Patent ID: 9263055
Filing Date: 2016-02-16
CPC Classification: G10L,H04R

Claim Text:
1. A system for generating an audio CAPTCHA (Completely Automated Public Turing test to tell Computers and Humans Apart) prompt, the system comprising: a decoy signal database that stores a plurality of decoy signals, the decoy signal database comprising at least one non-transitory computer-readable medium; and a three-dimensional audio simulation engine that simulates the sounding of a target signal and at least one decoy signal in an acoustic environment and outputs a stereophonic audio signal based on the simulation, the stereophonic audio signal usable as the audio CAPTCHA prompt; wherein to simulate the sounding of the target signal and the at least one decoy signal in the three-dimensional acoustic environment, the three-dimensional audio simulation engine: wherein the decoy signal is a first audio speech signal and the target signal is a second audio speech signal containing an authentication key.