Wireless Sound Box Equalizer Configuration for Speech Recognition
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Solution Overview
Problem
Existing wireless sound boxes face a trade-off between improved sound quality and speech recognition accuracy, as enhancing sound quality often leads to increased nonlinear output and vibration, which interferes with speech frequency bands, resulting in low speech recognition accuracy.
Innovation Solution
A method for configuring a wireless sound box that acquires information on its wakeup mode, adjusting the equalizer parameters accordingly: in speech wakeup mode, it regulates nonlinear distortion by setting specific gain values for certain frequencies, and in non-speech wakeup mode, it adjusts gains for optimal sound effect, thereby reducing interference and enhancing recognition accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the low frequency band is enhanced to improve sound quality, then the sound quality is improved, but the nonlinear output is increased causing vibration and harmonics that affect speech frequency band, resulting in low speech recognition accuracy
Solution Approach 1:
The patent applies dynamics by making the equalizer parameters adjustable based on different wakeup modes. The system dynamically switches between first equalizer parameters (optimized for speech recognition with reduced low frequency gain) and second equalizer parameters (optimized for sound quality with enhanced low frequency gain) according to the detected wakeup mode, allowing the system to adapt its frequency response characteristics to different operational contexts.
Solution Approach 2:
The patent directly applies parameter changes by modifying the equalizer parameters (specifically the gain values for different frequency bands) based on the wakeup mode. When speech wakeup mode is detected, the system applies a first set of equalizer parameters that reduce low frequency gain to minimize nonlinear distortion and vibration. When non-speech wakeup mode is detected, the system applies a second set of equalizer parameters that enhance low frequency gain for improved sound quality.
2Measurement precision
If equalizer parameters are adjusted to reduce nonlinear distortion for speech recognition, then speech recognition accuracy is improved, but the output sound effect is compromised
Solution Approach 1:
The system dynamically adjusts equalizer parameters based on the detected wakeup mode. When speech wakeup mode is detected, the system switches to first equalizer parameters optimized for speech recognition accuracy. When non-speech wakeup mode is detected, the system switches to second equalizer parameters optimized for output sound effect, allowing the system to adapt its characteristics to different operational contexts.
Solution Approach 2:
The patent applies parameter changes by switching between different sets of equalizer parameters based on wakeup mode. The first equalizer parameters are configured with reduced low frequency gain to minimize nonlinear distortion and improve speech recognition. The second equalizer parameters are configured with enhanced low frequency gain to improve sound quality and output sound effect.
Data Source
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AI summary
A method for configuring a wireless sound box includes acquiring information of a wakeup mode of a wireless sound box, where the wakeup mode comprises: a speech wakeup mode and a non-speech wakeup mode; and configuring an equalizer parameter of the wireless sound box according to the information of the wakeup mode, where said configuring an equalizer parameter of the wireless sound box according to the information of the wakeup mode comprises: configuring, under the speech wakeup mode, the equalizer parameter to be a first mode parameter for regulating a nonlinear distortion, and configuring, under the non-speech wakeup mode, the equalizer parameter into a second mode parameter for regulating an output sound effect. The accuracy of speech recognition is improved while improving the sound quality of the wireless sound box, thereby being adapted to the needs of different application scenarios and possessing high practicality and usability.