Portable Speaker Acoustic Path Layout for Thin-Terminal Audio

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Solution Overview

Problem

The limited space in portable terminals poses a challenge for speakers to provide excellent sound quality, making it difficult to achieve clear and rich audio output.

Innovation Solution

The electronic device incorporates an acoustic output path, including multiple separated acoustic output paths and an acoustic chamber, to efficiently guide sound from the speaker to the exterior, enhancing sound quality by ensuring separate propagation of different frequency registers.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a speaker is disposed in a portable terminal, then audio output function is improved, but the terminal thickness increases

Engineering Contradiction:

Improveaudio output functionVSAvoidterminal thickness

Core Design Contradiction:

Adaptability or versatilityVSLength of stationary object

Solution Approach 1:

The speaker is disposed within the notification output unit's cavity space. The notification output unit serves dual purposes: it houses the vibration motor and provides a cavity that accommodates the speaker, effectively nesting one component within another to save space and reduce terminal thickness.

Inventive Principle:

Principle #7Nested doll (Nesting)

Solution Approach 2:

The acoustic output path utilizes the thickness direction (z-axis) of the terminal by creating a cavity extending from the rear surface toward the front surface. This allows the speaker to be positioned in the thickness dimension rather than requiring additional lateral space, thereby maintaining a compact form factor while providing audio output functionality.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

2Adaptability or versatility

If a notification output unit is disposed in the portable terminal, then notification function is improved, but the terminal weight increases

Engineering Contradiction:

Improvenotification functionVSAvoidterminal weight

Core Design Contradiction:

Adaptability or versatilityVSWeight of moving object

Solution Approach 1:

The notification output unit is designed to serve multiple functions: it houses the vibration motor for haptic notifications, provides a cavity for the speaker for audio notifications, and acts as a structural component of the terminal body. This multi-functionality reduces the need for separate dedicated components, thereby minimizing overall weight increase.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The notification output unit combines the vibration motor housing and speaker cavity into a single integrated structure. By merging these functions into one unit rather than using separate housings and mounting structures, the overall weight added to the terminal is minimized while maintaining both notification capabilities.

Inventive Principle:

Principle #5Merging (Combining)

3Device complexity

If the speaker and notification output unit share the same cavity, then device complexity is reduced, but acoustic output performance deteriorates

Engineering Contradiction:

Improvestructure complexityVSAvoidacoustic output performance

Core Design Contradiction:

Device complexityVSReliability

Solution Approach 1:

The cavity is divided into distinct regions: a first cavity portion dedicated to the speaker with acoustic holes for sound output, and a second cavity portion for the notification output unit. This spatial separation within the shared cavity ensures that each component has its own optimized space for optimal performance, preventing acoustic interference while maintaining structural simplicity.

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The cavity structure acts as an intermediary space that accommodates both the speaker and notification output unit. By designing the cavity with specific acoustic holes and spatial separation, it mediates between the two components to prevent harmful acoustic interactions while allowing both to function effectively within the shared space.

Inventive Principle:

Principle #24Intermediary (Mediator)

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

This configuration allows for improved sound clarity and richness by effectively transmitting sound through distinct channels, optimizing the speaker's performance in constrained spaces.

Implementation Method 1

a speaker and an acoustic output path for the speaker, wherein the acoustic output path is configured to output sound of the speaker

Methodology Applied

Scientific EffectSound wave propagation: Sound

Data Source

PatentEP4018631B1Portable terminal having speaker and acoustic output path for speaker

Publication Date: 2026.04.29 SAMSUNG ELECTRONICS CO LTD

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AI summary

An electronic device is provided. The electronic device includes a housing including a first surface facing in a first direction, a second surface facing in a second direction opposite to the first direction, and a side surface member enclosing the first surface and the second surface, a display visible through at least a portion of the first surface, an opening formed on a portion of the first surface, a speaker positioned within the housing, a sensor positioned within the housing, and a first path configured to guide a sound of the speaker to the opening, and a second path configured to guide the sound of the speaker to the opening and to avoid overlapping the first path, and at least a portion of the sensor is positioned between the first path and the second path.