HARMONIC AMPLIFIER AND CORRESPONDING ELECTROACOUSTIC TRANSDUCER

AMPLIFICATEUR HARMONIQUE ET TRANSDUCTEUR ELECTRO-ACOUSTIQUE CORRESPONDANT

Abrégé français

The invention relates to a device that improves an audio sound emitted by at
least one acoustic baffle, the device delivering an electric signal to the at
least
one acoustic baffle, the device comprising (i) means for superimposing on the
audio sound refined sound information contained in a source signal of the
audio
sound; and (ii) at least one coil of wire in free ambient air to which is
supplied an
electric signal, which is the same of the signal of the device delivers to the
at
least one acoustic baffle, wherein the device is adapted to provide a harmonic
amplifying electro-acoustic transducer to supplement at least one of
electro--acoustic baffles and a transducer.

Abrégé anglais

In the field of sound reproduction it is customary to use diaphragms excited by magnetic motors or tape electrostatic systems. All these products have important volumes being actuated to produce sound. Inversely, sound is an impact between air particles which are infinitely small in volume which provide them with high sound propagation velocity. The invention concerns a method using low level electromagnetism which relies on ambient air particles, thereby generating a novel magnetic field. Said method is characterised in that it uses an apparatus consisting of at least an electric wire winding (1) coiled on a flexible polymer support (2), with an impedance of 8 ohms. Said apparatus is coupled with an audio electric signal of an acoustic chamber or an acoustic supply. Said method and apparatus can be used on all audio, audio-visual systems and any communication mode such as telephone, radio as well as in the medical field for the auditory comfort of hard-of-hearing persons.

Revendications

CLAIMS
1. A device that improves an audio sound emitted by at least one acoustic
baffle, said device delivering an electric signal to the at least one acoustic
baffle, said device comprising (i) means for superimposing on the audio
sound refined sound information contained in a source signal of the audio
sound; and (ii) at least one coil of wire in free ambient air to which is
supplied an electric signal, which is the same of the signal of the device
delivers to the at least one acoustic baffle, wherein the device is adapted
to provide a harmonic amplifying electro-acoustic transducer to
supplement at least one of electro-acoustic baffles and a transducer.
2. The device according to claim 1, further comprising at least one magnet to
augment magnetic field effects.
3. The device according to claim 1 or 2, further comprising a solenoid having
at least one magnet on either one of an exterior or interior of the solenoid,
the at least one magnet imposing a constant magnetic field to mask the
terrestial magnetic field, and wherein the at least one magnet activates an
effect of the solenoid and diminishes a sensitivity of the solenoid.
4. The device according to any one of claims 1 to 3, further comprising at
least one coil of electric wire wound on a flexible polymer base.
5. The device according to claim 4, wherein the at least one coil of electric
wire has a diameter of 1/10 of a millimeter, the polymer base is 10
centimeters long and 0.8 centimeter in diameter, and an impedance of the
at least one coil of electric wire is 8 ohms.
6. The device according to any one of claims 1 to 3, further comprising a coil
having first and second layers having a same direction of winding, a return
wire being placed along the winding that allows microvibrations to occur
between turns of the winding, the first and second layers having different
voltages between the turns.

7. The device according to any one of claims 1 to 6, integrated into a facade
of an acoustic chamber.
8. The device according to claim 1, wherein an electro-acoustic transducer
solenoid is mounted free-standing iri ambient air beside a tweeter and
before a facade, the electro transducer solenoid being fastened by
mechanical means and mounted electrically to the tweeter by electric
wires from an electro-acoustic filter.
9. The device according to claim 1, wherein the at least one coil of electric
wire has any one of a round, conical, or square cross-section.
10. The device according to any one of claims 1 to 6 or 8, wherein the device
is mounted directly onto a general audio feed between an amplifier and the
at least one baffle.
11. The device according to any one of claims 1 to 6 or 8, wherein a plurality
of such devices are mounted either one of serially, in parallel, or both.
12. The device according to claim 1, comprising either one of one coil of
electric wire without a diaphragm or several coils atop one another.
13. The device according to any one of claims 1 to 12, to supplement any one
of audio and audio-video systems and means of communication to
improve auditory comfort.
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Description

CA 02340072 2007-03-06
Harmonic amplifier and corresponding electro-acoustic transducer
Field of the invention
The invention relates to a device that improves an audio sound emitted by at
least one acoustic baffle.
Background of the invention
1o In the field of sound reproduction, it is normal practice to use membranes
excited
by diamond motors or electrostatic strip systems.
It is normal to identify these products by acoustic efficiencies and
acceleration
speeds.
AII these products have significant masses in movements to produce the sound.
On the other hand, sound is an impact between air particles which have
infinitely
small masses conferring high sound propagation speeds, namely about 300
meters per second.
One product, such as the plasma chamber, was close to the physical
performances of air since it acted on the level of the air particles. The
drawback
of this method was that it went through a chemical transformation of the
composition of the air, and in order to do this, relatively expensive means
were
used.
Summary of the invention
The present method is a complement to current sound reproduction systems,
such as the acoustic chambers used. These chambers create the required sound
bases but are not refined and in particular have a characteristic defect in
that they
do not observe sound intermodulation. The present method and device
superimpose on the coarse sound signall of the chambers the fine sound
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CA 02340072 2007-03-06
information contained in the original electric audio signal. This sound
information
has the precise order and amplification of space-time harmonics.
The present method uses low level electro-magnetism which is applied to the
ambient air particles, thus creating a new magnetic field on the terrestrial
magnetic field. Thus, the air particles are agitated by the new magnetic field
which varies in opposition to the stable reference terrestrial magnetic field.
Thus, the present method amplifies the Iow-level sound harmonics, but to a
larger
1o extent for auditive perception and thus permit extremely clear sound
reproduction. The speed of sound execution of this method is characterised by
the absence of inertia and mechanical viscosity as it is executed by the
solenoid
without any apparent mechanical movernent. Sound emission is therefore
effected by firstly agitating the molecules iri space, and secondly, according
to
the types of methods of winding, can be effected by the sound micro-vibrations
of
electric wires or solenoids.
A variant of the method is a solenoid added to at Ieast one magnet inside or
outside which has its effect but reduces its sensitivity owing to the residual
magnetism of the magnetic field of the magnet which imposes its magnetic field
constant masking the terrestrial magnetic fieWd.
The invention also relates to a device that improves an audio sound emitted by
at
least one acoustic baffle, the device delivering an electric signal to the at
least
one acoustic baffle, the device comprising (i) means for superimposing on the
audio sound refined sound information contained in a source signal of the
audio
sound; and (ii) at least one coil of wire in free ambient air to which is
supplied an
electric signal, which is the same of the signal of the device delivers to the
at
least one acoustic baffle, wherein the device is adapted to provide a harmonic
amplifying electro-acoustic transducer to supplement at least one of electro-
acoustic baffles and a transducer.
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CA 02340072 2007-03-06
These and other aspects and features of the present invention will now become
apparent to those of ordinary skill in the art upon review of the following
description of specific embodiments of the invention in conjunction with the
accompanying drawings.
Brief description of the drawings
A detailed description of specific embodiments of the present invention is
provided herein below, by way of example only, with reference to the
accompanying drawings, in which:
Figure 1 shows a device in accordance with an embodiment of the present
invention; and
Figure 2 shows an acoustic chamber in which the device of Figure 1 is
integrated.
In the drawings, the embodiments of the invention are illustrated by way of
examples. It is to be expressly understood that the description and drawings
are
only for the purpose of illustration and are ari aid for understanding. They
are not
intended to be a definition of the limits of the invention.
Detailed description of the embodiments
Shown in Figure 1 is a device 10 made up of at least one winding of electric
wires
1, 1/10th of a millimeter being wound onto a flexible polymer support 2, 10 cm
long and having a diameter of 0.8 cm. The impedance of this winding is 8 Ohms
and winding is characterised in that each layer 3, 4 is wound in the same
winding
direction, the return wire 5 being placed along the winding.
This winding method allows micro-vibrations between the spires given the fact
of
the tension difference between the spires of the first and second layer. These
micro-vibrations take part in the sound amplification of the harmonics. This
device
is connected to an electric audio signal of an acoustic chamber or an acoustic
supply. This device complements normal electro-acoustic transducers. This
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CA 02340072 2007-03-06
device is produced by a specialist in this field and represents a non-
restrictive
example of the embodiment of this method.
As shown in Figure 2, the device 10 is integrated in an acoustic chamber 8 in
front of the façade 9. The electro-acoustic transducer solenoid 2 of the
device 10
is mounted free in the ambient air next to the tweeter 11. It is mounted on
the
facade 9 and supported mechanically by two screws 12 and is mounted
electrically with the tweeter 11 by the electric wires 5, 6 derived from the
electro-
acoustic filter 7.
The winding of the electric wire can have any type of shape, having for
example a
round, conical or square section or take any other shape. This mounting does
not
restrict the applications of the device. This new electro-acoustic transducer
could
be mounted directly on the general audio power supply between the amplifier
and
the acoustic chamber.
These new electro-acoustic transducers can be mounted in series or in parallel
or
both.
These acoustic transducers are harmonic amplifiers.
The present method and electro-acoustic device limited to a winding of a no-
membrane electric wire provide unequalled acoustic fineness. Several windings
of one onto another also constitute an electro-acoustic transducer of the same
type as the one submitted in the present method but whose embodiment is more
complex.
This device and method can be used on all audio and audio-video systems and in
any method of communication, such as telephones, radio, as well as by the
medical profession for improving the auditive comfort of deaf persons.
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