SE9701659L

5G,4G,3G,2G

Title

Not Available

Application Number:

SE19970001659

Publication Date:

12-09-1997

Current Assignee:

Family ID:

Application Date:

02-05-1997

Publication Country:

US

Priority Date:

13-11-1995

Declaring Company:

Abstract  Abstract

A noise suppression system implemented in communication system provides an improved update decision during instances of sudden increase in background noise level. The noise suppression system inter alia generates an update by continually monitoring the deviation of spectral energy and forcing an update based on a predetermined threshold criterion. The spectral energy deviation is determined by utilizing an element which has the past values of the power spectral components exponentially weighted. The exponential weighting is a function of the current input energy which means the higher the input signal energy the longer the exponential window. Conversely the lower the signal energy the shorter the exponential window. The noise suppression system also inhibits a forced update during periods of continuous non-stationary input signals (such as music-on-hold).

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

Implicitly disclosed patent

Basis patent

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