GB2224908A

GB2224908A - Stereo speaker

Info

Publication number: GB2224908A
Application number: GB8826269A
Authority: GB
Inventors: Haqi Ismail Hussain Almossawi; Carol Almossawi
Original assignee: Individual
Current assignee: Individual
Priority date: 1988-11-09
Filing date: 1988-11-09
Publication date: 1990-05-16
Also published as: GB8826269D0

Abstract

The speaker comprises an outer layer (preferably spherical) of at least one (but preferably many) magnetic rings 1. An inner layer consists of one or more electrical coils 2. Fine particles 3 of ferromagnetic materials may be located at the centre of the speaker for vibration in its magnetic fields. The Stereo Speaker is able to transmit spherical and/or plane waves of acoustical vibrations in 3 dimensions, and could be used for any particular frequency of interest. Overall, the Stereo Speaker may be used in any geometrical shape favourable for any acoustic survey and/or research including engineering, medical, and scientific applications. <IMAGE>

Description

PANEL A STEREO SPEAKER Technical Field This invention relates to the Stereo Speaker.

B~ackqreund Having the acoustical wavefronts which are planar, as might originate from a source, is a common assumption in sonic equipments. The sonic transducers (e.g. speakers, headphones, etc.) are based on the assumption of transmitting plane waves, which is not strictly true in actual situations.

However, another type of transducers is required to 1) transmit the actual stereo sound, 2) reduce the numbers of the acoustical stereo transducers, and 3) give a better stereo sound transmission.

Essential technical features According to the present invention there is provided the Stereo Speaker which is comprising of a prefered elastic shape, e.g. sphere. The outer layer of the sphere is composed of a single or minute magnetic rings with mono- and/or di-pole nature. The inner layer of the sphere is composed of a single or multiple grids of electrical coils, which are capable of creating magnetic fields. Fine Particles of Ferromagnetic Material(s) FPFM are contained and suspended along the centre of the sphere. The FPFM are composed of a single or multiple materials with mono- and/or dipole nature.

PANEL B STEREO SPEAKER The Stereo Speaker operates to convert the electrical current signals to 3 dimensional mechanical vibrations.

The stereo speaker represents parallel connections of an infinite numbers of minute transducers,which are capable of transmitting spherical and/or plane sound waves, in 3 dimensions.

Example A specific embodiment of the invention will now be described by way of example with reference to the accompanying drawing in which Figure 1 shows a cross section area of a spherical Stereo Speaker. The outer layer (1) consists of an elastic magnet.

The inner layer (2) consists of an elastic grid of electrical coils. Fine Particles of Ferromagnetic Material(s) FPFM (3) are contained and suspended along the centre of the sphere, without a support from any direction. The driving electrical current signals, through the electrical current plugs (5) which are contained in a non magnetic plugs housing (4), to the electrical coils creat magnetic fields and cause the FPFM to vibrate inside the sphere. These 3 dimensional vibrations could be transmitted through out the elastic spherical layers.

These spherical layers have very low sound absorption and reflection coefficients, and allow the sound waves to pass consistently.

[ PANEL C 1 STEREO SPEAKER Therefore, a Stereo Speaker converts the electrical voltages to mechanical vibrations,and the required frequency bandwidth is shown in figure 2. Where a flat spectra are required over the frequency band width of 20 Hz - 20 MHz.

The Stereo Speaker has a prefered elastic shape, e.g. sphere, (1) with X dimension(s), (2) very low sound absorption and and reflection coefficients, (3) the outer layer is made of a single magnetic ring or series of minute magnetic rings.

The magnetic rings are made of one type of material or more, and (4) the magnetic intensities of the rings are identical or vary from one ring to another,with mono- and/or di-pole nature.

The inner layer of the sphere consists of one elastic grid of electrical coils or more. These electrical coils are very sensitive to the driving electrical current signals, which creat magnetic fiels capable of vibrating the FPFM inside the sphere. The required frequency spectra of the 3 dimensional vibrations need one or more of the followings 1) type of FPFM, with mono- and/or di-pole nature, 2) size and weight of particle, and 3) magnetic intensity of the FPFM.

Also, the elasticity of the spherical layers determine the frequency band width and the intensity of the transmitted stereo sound.

[ PANEL D ] STEREO SPEAKER The required electrical specifications are 1) Input Voltage, 2) Output Power, and 3) Temperature are specified according to the type of application.

4) Input/Output Mode is Digital and/or Analog, 5) Distortion is less than 0.2 *, 6) Stability of the frequency is required over the frequency band width of 20 Hz - 20 MHz.

7) Accuracy is more than 98 %, and 8) Sensitivity is + 0.2 * of the practical nominal value.

The required filtering is the Noise (due to thermal, coil resistance, Brownian particle motion in the gas within the spherical case) and infrasound.

The environmental integrity includes the Dust and Humidity, Water Resistance,and low sensitivity to unwanted environmental effects such as temperature, humidity, bending, and any environmental magnetic effects.

Claims

[ PANEL E ]

CLAIMS 1) The Stereo Speaker is comprising of a hardware device, containing the necessary electrical components, and operates to convert the electrical current signals to 3 dimensional mechanical vibrations.

2) The Stereo Speaker as claimed in 1, wherein the device has a prefered elastic shape, e.g. sphere. The outer layer consists of one magnetic ring or series of minute magnetic rings, and the following characteristics determine the frequency band width and intensity of the stereo sound (a) dimension(s), (b) magnetic intensity of the rings: which may be vary from one ring to another, with mono- and/or di pole nature, (c) very low sound absorption and reflection coefficients, and allow the stereo sound to pass consistently, and (d) the elasticity.

The inner layer consists of one electrical coil or more. The electrical characteristics of the coils and their elasticity determine the transmitted frequency band width and the intensity of the stereo sound.The driving electrical current signals,through the current plugs which are contained in a non magnetic housing, creat magnetic fields which are capable of vibrating the Fine Particles of Ferromagnetic Material(s) FPFM, in 3 dimensions.

PANEL F ] CLAIMS 3) The Stereo Speaker as claimed in 1 - 2, wherein the FPFM are contained and suspended inside the device (e.g. sphere), and preferably located along the centre and manoeuvre at a specific gravity and/or magnetic fields. The transmitted frequency band width and intensity of the stereo sound also depend on the, (a) size and weight of the FPFM particles, and their numbers, (b) type of the FPFM and their mono- and/ or di-pole nature, (c) magnetic intensity of the FPFM, and (d) elasticity of the FPFM 4) The Stereo Speaker as claimed in 1 - 3, wherein the driving electrical current signals to the electrical coils creat magnetic fiels capable of vibrating the FPFM in 3 dimensions.

The 3 dimensional vibrations produce the stereo sound.

5) The Stereo Speaker as claimed in 1 - 4, wherein the required elastic shape has a non magnetic plugs housing.

A series of Stereo Speakers may be connected and used together to form one speaker of any desired geometrical shape. Although, this may be considered as one speaker, however this represents parallel connections of an infinite number(s) of minute transducers.

6) The Stereo Speaker as claimed in l-5,wherein the required frequency bandwidth, output power, and other electrical specifications have functions of the (a) dimension(s) of the device, (b) elasticity and electrical characteristics [ PANEL G ] CLAIMS of the coils, (c) the design of the inner layer, (d) the elasticity and characteristics of the FPFM and the outer ring(s), and (e) the type of application.

7) The Stereo Speaker as claimed in 1 - 6, wherein the required measured sensitivity is within + 28 of the practical nominal value, long term stability, and designed to give very low sensitivity tto unwanted environmental effects such as temperature,humidity,bending, and any environmental magnetic effects.

8) The Stereo Speaker as claimed in 1 - 7, wherein the special requirements, for example high pressure or any engineering application, are included by mounting the Stereo Speaker in a special mold which matches the requirements.

9) The Stereo Speaker as described herein with reference to figures 1-2 of the accompanying drawing. The design method is a case of art, and may be arranged in a variety of ways and according to the adopted engineering method of manufacture.

Amendments to the claims have been filed as follows 1. An active free gravity space of stereo speaker arrangement for transforming multi-phases or directions of input electronic signals into stereo infra-sounds and sounds comprising a free gravity magnetic levitated crystalographic or spherical object; dynamic magnets along axes of crystalogaphic system of geometry; a proportional dimensions of megneto-dynamic housing permited infinite freedom of motion of said levitated object inside; including means for applying a free gravity space of magnetic levitation; means for applying a magnetic levitation of said levitated object; means responsive to free motions of levitated object; means responsive to characterise of said levitated motion; and operative when so activated by fluctuating input electronic signals for free activating of said levitated object and vibrating cone to thereby initiate the performance of the stereo speaker.
2. An arrangement as claimed in Claim 1 wherein said levitated object is arranged to move freely in an infinite dimensions or directions.
3. An arrangement as claimed in Claims 1 or 2 wherein said levitated object, the core of said levitated object, or free gravity space experience spherical or crystal ographic system of geometry.
4. An arrangement as claimed in any preceding claim in which said levitated object is arranged to experience free gravity motions.
5. An arrangement as claimed in any of Claims 1 to 4 including an indicator, which indicator is arranged to provide an indication of a change in said free gravity of levitational motions or responsive electro-magnetic or acoustic signals.
6. An arrangement as claimed in Claim 5 wherein the indicator comprises levitation signals input means and responsive signals output means.
7. An arrangement as claimed in Claims 5 and 6 where in the signal output means includes means to increase the induced signal to noise ratio, filter unwanted signals, and separate any feedback signal from the induced signals.
8. An arrangement as claimed in any of Claims 5 to 7 wherein the indicator means comprises peizoelectric elements which transform the multi-phases and directions of input electronic signals into high frequency sounds.
9. An arrangement as claimed in any of Claims 1 to 8 wherein said free gravity levitational electro-magnetic fields or forces are provided by plurality of dynamic magnets and electrical coils each of different orientation and arranged along axes of crystalographic system of geometry.
10. An arrangement as claimed in any of Claims 1 to 9 wherein said levitated object comprises a sample of ferro magnetic or para-magnetic levitated object which is arranged to be levitated inside said free gravity space.
11. An arrangement as claimed in Claims 1 or 2 wherein the infinite axes of translational or rotational motions of said levitated object is arranged to change the responsivce electro-magnetic field of said free gravity housing.
12. An arrangement as claimed in Claim 1 or 2 wherein the input or responsive electro-magnetic field is arranged to effect the free gravity motions of said levitated object.
13. An arrangement as claimed in any preceding claim in which said levitated object is arranged to experience free gravity transulational or rotational motions which motions are symmetrical or identical to the symmetry or geometry of the free gravity space.
14. An arrangement as claimed in Claims 4 or 13 in which said levitated object is arranged to be levitated againest gravity or magnetic forces and by electro-magnrtic levitation.
15. An arrangement as claimed in Claim 3 or Claims 4 to 14 when dependent on Claim 3 wherein said free gravity space or levitation housing is controlled by dynamic magnets which are arranged along axes of crystalographic system of geometry and proportional to the dimensions of said levitated object.
16. An arrangement as claimed in Claim 13 or 14 wherein a cooling agent may arranged to provide a stable magneto-dynamic and/or magneto-static levitation.
17. An arrangement as claimed in any preceding claim wherein said levitated object is arranged to be levitated in free gravity space which space may experience a non magnetic net along the border lines.
18. An arrangement as claimed in any preceding claim wherein said levitated object is levitated by magneto dynamic forces.
19. An arrangement as claimed in any preceding claim wherein said levitated object may be arranged to be levitated by a plurality of fibres.
20. An arrangement as claimed in Claim 4 or any preceding claim when dependent on Claim 4 wherein the means to provide magneto-dynamic levitation comprises a plurality of dynamic magnets composed of dynamic magnets including ferro-magnetic cores and electrical coils of different orientations to form geometrical frame of said free gravity space which space and geometrical frame are proportional to the geometry of said levitated object.
21. An arrangement as claimed in Claim 20 wherein the dynamic magnets are provided in numbers six, nine, or even or odd multiples thereof and arranged along the axes of crystalographic system of geometry.
22. An arrangement as claimed in any preceding claim including a vibrating plate or fibres, electrical coils, and dynamic magnetic core attached to, or comprising part of, the dynamic magnet.
23. A method of operating a free gravity space of electro magnetic operable arrangement including a spherical or crystalographic levitated object comprising levitating said levitated object inside dynamic electro-magnetic field, and inter-relating free gravity motion of said levitated object and the electro-magnetic field.
24. A method as claimed in Claim 23 in which said levitated object moves freely in an infinite dimensions or directions inside the free gravity space and as a function of the time.
25. A method as claimed in Claim 23 or 24 in which the infinite transulational and rotational motion of said levitated object changes the surrounding- electro-magnetic forces and/or vice versa.
26. A method as claimed in any of Claims 23 to 25 comprising interpreting input levitational signals and output responsive signals from an indicator means.
27. A method as claimed in Claim 26 in which the output responsive signals from the indicator means are indicative or responsive to free gravity motion of said levitated object,characteristics of said levitated motion, cone or fibres vibrations, and the power or phase of the fluctuating input electronic signals.
28. Apparatus as claimed in any of Claims 1 to 22 when -used in a method as claimed in any of Claims 23 to 27.