US Patent Issued to Pindrop Security on May 5 for "Call classification through analysis of DTMF events" (Georgia Inventors)

ALEXANDRIA, Va., May 5 -- United States Patent no. 12,621,382, issued on May 5, was assigned to Pindrop Security Inc. (Atlanta).

"Call classification through analysis of DTMF events" was invented by Nick Gaubitch (Atlanta), Scott Strong (Atlanta), John Cornwell (Atlanta), Hassan Kingravi (Atlanta) and David Dewey (Atlanta).

According to the abstract* released by the U.S. Patent & Trademark Office: "Systems, methods, and computer-readable media for call classification and for training a model for call classification, an example method comprising: receiving DTMF information from a plurality of calls; determining, for each of the calls, a feature vector including statistics based on DTMF information such as DTMF residual signal comprising ch...