Sound Data Processing System Directional Noise Elimination

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Solution Overview

Problem

Conventional sound data processing systems are limited in determining the position of a sound source and eliminating noise, as they lack the capability to accurately collect and process positional and directional data from sound collecting terminals.

Innovation Solution

A sound data processing system comprising sound collecting and providing terminals that transmit positional and directional data via a network to a server, allowing the system to determine the sound source's position and generate attenuation signals to eliminate noise, while also enabling public address and remote call functions.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If conventional sound data processing systems only collect and process sound using microphones, then the system structure remains simple, but the capability to determine sound source position and eliminate noise is limited

Engineering Contradiction:

Improvesound source position determinationVSAvoidsystem structure

Core Design Contradiction:

Measurement precisionVSDevice complexity

Solution Approach 1:

The system divides sound collection into multiple directional segments using several microphones arranged in specific orientations. Each microphone captures sound from a particular direction, and the server segments the sound data according to these directional inputs to determine the sound source position through triangulation and signal processing.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The server performs multiple functions using the same microphone array: it collects sound data, determines sound source positions, eliminates noise, and enables public address and remote call functions. This multi-functionality resolves the contradiction by making the system structure serve multiple purposes without proportional increases in complexity.

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Measurement precision

If the system transmits supplementary data including position and orientation information for every sound collection, then the accuracy of sound source positioning is improved, but the data transmission load and processing complexity increase

Engineering Contradiction:

Improvesound source position accuracyVSAvoiddata transmission volume

Core Design Contradiction:

Measurement precisionVSQuantity of substance

Solution Approach 1:

The system pre-establishes the spatial relationships and orientation data of all microphones before sound collection begins. This preliminary configuration allows the server to use stored geometric information rather than transmitting and processing raw position data for every sound sample, reducing data transmission load while maintaining positioning accuracy.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

Instead of transmitting actual sound waves or high-fidelity audio data for position determination, the system uses simplified supplementary data that copies only the essential positional and orientational information needed for triangulation. This copying approach maintains accuracy while minimizing data volume.

Inventive Principle:

Principle #26Copying

3Object-affected harmful factors

If the system uses multiple sound collecting terminals with orientation data, then the capability to eliminate noise from specific directions is improved, but the device complexity and data processing requirements increase

Engineering Contradiction:

Improvenoise elimination capabilityVSAvoidnumber of sound collecting terminals

Core Design Contradiction:

Object-affected harmful factorsVSDevice complexity

Solution Approach 1:

The system assigns different functional qualities to different microphones based on their orientations. Each microphone is optimized for capturing sound from its specific direction, creating local quality differences that enable the system to selectively enhance or suppress sound from particular directions. This allows noise elimination from specific directions without requiring all microphones to be identical or omnidirectional.

Inventive Principle:

Principle #3Local quality

Data Source

PatentUS10820093B2Sound collecting terminal, sound providing terminal, sound data processing server, and sound data processing system using the same

Publication Date: 2020.10.27 SEOUL NATIONAL UNIVERSITY R&DB FOUNDATION

AI summary

Disclosed is a sound data processing system including a plurality of sound collecting terminals and a server. Each of the plurality of sound collecting terminals includes: a sound collecting means that collects a sound and has an orientation direction, and a communication module that transmits sound data corresponding to the sound collected by the sound collecting means and supplementary data including position data of a position of a corresponding sound collecting terminal and orientation direction data corresponding to the orientation direction of the sound collecting means via a network. The server receives the sound data and the supplementary data transmitted by the plurality of sound collecting terminals through the network and determines a position of a source that emits the sound collected by the sound collecting means on the basis of the sound data and the supplementary data.