Voice Activity Detection With Volume Feedback for Noisy Speech Input
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Solution Overview
Problem
Existing voice-to-text conversion systems face accuracy issues in outdoor environments with background noise due to inappropriate gain settings and inability to confirm actual microphone sound, leading to inaccurate voice output.
Innovation Solution
A voice activity detection device and method that includes a voice pickup module, processing module, and prompt module to adjust volume thresholds and generate prompt messages for volume adjustments, ensuring accurate voice-to-text conversion in noisy conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the gain value is set inappropriately or processed by a predetermined built-in control unit, then the volume can be controlled, but the original volume cannot be restored and the accuracy of voice output is affected
Solution Approach 1:
The system performs preliminary voice activity detection and volume assessment before voice-to-text conversion. The processing module detects whether voice is being received and evaluates the volume value, generating prompt messages to guide users to adjust volume before conversion occurs, ensuring optimal conditions are established in advance
Solution Approach 2:
The system implements a feedback mechanism where the processing module continuously monitors volume values and generates prompt messages based on detected levels. When volume is insufficient, the system provides feedback through prompt messages requesting volume adjustment, creating a closed-loop control system that maintains optimal volume levels for accurate conversion
2Ease of operation
If gain processing is applied by a built-in control unit, then volume adjustment is achieved, but voice-to-text conversion accuracy decreases in outdoor environments with background noise
Solution Approach 1:
The system dynamically adjusts volume thresholds based on real-time voice activity detection. The processing module evaluates volume values relative to dynamically determined thresholds and generates appropriate prompt messages, allowing the system to adapt to varying acoustic conditions including outdoor environments with background noise
Solution Approach 2:
The system changes the parameter of volume threshold values based on detected voice activity and environmental conditions. The processing module compares volume values against thresholds and generates prompt messages to adjust parameters, enabling adaptation to different acoustic environments and maintaining conversion accuracy
Data Source
AI summary
A voice activity detection method includes a voice pickup module, a processing module coupled to the voice pickup module and a prompt module coupled to the processing module. The processing module is used to perform a voice activity detection method, including: receiving voice information by the voice pickup module; acquiring a volume value of the voice information by the processing module; determining by the processing module whether the volume value is less than or equal to a first volume threshold; when it is determined that the volume value is less than or equal to the first volume threshold, generating by the prompt module a first prompt message for increasing the volume value; and when it is determined that the volume value is more than the first volume threshold, generating by the prompt module a second prompt message that indicates a volume value standard has been satisfied.