Voice Authentication Device Using Multi-Period Signal Merging
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Solution Overview
Problem
Existing voiceprint authentication systems face decreased accuracy when dealing with short voice data lengths, leading to potential identity denial issues.
Innovation Solution
An authentication device and method that acquire and compare voice signals from distinct utterance periods to enhance authentication accuracy, connecting and re-evaluating voice signals in chronological order to strengthen feature extraction and improve matching with a database.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If voiceprint authentication is performed using short voice data, then the authentication process can be completed quickly, but the authentication accuracy decreases and identity may be denied
Solution Approach 1:
The patent combines multiple voice signals from different utterance periods to create a composite voice signal for authentication. By merging multiple short voice samples chronologically, the system accumulates sufficient voice data length to improve authentication accuracy while maintaining efficient processing through automated combination logic
2Measurement precision
If multiple voice signals from different utterance periods are compared, then the feature extraction is strengthened and authentication accuracy is improved, but the complexity of the authentication process increases
Solution Approach 1:
The authentication process is segmented into distinct phases: detecting individual utterance periods, extracting voice signals from each period, comparing signals chronologically, and making authentication decisions. This segmentation allows the system to handle complex multi-period analysis through manageable, sequential steps rather than overwhelming simultaneous processing
Data Source
AI summary
An authentication device includes an acquisition unit configured to acquire a voice signal of a speaker; a detection unit configured to detect a first utterance period during which the speaker is speaking; and an authentication unit configured to authenticate the speaker based on a comparison between a voice signal of the first utterance period and a database. The detection unit detects a second utterance period different from the first utterance period when the authentication unit determines that the speaker authentication is impossible, and the authentication unit authenticates the speaker based on a comparison between the voice signal of the first utterance period and a voice signal of the second utterance period, and the database.