Haptic Feedback Signal Generation via Frequency Domain Harmonic Adjustment
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Solution Overview
Problem
Existing haptic feedback technologies require a long time to design multiple haptic feedback signals and result in limited, single haptic feedback effects, lacking richness and quickness in design.
Innovation Solution
A method involving the conversion of initial haptic feedback signals from the time domain to the frequency domain, adjustment of amplitude values in the frequency domain to create a target spectrogram, and subsequent conversion back to the time domain to generate diverse haptic feedback signals, enhancing richness and speed of design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If designers manually design haptic feedback signals in advance, then the haptic feedback effects can be customized, but the design process requires relatively long time and has poor quickness
Solution Approach 1:
The patent applies parameter changes by modifying the amplitude values of harmonic components in the frequency domain of haptic feedback signals. By adjusting these parameters (amplitude values of different frequency bands), the system generates diverse haptic feedback effects from a single initial signal, eliminating the need for manual design of each effect while maintaining customization capability.
Solution Approach 2:
The patent uses copying by taking one initial haptic feedback signal and generating multiple variations through frequency domain processing. Instead of designing each haptic effect separately, the system creates copies with modified harmonic components, significantly improving design productivity while preserving effect diversity.
2Adaptability or versatility
If designers manually design multiple haptic feedback signals, then the haptic feedback effects can be diverse, but the design process requires relatively long time
Solution Approach 1:
The patent efficiently generates diverse haptic feedback effects by changing parameters (amplitude values of harmonic components) in the frequency domain. This approach produces varied effects without requiring lengthy manual design processes, significantly reducing the time lost in design while maintaining effect diversity.
Solution Approach 2:
The system creates multiple haptic feedback signals by copying and transforming a single initial signal through frequency domain processing. This copying approach with parameter modification generates diverse effects rapidly, eliminating the time-consuming manual design of each individual signal.
3Ease of operation
If haptic feedback signals are stored in advance with different effects, then the feedback effects can be selected based on trigger instructions, but the haptic feedback has a single effect and is not highly abundant
Solution Approach 1:
The patent overcomes the limitation of single-effect haptic feedback by applying parameter changes to the stored signals. By dynamically adjusting the amplitude values of harmonic components based on different scenarios, the system generates abundant varied effects from a limited set of stored signals, maintaining ease of selection while dramatically increasing feedback abundance.
Solution Approach 2:
The patent introduces dynamics by transforming static stored haptic feedback signals into dynamic, adaptable effects. Through real-time frequency domain processing and parameter adjustment, the system makes the haptic feedback abundant and varied based on different operational contexts, while maintaining the ease of selecting from stored signal templates.
Data Source
AI summary
Provided are a method for generating a haptic feedback signal, an electronic device, and a storage medium. The method includes: acquiring an initial haptic feedback signal; mapping an initial haptic feedback signal from a time domain to a frequency domain to obtain an initial spectrogram of the initial haptic feedback signal in the frequency domain; adjusting an amplitude value of a harmonic component of any frequency band in the initial spectrogram to obtain a target spectrogram; and mapping a signal corresponding to the target spectrogram from the frequency domain to the time domain to obtain a target haptic feedback signal. In the present application, a large number of haptic feedback signals with different haptic feedback effects may be obtained by adjusting the amplitude value of the harmonic component of any frequency band in the initial spectrogram, thereby effectively improving the richness of the haptic feedback signals.