Method of detecting silence in a packetized voice stream
First Claim
Patent Images
1. A method of detecting silence in a packetized voice communication system, comprising the steps of:
- calculating a total energy value FEn for each packet of voice and calculating therefrom a smoothed energy value SEn as follows;
2 Assignments
0 Petitions
Accused Products
Abstract
A method and apparatus for detecting silence in voice packets. A packet energy calculator calculates a smoothed energy value for each packet of voice data to be transmitted. A noise level detector adaptively calculates noise values during periods of said silence. A silent packet detector compares the energy value to the noise value and if it is less than the noise value and less than a predetermined silence ceiling value then silence is indicated. Also, if the energy value is less than a predetermined silence noise value then silence is also indicated.
-
Citations
10 Claims
-
1. A method of detecting silence in a packetized voice communication system, comprising the steps of:
calculating a total energy value FEn for each packet of voice and calculating therefrom a smoothed energy value SEn as follows;
- View Dependent Claims (2, 3, 4, 5)
-
6. A silence detector for inhibiting transmission of silence packets by a network transmitter, comprising:
a packet energy calculator for calculating an energy value SEn for each packet of voice data to be transmitted, wherein said packet energy calculator further comprises an expander for generating sample energy values, an accumulator for summing said sample energy values for each packet thereby resulting in a total packet energy value FEn and circuitry for receiving said total packet energy value FEn and in response generating a smoothed energy value SEn, as follows;
- View Dependent Claims (7, 8, 9, 10)
Specification