Audio Processing System Spatiality Enhancement via Phase Control
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Solution Overview
Problem
Conventional audio processing methods fail to effectively enhance the spatiality and stereoscopic effect of audio signals, limiting the immersive auditory experience.
Innovation Solution
An audio processing method and system that transforms mono or stereo audio signals into optimized left and right channel signals by using panning angle curves, left and right channel separation curves, and inverse transformation processes to control panning angles and phase spectra, resulting in a more spatial and stereoscopic audio output.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional audio processing methods are used, then the processing is simple, but the spatiality and stereoscopic effect of audio signals cannot be enhanced
Solution Approach 1:
The audio signal processing is segmented into distinct frequency bands using Fast Fourier Transform, allowing independent processing of different frequency components. This enables precise control over spatial characteristics at each frequency band while maintaining overall system manageability through modular processing stages.
Solution Approach 2:
The patent transitions from mono audio signals to stereo audio signals by introducing a spatial dimension. Through panning angle curves and phase spectrum manipulation, the audio signal gains left-right channel separation, creating a three-dimensional auditory experience from traditionally two-dimensional sound.
2Manufacturing precision
If stereo processing is implemented, then the auditory scene is improved, but the processing complexity increases
Solution Approach 1:
The patent manipulates key parameters including panning angles, phase spectra, and frequency components to achieve enhanced auditory scenes. By systematically adjusting these parameters through curves and transformation processes, the system achieves precise control over stereo imaging without requiring overly complex processing architectures.
Solution Approach 2:
Panning angle curves and separation curves are pre-defined and stored in the system. These curves perform preliminary processing by establishing the spatial distribution pattern before the actual audio signal processing occurs, reducing real-time computational complexity while maintaining high auditory scene precision.
3Manufacturing precision
If frequency domain transformation is applied, then the panning and phase control is improved, but the processing time increases
Solution Approach 1:
The audio processing employs frame-based periodic processing where the audio signal is divided into discrete time frames. Fast Fourier Transform is applied periodically to each frame, enabling efficient frequency domain analysis and panning control while maintaining acceptable processing throughput through batch operation and overlapping frame processing.
Data Source
AI summary
An audio processing method includes: providing an input audio signal; performing a transformation process to transform the input audio signal from a time domain to a frequency domain; performing a panning process on an amplitude spectrum corresponding to the input audio signal to obtain a panning amplitude signal; performing a first broader process and a second broader process on a phase spectrum corresponding to the input audio signal to obtain a left channel separation phase signal and a right channel separation phase signal; performing a first inverse transformation process on the panning amplitude signal and the left channel separation phase signal and performing a second inverse transformation process on the panning amplitude signal and the right channel separation phase signal to obtain an optimized left channel output audio signal and an optimized right channel output audio signal corresponding to the time domain.