Tactile Signal Modulation Frequency Control for Perceptual Quality
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Solution Overview
Problem
Existing techniques for tactile presentation fail to account for perceptual quality deterioration and differences in tactile perception characteristics due to modulation, leading to unintended auditory noise and impaired user experience.
Innovation Solution
An information processing apparatus that determines a modulation frequency based on tactile perception characteristics, non-modulated signal information, and user state to perform modulation, thereby encoding a content signal with site-specific modulation intensity and generating an encoded signal to minimize perceptual degradation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If amplitude modulation is applied to improve driving efficiency and reduce auditory noise, then driving efficiency is improved and auditory noise is reduced, but perceptual degradation occurs due to changes in tactile sense
Solution Approach 1:
The patent applies parameter changes by dynamically adjusting the modulation frequency based on the content signal characteristics and tactile perception characteristics. Instead of using a fixed modulation frequency, the system varies the modulation frequency parameter to match the signal being presented, thereby maintaining driving efficiency while avoiding perceptual degradation. This is achieved through the frequency determination unit that selects optimal modulation frequencies based on signal analysis.
2Productivity
If modulation frequency is determined based only on resonance characteristic or sensitivity peak, then driving efficiency is improved, but tactile perception quality deteriorates due to ignoring perceptual characteristics
Solution Approach 1:
The patent implements feedback by incorporating tactile perception characteristics into the modulation frequency determination process. The system analyzes the content signal and compares it against known tactile perception characteristics to determine the optimal modulation frequency. This feedback mechanism ensures that the modulation frequency is selected to maintain both driving efficiency and tactile perception quality, rather than relying solely on resonance characteristics.
3Adaptability or versatility
If amplitude modulation is used to absorb characteristic differences of tactile presentation apparatus, then adaptability is improved, but unintended auditory noise is generated
Solution Approach 1:
The patent uses parameter changes by adjusting the modulation frequency based on the specific tactile presentation apparatus being used and the content signal characteristics. This allows the system to adapt to different apparatus while minimizing auditory noise generation. The frequency determination unit selects modulation frequencies that are optimal for the specific apparatus and signal type, thereby maintaining adaptability while reducing harmful auditory effects.
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
The solution effectively suppresses perceptual degradation by optimizing modulation frequency and intensity, reducing noise, and enhancing driving efficiency while maintaining intended tactile sensations.
Implementation Method 1
amplitude modulation that modulates a high frequency band to a resonance frequency of the tactile presentation apparatus or a sensitivity peak of a human
Implementation Method 2
an apparatus worn by a user vibrates to give a tactile stimulus to the user
Data Source
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AI summary
The present technology relates to an information processing apparatus, a method, and a program capable of suppressing perceptual degradation due to modulation. The information processing apparatus determines a modulation frequency of a content signal on the basis of at least any one of a tactile perception characteristic for each presentation site, information regarding a non-modulated signal that is not modulated, and a user state, and performs modulation on the content signal using the modulation frequency. The present technology can be applied to a tactile presentation system of a tactile signal.