Real-Time Audio Classification and Continuous Parameter Adjustment

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Solution Overview

Problem

Traditional audio processing systems require manual preset selection and discrete parameter adjustments, which are inconvenient and lead to audible artifacts when transitioning between different audio content types, such as music and speech.

Innovation Solution

An audio processing apparatus that automatically configures audio improving devices by classifying audio content in real-time using an audio classifier and adjusting parameters continuously based on confidence values, smoothing transitions to maintain audio quality.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If manual preset selection is used to differentiate audio content types, then audio processing algorithms can be optimized for specific content, but user convenience deteriorates and artifact transitions occur between different content types

Engineering Contradiction:
Improveaudio processing qualityVSAvoiduser convenience
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The system automatically classifies audio content and adjusts processing parameters without user intervention. The audio classifier continuously analyzes the input signal and determines content type (speech, music, game, etc.), then the controller automatically selects appropriate processing algorithms and parameters, eliminating the need for manual preset selection while maintaining optimized processing quality

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The system dynamically adjusts processing parameters based on real-time audio content classification. Instead of static presets, the controller continuously adapts the audio processing algorithms and parameters according to the currently detected content type, enabling seamless transitions between different audio content without audible artifacts

Inventive Principle:
Principle #15Dynamics

2Adaptability or versatility

If discrete parameter adjustments are used in traditional equalizers, then specific audio presets can be applied, but continuous parameter tuning is lost and transition artifacts occur

Engineering Contradiction:
Improvepreset configuration flexibilityVSAvoidaudio quality consistency
Core Design Contradiction:
Adaptability or versatilityVSReliability

Solution Approach 1:

The system continuously varies processing parameters based on audio content classification results. The controller adjusts equalization gains, dialog enhancement levels, and other processing parameters in a continuous manner rather than discrete steps, maintaining audio quality consistency during transitions between different content types while preserving preset configuration flexibility

Inventive Principle:
Principle #35Parameter changes

Data Source

PatentEP3598448B2Apparatuses and methods for audio classifying and processing
Publication Date: 2023.08.23 DOLBY LABORATORIES LICENSING CORP

AI summary

Apparatus and methods for audio classifying and processing are disclosed. In one embodiment, an audio processing apparatus includes an audio classifier for classifying an audio signal into at least one audio type in real time; an audio improving device for improving experience of audience; and an adjusting unit for adjusting at least one parameter of the audio improving device in a continuous manner based on the confidence value of the at least one audio type.