Downward-Facing Speaker Drivers for Kitchen Audio Reflection

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Solution Overview

Problem

Existing electronic devices, such as docking stations, often fail to provide optimal audio quality and intelligibility for household tasks like cooking, particularly when used in kitchens, due to limitations in speaker orientation and acoustic design.

Innovation Solution

The docking station features a cylindrical main body with elevated speaker drivers oriented towards the ground, a detachable holder for user devices, and a combination of active and passive speakers, along with a cylindrical acoustic chamber, to enhance audio quality and intelligibility by reflecting sound waves and reducing interference.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If speaker drivers are oriented in conventional directions (upward or forward), then the device structure is simple, but audio quality and intelligibility are insufficient for household tasks

Engineering Contradiction:

Improveaudio qualityVSAvoidspeaker orientation configuration

Core Design Contradiction:

Manufacturing precisionVSDevice complexity

Solution Approach 1:

The speaker drivers are inverted to face downward toward the ground instead of the conventional upward or forward orientation. This inversion allows sound waves to reflect off the ground surface and reach the user, significantly improving audio quality and intelligibility for household tasks while maintaining a relatively simple device structure

Inventive Principle:

Principle #13The other way round (Inversion)

Solution Approach 2:

The ground surface serves as an intermediary medium that reflects sound waves from the downward-facing speaker drivers toward the user. This intermediary reflection path enables improved audio delivery without requiring complex internal acoustic structures within the device itself

Inventive Principle:

Principle #24Intermediary (Mediator)

2Manufacturing precision

If multiple speaker drivers are added to improve audio quality, then audio performance increases, but device complexity and interference increase

Engineering Contradiction:

Improveaudio qualityVSAvoidnumber of speaker drivers

Core Design Contradiction:

Manufacturing precisionVSDevice complexity

Solution Approach 1:

The audio system is segmented into multiple independent speaker drivers (including tweeters and woofers) with distinct frequency ranges. Each driver handles specific frequency bands, and their downward orientation toward the ground allows their sound waves to reflect and combine, improving overall audio quality while managing complexity through functional segmentation

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Different speaker drivers are positioned and oriented to optimize their specific frequency ranges. The tweeters and woofers are strategically arranged to face downward, with each driver optimized for its local frequency domain, allowing high-quality audio reproduction across the full spectrum while maintaining manageable device complexity

Inventive Principle:

Principle #3Local quality

3Manufacturing precision

If speaker drivers face upward or forward, then device structure is simple, but audio intelligibility in kitchen environments is poor

Engineering Contradiction:

Improveaudio intelligibilityVSAvoiddevice configuration

Core Design Contradiction:

Manufacturing precisionVSEase of operation

Solution Approach 1:

The speaker drivers are inverted to face downward toward the ground rather than upward or forward. This inversion creates a reflected sound path that delivers audio more effectively to users in kitchen environments, significantly improving audio intelligibility for cooking instructions and other household tasks

Inventive Principle:

Principle #13The other way round (Inversion)

Solution Approach 2:

The ground surface, which could be considered a limiting factor in device placement, is converted into a beneficial reflective surface. By orienting speakers downward, the device utilizes the ground as an acoustic reflector to improve sound delivery, turning a potential constraint into an advantage for audio intelligibility

Inventive Principle:

Principle #22Blessing in disguise (Convert harm into benefit)

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 significantly improves the comfort of use by providing high-quality, intelligible audio signals, suitable for kitchen environments, with increased audio quality and reduced interference, allowing for a more effective interaction with user devices and internet streaming platforms.

Implementation Method 1

The one or more speaker drivers are oriented towards the ground that the electronic device is standing on, so that acoustic waves that are emitted by the one or more speaker drivers are reflected by the ground

Methodology Applied

Scientific EffectAcoustic wave reflection: Reflection

Data Source

PatentEP4027651A1Electronic device with one or more speaker drivers

Publication Date: 2022.07.13 BOSCH SIEMENS HAUSGERATE GMBH

Figure 1a
Figure 1b~2a
Figure 2b~2c

AI summary

An electronic device (100) is described. The electronic device (100) comprises a main body (106) extending along a longitudinal axis which is parallel to a ground (202) that the electronic device (100) is standing on. The main body (106) comprises one or more speaker drivers (108) for rendering an audio signal, wherein the one or more speaker drivers (108) are at least partially oriented towards the ground (202). The electronic device (100) further comprises one or more feet (105, 111) extending downwards from the main body (106) and configured to hold the main body (106) elevated at an elevation distance (203) from the ground (202).