Speaker Grouping for Acoustic Correction

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Solution Overview

Problem

Correcting the acoustic characteristics of multiple speakers installed in a room is time-consuming and labor-intensive due to varying installation conditions, which affects their output characteristics.

Innovation Solution

Grouping speakers with identical attachment conditions, measuring and calculating their output characteristics, and applying an average correction to each speaker to normalize their performance, using an acoustic characteristic correction device that includes a CPU, microphone, and information processing terminal to automate the process.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If individual correction is performed for each speaker, then correction precision is improved, but time and effort required increase significantly

Engineering Contradiction:

Improvecorrection precisionVSAvoidtime and effort required

Core Design Contradiction:

Measurement precisionVSLoss of time

Solution Approach 1:

The patent groups speakers with identical attachment conditions into sets and performs correction on the group level rather than individually. By measuring the average output characteristics of all speakers in a group and applying uniform correction parameters to the entire group, the system achieves efficient correction while maintaining precision for speakers with similar attachment conditions.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The patent creates a universal correction approach where speakers sharing the same attachment conditions receive identical correction parameters. This multi-functional correction method applies a single correction strategy to multiple speakers simultaneously, reducing the total correction time and effort while maintaining appropriate precision for each speaker's specific attachment conditions.

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Adaptability or versatility

If many speakers are installed to change sound field, then sound field adjustment capability is improved, but correction complexity increases

Engineering Contradiction:

Improvesound field adjustment capabilityVSAvoidcorrection complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent consolidates correction operations by grouping speakers with identical attachment conditions into sets. Instead of managing and correcting each speaker individually, the system performs a single correction operation on the group level, significantly reducing correction complexity while maintaining the ability to adjust sound field through the installed speakers.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The patent segments speakers into distinct groups based on their attachment conditions. This segmentation allows the system to manage correction complexity by handling each group uniformly rather than individually, making the overall correction process more manageable while preserving the sound field adjustment capability provided by the complete speaker system.

Inventive Principle:

Principle #1Segmentation

Data Source

PatentUS11765505B2Correction method of acoustic characteristics, acoustic characteristic correction device and non-transitory storage medium

Publication Date: 2023.09.19 YAMAHA CORP

AI summary

A correction method of acoustic characteristics of a plurality of speakers installed in a room, the correction method groups speakers, among the plurality of speakers, having identical attachment condition to the above-mentioned room, measures each of output characteristics of the grouped speakers, calculates an average characteristic of the output characteristics of the grouped speakers, and corrects each of the output characteristics of the grouped speakers based on the average characteristic.