# Scenario-based functional modularization framework for consumer electronics using MFD and AHP: A case study on audio products

## TL;DR

This paper introduces a new design framework for consumer electronics that improves personalization and sustainability by adapting to different usage scenarios.

## Contribution

A novel scenario-based functional modularization framework integrating MFD and AHP to address multi-scenario needs and reduce e-waste.

## Key findings

- The framework successfully identified common and scenario-specific modules in audio products.
- It demonstrated feasibility in reducing functional redundancy and electronic waste.
- The Modular Scenario Relevance Matrix enabled precise mapping of technical solutions to scenarios.

## Abstract

Consumer Electronics (CE) currently face dual pressures: the growing demand for personalization and multi-scenario usage, and the need to enhance product sustainability. Traditional single-function designs struggle to adapt to these changes, leading to resource underutilization and the generation of significant electronic waste (e-waste). Consequently, there is an urgent need for a design method capable of systematically partitioning product functions based on distinct scenarios. However, existing modularization approaches predominantly focus on production efficiency, often failing to address multi-scenario user needs or effectively reduce e-waste. To address this gap, this paper proposes a scenario-based functional modularization framework. This framework integrates Modular Function Deployment (MFD) with the Analytic Hierarchy Process (AHP) to quantify scenario-specific requirements and establishes a Modular Scenario Relevance Matrix (MSRM) to achieve precise mapping between technical solutions and specific scenarios. A case study on audio products verified the feasibility of the framework, successfully identifying a common module and several scenario-specific functional modules (e.g., home entertainment, smart home, outdoor). This study provides designers with a systematic method for developing flexible and adaptable CE products, demonstrating how scenario-driven modularity can enhance product sustainability by reducing functional redundancy and e-waste while satisfying diverse consumer demands.