the time interval since the last update and the use of a channel SNR modifier (820) to provide immunity to narrowband noise bursts through modification of the SNR estimates based on the voice metric calculation and the channel energies.
| Technology | Declaration Information | Specification Information | Explicitly Disclosed | Patent Type | |||||
|---|---|---|---|---|---|---|---|---|---|
| Declaration Date | Declaration Reference | Declaring Company | Specification Information | ||||||
| 2G | 27/10/1999 | ISLD-201005-008 | MOTOROLA INC |
S1
|
Yes | Basis Patent | |||
| 2G | 17/12/2010 | ISLD-201101-005 | MOTOROLA INC | No | Family Member | ||||
| 2G | 17/12/2010 | ISLD-201101-005 | MOTOROLA INC | Yes | Basis Patent | ||||
Specification Information
Specification Information
Technologies
Family Information
| All Granted Patents In Patent Family : | ---- |
| Publication No | Technology | Declaration Information | Specification Information | Explicitly Disclosed | Patent Type | |||||
|---|---|---|---|---|---|---|---|---|---|---|
| Declaration Date | Declaration Reference | Declaring Company | Specification Information | |||||||
| EP0380563A1 | 2G | 27/10/1999 | ISLD-201005-008 | MOTOROLA INC |
S1
|
No | Family Member | |||
| EP0380563A1 | 2G | 17/12/2010 | ISLD-201101-005 | MOTOROLA INC | Yes | Basis Patent | ||||
| EP0380563A1 | 2G | 17/12/2010 | ISLD-201101-005 | MOTOROLA INC | No | Family Member | ||||
| EP0380563A4 | 2G | 27/10/1999 | ISLD-201005-008 | MOTOROLA INC |
S1
|
No | Family Member | |||
| EP0380563A4 | 2G | 17/12/2010 | ISLD-201101-005 | MOTOROLA INC | Yes | Basis Patent | ||||
| EP0380563A4 | 2G | 17/12/2010 | ISLD-201101-005 | MOTOROLA INC | No | Family Member | ||||
| EP0380563B1 | 2G | 27/10/1999 | ISLD-201005-008 | MOTOROLA INC |
S1
|
No | Family Member | |||
| EP0380563B1 | 2G | 17/12/2010 | ISLD-201101-005 | MOTOROLA INC | Yes | Basis Patent | ||||
| EP0380563B1 | 2G | 17/12/2010 | ISLD-201101-005 | MOTOROLA INC | No | Family Member | ||||
| WO8903141A1 | 2G | 27/10/1999 | ISLD-201005-008 | MOTOROLA INC |
S1
|
No | Family Member | |||
| WO8903141A1 | 2G | 17/12/2010 | ISLD-201101-005 | MOTOROLA INC | Yes | Basis Patent | ||||
| WO8903141A1 | 2G | 17/12/2010 | ISLD-201101-005 | MOTOROLA INC | No | Family Member | ||||
| JP2995737B2 | 2G | 27/10/1999 | ISLD-201005-008 | MOTOROLA INC |
S1
|
No | Family Member | |||
| JP2995737B2 | 2G | 17/12/2010 | ISLD-201101-005 | MOTOROLA INC | Yes | Basis Patent | ||||
| JP2995737B2 | 2G | 17/12/2010 | ISLD-201101-005 | MOTOROLA INC | No | Family Member | ||||
| JPH03500347A | 2G | 27/10/1999 | ISLD-201005-008 | MOTOROLA INC |
S1
|
No | Family Member | |||
| JPH03500347A | 2G | 17/12/2010 | ISLD-201101-005 | MOTOROLA INC | Yes | Basis Patent | ||||
| JPH03500347A | 2G | 17/12/2010 | ISLD-201101-005 | MOTOROLA INC | No | Family Member | ||||
| DE3856280T2 | 2G | 27/10/1999 | ISLD-201005-008 | MOTOROLA INC |
S1
|
No | Family Member | |||
| DE3856280T2 | 2G | 17/12/2010 | ISLD-201101-005 | MOTOROLA INC | No | Family Member | ||||
| KR970000789B1 | 2G | 27/10/1999 | ISLD-201005-008 | MOTOROLA INC |
S1
|
No | Family Member | |||
| KR970000789B1 | 2G | 17/12/2010 | ISLD-201101-005 | MOTOROLA INC | No | Family Member | ||||
| KR890702356A | ----- | ----- | ----- | ----- | ----- | ----- | ----- | |||
| Publication No | Technology | Declaration Information | Specification Information | Explicitly Disclosed | Patent Type | Status | National Phase Entries | |||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Declaration Date | Declaration Reference | Declaring Company | Specification Information | |||||||||
| ----- | ----- | ----- | ----- | ----- |
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The information in blue was extracted from the third parties (Standard Setting Organisation, Espacenet)
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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.