Sound Zone Amplitude Calculation via Selective Signal Storage
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Solution Overview
Problem
Conventional on-vehicle speech recognition systems face inaccuracies and high computational costs when determining the amplitude of sound zones due to the interference of speech signals across multiple zones, leading to incorrect activation of functions and inefficient resource usage.
Innovation Solution
A method and device for selectively storing and calculating the amplitude of audio signals in real-time by comparing the amplitude of current audio signals with stored signals, allowing only significant signals to be stored and reducing unnecessary calculations, thereby improving accuracy and resource efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If all audio signals are stored and processed to calculate sound zone amplitude, then measurement precision is improved, but device complexity and computational cost increase
Solution Approach 1:
The patent extracts only the maximum amplitude value from all audio signals in the sound zone, rather than processing and storing all signals. This is achieved by comparing each audio signal's amplitude with the current maximum and updating only when a larger amplitude is found, thereby simplifying the computational process while maintaining measurement precision.
Solution Approach 2:
The patent changes the processing approach from storing and calculating all audio signal parameters to tracking only the maximum amplitude parameter. This parameter transformation reduces the computational burden from processing multiple signals to maintaining a single maximum value, resolving the contradiction between precision and complexity.
2Adaptability or versatility
If speech signals from multiple sound zones are processed together, then comprehensive coverage is improved, but measurement precision deteriorates due to signal interference
Solution Approach 1:
The patent segments the vehicle interior into four distinct sound zones (front, rear, left, right) with separate microphones for each zone. By processing audio signals from each segmented zone independently and identifying the zone with the maximum amplitude, the system achieves both comprehensive coverage and precise identification without cross-zone interference.
3Measurement precision
If all audio signals are stored for analysis, then measurement precision is improved, but loss of substance increases due to excessive data storage
Solution Approach 1:
The patent extracts only the essential information (maximum amplitude value) from the audio signals rather than storing the complete signal data. By maintaining only the maximum amplitude and its corresponding sound zone identification, the system achieves accurate amplitude determination while minimizing data storage requirements.
Data Source
AI summary
Embodiments of the present disclosure disclose a method and a device for obtaining an amplitude for a sound zone, a related electronic device and a storage medium. The method includes the following. Speech data of a target sound zone is obtained in real time. The speech data includes audio signals corresponding to a plurality of sampling points. The audio signals are stored by comparing an amplitude of a current audio signal to be stored with an amplitude of each stored audio signal to determine whether to store the current audio signal according to a comparison result. A current amplitude for the target sound zone is calculated according to amplitudes of all stored audio signals.