Multi-Channel Acoustic Processing with Integrated Reverberation Matrix
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Solution Overview
Problem
Conventional multi-channel acoustic signal processing devices face significant arithmetic operation loads, particularly in the pre-matrix and post-matrix processing units, which increase processing complexity and resource requirements.
Innovation Solution
The proposed multi-channel acoustic signal processing device reduces arithmetic operation loads by generating a decorrelated signal with reverberation and performing matrix operations using an integrated matrix that combines signal intensity level and reverberation distribution, allowing for simultaneous processing of these operations without separating them, thereby downsizing the device and reducing memory capacity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If separate pre-matrix and post-matrix processing units are used to process signal intensity level and reverberation distribution, then processing accuracy is improved, but device complexity and arithmetic operation loads increase
Solution Approach 1:
The patent combines the pre-matrix processing unit and post-matrix processing unit into a single integrated processing unit. This unit performs both signal intensity level processing and reverberation distribution processing through unified matrix operations, reducing device complexity and arithmetic operation loads while maintaining processing accuracy through coordinated execution of both functions within the same processing architecture
2Measurement precision
If separate pre-matrix and post-matrix processing units are used to process signal intensity level and reverberation distribution, then processing completeness is improved, but arithmetic operation loads increase
Solution Approach 1:
The patent merges the processing of signal intensity level and reverberation distribution into a single processing pipeline that executes both operations simultaneously through unified matrix computations. This integration eliminates redundant operations and reduces the total arithmetic operation load while ensuring both processing functions are completed with full accuracy
Solution Approach 2:
The processing unit performs preliminary organization of matrix data structures and preprocessing of input signals before executing the main processing operations. By preparing data in advance and organizing computation sequences optimally, the system reduces the arithmetic operation load during actual processing while maintaining complete processing of both signal intensity and reverberation characteristics
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach effectively reduces arithmetic operation loads while maintaining sound quality and processing efficiency, without deforming bitstream syntax or causing recognizable deterioration in sound quality.
Implementation Method 1
a decorrelated signal generation unit operable to generate a decorrelated signal by performing reverberation processing on the input signal, the decorrelated signal indicating a sound which includes a sound indicated by the input signal and reverberation
Data Source
AI summary
Provided is a multi-channel acoustic signal processing device by which loads of arithmetic operations are reduced. The multi-channel acoustic signal processing device includes: a decorrelated signal generation unit, and a matrix operation unit and a third arithmetic unit. The decorrelated signal generation unit generates a decorrelated signal w′ indicating a sound which includes a sound indicated by an input signal x and reverberation, by performing reverberation processing on the input signal x. The matrix operation unit and the third arithmetic unit generate audio signals of m channels, by performing arithmetic operation on the input signal x and the decorrelated signal w′ generated by the decorrelated signal generation unit, using a matrix R3 which indicates distribution of a signal intensity level and distribution of reverberation.