Haptic Signal Encoding Using Band Separation and Masking Redundancy
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Solution Overview
Problem
Existing haptic signal encoding methods suffer from low compression rates due to information redundancy caused by masking effects between adjacent signals when encoding single-point haptic signals individually.
Innovation Solution
A method involving low-pass filtering to separate low-frequency and high-frequency components of haptic signals, followed by masking processing using specific models to encode these components, and block processing to remove redundancy, enhancing compression efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If single-point haptic signals are encoded one by one, then encoding simplicity is maintained, but compression rate deteriorates due to information redundancy from masking effects
Solution Approach 1:
The haptic signal is divided into multiple frequency bands through filtering operations. The original haptic signal is separated into a first haptic signal (lower frequency components) and a second haptic signal (higher frequency components), allowing independent processing and encoding of each band to reduce redundancy while maintaining simplicity
Solution Approach 2:
The masking effect is extracted and utilized as a processing principle. By identifying which signal components mask others based on frequency relationships, the encoding process selectively processes only non-masked components, thereby reducing information redundancy while maintaining encoding simplicity
2Loss of information
If frequency-based signal separation is performed, then compression efficiency is improved, but processing complexity increases
Solution Approach 1:
Different processing approaches are applied to different frequency bands. The first haptic signal (lower frequencies) and second haptic signal (higher frequencies) undergo distinct filtering and masking operations tailored to their specific characteristics, optimizing compression efficiency for each band while managing overall processing complexity
Solution Approach 2:
Frequency-based filtering and signal separation are performed in advance before the main encoding process. By pre-separating the haptic signal into frequency bands and pre-identifying masking relationships, the subsequent encoding process becomes more efficient with reduced complexity
Data Source
AI summary
This application discloses a haptic signal encoding processing method, a haptic signal decoding processing method, and a related device. The haptic signal encoding processing method in embodiments of this application includes: obtaining at least one of a key frame sequence or a first signal that correspond to each of a plurality of paths of haptic signals, where the key frame sequence is obtained based on a second signal; and performing at least one of the following: performing first masking processing on the key frame sequence based on a first masking model, and encoding a signal obtained through the first masking processing, to obtain a first encoded sequence; and performing second masking processing on the first signal based on a second masking model, and encoding a signal obtained through the second masking processing, to obtain a second encoded sequence.