Patent ID: 9299359
Filing Date: 2016-03-29
CPC Classification: G10L,H04Q

Claim Text:
1. A voice quality enhancement (VQE) detector device for a network element receiving an audio signal from a previous network element of a network, wherein the VQE detector device is configured to: perform a VQE detection based on the received audio signal, wherein the VOE detection comprises: extracting and analyzing signal features from the received audio signal based on a statistical model, to detect that at least one voice quality enhancement function (VQEF) has been applied to the received audio signal by at least one previous network element of the network, wherein the statistical model is built on a database consisting of signals on which at least one type of VQE has been applied; and control a VQE processing of the received audio signal according to a detection result; wherein the VQEF comprises a noise reduction or an echo cancellation function; and the statistical model is formed by a Gaussian Mixture Model GMM.