Selective Noise Suppression for Communication Audio

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Solution Overview

Problem

Existing noise suppression methods apply uniformly to all audio content, degrading music and movies by suppressing intentional noise, while failing to distinguish between communication audio and background noise.

Innovation Solution

A method and system for selective noise suppression using a communication audio detector to enable noise suppression only for communication audio with detected noise, disabling it for music and non-noisy communication audio.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Object-affected harmful factors

If noise suppression is applied constantly to all audio content, then noise in communication audio is suppressed, but audio quality of music and movies is degraded

Engineering Contradiction:

Improvenoise suppression effectivenessVSAvoidaudio quality

Core Design Contradiction:

Object-affected harmful factorsVSManufacturing precision

Solution Approach 1:

The system applies different noise suppression treatments to different types of audio content based on detection results. Communication audio receives noise suppression while music and movie audio do not, achieving localized quality optimization for each content type rather than uniform treatment

Inventive Principle:

Principle #3Local quality

2Object-affected harmful factors

If noise suppression is applied to all audio content, then communication audio quality is improved, but computational resources are wasted on non-noisy content

Engineering Contradiction:

Improvenoise suppression effectivenessVSAvoidcomputational resource consumption

Core Design Contradiction:

Object-affected harmful factorsVSUse of energy by moving object

Solution Approach 1:

Instead of applying noise suppression to all audio content (excessive action), the system detects communication audio first and applies noise suppression only when needed (partial action), thereby reducing unnecessary computational resource consumption while maintaining effectiveness

Inventive Principle:

Principle #16Partial or excessive action

3Device complexity

If noise suppression is applied uniformly, then implementation is simple, but audio content differentiation is lost

Engineering Contradiction:

Improvenoise suppression implementation complexityVSAvoidaudio content adaptability

Core Design Contradiction:

Device complexityVSAdaptability or versatility

Solution Approach 1:

The system performs preliminary detection of audio content type (communication audio, music, or movie) before applying noise suppression. This preliminary classification enables subsequent adaptive treatment, achieving content-specific optimization without complex real-time adjustments

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentEP4343762B1Method for selective noise suppression in an audio playback

Publication Date: 2025.12.17 CREATIVE TECHNOLOGY LTD

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AI summary

A method for selective noise suppression in an audio playback is provided. The method includes providing a processor, obtaining a microphone state and a playback device state with the processor from an operating system, determining the audio playback is communication audio based on the microphone state and the playback device state, and enabling applying noise suppression to the audio playback if the audio playback is communication audio, is not music and noise is present, or otherwise disabling applying noise suppression to the audio playback.