Voice Recognition Apparatus with Real-Time Level Feedback
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Solution Overview
Problem
Existing voice recognizing systems fail to accurately determine a suitable voice level under varying noise conditions and do not allow operators to confirm voice levels without looking at a display, making it difficult to maintain appropriate voice input for effective voice command operations.
Innovation Solution
A voice recognizing apparatus that includes a sound input unit, noise level calculating unit, voice level calculating unit, and necessary voice level calculating unit, which also displays voice levels and reliability information to help operators adjust their voice levels based on noise conditions, using a system that calculates voice and noise levels, and determines a necessary voice level based on these factors and reliability of conversion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If voice recognition is performed without displaying voice level information, then the system is simpler and easier to operate, but operators cannot accurately determine suitable voice levels under varying noise conditions
Solution Approach 1:
The system calculates and displays the current voice level to the operator, providing real-time feedback about their voice input. This allows operators to adjust their voice levels appropriately based on the displayed information, achieving accurate voice level determination through operator awareness rather than complex automatic control systems.
Solution Approach 2:
The system provides voice level information to the operator, enabling them to self-adjust their voice input without requiring complex automatic voice level control. The operator uses the displayed information to serve their own need for appropriate voice level adjustment, simplifying the overall system while achieving the desired measurement precision.
2Reliability
If voice level display is continuously updated, then operators can maintain appropriate voice input, but it requires additional processing and display resources
Solution Approach 1:
The system performs voice level calculation and display updates selectively rather than continuously at maximum frequency. By updating the display at appropriate intervals or only when voice level changes exceed a threshold, the system maintains sufficient information for reliable voice command operations while reducing unnecessary processing load and display refresh overhead.
Data Source
AI summary
A voice recognizing apparatus includes a sound input unit, a voice level calculating unit, a noise level calculating unit, a character converting unit, a reliability calculating unit, and a necessary voice level calculating unit. The sound input unit is configured to receive electrical signals as voice and noise signals converted from voice of a talker and noise in environment, respectively. The voice level calculating unit and the noise level calculating unit are configured to calculate, as voice and noise levels, levels of the voice and noise signals, respectively. The character converting unit is configured to perform conversion of a waveform of the electric signal as the voice signal into a character string. The reliability calculating unit is configured to calculate reliability of the conversion. The necessary voice level calculating unit is configured to calculate a necessary voice level on the basis of the voice and noise levels and the reliability.