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Portable loudspeaker using household object as acoustic enclosure

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Publication number
GB2422503A
Authority
GB
Grant status
Application
Patent type
Prior art keywords
loudspeaker
enclosure
part
drive
sound
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
GB0501529A
Other versions
GB0501529D0 (en )
Inventor
Nicholas Charles Pocock
Keith Roger Leaman
Original Assignee
Nicholas Charles Pocock
Keith Roger Leaman
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00Details of transducers, loudspeakers or microphones
    • H04R1/02Casings; Cabinets ; Supports therefor; Mountings therein
    • H04R1/025Arrangements for fixing loudspeaker transducers, e.g. in a box, furniture
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00Details of transducers, loudspeakers or microphones
    • H04R1/20Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/22Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only

Abstract

A loudspeaker comprises a drive unit 1 and a detachable acoustic enclosure 2, the enclosure being an object whose primary use is for a purpose other than for being a loudspeaker enclosure. The acoustic enclosure may be a food packaging or preparation container/tin, waste bin, bucket, plant/flower pot or saucepan. The invention also relates to a triangular speaker that fits into a corner or other part of a room or building structure, the speaker being foldable so as to be transported easily. Furthermore, the drive unit may be used as part of a headphone set when attached to a support.

Description

1 2422503 Subject: Portable Loudspeaker.

Date of filing.

Description

The purpose of this invention is to enable a loudspeaker to be carried from one place to another using the minimum of size and weight A loudspeaker is typically made up from a dipolar loudspeaker drive unit (1) and an enclosure (2). Without the enclosure part, the positive sound from the front of the loudspeaker drive unit will tend to cancel with the negative (inverse phase) sound from the rear of the loudspeaker drive unit and loudspeaker will be very inefficient at reproducing sound, particularly low frequency sound.

The sound reproduction qualities of a loudspeaker partly depend upon the size of the loudspeaker, the larger the loudspeaker; the better it will reproduce sound. This is particularly true with respect to the Bass frequencies, where there is a simple physical relationship between the efficiency of reproduction of the low frequencies, and the size of the loudspeaker enclosure. Put simply the larger the loudspeaker enclosure (2) , the more bass it will have.

Many types of loudspeaker enclosure designs have been presented in order to improve on the bass reproduction from a dipolar loudspeaker drive unit (1) but they all still follow the basic rule as stated above.

When one travels or is transporting a sound reproducing system from one place to another, one of the bulkiest components of the system is the loudspeaker and the aim of this invention is to make the loudspeaker more compact and lighter for transportation, this would be particularly advantageous when travelling on holiday for

example

In this invention the loudspeaker is made up from the loudspeaker drive unit (I) which is the part which is transported from origin to the destination and the enclosure (2) which is acquired at the destination and assembled to the loudspeaker at the destination to make a complete efficiently ftinctioning loudspeaker.

The effectiveness of the loudspeaker to reproduce the bass frequencies is dependent on the size of the enclosure and in a conventional loudspeaker system the enclosure is transported attached to the loudspeaker drive unit and practicalities limit the size of this and the efficiency and overall performance is severely restricted, in this invention the loudspeaker can be very efficient by sourcing a large enclosure at the destination or intended site where the loudspeaker will be used and this can also be left at this site upon transporting the loudspeaker elsewhere, where a new enclosure would be acquired.

For this invention to be practical the enclosure needs to easily found and acquired, and it is perceived that food packaging containers, and common household containers are used for the enclosure part The advantage of this invention of using a larger enclosure for the loudspeaker naturally allowing the loudspeaker to be more efficient can be utilised in a lower power consumption of the sound reproducing system and extended battery life, where batteries are used. This is an important aspect for portable Sound systems where there may not be east access to available electricity supplies, eg on the beach.

The sound system could be made up from parts including a Subwoofer (low frequency reproducing loudspeaker) and one or more satellites loudspeakers (reproducing the middle and high frequencies). Both the subwoofer and the satellites could use this invention, the subwoofer using, for example, a locally sourced flower pot, or bucket, or the corner of the room as the enclosure and the satellites could use a food tin, carton or tube for their enclosure.

The advantage of not transporting the enclosure parts of the loudspeaker allows the loudspeaker to be reduced immensely in size and made much more convenient for transportation. The ability of the loudspeaker to be made up from a locally acquired large container allows the loudspeakers to reproduce sound of a higher quality than systems that do not use this invention It is perceived that the loudspeaker drive unit part of the loudspeaker would consist of parts that could be folded or collapsed upon themselves to further reduce the size of the part of the loudspeaker that is transported. Parts, for example reflex tuning ports (5) could be made telescopic to make them smaller, or use a mechanism similar to the iris in a camera to reduce their size for easier transportation.

In one embodiment of this invention the speaker is made triangular or some other shape that fits into the corner of a room or other part of a building structure in order to complete the necessary enclosure.

Part of the enclosure would be most often attached to the loudspeaker drive unit and transported with it, but the majority of the bulk of the enclosure would be acquired and attached at the travel destination.

This is of particular use and those people travelling with a limited amount of luggage space and wishing to have a good sound reproducing system whilst at their destination.

it is perceived that a typical sound reproducing system would consist of a source (N41P3 player, CD player, radio receiver, etc), an amplifier with its power source (either batteries or a mains electricity adaptor) and the loudspeakers themselves using this invention. The system could simply be made up from the loudspeakers and the source if the source has enough capability to drive loudspeakers directly In another embodiment of this invention, the loudspeakers can be left unattached to any enclosure and used as headphones for personal listening with a built in means to support the loudspeakers on the listener's head as headphones.

The loudspeaker described by this invention would be characterised by having some means of attaching or sealing it to the enclosure that was acquired at the intended site of use. This attachment could be in the form of a flexible seal that uses friction to keep the assembly together or a clamp or elastic band or inflatable seal or it could use gravity, ie the mass of one of the components to effect a seal to the enclosure.

Although there maybe some sort of port or tube (5) linking the interior of the enclosure to the exterior of it, a seal is still useful in order to allow the port to correctly operate acoustically and enhance the low frequency output from the assembled loudspeaker.

A loudspeaker as described in this invention would also perform demonstrably worse in its reproduction of sound when used without any enclosure part, ie with just its transported part than it would perform when assembled with its locally acquired enclosure. This would be most notable in the lower frequency part of the frequency range and would be easily measurable and audible to a person unskilled in acoustics Drawings; Figures 1 & 2 show a dipole loudspeaker drive unit (I) and an acoustic enclosure (2) with a sealing element (3) to seal the drive unit to the enclosure.

Figures 3,4 & 5 show a loudspeaker drive unit mounted in a collapsible baffle, with ports (5). The assembly is a triangular shape to fit into a corner of a room or another suitable meeting 013 surfaces. These other surfaces seal to the assembly completing an acoustic enclosure.

The elements (4) are intended to be hinged to the main part and so can be folded to make the assembly more compact for improved portability.

Claims (12)

CLAIMS.
1. A portable sound reproducing loudspeaker consisting of at least a part with a loudspeaker drive unit and a detachable acoustic enclosure where the acoustic enclosure is acquired locally to the site of use and the part with the loudspeaker drive umt is detached from said enclosure for transportation.
2 A loudspeaker as in Claim I, which uses a food packaging container as the acoustic enclosure.
3. A loudspeaker as in Claimi, which uses a waste bin, bucket or a plant container as the acoustic enclosure.
4 A loudspeaker as in Claim 1, which uses a saucepan or other food preparation container as the acoustic enclosure.
A loudspeaker as in Claim I, which uses the structure of a room as the acoustic enclosure.
6. A loudspeaker as in Claim 5 which uses the corner of a room as the acoustic enclosure.
7. A loudspeaker as in any of the previous claims that has a collapsible component to make the transported part smaller
8. A loudspeaker as in Claims 1,2,3,4,5,6 that has a reflex port that is collapsible for transportation.
9. A loudspeaker as in Claims 1,2,3,4.5,6 that has its periphery made so that it can be folded to make a smaller area for transportation.
10. A loudspeaker as in Claims 1,2,3,4,5,6 that has its periphery made so that it can be folded to make a more convenient size for transportation.
11 A loudspeaker as in any of the above claims that includes an element for sealing the loudspeaker drive unit part to the enclosure part.
12. A sound reproducing equipment which includes a loudspeaker as described in any of the above Claims.
GB0501529A 2005-01-25 2005-01-25 Portable loudspeaker Withdrawn GB0501529D0 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB0501529A GB0501529D0 (en) 2005-01-25 2005-01-25 Portable loudspeaker

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0501529A GB0501529D0 (en) 2005-01-25 2005-01-25 Portable loudspeaker

Publications (2)

Publication Number Publication Date
GB0501529D0 GB0501529D0 (en) 2005-03-02
GB2422503A true true GB2422503A (en) 2006-07-26

Family

ID=34259643

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0501529A Withdrawn GB0501529D0 (en) 2005-01-25 2005-01-25 Portable loudspeaker

Country Status (1)

Country Link
GB (1) GB0501529D0 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015166285A1 (en) * 2014-05-01 2015-11-05 Hugh Brogan Speaker device

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US873511A (en) * 1905-12-07 1907-12-10 Model Incubator Company Thermostat.
GB1044819A (en) * 1964-11-24 1966-10-05 Brown Ltd S G Improvements in or relating to stereophonic sound reproducing apparatus
JPH06319187A (en) * 1993-05-07 1994-11-15 Yoshiyuki Iyama Speaker system using ceramic pot
US5444194A (en) * 1994-08-12 1995-08-22 Rayad Of Boise, Inc. Decorative speaker enclosure
US6021208A (en) * 1997-09-15 2000-02-01 Kin-Lung; Lien Hidden speaker enclosure structure
US20020159610A1 (en) * 2001-04-05 2002-10-31 New Transducers Limited Loudspeaker
GB2396768A (en) * 2002-12-17 2004-06-30 Jamie Richard Summers Portable, collapsible loudspeaker arrangement

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US873511A (en) * 1905-12-07 1907-12-10 Model Incubator Company Thermostat.
GB1044819A (en) * 1964-11-24 1966-10-05 Brown Ltd S G Improvements in or relating to stereophonic sound reproducing apparatus
JPH06319187A (en) * 1993-05-07 1994-11-15 Yoshiyuki Iyama Speaker system using ceramic pot
US5444194A (en) * 1994-08-12 1995-08-22 Rayad Of Boise, Inc. Decorative speaker enclosure
US6021208A (en) * 1997-09-15 2000-02-01 Kin-Lung; Lien Hidden speaker enclosure structure
US20020159610A1 (en) * 2001-04-05 2002-10-31 New Transducers Limited Loudspeaker
GB2396768A (en) * 2002-12-17 2004-06-30 Jamie Richard Summers Portable, collapsible loudspeaker arrangement

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015166285A1 (en) * 2014-05-01 2015-11-05 Hugh Brogan Speaker device

Also Published As

Publication number Publication date Type
GB0501529D0 (en) 2005-03-02 grant

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Legal Events

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WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)