Sound Signal Processing Apparatus Respirator Interference Correction
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Solution Overview
Problem
Respirators interfere with sound wave transmission, reducing the accuracy of voice identification systems due to their impact on sound signal frequency response.
Innovation Solution
A processing apparatus and method that identifies the type of respirator and modifies the sound signal accordingly, using a processor and memory to generate a compensation signal that corrects for the interference caused by different respirator types, thereby restoring the original sound signal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a respirator is worn to prevent inhalation of harmful components, then health protection is improved, but the accuracy of voice identification deteriorates due to sound wave interference
Solution Approach 1:
The system changes the parameters of the sound signal by applying frequency domain filtering and amplification. Different respirator types are compensated for using different frequency response curves, adjusting the gain at different frequencies to restore the original voice signal characteristics
Solution Approach 2:
A compensation signal is introduced as an intermediary element. This compensation signal, generated based on the identified respirator type, is added to the distorted sound signal to counteract the interference and restore the original voice signal
2Device complexity
If standard voice identification is used without respirator compensation, then system simplicity is maintained, but voice identification accuracy deteriorates when respirators are worn
Solution Approach 1:
The compensation process is segmented into distinct steps: respirator type identification, selection of corresponding compensation signal, and signal processing. This modular approach allows the system to add functionality without creating a monolithic complex system
Solution Approach 2:
The system dynamically adapts to different respirator types by identifying the specific type worn and applying the appropriate compensation parameters. The compensation is not fixed but adjusts based on real-time detection of the respirator type
Data Source
AI summary
A processing apparatus and a processing method of a sound signal are provided. In the method, the sound signal is received. A respirator type is identified. The sound signal is modified according to the respirator type. The respirator type is a type of a respirator corresponding to the sound signal. Accordingly, the distortion may be corrected and the accuracy of voice identification may be improved.