Non-Steady Sound Waveform Extraction for Accurate Audio Analysis

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Solution Overview

Problem

Non-steady sounds, which include noise and ambient environmental sounds, often reduce the accuracy of analysis when used to analyze target objects, and extracting target sounds from these sounds requires significant effort.

Innovation Solution

An information processing method and device that acquires sound data, presents non-steady sound waveforms, allows user input of target ranges, and automatically extracts similar ranges from the sound data, reducing the user's extraction effort by identifying and combining target and similar sound ranges.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If non-steady sound is used to analyze the target object, then the analysis can be performed, but the analysis accuracy is low due to noise and ambient environmental sounds

Engineering Contradiction:

Improveanalysis accuracyVSAvoidnoise and ambient environmental sounds

Core Design Contradiction:

Measurement precisionVSObject-affected harmful factors

Solution Approach 1:

The patent extracts the target sound from non-steady sound by displaying the waveform and allowing users to select target ranges, then automatically extracting similar ranges. This separates the useful target sound from the harmful noise and ambient sounds, resolving the contradiction between being able to perform analysis and maintaining analysis accuracy.

Inventive Principle:

Principle #2Taking out (Extraction)

2Measurement precision

If target sound is extracted from non-steady sound manually, then analysis accuracy can be improved, but enormous effort is required

Engineering Contradiction:

Improveanalysis accuracyVSAvoidextraction effort

Core Design Contradiction:

Measurement precisionVSEase of operation

Solution Approach 1:

The patent uses waveform display to create a visual copy of the sound data, allowing users to easily identify and select target ranges without manually processing the raw sound data. The system then automatically extracts similar ranges based on the selected waveform portion, significantly reducing the effort required while maintaining high extraction accuracy.

Inventive Principle:

Principle #26Copying

Solution Approach 2:

The patent replaces manual mechanical extraction processes with automatic computational extraction. The system automatically identifies similar ranges in the waveform and extracts corresponding sound portions, substituting manual effort with automated algorithms while preserving analysis accuracy.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

3Ease of operation

If automatic extraction of target sound is implemented, then user effort is reduced, but the system complexity increases

Engineering Contradiction:

Improveextraction effortVSAvoidsystem complexity

Core Design Contradiction:

Ease of operationVSDevice complexity

Solution Approach 1:

The patent introduces a waveform display as an intermediary between the raw sound data and the extraction process. This intermediate representation makes the sound data visually interpretable and easier to work with, allowing automatic extraction algorithms to function effectively without requiring complex direct processing of raw audio signals.

Inventive Principle:

Principle #24Intermediary (Mediator)

Data Source

PatentUS20260104287A1Information processing method, information processing device, and recording medium

Publication Date: 2026.04.16 PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD

AI summary

An information processing method is executed by a computer and includes: acquiring sound data obtained by picking up a sound emitted from a target object; when the sound data contains a non-steady sound, presenting a waveform of the non-steady sound; acquiring an input of a target range to be extracted in the waveform of the non-steady sound presented; and extracting, from the sound data, one or more similar ranges that each contain a waveform similar to a waveform of the target range acquired.