Portable vocal booth

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Solution Overview

Problem

Existing portable vocal booths do not adequately adapt to different voice volumes and sound images, leading to inadequate sound attenuation for strong voices and excessive attenuation for weak voices, resulting in an unsatisfactory sound experience.

Innovation Solution

A partition wall made of sound-absorbing material is placed between the sound-absorbing insert and the rear part of the hood, with a gap between the insert and the partition wall, allowing for variable attenuation based on voice volume. The partition wall's position and thickness, along with the gap's size, enable adjustment for different voice levels, and a sound-reflecting film coating preserves lighter tones.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Object-generated harmful factors

If a sound absorbing insert is provided in the front part to greatly attenuate sound, then sound leakage outside the booth is reduced, but the sound image inside becomes inappropriate for different voice volumes and song types

Engineering Contradiction:

Improvesound leakage outsideVSAvoidadaptation to different voice volumes

Core Design Contradiction:

Object-generated harmful factorsVSAdaptability or versatility

Solution Approach 1:

The front part of the hood is segmented into multiple functional zones: a sound absorbing insert for attenuating strong sounds, a partition wall for controlling sound diffusion, and a gap for allowing sound passage. This segmentation enables different regions to serve different purposes based on voice volume, resolving the contradiction between sound leakage reduction and adaptability to different voice volumes.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Different parts of the front assembly have different sound treatment properties: the sound absorbing insert provides strong attenuation for high-volume voices, the partition wall provides moderate attenuation and sound diffusion, and the gap allows sound passage. This local differentiation of sound treatment quality enables the system to handle both strong and weak voices appropriately while maintaining sound image quality.

Inventive Principle:

Principle #3Local quality

2Weight of moving object

If a thin layer of sound absorbing material is used, then the booth remains portable and lightweight, but sound attenuation is insufficient for strong voices

Engineering Contradiction:

Improvebooth weightVSAvoidsound attenuation capability

Core Design Contradiction:

Weight of moving objectVSObject-generated harmful factors

Solution Approach 1:

The front sound treatment system uses a composite structure combining sound absorbing material, partition wall, and gap. This composite approach provides effective sound attenuation for strong voices without requiring a single thick layer of sound absorbing material, thus maintaining the booth's portability and lightweight characteristics while improving sound attenuation capability.

Inventive Principle:

Principle #40Composite materials

3Object-generated harmful factors

If sound absorbing material is increased to improve attenuation, then sound leakage outside is reduced, but the breathing atmosphere inside deteriorates

Engineering Contradiction:

Improvesound leakage outsideVSAvoidbreathing atmosphere

Core Design Contradiction:

Object-generated harmful factorsVSEase of operation

Solution Approach 1:

The gap between the partition wall and sound absorbing insert acts as an intermediary channel that allows sound to pass through while maintaining the sound treatment effect. This intermediary space enables the system to achieve effective sound attenuation without completely blocking air flow, thus preserving the breathing atmosphere inside the booth while reducing sound leakage outside.

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 ensures acceptable sound levels outside while providing a pleasant sound experience inside the booth for both strong and weak voices, with adjustable sound image and reduced noise from the fan, maintaining a comfortable breathing atmosphere.

Implementation Method 1

a sound absorbing insert is provided in the front part inside of the front wall

Methodology Applied

Scientific EffectSound absorption: Acoustic Absorption

Implementation Method 2

a partition wall made of a sound absorbing material is arranged in the front part between the sound absorbing insert and the rear part of the hood

Methodology Applied

Scientific EffectSound absorption: Acoustic Absorption

Data Source

PatentUS10961735B2Portable vocal booth

Publication Date: 2021.03.30 ISOVOX AB

AI summary

The invention relates to a portable vocal booth (1) comprising a hood (2) that comprises a top (3), side walls (6), a front wall (4) and a rear portion (5) and is adapted to freely enclose a singer's head. The hood (2) comprises a rear part (R), which is intended to accommodate the singer's head and is open forwards and downwards and otherwise limited by the top (3), the side walls (6) and the rear portion (5), and a front part (F), which is intended to be in front of the singer's head and at the back is open towards the rear part (R) and is otherwise limited by the top (3), the side walls (6), the front wall (4) and a bottom wall (8), wherein a sound absorbing insert (16) is provided in the front part (F) inside the front wall (4). In the front part (F) between the sound absorbing insert (16) and the rear part (R) of the hood (2) a partition wall (17) of a sound absorbing material is arranged, and between the sound absorbing insert (16) and the partition wall (17) a gap (18) is provided.