Patent Document ID: 8306814
Application ID: 12777282
Patent Flag: 1

Claim One:
1. A method for classification of a first audio signal and a second audio signal into an agent audio signal and a customer audio signal of an interaction, the first audio signal and the second audio signal representing two sides of the interaction, comprising: receiving the first audio signal and the second audio signal, the first audio signal and the second audio signal comprising audio captured by a logging and capturing unit associated with a call center; extracting a first feature vector and a first feature means from the first audio signal and a second feature vector and a second feature means from the second audio signal; adapting a universal background model to the first feature vector and to the second feature vector to obtain a first supervector and a second supervector; combining the first supervector with the first feature means to obtain a first combined vector, and combining the second supervector with the second feature means to obtain a second combined vector; projecting the first combined vector and the second combined vector using a projection matrix obtained in an unsupervised manner, to obtain a first projected vector and a second projected vector; and if the accumulated score of the first projected vector against an agent calls cluster and the second projected vector against an customer calls cluster, is higher than the accumulated score of the first projected vector against the customer calls cluster and the second projected vector against the agent calls cluster, determining that the first audio signal is the agent audio signal and the second audio signal is the customer audio signal, otherwise determining that the first audio signal is the customer audio signal and the second audio signal is agent audio signal.