Blackberry Corporation

Pindrop Security, Inc.

Khaled Lakhdhar

Lizhong Zhu

Michael Peter Montemurro

Terry Nelms, Ii

Kailash Patil

Akanksha

Chirag Tailor

Stephen John McCann

Cristian Lambiri

Elie Khoury

Dong Wang

Jun Xu

Daniel Fischer

Libo Zhu

Qingmai Zhou

Goran Hageltorn

Tianxiang Chen

Fei He

Parav Nagarsheth

Yan Wu

Zongyou Zhang

Mohammed Mahdi Hasan

Embodiments described herein provide for automatically detecting whether an audio signal is a spoofed audio signal or a genuine audio signal. A spoof detection system can include an audio signal transforming front end and a classification back end. Both the front end and the back end can include neural networks that can be trained using the same set of labeled audio signals. The audio signal transforming front end can include a one or more neural networks for per-channel energy normalization transformation of the audio signal, and the back end can include a convolution neural network for classification into spoofed or genuine audio signal. In some embodiments, the transforming audio signal front end can include one or more neural networks for bandpass filtering of the audio signals, and the back end can include a residual neural network for audio signal classification into spoofed or genuine audio signal.

Systems and methods for end-to-end architectures for voice spoofing detection

Embodiments described herein provide for detecting whether an Automatic Number Identification (ANI) associated with an incoming call is a gateway, according to rules-based models and machine learning models generated by the computer using call data stored in one or more databases.

Systems and methods of gateway detection in a telephone network

In some examples, to mitigate interference of wireless communications, an electronic device that includes a first type wireless component and a second type wireless component receives values of parameters relating to wireless communication using the first type wireless component. The electronic device determines, using a model of a relationship between the parameters relating to wireless communication using the first type wireless component and at least one handover parameter relating to wireless communication using the second type wireless component, a value of the at least one handover parameter based on the received values of the parameters relating to wireless communication using the first type wireless component. It is determined whether the electronic device should be handed over from a first access point to a second access point based on the determined value of the at least one handover parameter.

Determining handover parameters

Apparatus and method pertaining to the calculation of at least one value that represents, at least in part, wireless reception signal strength from the perspective of both a local wireless receiver and a remote receiver that receives wireless transmissions from a local wireless transmitter. By one approach the apparatus directly determines the wireless reception signal strength from the perspective of the local wireless receiver and indirectly determines the wireless reception signal strength from the perspective of the remote receiver.

Method and apparatus for calculating a coverage signal strength indicator

A method of controlling a wireless communication device to dynamically adapt and update roaming parameters stored in the device when operating in a wireless network. The method includes: determining a first roaming metric (M) for a first wireless access point (AP) of the network when the device is in communication with the first AP; determining a second roaming metric (M) for a second wireless AP of the network when the device has roamed to the second AP; and determining an adaptation value by subtracting Mfrom M. When the adaptation value is not zero, first roaming parameters associated with the first wireless AP are updated, based on the adaptation value and stored first roaming parameters associated with the first wireless AP and second roaming parameters associated with the second wireless AP are updated based on the adaptation value and stored second roaming parameters associated with the second wireless AP.

Method for controlling wireless communication devices when operating in a wireless communication network

An electronic device monitors a quality of a wireless connection between the electronic device and a first access point. Based on the monitoring and a collection of parameters relating to controlling handover between access points, a determination is made regarding whether the electronic device should be handed over to a second access point from the first access point, where the parameters differ for different combinations of the first access point and candidate destination access points for handover of the electronic device from the first access point.

Mitigating interference with wireless communications

Growing community of inventors

Atlanta, GA, United States of America

Khaled Lakhdhar