Invention Grant
- Patent Title: Channel-compensated low-level features for speaker recognition
-
Application No.: US15709024Application Date: 2017-09-19
-
Publication No.: US10347256B2Publication Date: 2019-07-09
- Inventor: Elie Khoury , Matthew Garland
- Applicant: PINDROP SECURITY, INC.
- Applicant Address: US GA Atlanta
- Assignee: Pindrop Security, Inc.
- Current Assignee: Pindrop Security, Inc.
- Current Assignee Address: US GA Atlanta
- Agency: Dentons US LLP
- Agent Eric L. Sophir
- Main IPC: G10L17/18
- IPC: G10L17/18 ; G10L17/04 ; G10L17/20 ; G10L17/02 ; G10L19/028

Abstract:
A system for generating channel-compensated features of a speech signal includes a channel noise simulator that degrades the speech signal, a feed forward convolutional neural network (CNN) that generates channel-compensated features of the degraded speech signal, and a loss function that computes a difference between the channel-compensated features and handcrafted features for the same raw speech signal. Each loss result may be used to update connection weights of the CNN until a predetermined threshold loss is satisfied, and the CNN may be used as a front-end for a deep neural network (DNN) for speaker recognition/verification. The DNN may include convolutional layers, a bottleneck features layer, multiple fully-connected layers and an output layer. The bottleneck features may be used to update connection weights of the convolutional layers, and dropout may be applied to the convolutional layers.
Public/Granted literature
- US20180082692A1 Channel-Compensated Low-Level Features For Speaker Recognition Public/Granted day:2018-03-22
Information query