Voice Input Device Dynamic Period Adjustment
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Solution Overview
Problem
Existing voice input systems face challenges in accurately determining the voice activity period, leading to inaccuracies in voice recognition, especially when the user's operation on the touch icon does not synchronize with the utterance timing, resulting in premature or delayed end points of voice activity periods.
Innovation Solution
A voice input device and method that include an input unit, storage unit, and controller, which acquire and store voice data and adjust the voice activity period based on user operations on an operation unit, allowing real-time adjustment of the end point through slide operations to synchronize with the utterance timing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the voice activity period is determined based on a simple switch operation, then the ease of operation is improved, but the measurement precision of the voice activity period deteriorates
Solution Approach 1:
The patent makes the voice activity period dynamically adjustable after initial determination. The controller allows users to modify the determined period through subsequent operations, transforming a static determination into a dynamic adjustment process that resolves the contradiction between simple operation and precise measurement
Solution Approach 2:
The system provides feedback by displaying the determined voice activity period to the user and allowing modifications based on actual utterance timing observation. This feedback loop enables users to refine the measurement precision while maintaining ease of operation through intuitive adjustme
2Productivity
If the voice activity period is determined immediately upon switch operation, then the productivity is improved, but the reliability of voice recognition deteriorates
Solution Approach 1:
The system performs preliminary determination of the voice activity period based on the switch operation, then allows for subsequent adjustment. This preliminary action maintains productivity by providing immediate functionality while the adjustment capability ensures reliability by correcting any timing inaccuracies before final recognition
Solution Approach 2:
The voice activity period transitions from a fixed predetermined value to a dynamically adjustable parameter. The controller enables modification of the period based on actual utterance timing, allowing the system to adapt between speed of operation and accuracy of recognition timing
3Reliability
If the detection range is set wider to capture the beginning of utterance, then the reliability is improved, but the measurement precision of the end point deteriorates
Solution Approach 1:
The patent segments the voice activity period determination into two distinct phases: initial detection phase that uses a wide range to reliably capture the utterance beginning, and refinement phase that precisely determines the end point. This segmentation allows each phase to optimize for its specific purpose without compromise
Solution Approach 2:
The detection range dynamically changes during the determination process. The controller initially uses a wider detection range to ensure reliable capture of the utterance start, then transitions to a more precise measurement mode for determining the end point, adapting the range based on the determination stage
Data Source
AI summary
A voice input device includes an input unit, a storage unit, an operation unit, and a controller. The input unit acquires a voice and generates voice data corresponding to the voice. The storage unit stores the voice data inputted from the input unit. The operation unit is operated by a user. The controller determines a voice activity period in which voice recognition is performed on the voice data stored in the storage unit based on a user's operation on the operation unit. Then, upon detecting a predetermined operation on the operation unit made by the user, the controller adjusts the determined voice activity period.