Audio Signal Processing for Dynamic Speaker Location Adaptation
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Solution Overview
Problem
Audio systems face challenges in providing high-quality audio signals when speaker locations change, as existing technologies process audio signals based on fixed speaker positions rather than current locations, leading to suboptimal sound distribution and direction recognition.
Innovation Solution
An adaptive audio signal processing method that acquires speaker location and performance information, selects appropriate frequency bands, applies gain values, and adjusts parameters such as gain and delay time based on listener position, to optimize sound image localization and direction recognition.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If audio signals are processed based on fixed speaker positions, then the processing is simple and stable, but the audio quality deteriorates when speaker locations change
Solution Approach 1:
The patent implements dynamic audio signal processing by continuously tracking speaker location information and adapting processing parameters (frequency band selection, gain values, panning gains) based on real-time speaker positions. The system transitions from static fixed-position processing to dynamic location-adaptive processing, ensuring high audio quality regardless of speaker mobility.
Solution Approach 2:
The system employs feedback mechanisms by acquiring location information of speakers and using this information to adjust audio signal processing parameters. The processed audio signal quality is continuously optimized based on feedback from speaker location data, creating a closed-loop system that maintains reliability despite position changes.
2Adaptability or versatility
If speaker locations are made mobile for flexibility, then the adaptability improves, but the audio signal processing accuracy deteriorates
Solution Approach 1:
The system performs preliminary acquisition of speaker location information before audio signal processing. By obtaining location data in advance and using it to pre-calculate processing parameters (frequency bands, gain values, delay times), the system ensures accurate sound image localization even when speakers are mobile.
Solution Approach 2:
The patent dynamically changes processing parameters (frequency band selection, gain values, panning gains, delay times) based on speaker location information. This parameter adaptation maintains measurement precision and sound image accuracy despite speaker mobility by adjusting the processing characteristics to match current speaker positions.
3Measurement precision
If audio signals are processed without considering current speaker locations, then the processing is straightforward, but the direction recognition accuracy deteriorates
Solution Approach 1:
The system applies local quality enhancement by selecting specific frequency bands for processing based on speaker location. Different frequency ranges are emphasized or de-emphasized depending on the speaker's position relative to the listener, improving direction recognition accuracy through location-specific spectral processing.
Solution Approach 2:
The processing algorithm dynamically adapts to speaker locations by continuously adjusting frequency band selection, gain application, and panning calculations. This dynamic approach maintains high direction recognition accuracy as speakers move, despite the increased computational complexity.
Data Source
AI summary
A method of processing an audio signal is provided. The method includes acquiring location information and performance information of a speaker configured to output an audio signal, selecting a frequency band based on the location information, determining a section to be strengthened from the selected frequency band with respect to the audio signal based on the performance information, and applying a gain value to the determined section.