Virtual Writing Sound Directional Variation

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Solution Overview

Problem

Existing virtual writing sound technologies do not accurately replicate the sound of actual writing, failing to enhance the feeling of writing when inputting characters or paths on a touch panel.

Innovation Solution

A program that generates sound information based on the movement direction of input coordinates, changing volume and pitch to mimic the sound of writing, with a base sound that remains constant regardless of movement direction to prevent volume decrease and maintain a natural writing experience.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If virtual writing sound is changed according to speed of input only, then some variation in sound is achieved, but the feeling of actual writing is not improved

Engineering Contradiction:

Improvefeeling of actual writingVSAvoidsound variation accuracy

Core Design Contradiction:

ReliabilityVSAdaptability or versatility

Solution Approach 1:

The patent changes multiple sound parameters (volume, pitch, tone) based on writing direction angles, not just speed. This multi-parameter approach creates more accurate sound variation that reflects actual writing characteristics, resolving the contradiction between reliability of writing feeling and adaptability of sound variation.

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent introduces direction angle as a new dimension for sound control, moving beyond the single dimension of speed. By adding directional information (0-360 degrees), the system achieves more comprehensive sound variation that accurately represents actual writing, improving both writing feeling and sound adaptability.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

2Adaptability or versatility

If sound volume is changed according to movement direction, then sound variation is improved, but volume may decrease to strange levels

Engineering Contradiction:

Improvesound variationVSAvoidnatural writing experience

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The patent combines direction-based sound variation with speed-based sound variation, merging two control dimensions. This combination ensures that sound changes remain natural and believable by considering both how the pen moves and how fast it moves, preventing strange volume decreases while maintaining adaptability.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The patent adjusts multiple sound parameters (volume, pitch, tone) simultaneously based on direction, rather than changing only volume. This multi-parameter adjustment creates more nuanced sound variation that maintains natural writing experience even when direction changes cause volume variations.

Inventive Principle:

Principle #35Parameter changes

3Reliability

If virtual writing sound closely replicates actual writing sound variations, then writing feeling is improved, but system complexity increases

Engineering Contradiction:

Improvewriting feeling authenticityVSAvoidsound processing complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent applies different sound processing rules to different direction ranges (0-180 degrees vs. 180-360 degrees), with each range having its own tone characteristics. This local quality approach creates authentic writing feelings for different stroke directions while keeping the overall system manageable by dividing the problem into smaller directional segments.

Inventive Principle:

Principle #3Local quality

4Reliability

If sound information is dynamically changed based on input coordinates, then writing immersion is enhanced, but processing requirements increase

Engineering Contradiction:

Improvewriting immersionVSAvoidprocessing power

Core Design Contradiction:

ReliabilityVSPower

Solution Approach 1:

The patent focuses sound processing on the most significant writing characteristics (direction and speed) rather than attempting to replicate all aspects of actual writing. This partial action approach enhances writing immersion by capturing the essential sound variations while avoiding excessive processing requirements for less important details.

Inventive Principle:

Principle #16Partial or excessive action

Data Source

PatentUS11439907B2Audio feedback that varies based on direction of input stroke

Publication Date: 2022.09.13 NINTENDO CO LTD

AI summary

A storage medium storing therein a program, an information processing apparatus, an information processing method, a game system and a mobile device are disclosed. For example, disclosed is a non-transitory storage medium storing therein a program that is readable by a computer of an information processing apparatus, the program being configured to cause the computer to: acquire input coordinates of input performed based on an operation performed by a user; generate drawing information for displaying a path corresponding to the input coordinates on a display apparatus; determine a movement direction of the input based on a change in the input coordinates, which are acquired continuously while the input is performed; generate sound information of a virtual writing sound that is changed based on the movement direction in response to the input coordinates changing; and output the sound information of the virtual writing sound to a speaker.