Patent ID: 9571652
Date: 2017-02-14
CPC Classifications: G06F,G10L,H04L,H04M

Claim:
1. A method for processing call audio data, the method comprising: receiving a stream of call audio data collected during a call event between an agent and a caller; separating the stream of call audio data into segments based on a call schema; extracting, for each segment, a channel model that describes how the call audio data has been affected by the channel through which the call audio data has been communicated, wherein an agent's channel model is distinct from a caller's channel model; comparing channel models for each segment; grouping segments corresponding to the caller based on the comparison; identifying the caller as a fraudster by comparing the channel models in the group of segments corresponding to the caller to channel models stored in a fraudster database; transmitting to the agent a notification if the caller is a fraudster; and enrolling the grouped segments into the fraudster database.