EP4064720B1 - Modular audio playback device - Google Patents

Description

The invention relates to the field of audio reproduction equipment, and in particular connected speakers.

BACKGROUND OF THE INVENTION

A smart speaker typically includes a set of microphones and can be used to implement the voice recognition process of a virtual personal assistant.

It is possible that some users may be attracted to a particular model of such a smart speaker, but are not interested in voice recognition. In this case, the microphone array is useless and may even deter users from purchasing the smart speaker, for example because they consider the cost of the smart speaker too high compared to the use they make of it, or because the presence of the microphones bothers them.

Some users want to use the microphone array to benefit from voice recognition, and plan to position their connected speaker in a low position, for example on the floor or on a table, desk, sideboard, etc. It is therefore preferable for these users, to optimize the capture of sound signals, that the microphone array be positioned on an upper part of the connected speaker. Of course, when users plan to position their connected speaker in a high position, for example on top of a shelf, it is preferable that the microphone array be positioned on a lower part of the speaker.

Some users intend their connected speaker for "sedentary" use, the connected speaker therefore remaining powered by the mains, while others prefer portable use, so the presence of a battery is necessary.

It is therefore very difficult for the user to find a connected speaker that precisely meets their expectations, both in terms of available features and cost. The choice is all the more complicated because it is irrevocable: once the user has chosen a product, it is generally impossible for them to add new features to it.

It is also complicated for the manufacturer to define the products it designs. The most obvious solution to satisfy all users would be to market many different products, each with distinct functionalities (a "simple speaker" product, a "connected speaker" product, a product with a battery, etc.). However, this solution is expensive because the manufacture of each product requires a separate production line. Furthermore, this solution makes it impossible to extend the uses of a product that does not include optional functionalities (for example, the microphone set or the battery).

The document US 2016/269812 A1 unveils a known modular audio reproduction equipment, which comprises a main module that can operate individually or by being assembled with one or more additional modules.

SUBJECT OF THE INVENTION

The invention relates to audio reproduction equipment adapted to the wishes of a large majority of users and inexpensive to manufacture.

SUMMARY OF THE INVENTION

• des composants de restitution audio comprenant un haut-parleur principal ;
• des composants de communication principaux agencés pour mettre en œuvre au moins une communication sans fil ;
• des composants d'alimentation agencés pour acquérir une alimentation principale provenant du secteur et pour alimenter l'équipement à partir de l'alimentation principale ;
• des moyens d'assemblage principaux agencés pour assembler le module principal avec le ou les modules additionnels ;
• un composant de traitement agencé pour détecter si le module principal est assemblé avec le premier module additionnel et, si c'est le cas, pour activer au moins une fonction additionnelle mise en œuvre par l'équipement et utilisant le ou les microphones ;

• le premier module additionnel comportant de plus une batterie agencée pour alimenter l'équipement lorsque celui-ci n'est pas relié au secteur et que le module principal et le premier module additionnel sont assemblés,
• le premier module additionnel comprenant de plus des premiers composants de communication agencés pour communiquer avec les composants de communication principaux du module principal via la communication sans fil, le module principal étant agencé pour, lorsque le module principal et le premier module additionnel ne sont pas assemblés, recevoir via la communication sans fil des signaux audios produits par le ou les microphones du premier module additionnel pour mettre en œuvre la ou les fonctions additionnelles.

In order to achieve this goal, modular audio reproduction equipment is proposed comprising a main module arranged to operate individually or by being assembled with one or more additional modules comprising a first additional module comprising at least one microphone, the main module comprising:

• audio playback components including a main speaker;
• main communication components arranged to implement at least one wireless communication;
• power supply components arranged to acquire a main power supply from the mains and to power the equipment from the main power supply;
• main assembly means arranged to assemble the main module with the additional module(s);
• a processing component arranged to detect whether the main module is assembled with the first additional module and, if so, to activate at least one additional function implemented by the equipment and using the microphone(s);

• the first additional module further comprising a battery arranged to power the equipment when the latter is not connected to the mains and the main module and the first additional module are assembled,
• the first additional module further comprising first communication components arranged to communicate with the main communication components of the main module via wireless communication, the main module being arranged to, when the main module and the first additional module are not assembled, receive via the wireless communication of the audio signals produced by the microphone(s) of the first additional module to implement the additional function(s).

The main module is therefore the basic module of the different versions of the modular audio reproduction equipment according to the invention, which is for example a speaker.

The user who wishes to have equipment without a microphone therefore does not obtain the first additional module, whereas the user who wishes to implement a voice recognition process obtains said first additional module.

The main assembly means may optionally allow the first additional module to be positioned in a higher position above the main module or in a lower position below the main module, so that the user can adapt the equipment to its low position (on a table) or high position (on a shelf) to optimize the capture made by the microphones.

The first additional module includes a battery, possibly detachable from the microphones, so that the user can configure their speaker for sedentary use or for nomadic use.

The equipment according to the invention therefore makes it possible to satisfy the wishes of a large majority of users.

All these different configurations have in common a single basic module, which is the main module, which significantly reduces the design costs but also the manufacturing costs of the equipment. A relatively small number of additional modules makes it possible to meet the expectations of a very large number of users, which improves the attractiveness of the equipment and again reduces its cost.

Equipment as previously described is also proposed, the battery being arranged to power the first additional module when the latter is not connected to the mains and is not assembled with the main module.

Equipment as previously described is also provided, the first additional module comprising a first unit comprising the microphone(s) and a second unit comprising the battery, the first unit and the second unit being detachable and each being able to be assembled individually with the main module.

Equipment as previously described is also provided, the processing component being arranged to detect whether or not the main module is connected to the mains, and to adapt a power supply profile of the equipment according to the result of this detection.

Equipment as previously described is also provided, in which the main assembly means are arranged to allow the first additional module to be positioned as desired in an upper position above the main module or in a lower position below the main module.

Equipment as previously described is also provided, in which one of the upper or lower positions is a masking position in which the microphone(s) of the first additional module are masked.

Equipment as previously described is also provided, the main assembly means comprising a lip which extends around a periphery of the main module, the first additional module comprising a shoulder defining a recess on a periphery of the first additional module, the main module and the first additional module being arranged so that, when the main module and the first additional module are assembled according to the occultation position, the lip is positioned in the recess and occults the microphone(s) which are then acoustically isolated from the outside.

Also provided is equipment as previously described, in which pins, arranged to implement an electrical connection between the main module and the first additional module, extend from an internal surface of the lip.

Equipment as previously described is also provided, in which the additional modules comprise a second additional module comprising one or more additional speakers.

Also provided is equipment as previously described, in which the main speaker(s) comprise a midrange speaker and/or a treble speaker and in which the additional speaker(s) comprise a bass speaker.

Equipment as previously described is also provided, the processing component being arranged to detect whether or not the main module is assembled with the second additional module and to adapt an audio profile applied by the equipment according to the result of this detection.

Equipment as previously described is also provided, the equipment being an enclosure.

• de détecter si le module principal est assemblé avec le premier module additionnel ;
• si c'est le cas, d'activer la ou les fonctions additionnelles mises en œuvre par l'équipement et utilisant le ou les microphones.

A management method is also proposed, implemented in equipment as previously described and comprising the steps:

• to detect whether the main module is assembled with the first additional module;
• if so, to activate the additional function(s) implemented by the equipment and using the microphone(s).

• d'activer la communication sans fil pour tenter de détecter le premier module additionnel ;
• si le premier module additionnel est détecté, de connecter le module principal avec le premier module additionnel et d'activer la ou les fonctions additionnelles mises en œuvre par l'équipement et utilisant le ou les microphones.

We further propose a management method as previously described, further comprising the steps, if the main module is not assembled with the first additional module:

• to activate wireless communication to try to detect the first additional module;
• if the first additional module is detected, to connect the main module with the first additional module and to activate the additional function(s) implemented by the equipment and using the microphone(s).

• de détecter si le module principal est assemblé ou non avec un deuxième module additionnel comprenant un haut-parleur additionnel ;
• d'adapter un profil audio appliqué par l'équipement en fonction du résultat de cette détection.

We further propose a management method as previously described, further comprising the steps:

• to detect whether or not the main module is assembled with a second additional module comprising an additional speaker;
• to adapt an audio profile applied by the equipment based on the result of this detection.

• de détecter si le module principal est relié ou non au secteur pour son alimentation ;
• d'adapter un profil d'alimentation de l'équipement en fonction du résultat de cette détection.

We further propose a management method as previously described, further comprising the steps:

• to detect whether or not the main module is connected to the mains for its power supply;
• to adapt a power profile of the equipment based on the result of this detection.

• de détecter si le module principal est relié ou non au secteur pour son alimentation ;
• de détecter si le module principal est assemblé ou non avec le premier module additionnel;
• si le module principal n'est pas relié au secteur, d'activer un profil d'alimentation de l'équipement adapté à la présence de la batterie ;
• sinon, d'activer un profil d'alimentations adapté à l'alimentation via le secteur ;
• si le module principal est assemblé avec le premier module additionnel, d'activer la ou les fonctions additionnelles mises en œuvre par l'équipement et utilisant le ou les microphones ;
• si le module principal n'est pas assemblé avec le premier module additionnel :
  • d'activer la communication sans fil pour tenter de détecter le premier module additionnel ;
  • si le premier module additionnel est détecté, de connecter le module principal avec le premier module additionnel et d'activer la ou les fonctions additionnelles mises en œuvre par l'équipement et utilisant le ou les microphones. On propose aussi un support d'enregistrement lisible par ordinateur, sur lequel est enregistré le programme d'ordinateur tel que précédemment décrit.

A computer program is also provided comprising instructions that drive the processing component of the main module of the equipment as above. describes how to perform the steps:

• to detect whether or not the main module is connected to the mains for its power supply;
• to detect whether the main module is assembled or not with the first additional module;
• if the main module is not connected to the mains, to activate an equipment power profile adapted to the presence of the battery;
• otherwise, activate a power profile suitable for mains power;
• if the main module is assembled with the first additional module, to activate the additional function(s) implemented by the equipment and using the microphone(s);
• if the main module is not assembled with the first additional module:
  • to activate wireless communication to try to detect the first additional module;
  • if the first additional module is detected, to connect the main module with the first additional module and to activate the additional function(s) implemented by the equipment and using the microphone(s). A computer-readable recording medium is also provided, on which the computer program as previously described is recorded.

The invention will be better understood in light of the following description of a particular, non-limiting embodiment of the invention.

BRIEF DESCRIPTION OF THE DRAWINGS

• [Fig. 1] la figure 1 représente un module principal et un premier module additionnel selon un premier mode de réalisation d'une enceinte connectée qui n'est pas assemblée ;
• [Fig. 2] la figure 2 représente l'enceinte connectée assemblée, le module principal étant positionné au-dessus puis au-dessous du premier module additionnel ;
• [Fig. 3] la figure 3 représente une liaison Bluetooth entre le module principal et le premier module additionnel lorsque ceux-ci ne sont pas assemblés ;
• [Fig. 4] la figure 4 représente l'enceinte connectée assemblée, le module principal étant positionné au-dessous puis au-dessus d'un premier module additionnel selon un deuxième mode de réalisation ;
• [Fig. 5] la figure 5 représente l'enceinte connectée non assemblée, le module principal étant positionné au-dessus d'un premier module additionnel selon un troisième mode de réalisation ;
• [Fig. 6] la figure 6 représente un module principal et un deuxième module additionnel d'une enceinte qui n'est pas assemblée ;
• [Fig. 7] la figure 7 représente l'enceinte assemblée, le module principal étant tout d'abord positionné au-dessus du deuxième module additionnel qui lui-même est positionné au-dessus du premier module additionnel, puis le premier module additionnel étant positionné au-dessus du module principal qui lui-même est positionné au-dessus du deuxième module additionnel ;
• [Fig. 8] la figure 8 est un graphique comprenant une courbe de réponse en fréquence d'une enceinte comprenant uniquement le module principal ;
• [Fig. 9] la figure 9 est un graphique comprenant une courbe de réponse en fréquence du module principal et du deuxième module additionnel lorsqu'ils sont utilisés conjointement ; [Fig. 10] la figure 10 représente différentes configurations possibles de l'enceinte ;
• [Fig. 11] la figure 11 représente l'enceinte connectée non assemblée, le module principal étant positionné au-dessous du premier module additionnel ;
• [Fig. 12] la figure 12 est une vue de dessus de l'un des modules ;
• [Fig. 13] la figure 13 représente des étapes du procédé de gestion selon l'invention.

Reference will be made to the attached drawings, including:

• [ Fig. 1 ] there Figure 1 represents a main module and a first additional module according to a first embodiment of a connected speaker which is not assembled;
• [ Fig. 2 ] there Figure 2 represents the assembled connected speaker, the main module being positioned above then below the first additional module;
• [ Fig. 3 ] there Figure 3 represents a Bluetooth connection between the main module and the first additional module when they are not assembled;
• [ Fig. 4 ] there Figure 4 represents the assembled connected speaker, the main module being positioned below then above a first additional module according to a second embodiment;
• [ Fig. 5 ] there Figure 5 represents the unassembled connected enclosure, the main module being positioned above a first additional module according to a third embodiment;
• [ Fig. 6 ] there Figure 6 represents a main module and a second additional module of an enclosure that is not assembled;
• [ Fig. 7 ] there Figure 7 represents the assembled enclosure, the main module being first positioned above the second additional module which itself is positioned above the first additional module, then the first additional module being positioned above the main module which itself is positioned above the second additional module;
• [ Fig. 8 ] there figure 8 is a graph comprising a frequency response curve of a speaker comprising only the main module;
• [ Fig. 9 ] there Figure 9 is a graph comprising a frequency response curve of the main module and the second additional module when used together; [ Fig. 10 ] there Figure 10 represents different possible configurations of the enclosure;
• [ Fig. 11 ] there Figure 11 represents the unassembled connected enclosure, the main module being positioned below the first additional module;
• [ Fig. 12 ] there Figure 12 is a top view of one of the modules;
• [ Fig. 13 ] there Figure 13 represents steps of the management method according to the invention.

DETAILED DESCRIPTION OF THE INVENTION

In reference to the Figure 1 , the modular audio reproduction equipment according to the invention is here a speaker. The speaker firstly comprises a main module 1.

The main module 1 is itself a separate piece of equipment, which can operate individually or by being assembled with one or more additional modules.

The main module 1 here has a cylindrical shape, although other shapes are possible, such as for example a right prism.

The main module 1 firstly comprises audio reproduction components. The audio reproduction components comprise at least one main loudspeaker, in this case a plurality of main loudspeakers 2, and electronic components 3 arranged to process and transmit audio signals emitted to the main loudspeakers 2 which reproduce them by generating sound signals.

The main speakers 2 here comprise at least one treble speaker and at least one midrange speaker.

A midrange loudspeaker is a loudspeaker designed to reproduce intermediate frequency sounds, i.e. sounds whose frequency(ies) lie between low frequencies and high frequencies (i.e. between bass sounds and treble sounds).

A tweeter is a loudspeaker designed to reproduce high-frequency sounds. A tweeter can also be called a tweeter.

The electronic components 3 include in particular amplifiers. The electronic components 3 form several audio channels each connected to one or more main speakers 2.

The main module 1 further comprises main communication components 4 arranged to implement at least one wireless communication. Here, the main communication components 4 can communicate via Wi-Fi technology and via Bluetooth connections.

The main module 1 further comprises power supply components 5 arranged to acquire power from the mains. The power supply components 5 can be connected directly to the mains via a cable. The main module 1 can also acquire power from the mains by being mounted on a base itself connected to the mains via a cable.

The main module 1 also includes an interaction interface 6 comprising buttons and/or sensitive surfaces allowing interaction and/or control physical of the main module 1 and the speaker. Here, the interaction interface 6 only includes the play /pause buttons, but it could include other buttons or sensitive surfaces, for example prev / next buttons.

The main module 1 further comprises main assembly means arranged to assemble the main module 1 with one or more additional modules. It is therefore possible to secure one or more additional modules with the main module 1 to improve the enclosure which can then provide additional functionalities.

The main module 1 further comprises a processing component 7 which is adapted to execute instructions of a program to implement the management method which will be described below. The program is stored in a memory module 8 comprising one or more memories of different types (volatile, non-volatile) and connected or integrated in the processing component 7. The processing component 7 is for example a processor, a microcontroller, a DSP (for Digital Signal Processor ), or a programmable logic circuit such as an FPGA (for Field Programmable Gate Arrays ) or an ASIC (for Application Specific Integrated Circuit ) .

The processing component 7 detects that the main module 1 is connected to one or more additional modules and, if so, activates the additional functionalities associated with said additional modules. By "detects", it is meant that the processing component 7 itself directly detects the connection or disconnection, or that it acquires detection signals allowing it to determine whether there is a connection or disconnection.

The main module 1 can therefore be used alone, in which case it acts as a Wi-Fi/ Bluetooth speaker. The main module 1 can also be assembled with one or more additional modules.

Among these additional modules, there is a first additional module 10. A first additional module according to a first embodiment 10a is visible on the Figure 1 .

The first additional module 10a also has a cylindrical shape, with the same radius as that of the main module 1.

The first additional module 10a firstly comprises first assembly means, complementary to the main assembly means, for assembling the first additional module 10a to the main module 1.

The first additional module 10a further comprises a first unit 11 comprising at least one microphone, in this case a plurality of microphones 12. The microphones 12 are positioned on the periphery of the first additional module 10a (i.e. on the external lateral surface of the cylinder). More precisely, the orifices which allow the sensitive parts of the microphones 12 to be put into communication with the exterior open out at the periphery of the first additional module 10a.

The first unit 11 further comprises electronic components 13 arranged to acquire and process received audio signals produced by the microphones 12 when the latter capture sound signals.

The electronic components 13 include in particular one or more analog-digital converters which transform the analog signals produced by the microphones 12 into digital signals.

The first unit 11 also comprises first communication components 14 which implement at least one wireless communication, here a Bluetooth link.

The first additional module 10a also comprises a second unit 16 comprising a battery. According to the invention, the battery can power the enclosure when the main module 1 and the first additional module 10a are assembled, and the main module 1 is not connected to the mains.

When the main module 1 and the first additional module 10a are assembled, the main module 1 and the first additional module 10a are fitted together to form a single-piece connected speaker. The speaker can then implement the additional functions that can be performed on a connected speaker and that require the presence of microphones. The additional functions here include a voice recognition method and a hands-free telephony function.

Note that the first additional module 10a could possibly be used alone, as an A2DP Bluetooth microphone to be associated with a Bluetooth device (computer, smartphone, tablet, etc.).

It is also noted that the battery can be provided only to power the first additional module 10a when the latter is not assembled with the main module 1 and is therefore not connected to the mains.

In reference to the Figure 2 , the main assembly means allow the first additional module 10a to be positioned as desired in a lower position below the main module 1 (to the left of the Figure 2 ) or in a higher position above the main module 1 (to the right of the Figure 2 ).

Thus, the first additional module 10a and therefore the microphones 12 can be positioned in an ideal position depending on where the speaker is placed. If the speaker is placed in a high position relative to the user, for example on a high piece of furniture such as a shelf, the user will position the first additional module 10a in the lower position. If the speaker is placed in a low position relative to the user, for example on the floor or on a low piece of furniture such as a table or a sideboard, the user will position the first additional module 10a in the lower position.

It is noted that the position of the microphones 12 on the periphery of the first unit 11 here allows these two audio capture positions (high and low).

The presence of the battery and the first communication components 14 make it possible to easily move the first additional module 10a according to the user's convenience, in order to make the most of the voice assistant's functionalities.

The main module 1 and the first additional module 10a can thus be connected and cooperate without having to be assembled.

So, with reference to the Figure 3 , when the main module 1 and the first additional module 10a are not assembled, the main module 1 can receive received audio signals produced by the microphones 12 of the first unit 11 of the first additional module 10a to implement the additional functions using the microphones 12. The first additional module 10a is therefore remote, and the main module 1 and the first additional module 10a use a Bluetooth link 18 to communicate.

The main module 1 can thus be placed in a semi-fixed position, for example on a shelf, while the first additional module 10a can be positioned as close as possible to the user, for example on a table, a kitchen worktop, a desk, etc. This improves voice capture in a noisy environment, or when the main module 10a is not in direct proximity (but can still be heard from the user's position).

The first additional module 10a can also, for example, be placed on a table with participants around it, for conference-type functions.

When the main module 1 and the first additional module 10a are assembled, it is possible to make the microphones 12 concealable in order to meet the wishes of certain users.

One of the upper position or lower position of the first additional module 10a is a masking position in which the microphones 12 are masked and thus acoustically isolated from the outside, so that they cannot capture sound signals coming from the outside.

It is noted that the connection between the main module 1 and the first additional module 10a is preferably made via Bluetooth (for example by the A2DP protocol), but can also be made via Wi-Fi. The Bluetooth connection, through the use of a standard audio protocol, has the advantage of possibly being able to use the first additional module 10a as a microphone associated with another device (such as a PC), or another microphone module associated with the main module 1.

In reference to the Figure 4 , the microphones 12 of the first additional module according to a second embodiment 10b are here positioned on an upper face of the first additional module 10b.

The occultation position of the first additional module 10b is therefore the lower position here.

When the first additional module 10b is positioned in the upper position (on the left on the Figure 4 ), the microphone holes 12 open outwards and the microphones 12 capture the sound signals coming from outside. On the other hand, when the first additional module 10b is positioned in the lower position (on the right on the Figure 4 ), the 12 microphones are hidden and acoustically isolated from the outside.

This design makes it possible to use the microphones 12 (and therefore to implement the additional functions using the microphones 12) when the main module 1 and the first additional module 10b are assembled, but also when the first additional module 10b is remote.

The user can also, if he wishes to hide the 12 microphones, continue to benefit from the "nomadic" functions of the speaker, the battery still being present.

In reference to the Figure 5 , the microphones 12 of a first additional module according to a third embodiment 10c are again positioned on the periphery of the first additional module 10c.

It can be seen that the main assembly means of the main module 1 comprise a lip 20 which extends over the lower periphery of the main module 1, and a shoulder defining a recess 21 at the level of the upper perimeter of the main module 1.

The first additional module 10c comprises first assembly means also comprising a lip 22 which extends over the lower periphery of the first additional module 10c, and a shoulder defining a recess 23 at the level of the upper periphery of the first additional module 10c.

When the main module 1 and the first additional module 10c are assembled in the occulting position, that is to say when the first additional module 10c is in the lower position, the lip 20 of the main module 1 is positioned in the recess 23 and occults the microphones 12 which are then acoustically isolated from the outside.

In reference to the Figure 6 , the additional modules also comprise a second additional module 25 comprising a second loudspeaker 26. The second loudspeaker 26 is a bass loudspeaker.

A bass speaker is a loudspeaker designed to reproduce low-frequency sounds. A bass speaker can also be called a boomer or woofer.

The second additional module 25 also has a cylindrical shape, with the same radius as that of the main module 1.

Thus, the basic sound quality reproduced by the speaker can be improved by adding an optional woofer.

The enclosure can thus be assembled in accordance with the Figure 7 .

When the enclosure is to be positioned in a high position, for example on a shelf, the main module 1 is in the upper position, the first additional module 10 is in the lower position, and the second additional module 25 is between the main module 1 and the first additional module 10. On the contrary, when the enclosure is to be positioned in a low position, for example on a table, the first additional module 10 is in the upper position, the second additional module 25 is in the lower position, and the main module 1 is between the first additional module 10 and the second additional module 25.

Advantageously, it is provided that the speaker is capable of applying different audio profiles depending on the presence or absence of the second additional module 25 (and therefore of the bass speaker 26).

The processing component 7 of the main module 1 detects whether or not the main module 1 is assembled with the second additional module 25, and adapts the audio profile of the speaker (and in particular of the main module 1) according to the result of the detection.

For example, the frequency response of the main module 1 may be reduced when the second additional module 25 is present, in order to benefit, over the frequency range reproducible by both the main module 1 and the second additional module 25, from the better quality audio reproduction offered by the second additional module 25.

So, we see on the figure 8 curve 27 of the speaker frequency response when the second module additional 25 is not present (i.e. the frequency response of the main module 1).

We see on the Figure 9 curve 28 of the frequency response of the main module 1 and curve 29 of the frequency response of the second additional module 25 when the main module 1 and the second additional module 25 are assembled. The frequency response of the main module 1 is reduced in the bass.

Advantageously, the first unit 11 of the first additional module 10 (comprising the microphones 12) and the second unit 16 of the first additional module 10 (comprising the battery) are detachable and can each be assembled individually with the main module 1.

The combinations of the Figure 10 thus become possible.

Since the first unit 11 and the second unit 16 of the first additional module 10 are detachable, the first unit 11 can be assembled with the main module 1 (without the second unit 16) to obtain a connected speaker 30 capable of implementing the additional functions requiring the microphones 12.

The second unit 16 can also be assembled with the main module 1 (without the first unit 11) to obtain a portable speaker 31.

The first unit 11 and the second unit 16 can also both be detached and assembled with the main module 1 to obtain a portable connected speaker 32. It is also possible to use two second units 16, i.e. two batteries, to obtain a portable connected speaker 33 having double the battery life.

This way, you can avoid the cost of the battery when the speaker is systematically used in “sedentary” configuration (connected to the mains), or on the contrary improve the autonomy of the speaker in “nomadic” configuration by using one or more batteries.

We are now interested in the different connections between the modules when they are assembled.

We refer to the Figure 11 .

The electrical connection between the main module 1 and the first additional module 10 allows power transfer and data transfer.

The power transfer consists either of transferring from the main module 1 to the first additional module 10 a first power supply current under a first power supply voltage (produced by the mains) when the main module 1 is connected to the mains, or of transferring from the first additional module 10 to the main module 1 a second power supply current under a second power supply voltage (produced by the battery) when the main module 1 is not connected to the mains.

The data transfer consists of transferring various data between the main module 1 and the first additional module 10 and, in particular, received audio signals produced by the microphones 12 of the first additional module 10 to the main module 1.

The electrical connection can be made in different ways.

It is possible to use spring-loaded connectors, such as Pogo connectors. In this case, the spring-loaded pins 35 ( Pogo pins) are, for example, placed on the top of each module, and the corresponding "flat" contact surfaces are placed on the bottom of each module.

The reverse configuration (contact surfaces on top, and spring pins on the bottom) is of course possible. The reverse configuration improves the aesthetics of the speaker.

Other solutions are possible, such as the use of flexible connectors that fit into sockets located on the back of the modules. These could, for example, be USB-C connectors, allowing both power and data to be carried.

It is also possible to equip each module with one or more windings to implement inductive couplings to transfer power and data between modules. The windings can be made by high-frequency printed circuit tracks and by low-frequency coils.

Of course, what has just been said is valid for the electrical connection between each module.

The mechanical connection of the different modules is achieved by interlocking. In the following, we will refer to "lower module" and "upper module" to designate two modules assembled with each other and one above the other.

As we have seen, a shoulder defining a recess 21, 23 is here present on the upper periphery of each module 1, 10. A lip 20, 22 is present on the lower periphery of each module 1, 10. When the two modules are nested, the lip of the upper module is positioned in the recess of the lower module.

• le bon centrage des modules lorsqu'ils sont empilés ;
• l'amortissement des potentielles vibrations entre les modules (du fait des haut-parleurs) ;
• la stabilité/immobilité sur la surface sur laquelle est posée l'ensemble ;
• l'étanchéité acoustique (si nécessaire) entre les modules (et notamment l'occultation des microphones 12, comme cela a été vu plus tôt).

Advantageously, each lip is made of a compressible material, for example rubber. The lip thus ensures:

• the correct centering of the modules when stacked;
• damping of potential vibrations between modules (due to the speakers);
• stability/immobility on the surface on which the assembly is placed;
• acoustic sealing (if necessary) between the modules (and in particular the occultation of the microphones 12, as seen earlier).

So the top module can be the main module 1 and the bottom module the first additional module (see Figure 5 ). In this case, when the main module 1 and the first additional module 10 are assembled according to the occultation position, the lip 20 of the main module 1 is positioned in the recess 23 of the first additional module 10 and occults the microphones 12 which are then acoustically isolated from the outside.

A visual alignment mark 36 is present on each module to assist the user in positioning the modules. A system of magnets (located on the top and bottom of the modules) can help achieve correct alignment. A mechanical locking interlocking system can also be used.

Many other mechanical solutions are possible. For example, the layout visible on the Figure 12 can be used. This arrangement improves the positioning, the fit, and the aesthetics of the speaker.

A flat area 38 is formed on a rear portion of a lower module, in the periphery of the excavation. The module in question is any one of the modules previously presented (for example the first additional module 10).

The lip of the upper module (e.g. main module 1) also includes an additional flat area. The flat areas ensure the correct positioning and relative orientation of the modules without the need for magnets.

It is noted that the Pogo pins 39 can be positioned in the flat area 38 and extend vertically from said flat area 38. The Pogo pins 39 are therefore not located on the upper face of the enclosure, which improves its aesthetics.

On the Figure 12 , the Pogo 39 pins are positioned on an upper part of the lower module, and therefore the corresponding contact surfaces are positioned on a lower part of the upper module, in this case on an internal surface of the lip. The opposite configuration is possible (retractable pins on the upper part of the modules and contact surfaces on the lower part of the modules), in which case the retractable pins extend from the internal surface of the lip of the upper module and are not even visible on the rear of the enclosure, which improves its aesthetics.

We are now interested in the management of the different states of the enclosure, which depend on the additional modules assembled with the main module 1.

It is the processing component 7 of the main module 1 that manages these different states. It is relevant to implement the management process in the main module 1, because it is the only module necessary for the operation of the enclosure, the additional modules being optional.

The management method makes it possible to use different audio profiles depending on whether or not the second additional module 25 (and therefore the bass speaker 26) is used.

The management process also allows the use of different power profiles depending on whether or not the speaker is connected to the mains, and depending on the presence or absence of the battery.

The management method also allows the activation of additional functions using the microphones 12 if these are present.

We will now describe in more detail, with reference to the figure 13 , the management method implemented by the processing component 7.

The management process begins with an initialization step E0.

The processing component 7 then detects whether or not the main module 1 is assembled with the second additional module 25, in order to determine the audio equalization profile to be adopted (step E1).

Of course, in the case where the second module 25 is not provided by the manufacturer (and therefore is not manufactured), this first detection step E1 is not carried out.

The detection of the second additional module 25 can be carried out in different ways.

For example, the detection of the second additional module 25 may consist of detecting whether data is circulating on the pins dedicated to the transfer of data of the electrical connection. In this case, it will be advantageous to use a communication bus (for example USB or I2C), in order to allow the discovery and identification of the modules.

The detection may also consist of measuring the impedance at the pins on which an analog audio signal circulates to the bass speaker 26 of the second additional module 25. Verifying the impedance of this connection makes it possible to detect the presence of the second additional module 25, without this implying that the second additional module 25 is able to communicate on a digital bus. This reduces the cost of the second additional module 25.

The processing component 7 then adapts the audio profile applied by the speaker based on the result of this detection.

If the processing component 7 does not detect the presence of the second additional module 25, the processing component 7 activates the audio profile adapted to the absence of a bass speaker (step E2). Otherwise, the processing component 7 activates the audio profile adapted to the presence of the bass speaker 26 (step E3).

Steps E1 to E3 therefore concern the management of the second additional module 25 (and therefore of the bass speaker 26).

Then, in step E4, the processing component 7 detects whether or not the main module 1 is connected to the mains for its power supply. Optionally, the processing component 7 also detects whether or not the main module 1 is assembled with the first additional module 10 (or at least with the second unit 16 of the first additional module 10), to detect whether the battery is present.

The processing component 7 then adapts the power profile of the enclosure according to the result of this detection.

If the processing component 7 detects that the main module 1 is not connected to the mains, the processing component 7 activates the power supply profile adapted to the presence of the battery (step E5). Otherwise, the processing component 7 activates the power supply profile adapted to power supply via the mains (step E6).

The battery-friendly power profile includes making adjustments such as limiting the sound output, reducing the speaker's standby/power-off time, enabling advanced Wi-Fi power-saving features, and more.

In the event that the speaker is connected to the mains, but the battery is present, the processing component 7 also activates the recharging of the battery.

Steps E4 to E6 therefore concern power management.

Note that steps E1 to E3 and E4 to E6 could perfectly well be reversed.

The processing component 7 then detects whether the main module 1 is assembled with the first additional module 10 (or at least with the first unit 11 of the first additional module 10): step E7.

If this is the case, this means that the microphones 12 are present locally. The processing component 7 therefore activates the additional functions using the microphones 12 (step E8). Activation is done according to the speaker settings or according to user parameters.

The detection of the first additional module 10 (or the first unit 11) can be carried out in different ways.

For example, the detection of the first additional module 10 may consist of detecting whether data is circulating on the pins dedicated to the transfer of data from the electrical connection. In this case, it will be advantageous to use a communication bus (for example USB or I2C), in order to allow the discovery and identification of the modules.

If the microphones 12 are not locally present, the processing component 7 of the main module 1 activates the Bluetooth link to attempt to detect the first additional module 10: step E9.

The processing component 7 checks that the main module 1 has detected the first additional module 10 (and therefore the presence of the microphones): step E10.

If so, the processing component 7 connects the main module 1 with the first additional module 10 and activates the additional functions using the microphones 12 (step E8).

If the microphones 12 are not detected, the detection continues in the background during the nominal use of the speaker (the first additional module 10 can be switched on subsequently): step E11.

Steps E7 to E10 therefore concern the management of microphones.

It is noted that it is perfectly possible for the main module 1 to communicate with the microphones via a Bluetooth link even if the microphones 12 are locally present. The electrical connection between the main module 1 and the first additional module 10 is then only used for power supply, without data transfer. In this case, the “local detection” test of the microphones of step E7 is not carried out, and the detection of the microphones 12 is carried out via the Bluetooth link.

Advantageously, the enclosure is designed to accept and manage hot insertion and removal of modules additional. Thus, during the nominal operation of the enclosure, the processing component 7 attempts to detect the connection or disconnection of an additional module (step E12). If a module change is detected, the enclosure reconfigures itself according to the module change. The detection steps E1 to E10, which were carried out at system startup, are then carried out again, as well as the resulting parameter/profile adjustments.

In the case of insertion/removal of the second additional module 25, the audio reproduction continues with the appropriate equalization profile.

When the mains power is disconnected, the speaker switches to the "on battery" power profile. Conversely, when the mains power is connected, the product switches to the "mains" power profile.

In the case of insertion/removal (local) or in the case of connection/disconnection via the Bluetooth link of the first additional module 10, the functions linked to the microphones 12 are activated/deactivated.

Of course, the invention is not limited to the embodiment described but encompasses any variant falling within the scope of the invention as defined by the claims.

The modular audio reproduction equipment according to the invention is not necessarily a speaker, but can be any electronic equipment integrating one or more speakers and one or more microphones: residential gateway, set-top box, voice assistant, etc.

Of course, additional modules other than those described here can be provided. The first additional module could, for example, include a bass speaker. Additional modules could implement other additional functions: improved audio reproduction, classic functions of connected objects, etc.

Communication between modules, when not assembled, can use any type of technology (including radio or optical).

Claims (18)

1. Modular audio playback equipment comprising a main module (1) and one or more additional modules comprising a first additional module (10), the main module being arranged to operate individually or by being assembled with the additional module(s), the first additional module (10) comprising at least one microphone (12), the main module comprising:

   audio playback components comprising a main speaker (2);

   main communication components (4) arranged to implement at least one wireless communication;

   power supply components (5) arranged to acquire main power from the mains and to power the equipment from the main power supply;

   main assembly means arranged to assemble the main module with the additional module(s);

   a processor component (7) arranged to detect if the main module is assembled with the first additional module and, if this is the case, to activate at least one additional function implemented by the equipment and using the at least one microphone (12);

   the first additional module (10) additionally comprising a battery arranged to power the equipment when it is not connected to the mains, and the main module and the first additional module are assembled,

   the first additional module (10) further comprising first communication components (14) arranged to communicate with the main communication components (4) of the main module (1) via wireless communication, the main module (1) being arranged to, when the main module (1) and the first additional module (10) are not assembled, receive via wireless communication, audio signals produced by the microphone(s) of the first additional module to perform the additional function(s).
2. Equipment according to claim 1, the battery being arranged to power the first additional module when said additional module is not connected to the mains and is not assembled with the main module.
3. Equipment according to one of claims 1 or 2, the first additional module (10) comprising a first unit (11) comprising the microphone(s) and a second unit (16) comprising the battery, the first unit and the second unit being detachable and each being capable of being assembled individually with the main module.
4. Equipment according to one of the preceding claims, the processor component (7) being arranged to detect if the main module is connected or not to the mains, and to adapt a power supply profile of the equipment according to the result of this detection.
5. Equipment according to one of the preceding claims, in which the main assembly means are arranged to allow the first additional module (10) to be selectively positioned in an upper position above the main module (1) or in a lower position below the main module (1).
6. Equipment according to claim 5, in which one of the upper position or lower position is a hiding position in which the microphone(s) of the first additional module (10) are hidden.
7. Equipment according to claim 6, the main assembly means comprising a lip (20) which extends over a periphery of the main module (1), the first additional module having a shoulder defining a recess (23) over a periphery of the first additional module, the main module and the first additional module being arranged such that, when the main module and the first additional module are assembled according to the hiding position, the lip is positioned in the recess and hides the microphone(s) which are then insulated acoustically from the outside.
8. Equipment according to claim 7, in which pins, arranged to implement an electrical connection between the main module and the first additional module, extend from an inner surface of the lip.
9. Equipment according to one of the preceding claims, in which the additional modules comprise a second additional module (25) comprising additional speaker(s) (26).
10. Equipment according to claim 9, in which the main speaker (s) (2) comprise(s) a medium speaker and/or a treble speaker and in which the additional speaker(s) (26) comprise(s) a bass speaker.
11. Equipment according to claim 9, the processor component (7) being arranged to detect if the main module is assembled or not with the second additional module and to adapt an audio profile applied by the equipment according to the result of this detection.
12. Equipment according to one of the preceding claims, the equipment being a speaker.
13. Management method, implemented in the equipment according to one of the preceding claims and comprising steps:

    of detecting if the main module (1) is assembled with the first additional module (10);

    if this is the case, of activating the additional function(s) performed by the equipment and using the microphone(s) (12).
14. Management method according to claim 13, further comprising steps, if the main module (1) is not assembled with the first additional module (10):

    of activating the wireless communication to attempt to detect the first additional module (10);

    if the first additional module (10) is detected, of connecting the main module (1) with the first additional module (10) and activating the additional function(s) implemented by the equipment and using the microphone(s) (12).
15. Management method according to claim 13, further comprising steps:

    of detecting if the main module is assembled or not with a second additional module comprising an additional speaker;

    of adapting an audio profile applied by the equipment according to the result of this detection.
16. Management method according to claim 13, further comprising steps:

    of detecting if the main module is connected or not to the mains for its power supply;

    of adapting a power supply profile of the equipment according to the result of this detection.
17. Computer program comprising instructions which lead the processor component (7) of the main module (1) of the equipment according to one of claims 1 to 12 to execute the steps :

    - of detecting if the main module (1) is connected or not to the mains for its power supply;

    - of detecting if the main module (1) is assembled or not with the first additional module (10);

    - if the main module (1) is not connected to the mains, of activating a power supply profile of the equipment adapted to the presence of the battery;

    - otherwise, of activating the power supply profile adapted to the power supply via the mains;

    - if the main module (1) is assembled with the first additional module (10), of activating the additional function(s) performed by the equipment and using the microphone(s) (12);

    - if the main module (1) is not assembled with the first additional module (10):

    - of activating the wireless communication to attempt to detect the first additional module (10);

    - if the first additional module (10) is detected, of connecting the main module (1) with the first additional module (10) and activating the additional function(s) implemented by the equipment and using the microphone(s) (12).
18. Recording support which can read by a computer, on which the computer program according to claim 17 is recorded.

Images