Vibration Signal Modulation for Sounds Without Low Frequencies

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Solution Overview

Problem

Existing methods fail to generate vibration based on sounds lacking a low-frequency component.

Innovation Solution

A vibration signal generation device that derives envelope information from sound signals and performs frequency and amplitude modulation on a basic signal with constant frequency and amplitude to generate vibration signals.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If low-frequency extraction method is used to generate vibration from sound, then vibration can be generated from sounds with low-frequency components, but vibration cannot be generated from sounds without low-frequency components

Engineering Contradiction:

Improveapplicability to different sound typesVSAvoidvibration generation capability

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The patent transforms the vibration generation approach by changing from direct low-frequency extraction to envelope information extraction combined with frequency and amplitude modulation. This parameter change enables the system to handle both sounds with and without low-frequency components uniformly, resolving the contradiction between adaptability and reliability

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent introduces envelope information as an intermediary between the sound signal and the vibration output. By extracting envelope information and using it for frequency and amplitude modulation of a basic signal, the system can generate vibration from any sound type, not just those with low-frequency components

Inventive Principle:

Principle #24Intermediary (Mediator)

2Ease of manufacture

If vibration is generated based on low-frequency region extraction, then the method is simple to implement, but it fails for sounds without low-frequency components

Engineering Contradiction:

Improveimplementation simplicityVSAvoidcompatibility with all sound types

Core Design Contradiction:

Ease of manufactureVSAdaptability or versatility

Solution Approach 1:

The patent segments the vibration generation process into distinct functional modules: envelope information extraction, frequency modulation, and amplitude modulation. This segmentation maintains implementation simplicity while enabling universal applicability to different sound types

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent creates a universal vibration generation system that can process any sound type through multi-functional processing: envelope extraction, frequency modulation, and amplitude modulation. This universal approach replaces the limited low-frequency extraction method while maintaining ease of implementation

Inventive Principle:

Principle #6Universality (Multi-functionality)

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

Enables the generation of non-monotonous vibration signals based on sounds without low-frequency components, enhancing user experience and emotional response through synchronized or delayed vibration patterns.

Implementation Method 1

a vibration signal generation unit that performs a frequency modulation and an amplitude modulation based on the envelope information on a basic signal of waves having constant frequency and amplitude, and generates the vibration signal

Methodology Applied

Scientific EffectFrequency modulation: Phase Modulation

Implementation Method 2

Methodology Applied

Scientific EffectAmplitude modulation: Phase Modulation

Data Source

PatentUS12518734B2Vibration signal generation device

Publication Date: 2026.01.06 PIONEER IP

AI summary

Vibration based on a sound is generated even in a case where the sound does not have a component of a low-frequency region. Envelope information regarding an envelope of a sound signal is derived, a frequency modulation and an amplitude modulation based on the envelope information are performed on a basic signal of waves having constant frequency and constant amplitude, and a vibration signal for vibrating a vibration generation device is generated.