Sound Signal Processing System for Speech Recognition Accuracy
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Solution Overview
Problem
Sound signal processing, such as echo removal, can adversely affect the accuracy of speech recognition processing, particularly when non-linear signal processing is applied.
Innovation Solution
A sound signal processing system that includes a sound signal processing apparatus and an information processing apparatus communicatively connected to execute non-linear signal processing on collected sound signals, transmitting both pre-execution and post-execution sound signals to allow for different processing methods, ensuring that speech recognition is not compromised.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If non-linear signal processing is applied to remove noise and echo from sound signals, then noise removal and echo cancellation effectiveness is improved, but speech recognition accuracy deteriorates
Solution Approach 1:
The patent divides the sound signal into two separate processing paths: one path applies non-linear signal processing for noise and echo removal, while the other path preserves the original signal for speech recognition. This segmentation allows each path to be optimized for its specific purpose without compromising the other.
Solution Approach 2:
The patent applies different processing qualities to different uses of the same sound signal. The processed signal with enhanced noise and echo removal is used for applications requiring clarity, while the original unprocessed signal is retained for speech recognition tasks where preserving all original information is critical.
Data Source
AI summary
A sound signal processing system includes: a sound signal processing apparatus executing non-linear signal processing on a collected sound signal collected by a microphone, and transmitting, to an information processing apparatus, both a pre-execution sound signal before the non-linear signal processing is executed and a post-execution sound signal after the non-linear signal processing is executed; and the information processing apparatus receiving the pre-execution sound signal and the post-execution sound signal from the sound signal processing apparatus, and executing first processing on the pre-execution sound signal and executing second processing on the post-execution sound signal, the second processing being different from the first processing.