WO2020002819A1

WO2020002819A1 - Detachable electronic emulation device that can be attached to an acoustic drum

Info

Publication number: WO2020002819A1
Application number: PCT/FR2019/051551
Authority: WO
Inventors: Jérôme DRON
Original assignee: Redison
Priority date: 2018-06-28
Filing date: 2019-06-25
Publication date: 2020-01-02
Also published as: FR3083361A1; FR3083361B1

Abstract

The invention relates to a detachable and hybrid electronic emulation device (100) which is intended to be attached to a flat surface (SP) and allows an emulation of at least one sound of a drum-type percussion instrument by means of at least one striking element, in which said device (100) comprises a rigid support (10) forming a frame for tensioning a skin (20) having a striking surface (21) on the upper face (20a) thereof, with which the user interacts when striking with said at least one striking element, and in which said device (100) comprises at least one vibration sensor (31) positioned beneath the lower face (20b) of the skin (20) and designed to generate a striking computer signal containing at least one piece of information relating to the vibrations induced by the striking of said at least one striking element on the striking surface (21).

Description

REMOVABLE ELECTRONIC EMULATION DEVICE CAPABLE OF FIXING

ON ACOUSTIC BATTERY

Technical field and prior art

The present invention relates to the field of musical instruments, and more particularly to the field of percussion instruments.

One of the objects of the present invention is to provide musicians, and more particularly drummers, with a simple and easily transportable accessory which can be fixed on any flat surface or even on an acoustic drum tom to allow emulation. of a sound and thus play the drums where you want without disturbing your neighborhood.

The present invention finds many advantageous applications in the field of batteries. Obviously, other advantageous applications can also be envisaged for other percussion instruments.

Musicians (here drummers) currently have several solutions available to them for playing drums.

We mainly distinguish the following families:

so-called acoustic batteries;

so-called electronic batteries; and

so-called virtual batteries or also called "air batteries".

The acoustic drums have a classic configuration and are composed of one or more toms and / or one or more cymbals.

Classically, by tapping each of these elements using drumsticks and / or pedals, the musician generates a sound associated with each tom or each cymbal.

Acoustic drums have many advantages, especially for the musician who has real pleasure and real playing comfort. Musicians also appreciate acoustic drums since they are the only ones to provide a sound that can be described as natural.

Finally, note that the acoustic batteries do not require any computer device or any power source to operate.

On the other hand, acoustic batteries have significant drawbacks such as being very bulky and heavy to transport.

These batteries are therefore mainly intended for sedentary use. They are also noisy for normal use.

It is therefore difficult to play the drums, for example in an apartment, this both for reasons of neighborhood and for reasons of space.

For the same reasons, it will be understood that it is also difficult to play the acoustic drums on the street or away from home.

Electronic drums are also made up of one or more toms and one or more cymbals. Da typically, each of the components of the electronic battery is instrumented by one or more electronic sensors.

Generally, the sensors used are piezoelectric sensors.

By tapping each of the battery cells using drumsticks and / or pedals, the various sensors generate an electronic signal specific to each of these cells.

The signals generated by the system are then sent to a control and sound generation module directly attached to the battery.

The signals used are MIDI type signals.

Many models of electronic drums also allow MIDI signals to be transmitted to third-party devices.

The playing comfort of these electronic drums is very significant.

By integrating this electronics, the batteries offer the possibility of modulating the sound volume; they also offer the possibility of changing sounds, recording a melody played on an electronic medium or interacting with different software.

On the other hand, as with acoustic batteries, these electronic batteries are always as bulky and heavy to transport.

It will also be noted that these batteries require a power supply and sound amplification or listening equipment to listen to the play induced by the strikes on the elements of the battery.

Virtual batteries, for their part, represent a new generation of batteries which respond both to the problem of congestion mentioned above and the problem linked to noise pollution from acoustic batteries.

These virtual batteries are made up of sticks, pedals and electronic sensors fixed on these striking elements.

In terms of the game, the musician takes these striking elements and mimics the game by tapping in the air on invisible areas. The movements of his sticks are then computerized into sounds using third-party devices (computer or smartphone) and this in real time.

One of the main drawbacks of "air batteries" is that the musician bangs in the air and cannot benefit in his play from the force feedback linked to the rebound of the stick on a battery element.

It is not a natural game, but a mime of the drummer game, which makes it unattractive for real musicians who necessarily need this force feedback to maintain the pleasure and comfort of play provided by acoustic drums and electronic drums.

Document US 2014/0216234 A1 is known which proposes an electronic battery having a detachable battery head integrating: - on-board electronics including a strike detection system and - a fixing mechanism making it possible to easily fix said head on the support of drums.

The Applicant submits that this document only teaches an electronic battery, the upper part of which is detachable. The head of the electronic drum kit cannot function independently for a mobile game.

The Applicant submits that none of the solutions on the market can meet all of the musicians' requirements, namely the supply of a battery combining the qualities of acoustic drums, electronic drums and virtual drums. In other words, there are no systems allowing a nomadic musician to play where he wants as for virtual drums while maintaining the pleasure of playing acoustic drums and the advantages of electronic drums. None of the batteries on the market offer a simple and satisfactory solution offering real enjoyment of the game while allowing nomadism and offering the advantages of the electronic functionalities offered by electronic batteries.

Summary and object of the present invention

The present invention aims to improve the situation described above.

One of the objectives of the present invention is to remedy the various drawbacks mentioned above by proposing, according to a first aspect, a removable electronic emulation device which is intended to be fixed on a flat surface and in particular a tom of acoustic drum and which allows emulation of at least one percussion instrument sound of the drum type using at least one striking element.

Advantageously, the device according to the present invention comprises a rigid support forming a frame for tensioning a skin having on its upper face a striking surface with which the user interacts during a striking with the at least one striking element.

Advantageously, the device according to the present invention comprises at least one vibration sensor positioned under the underside of the skin and configured to generate a computerized striking signal containing at least information relating to the vibrations induced by the striking of the at least element. on the striking surface.

By proposing a removable emulation device making it possible to emulate a sound by measuring the vibrations induced by the striking of the striking element on the skin, the musician has an easily transportable accessory which he can come fix anywhere where and especially on a drum tom to play music wherever he wants.

By attaching the device to an acoustic drum tom, the musician easily transforms his acoustic drum into an electronic drum, which allows him, for example, to soundproof his battery and / or to obtain the functionality specific to electronic drums.

The fact that this device is removable allows it to remove it from the tom and take it outside to play the drums elsewhere by simply fixing it on a flat surface.

Musicians thus have an emulation of their percussion instrument without having to have bulky equipment (toms, cymbals, etc.). The present invention, thanks to the generation of one or more sound signals, allows musicians to play with a minimum of equipment and to record their performance without having to place microphones and / or without having to go through an electronic drum kit. .

Advantageously, the device according to the present invention comprises a central unit electrically connected to the at least one vibration sensor and configured to convert the striking signal received from the at least one sensor into a musical signal containing information relating to a his.

Advantageously, the device according to the present invention comprises wireless communication means electrically connected to the central unit and capable of communicating with a communication terminal implementing emulation software capable of emulating a sound as a function of the musical signal. This or these sensors, this central unit and the wireless communication means constitute the on-board electronics of the device and preferably come to be housed inside said device, and more precisely inside the volume defined by the support.

In an advantageous embodiment, the support is equipped at the periphery with a tightening circle configured to adjust the tensioning of the skin.

Preferably, the skin is composed at least partially of an elastically deformable material capable of at least partially absorbing the vibrations induced by the striking of the at least one striking element on the striking surface while optimizing the rebound of the at least one striking element on the striking surface.

In an advantageous embodiment, the device according to the present invention comprises at least two vibration sensors including a first vibration sensor positioned under the central part of the striking surface and a second vibration sensor positioned under the peripheral part of the surface typing.

The central part of the striking surface defines a first striking zone and the peripheral part of the striking surface defines a second striking zone, each zone corresponding to a determined sound. The definition of these striking zones on a tangible support makes it possible to ensure the musicians the comfort and the pleasure of play awaited by the musicians, and distinguishes the present invention from the current systems proposed with the "air batteries".

Preferably, the vibration sensor is a piezoelectric sensor.

The integration of such a sensor makes it possible to obtain reliable information relating to the impact of the strike on the skin (intensity, location, etc.) in order to precisely determine the sound to be emulated.

In another advantageous embodiment, the at least one vibration sensor comprises a flat membrane having a detection surface extending under all or part of the skin.

Preferably, this membrane is in direct contact with the lower surface of the skin.

Advantageously, this membrane has at least two independent concentric zones, preferably three, each defining a striking zone of the striking surface, each of the concentric zones being capable of generating a different computer striking signal.

Preferably, each zone of said membrane comprises an electronic detection circuit formed by an insulating support on which extends without overlapping at least one conductive wire forming the tracks of said circuit. Advantageously, said insulating support is flexible.

Preferably, the membrane has a thickness substantially equal to 2 millimeters.

Advantageously, the support comprises fixing means configured to solidly fix the device to a drum tom. The implementation of these fixing means ensures easy fixing of the support on a tom.

In a particular embodiment of the present invention, the fixing means comprise a receiving groove capable of receiving the peripheral edges of the upper portion of the tom of the battery and, preferably, a jaw system mounted on a spring (or equivalent ) adapted to allow the peripheral edges of the upper portion of said drum tom to be clamped against the groove in order to secure the device with said tom.

It is enough for the musician before playing to position the support so that the groove is facing the peripheral edges of the tom in order to insert these into the groove to ensure the assembly of the device on top of the tom.

Preferably the fixing means comprise a locking mechanism configured to lock the support in position against the tom of the battery when the peripheral edges of the upper portion are engaged in the groove.

Once engaged in the groove, the musician secures the assembly by actuating the locking mechanism. Preferably, the locking mechanism implements a screw / nut system. Other variants can also be envisaged, such as another system providing mechanical locking or a magnetic locking system or the like.

Preferably, the device according to the present invention comprises a visual interface integrated into the frame of the support and implementing at least a first light source, such as for example an LED source, capable of flashing, said first light source being actuable by said central processing unit on reception of a strike signal from said at least one sensor.

The flashing of this light source makes it possible to indicate and / or confirm to the user, the musician, that the striking surface has been correctly touched by the striking element.

Preferably, the visual interface implements a metronome whose rhythm is provided by the flashing of a second light source of LED type for example. Correlatively, the object of the present invention relates according to a second aspect to an assembly comprising:

- an electronic emulation device as described above, capable of being removably attached to a drum tom and of generating, when striking at least one striking element on a striking surface of said device, a musical signal containing information relating to a sound as a function of a computer typing signal generated by said at least one sensor; and

a communication terminal implementing emulation software capable of emulating a sound as a function of the musical signal.

Thus, the present invention, by its various functional and structural technical aspects described above, makes it possible to provide musicians with a transportable accessory offering good comfort and good playing comfort while retaining the advantages of an electronic drum kit.

Brief description of the attached figures

Other characteristics and advantages of the present invention will emerge from the description below, with reference to the appended figures 1a-1b to 7 which illustrate an embodiment thereof devoid of any limiting nature and in which:

Figures la and lb each schematically show a schematic view of an electronic device for emulating a drum sound according to an exemplary implementation of the present invention;

2 shows a schematic top view of a device according to Figure 1 in which we distinguish the positioning of the vibration sensors relative to the striking surface of the skin according to the embodiment of the present invention;

3 shows a schematic perspective view of an assembly comprising an acoustic drum tom on which there is fixed an emulation device according to Figure 1;

FIG. 4 represents a schematic view of an exemplary implementation of the on-board electronics in an emulation device in accordance with FIG. 1; FIG. 5 represents a schematic top view of a membrane serving as a vibration sensor according to an exemplary embodiment of the present invention; FIG. 6 represents a partial perspective view of an electronic device for emulating a drum sound according to an exemplary implementation of the present invention;

FIG. 7 represents a schematic top view of an electronic device for emulating a drum sound in accordance with FIG. 6.

Detailed description according to an advantageous exemplary embodiment

A device for emulating the sound of a drum instrument according to an exemplary embodiment will now be described in what follows with reference to Figures la-lb to 7.

As a reminder, one of the objectives of the present invention is to maintain the comfort and the enjoyment of play offered by acoustic drums while offering the advantages of both a virtual drum (reduced size, little equipment required, interactivity) and an electronic drum kit (sound modulation, learning, recording, etc.).

One of the other objectives of the present invention is to be able to easily transform an acoustic drum into an electronic drum.

This is made possible in the following example.

Beforehand, it will be specified here that the example described relates to batteries. It will be understood that a person skilled in the art can apply the invention to other percussion instruments.

In the example described here and as illustrated in Figures la-lb to 7, there is available in the context of the present invention an electronic emulation device 100 which is removable.

Such removableness is characteristic of the present invention and allows a nomadic musician to grab his device 100 to play music wherever he wishes, at home, in the street, at a friend's house, etc.

To this end, such a device 100 includes a support 10.

In the example described here, such a support 10 is formed by two parts lOa and lOb which can be snapped into each other and which thus make it possible to form a crown (or frame) enclosing a skin 20.

In this example, the frame makes it possible to tension the skin 20. There is also provided a tightening circle 11 making it possible to adjust this tension according to the playing preferences of the musician. Such a skin 20 comprises an upper face 20a presenting itself as the user interface which is intended to interact with the striking elements of the musician, here the sticks (not shown).

The musician therefore strikes the striking surface 21 of the skin 20 on the upper face 20a to play his instrument as the latter conventionally does with an acoustic drum.

To improve the musician's experience and achieve the comfort and pleasure of playing acoustic drums, provision is made to design a skin 20 in a suitable material such as an elastically deformable material to absorb the vibrations induced by the striking of the sticks on the striking surface 21 and offer a good rebound of the sticks.

In order to combine the advantages of acoustic batteries and electronic batteries, an electronic module 30 is provided, as illustrated in FIG. 4, embedded in the volume defined between the skin 20 and the support 10.

In the example described here and illustrated in FIG. 4, the electronic module 30 comprises a first 31a and a second 3 lb vibration sensors of the piezoelectric sensor type.

Each of these sensors 31a and 3 lb is configured to generate a computerized striking signal containing at least information relating to the vibrations induced by the striking (s) of the stick (s) on the striking surface 21.

In the example described here and as illustrated in FIG. 2, the integration of the first sensor 3a is done on the underside 20b of the skin 20 under the central part 2 la of the striking surface 21 and the integration of the second sensor of 3 lb is made on the underside 20b of the skin 20 under the peripheral part 2lb of the striking surface 21.

In this example, it is therefore possible to generate two types of sound (or note) from the same device 100. Those skilled in the art will understand that this is one example among many possible and that it is possible to envisage several sensors and therefore several zones in order to be able to emulate several different sounds.

Thus, other examples of implementation can be envisaged, such as for example the implementation under the lower face 20b of the skin 20 of a detection membrane 3c which is specifically configured for striking detection and which is used here to vibration sensor 31, as illustrated in FIG. 5.

According to this FIG. 5, the membrane 3 le used for such a sensor 31 is planar and has a detection surface extending under all or part of the skin 20, in direct contact with the latter. In this example, and as illustrated in FIG. 5, this membrane 3 has three concentric zones 31 cl, 3lc_2 and 3lc_3 which are structurally independent from each other and which each correspond to striking zones Zl, Z2 and Z3 of the striking surface 21.

We understand here that by hitting each of its zones we generate a different detection signal.

In this example and as illustrated in FIG. 5, each zone 31 c l, 3lc_2 and 31c_3 comprises an electronic detection circuit 35 formed by an insulating support 36 which is made of a flexible and thin material. It may for example be a thermoplastic polymer chosen from a polyimide such as for example a polyimide of the KAPTON type, a polyester, a PET, a PBT or a PEN.

During its manufacture, the tracks of each circuit 35 are formed by a single conductive wire 37 extending without overlapping on said insulating support 36.

For example, the conductive wire is made of a stainless, malleable and ductile material such as for example copper, tin or even aluminum.

We proceed for example by the implementation of a conductive wire extends in a slot along the support, this without overlapping or point of contact.

The implementation of such a sensor 3 under the skin 20 makes it possible to define several Zl, Z2 and Z3 on the striking zone, such a sensor 3 allowing it to detect strikes well.

The objective here being to generate a sound as a function of the striking on one of the striking zones, the device 100 according to the present invention is configured to emulate at least one percussion instrument sound of the drum type using at least one baguette.

In this example, the electronic module 30 therefore comprises a central unit 32 capable of converting the keystroke signal received from one of the sensors 31 a or 3 lb or 31 c into a musical signal containing information relating to a sound (or a note).

This musical signal is then transmitted by wireless communications means 33 to a communication terminal T (or computer) implementing emulation software capable of emulating a sound as a function of the musical signal. It will be understood here that such a musical signal is an intelligible signal such as for example an M1DI signal.

Those skilled in the art will understand here that it is also possible to provide wired communication between the device 100 and the communication terminal T.

Preferably, the two types of wired or wireless connection can be envisaged simultaneously. In this configuration, an actuator is provided for switching from one mode to another. We then have a hybrid accessory that can go from a wired mode (in particular for soundproofing an acoustic drum for example) in a wireless mode (for example for a nomadic application).

The various data collected by the sensors 3 la and 3 lb or 3 are subject to real-time computer processing by the central unit 32 and are then sent to the communication terminal T via the communication means 33.

In this example and as illustrated in FIG. 6, there is also provided an interface 13 integrated in the frame of the support 10 and implementing at least a first LED source 13A capable of flashing during the reception by the central unit of a signal strike from said at least one sensor 31

Still in this example, provision is also made for the implementation of a second LED source 13B connected to a metronome (not shown here) and making it possible to provide a rhythm to be followed by the musician.

It will be understood here that the LED sources 13A and 13B can be of different colors to distinguish them. The terminal T can then, using a dedicated software application, perform the following operations and in particular:

emulate the sound of a battery;

record the drummer's play for future musical exploitation;

follow its tempo;

appreciate the precision of the strikes;

follow the progress of the drummer.

There are also provided in the electronic module 30 electrical supply means 34 such as for example a battery. The integration of such a battery 34 ensures the autonomy of the device 100 in the event of nomadism.

Connections 14 are also provided at the level of the frame as illustrated in FIG. 6 for electric charging of said battery, for example via a USB cable or the like.

Ensuring a reversible fixing of the device 100 is characteristic of the present invention.

Fixing means 12 are provided for this purpose.

These fastening means 12 can for example comprise a set of suction cups (not shown here) for fixing the device 100 on a flat surface. Other fixing methods for a flat surface SP can be envisaged by a person skilled in the art.

In the example described here, it is further provided that the fixing means 12 can be configured to securely fix the device 100 to an acoustic drum tom TB as illustrated in FIG. 3. In the example described here, the fastening means 12 comprise a receiving groove 12a capable of receiving the peripheral edges BP of the upper portion of the battery tom TB.

It is understood here that the support 11 has substantially the same shape and the same dimensions as a TB battery tom.

It then suffices for the musician to position the emulation device 100 so that the receiving groove l2a is opposite the upper portion of the drum tom TB and to bring the two elements together so that the peripheral edges BP tom TB which are protruding are housed in the throat l2a.

This embodiment provides simple mechanical assembly of the device 100 and the TB battery tom. Obviously, it is understood here that a person skilled in the art can envisage other embodiments for ensuring this assembly.

To guarantee the locking in position of the device 100 on the tom TB, it is planned to implement a locking mechanism (not shown here). It can for example be a screw / nut system or any other type of mechanism.

The musician by carrying out the assembly of the device 100 on his TB drum toms can thus transform his acoustic drum into an electronic drum to play at home without disturbing his neighborhood with the noise nuisance inherent in the drum.

The device 100 being removable and easily removable, the latter can then separate the device 100 from the toms to recover the system alone and thus play nomadically when leaving his home.

The object of the invention is presented as a removable musical interface allowing a musician to play with striking elements as he usually does. When hitting the hitting surface, the hitting element triggers a computer signal on each impact. The integration of sensors under the skin makes it possible to transcribe the impacts and vibration into an intelligible computer signal for external software or applications.

This signal is sent instantly to third-party software (smartphone application or computer software) either wirelessly or via electronic cable.

The present invention therefore provides a removable, wireless emulation device for drummers. The electronics embedded in this device implements a sensor in the form of a membrane placed under the skin and composed of three independent concentric zones making it possible to detect the striking zones in order to trigger a computer signal specific to each zone.

The present invention therefore presents itself as a hybrid percussion instrument, making it possible both to play the drums anywhere and to soundproof any drums acoustic. This device also allows you to make electronic drums by using your smartphone or computer as a control module.

It should be observed that this detailed description relates to a particular embodiment of the present invention, but that in no case this description is not in any way limiting on the subject of the invention; on the contrary, it aims to remove any possible inaccuracy or misinterpretation of the claims which follow.

It should also be observed that the reference signs put in brackets in the claims which follow are in no way limiting; the sole purpose of these signs is to improve the intelligibility and understanding of the claims which follow, as well as the scope of the protection sought.

Claims

1. Removable electronic emulation device (100) intended to be fixed on a flat surface (SP) and allowing emulation of at least one percussion instrument sound of the drum type using at least one element typing,

said device (100) comprises:

- a rigid support (10) forming a frame for tensioning a skin (20) having on its upper face (20a) a striking surface (21) with which the user interacts during a striking with said at least one striking element; at least one vibration sensor (31) positioned under the underside (20b) of the skin (20) and configured to generate a computerized strike signal containing at least information relating to the vibrations induced by said strike of said at least strike member on the striking surface (21);

a central unit (32) electrically connected to said at least one vibration sensor (3 la, 31 b) and configured to convert the strike signal received from said at least one sensor (3 la, 31 b) into a musical signal containing information relating to a sound; and

wireless communication means (33) electrically connected to said central unit (32) and able to communicate with a communication terminal (T) implementing emulation software capable of emulating a sound as a function of the musical signal.

2. Device (100) according to claim 1, wherein said support (10) is equipped at the periphery of a tightening circle (11) configured to adjust the tensioning of the skin (20).

3. Device (100) according to claim 1 or 2, wherein said skin (20) is composed at least partially in an elastically deformable material capable of at least partially absorbing the vibrations induced by the striking of said at least striking element on said striking surface (21) while optimizing the rebound of said at least one striking element on said striking surface (21).

4. Device (100) according to any one of the preceding claims, which comprises two vibration sensors (3 la, 31 b) including a first vibration sensor (31a) positioned under the central part (21a) of the striking surface (21) and a second vibration sensor (3 lb) positioned under the peripheral part (21 b) of the striking surface (21).

5. Device (100) according to any one of the preceding claims, in which said at least one vibration sensor (3 la, 3 lb) is a piezoelectric sensor.

6. Device (100) according to any one of claims 1 to 3, wherein said at least one vibration sensor (31) comprises a flat membrane (3 le) having a detection surface extending under all or part of the skin (20).

7. Device (100) according to claim 6, wherein said membrane (31c) is in direct contact with the lower surface (20b) of the skin (20).

8. Device (100) according to claim 6 or 7, wherein said membrane (3 le) has at least two concentric zones (31 cl; 3lc_2; 3lc_3) independent, preferably three, each defining a striking zone (Zl, Z2, Z3) of the striking surface (21), each of the concentric zones being able to generate a different typing computer signal.

9. Device (100) according to claim 8, wherein each zone (31 c l; 3lc_2;

3 lc_3) of said membrane (31c) comprises an electronic detection circuit (35) formed by an insulating support (36) on which extends without overlapping at least one conductive wire (37) forming the tracks of said circuit (35).

10. Device (100) according to any one of claims 6 to 9, in which said insulating support (36) is flexible.

11. Device (100) according to any one of claims 6 to 10, wherein said membrane (31c) has a thickness substantially equal to 2 millimeters.

12. Device (100) according to any one of the preceding claims, in which said support (10) comprises fixing means (12) configured to securely fix said device (100) to a drum tom (TB).

13. Device (100) according to claim 12, in which the fixing means (12) comprise a receiving groove (12a) capable of receiving the peripheral edges (BP) of the upper portion of said drum tom (TB) and a spring-mounted jaw system capable of enclosing the peripheral edges (BP) of the upper portion of said battery tom (TB) against the groove (12a) in order to secure said device (100) with said tom (TB) .

14. Device (100) according to any one of the preceding claims, which comprises a visual interface (13) integrated in the frame of the support (10) and implementing at least a first light source (13A), such as for example an LED source, capable of flashing, said first light source (13A) being actuable by said central unit (32) on reception of a strike signal coming from said at least one sensor (31).

15. Device (100) according to claim 14, wherein said visual interface (13) implements a metronome whose rhythm is provided by flashing of a second light source (13B).

16. Set (200) comprising:

- an electronic emulation device (100) according to any one of the preceding claims capable of being removably attached to a battery tom (TB) and to generate, when striking at least one striking element on a striking surface (21) of said device (100), a musical signal containing information relating to a sound as a function of a computer striking signal generated by said at least one sensor (31);

a communication terminal (T) implementing emulation software capable of emulating sound as a function of the musical signal.