Keyword Voice Authentication for Low-Latency User Verification
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Solution Overview
Problem
Existing voice-based user authentication systems experience significant latency due to the processing of longer duration speech inputs, leading to noticeable delays and user inconvenience.
Innovation Solution
Implementing a two-stage text-independent user verification process that authenticates users based on a detected keyword, allowing immediate authentication if similarity exceeds a first threshold, and requiring a second stage for further verification if the threshold is not met, thereby reducing latency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If longer duration speech is processed for more accurate user authentication, then authentication accuracy is improved, but processing latency increases
Solution Approach 1:
The patent segments the speech processing into two distinct stages: (1) keyword detection stage where the system listens for a trigger word and performs preliminary authentication, and (2) command processing stage where the full speech command is processed. This segmentation allows the system to make authentication decisions earlier without waiting for the complete speech input, thereby reducing latency while maintaining accuracy through the two-stage verification process.
Solution Approach 2:
The patent implements preliminary action by performing authentication verification during the keyword detection phase before the complete speech command is processed. The system preliminarily determines user identity based on the keyword and voice characteristics detected so far, and can proceed with command execution once authentication is confirmed, eliminating the need to wait for the entire speech input to complete.
2Ease of operation
If text-independent speech analysis is used for user authentication, then ease of operation is improved, but processing time increases
Solution Approach 1:
The patent segments the authentication process into two stages: (1) keyword detection and preliminary authentication using text-independent speech analysis, and (2) command processing. By segmenting this way, the system performs the more time-consuming text-independent analysis only when necessary (during keyword detection) rather than continuously processing the entire speech command, thus reducing overall authentication time while maintaining ease of operation.
Solution Approach 2:
The patent applies partial action by performing text-independent speech analysis only on the keyword portion of speech rather than the entire command. The system analyzes sufficient speech data (the keyword and associated voice characteristics) to make authentication decisions without requiring analysis of the complete speech command, thereby reducing processing time while maintaining adequate authentication accuracy.
Data Source
AI summary
Disclosed are systems, apparatuses, processes, and computer-readable media to capture audio. A method of processing audio data includes obtaining first audio information from a user using an audio sensor of a user device; determining whether the first audio information includes audio corresponding to a detected keyword that configures the user device to receive or process one or more commands from the user; based on the first audio information including the audio corresponding to the detected keyword, determining a similarity between the first audio information corresponding to the detected keyword and a model of an authenticated user; and determining whether to authenticate the user as the authenticated user based on a comparison of the similarity between the first audio information and the model of the authenticated user to a first threshold.