AI Call Audio Personalization Using Voice Feature Equalization

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Solution Overview

Problem

Conventional call services on mobile terminals cannot personalize call sound quality based on the user's or far-end's sound features, leading to inconsistent and potentially uncomfortable audio experiences.

Innovation Solution

A sound control method using machine learning to generate person information sets based on sound signal attributes, adjusting audio equalizer parameters to optimize call sound quality, and incorporating reinforcement learning for feedback-based adjustments.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If conventional call service is used, then the system is simple and easy to operate, but the call sound quality cannot be personalized according to user or far-end sound features

Engineering Contradiction:
Improvepersonalization of call sound qualityVSAvoidsystem complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The system performs preliminary actions by pre-processing sound signals during calls to extract sound features, pre-classifying far-end devices into categories, and pre-storing multiple equalizer parameter sets corresponding to different device categories. This preparation work is done in advance so that when a call occurs, the system can quickly retrieve and apply the appropriate parameters without complex real-time processing, thus achieving personalization without excessive complexity.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The system implements self-service by automatically extracting sound features from incoming sound signals, autonomously classifying far-end devices based on sound characteristics, and automatically selecting and applying appropriate equalizer parameters without requiring manual user configuration. The machine learning model continuously learns from call data to improve classification accuracy, enabling the system to serve itself and adapt to new devices independently.

Inventive Principle:
Principle #25Self-service

2Ease of operation

If call sound quality is constantly output without personalization, then the system is simple, but the audio experience becomes inconsistent and potentially uncomfortable

Engineering Contradiction:
Improveaudio experience consistencyVSAvoidadaptation to user and far-end features
Core Design Contradiction:
Ease of operationVSAdaptability or versatility

Solution Approach 1:

The system applies local quality by categorizing far-end devices into different types (e.g., smartphones, tablets, computers) and assigning specific equalizer parameter sets to each category based on their acoustic characteristics. This allows the system to provide tailored audio optimization for each device type rather than using a uniform approach, ensuring consistent and comfortable audio experiences across different devices while maintaining system simplicity through structured classification.

Inventive Principle:
Principle #3Local quality

3Manufacturing precision

If machine learning model is used to adjust audio equalizer parameters, then call sound quality is personalized, but processing time and computational resources increase

Engineering Contradiction:
Improvesound quality optimizationVSAvoidprocessing time
Core Design Contradiction:
Manufacturing precisionVSLoss of time

Solution Approach 1:

The system performs preliminary classification of far-end devices into categories during or after calls, and pre-stores multiple equalizer parameter sets corresponding to different device categories. When a new call occurs, the system quickly matches the far-end device to a known category and retrieves the pre-prepared parameter set, avoiding the need for complex real-time machine learning processing during the call itself. This reduces processing time while maintaining sound quality optimization.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The system applies partial action by focusing machine learning processing only on extracting key sound features and classifying device categories, rather than performing exhaustive analysis of all audio parameters. The model processes only the most critical features needed for classification, and uses these partial results to select from pre-prepared parameter sets, achieving adequate sound quality optimization with reduced computational overhead and processing time.

Inventive Principle:
Principle #16Partial or excessive action

Data Source

PatentUS11240602B2Sound quality improvement based on artificial intelligence
Publication Date: 2022.02.01 LG ELECTRONICS INC
  • US11240602B2 patent drawing
  • US11240602B2 patent drawing
  • US11240602B2 patent drawing

AI summary

A sound quality improvement based on artificial intelligence is disclosed. A sound control method based on artificial intelligence according to an embodiment of the present disclosure provides a different call sound quality for each person based on a plurality of person information stored in an address book of a mobile terminal. The mobile terminal and 5G network of the present disclosure may be associated with an artificial intelligence module, a drone ((Unmanned Aerial Vehicle, UAV), a robot, an AR (Augmented Reality) device, a VR (Virtual Reality) device, a device associated with 5G services, etc.