Patent ID: 8036902
Filing Date: 2011-10-11
Classification: G06F,G10L

Abstract:
1. A method of using audio content in a telephone call to verify that a user is human rather than an automated system, the method, comprising: producing primary audio content using a first set of information and a first voice; producing secondary audio content using the second voice; generating an audio challenge using the first voice and the second voice that is different from the first voice; the first voice being audibly distinguishable, by human, from the second voice; wherein, the first voice conveys a first set of information including a random sequence of characters; delivering, during the telephone call, an audible playback of the audio challenge to a user via a user device; further instructing the user, during the telephone call, to extract the first set of information conveyed in the first voice; receiving a voice reply from the user in response to audible playback of the audio challenge; determining whether the user is human based on whether the voice reply includes the first set of information conveyed using the first voice in the audio challenge.