CN115550824A

CN115550824A - MEMS digital loudspeaker system, sound production method and sound production equipment

Info

Publication number: CN115550824A
Application number: CN202211144684.3A
Authority: CN
Inventors: 刘长华; 焦晔柯; 袁飞洋
Original assignee: Earth Mountain Suzhou Microelectronics Technology Co ltd
Current assignee: Earth Mountain Suzhou Microelectronics Technology Co ltd
Priority date: 2022-09-20
Filing date: 2022-09-20
Publication date: 2022-12-30

Abstract

The invention discloses an MEMS (micro-electromechanical system) digital loudspeaker system, a sound production method and sound production equipment, relates to the technical field of digital loudspeakers, and aims to solve the problem that digital sound production cannot be realized in the prior art. The method comprises the following steps: the system comprises a control module, a driving module and an MEMS digital loudspeaker; the MEMS digital loudspeaker comprises a plurality of digital sounding units; the control module is in communication connection with the driving module, and the driving module is in communication connection with the MEMS digital loudspeaker; the control module is used for processing the audio signal and controlling the driving module to drive the MEMS digital loudspeaker to produce sound, the MEMS digital loudspeaker system can realize digital sound production, and the defects of poor distortion, frequency response nonlinearity, low signal-to-noise ratio and the like of the traditional analog loudspeaker are overcome.

Description

MEMS digital loudspeaker system, sound production method and sound production equipment

Technical Field

The invention relates to the technical field of digital speakers, in particular to an MEMS digital speaker system, a sound production method and sound production equipment.

Background

A loudspeaker is an electroacoustic transducer device that converts an electrical sound signal into sound. From the history of development, various speakers have appeared, such as: electrodynamic speakers, electromagnetic speakers (i.e., reed speakers), crystal speakers, electrostatic speakers, and the like. Digital sound is sometimes referred to as digital audio.

Digital sound is sound that is recorded, stored, edited, compressed, restored or played by using a digital technology. The method has the characteristics of convenient storage, low storage cost, small distortion, very convenient editing and processing and the like.

The MEMS (Micro-Electro-Mechanical System) loudspeaker is an array sounding device consisting of N pixel loudspeaker units. The sound production is realized by adopting a digital sound reconstruction mode, and in the design of a single pixel loudspeaker, a plurality of design principles are different from those of the traditional loudspeaker. In digital sound reconstruction, each pixel loudspeaker unit can generate an ideal sound pulse signal. However, there is still a lack of MEMS digital speaker systems and sound production methods that can achieve digital sound production.

Therefore, it is desirable to provide a more reliable MEMS digital speaker system and sound production method.

Disclosure of Invention

The invention aims to provide an MEMS digital loudspeaker system, a sound production method and sound production equipment, which are used for solving the problem that digital sound production cannot be realized in the prior art.

In order to achieve the above purpose, the invention provides the following technical scheme:

in a first aspect, the present invention provides a MEMS digital speaker system, comprising:

the system comprises a control module, a driving module and an MEMS digital loudspeaker;

the MEMS digital loudspeaker comprises a plurality of digital sounding units;

the control module is in communication connection with the driving module, and the driving module is in communication connection with the MEMS digital loudspeaker; the control module is used for processing the audio signal and controlling the driving module to drive the MEMS digital loudspeaker to sound.

Optionally, the control module at least includes:

the device comprises an AD conversion module, a power supply module, a first data transmission module and a signal processing module;

the AD conversion module is used for converting an analog signal into a digital signal; the power supply module is used for supplying power to the control module; the first data transmission module is used for receiving or sending data; the signal processing module is used for carrying out algorithm processing on the audio signal and carrying out digital sound reconstruction processing on the audio signal.

Optionally, the driving module at least includes:

the second data transmission module, the decoder, the driving power supply module and the driving circuit;

one end of the second data transmission module is connected with the first data transmission module, and the other end of the second data transmission module is connected with one end of the decoder; the other end of the decoder is connected with the driving circuit; the driving power supply module is connected with the driving circuit; the driving circuit is also connected with the MEMS digital loudspeaker;

the decoder is used for decoding the driving signal into a logic signal for controlling the driving circuit; the driving power supply module is used for supplying power to the driving circuit; the driving circuit is used for amplifying the logic signal to drive the digital sound production unit.

Optionally, the signal processing module at least includes:

the device comprises a signal buffer, a sound effect algorithm modulation module, a DSR module and a drive encoder;

the signal buffer is used for synchronizing the speed of the input data stream and improving the anti-interference capability of the signal; the sound effect algorithm modulation module is used for generating an audio signal through an algorithm; the DSR module is used for performing digital sound reconstruction on the audio signal.

Optionally, the MEMS digital speaker system further includes:

a microphone and a filtering module; the microphone is in communication connection with the control module and the filtering module;

the microphone is used for collecting sound analog signal input, filtering the collected sound analog signal through the filtering module, and converting the sound analog signal into a sound digital signal through the AD conversion module; and feeding the sound digital signal back to the signal processing module for algorithm processing, and performing digital sound reconstruction processing on audio data.

Optionally, the MEMS digital speaker system further includes:

a digital signal input interface and an analog signal input interface;

the analog signal input interface is connected with the AD conversion module, transmits the analog signal to the AD conversion module, and converts the analog signal into a digital signal by the AD conversion module;

the digital signal input interface is used for transmitting an audio data stream to the control module; the analog signal input interface is configured to be compatible with an audio source of a conventional speaker.

Optionally, the control module further includes:

a multiplexer; the multiplexer is connected with the digital signal input interface and the AD conversion module and is used for selecting analog signal input or digital signal input;

one end of the signal buffer is connected with the AD conversion module and the multiplexer, and the other end of the signal buffer is connected with one end of the sound effect algorithm modulation module; the other end of the sound effect algorithm modulation module is connected with one end of the DSR module, the other end of the DSR module is connected with one end of the driving encoder, and the other end of the driving encoder is connected with a first data transmission module in the control module.

In a second aspect, the present invention provides a sounding method for a MEMS digital speaker, the method is applied to a MEMS digital speaker system, the MEMS digital speaker system includes: the system comprises a control module, a driving module and an MEMS digital loudspeaker, wherein the MEMS digital loudspeaker comprises a plurality of digital sound production units; the method comprises the following steps:

the control module selects the type of the input audio signal; the audio signal type comprises a digital signal or an analog signal;

receiving an audio signal corresponding to the audio signal type and processing the audio signal to obtain a processed audio signal;

and sending the processed audio signal to the driving module, and converting the processed audio signal into an actual control signal by the driving module so as to control the driving circuit to drive the digital sound generating unit in the MEMS digital loudspeaker to generate sound.

Optionally, the control module at least includes: a signal processing module; the signal processing module at least comprises: the system comprises a signal buffer, a sound effect algorithm modulation module, a DSR module and a drive encoder;

receiving an audio signal corresponding to the audio signal type and processing the audio signal to obtain a processed audio signal, specifically including:

synchronizing a transmission rate of the digital signal through the signal buffer;

generating a target audio signal through the sound effect algorithm modulation module;

performing digital sound reconstruction on the target audio signal by the DSR module to obtain a processed audio signal;

and converting the processed audio signal into a driving signal through the driving encoder and sending the driving signal to the driving module.

In a third aspect, the present invention provides a MEMS digital speaker sound generating apparatus, the apparatus being applied to a MEMS digital speaker system, the MEMS digital speaker system comprising: the system comprises a control module, a driving module and an MEMS digital loudspeaker, wherein the MEMS digital loudspeaker comprises a plurality of digital sounding units; the apparatus comprises:

a communication unit/communication interface for the control module to select the type of the input audio signal; the audio signal type comprises a digital signal or an analog signal;

receiving an audio signal corresponding to the audio signal type;

the processing unit/processor is used for processing the audio signal to obtain a processed audio signal; and sending the processed audio signal to the driving module, and converting the processed audio signal into an actual control signal by the driving module so as to control the driving circuit to drive the digital sound generating unit in the MEMS digital loudspeaker to generate sound.

Compared with the prior art, the invention provides an MEMS digital loudspeaker system, a sound production method and sound production equipment. Wherein, MEMS digital loudspeaker system includes: the system comprises a control module, a driving module and an MEMS digital loudspeaker; the MEMS digital loudspeaker comprises a plurality of digital sounding units; the control module is in communication connection with the driving module, and the driving module is in communication connection with the MEMS digital loudspeaker; the control module is used for processing the audio signal and controlling the driving module to drive the MEMS digital loudspeaker to produce sound, the MEMS digital loudspeaker system can realize digital sound production, and the defects of distortion difference, frequency response nonlinearity, low signal-to-noise ratio and the like of the traditional analog loudspeaker sound production are overcome.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic structural diagram of a MEMS digital speaker system provided by the present invention;

FIG. 2 is a schematic diagram of a control module of the MEMS digital speaker system provided in the present invention;

FIG. 3 is a schematic structural diagram of a driving module in the MEMS digital speaker system provided by the present invention;

FIG. 4 is a schematic flow chart of a sound production method of a MEMS digital speaker provided by the present invention;

fig. 5 is a schematic structural diagram of a MEMS digital speaker sound generating apparatus provided by the present invention.

Reference numerals:

the digital signal processing system comprises a 1-digital signal input interface, a 2-analog signal input interface, a 3-AD conversion module, a 4-power supply module, a 5-multiplexer, a 6-signal buffer, a 7-sound effect algorithm modulation module, an 8-DSR module, a 9-drive encoder, a 10-signal processing module, a 11-first data transmission module, a 12-control module, a 13-second data transmission module, a 14-decoder, a 15-drive power supply module, a 16-drive circuit, a 17-drive module, an 18-MEMS digital loudspeaker, a 19-filtering module and a 20-microphone.

Detailed Description

In order to facilitate clear description of technical solutions of the embodiments of the present invention, in the embodiments of the present invention, terms such as "first" and "second" are used to distinguish the same items or similar items having substantially the same functions and actions. For example, the first threshold and the second threshold are only used for distinguishing different thresholds, and the sequence order of the thresholds is not limited. Those skilled in the art will appreciate that the terms "first," "second," etc. do not denote any order or quantity, nor do the terms "first," "second," etc. denote any order or importance.

It is to be understood that the terms "exemplary" or "such as" are used herein to mean serving as an example, instance, or illustration. Any embodiment or design described herein as "exemplary" or "such as" is not necessarily to be construed as preferred or advantageous over other embodiments or designs. Rather, use of the word "exemplary" or "such as" is intended to present concepts related in a concrete fashion.

In the present invention, "at least one" means one or more, "a plurality" means two or more. "and/or" describes the association relationship of the associated object, indicating that there may be three relationships, for example, a and/or B, which may indicate: a exists alone, A and B exist simultaneously, and B exists alone, wherein A and B can be singular or plural. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship. "at least one of the following" or similar expressions refer to any combination of these items, including any combination of the singular or plural items. For example, at least one (one) of a, b, or c, may represent: a, b, c, a and b combination, a and c combination, b and c combination, or a, b and c combination, wherein a, b and c can be single or multiple.

Description of terms:

the AD conversion is an Analog-to-Digital converter (Analog-to-Digital converter). The analog signal is converted to a digital signal. Mainly includes an integration type, a successive approximation type, a parallel comparison type/serial parallel type, a sigma-delta modulation type, a capacitor array successive comparison type, and a voltage-frequency conversion type. The a/D converter may be used to convert an analog quantity into a digital quantity through a certain circuit. The analog quantity may be an electrical signal such as voltage or current, or a non-electrical signal such as pressure, temperature, humidity, displacement, or sound. However, before a/D conversion, an input signal to the a/D converter must be converted into a voltage signal by various sensors from various physical quantities.

Digital Sound Reconstruction (DSR).

Next, a scheme provided by an embodiment of the present specification is explained with reference to the accompanying drawings:

fig. 1 is a schematic structural diagram of a MEMS digital speaker system provided in the present invention, and as shown in fig. 1, the MEMS digital speaker system may include: a control module 12, a drive module 17 and a MEMS digital speaker 18; the MEMS digital speaker 18 includes a plurality of digital sound generating units; the control module 12 is in communication connection with the driving module 17, and the driving module 17 is in communication connection with the MEMS digital speaker 18; the control module 12 is configured to process an audio signal and control the driving module 17 to drive the MEMS digital speaker 18 to generate sound.

Wherein the MEMS digital speaker system may further include: a digital signal input interface 1 and an analog signal input interface; the analog signal input interface is connected with the AD conversion module 3, transmits the analog signal to the AD conversion module 3, and converts the analog signal into a digital signal by the AD conversion module 3; the digital signal input interface 1 is used for transmitting an audio data stream to the control module 12; the analog signal input interface is configured to be compatible with an audio source of a conventional speaker.

The control module 12 may select the type of signal input, for example: a digital signal is input through the digital signal input interface 1, or an analog signal is input through the analog signal interface. The control module 12 may further include a filtering module 19, and the filtering module 19 may mainly remove noise components from the analog signal of the microphone 20 collected by the microphone 20.

The MEMS digital speaker system may further include:

a microphone 20 and a filtering module 19; the microphone 20 is connected with the control module 12 and the filtering module 19 in a communication way; the microphone 20 is configured to collect an input of a sound analog signal, filter the collected sound analog signal through the filtering module 19, and then convert the sound analog signal into a sound digital signal through the AD conversion module 3; and feeding the sound digital signal back to the signal processing module 10 for algorithm processing, and performing digital sound reconstruction processing on the audio data.

The driving module 17 may be an ASIC chip (Application Specific Integrated Circuit), and the driving module 17 may drive and the MEMS digital speaker 18 to generate sound.

The MEMS digital loudspeaker system in the figure 1 can realize digital sound production, and overcomes the defects of poor distortion, non-linear frequency response, low signal-to-noise ratio and the like of the traditional analog loudspeaker sound production.

In addition, in the system shown in fig. 1, a microphone is added to collect a microphone analog signal, and the microphone analog signal is finally fed back to the signal processing module through the filtering module and the AD conversion module, so that the sound effect of the loudspeaker can be further improved.

Based on the MEMS digital speaker system of fig. 1, some specific structures of the system are also provided in the embodiments of the present specification, which are described below.

Alternatively, the specific structure of the control module 12 in the MEMS digital speaker system can be described with reference to fig. 2. Fig. 2 is a schematic structural diagram of a control module in the MEMS digital speaker system provided in the present invention. As shown in fig. 2, the control module 12 may include at least:

the device comprises an AD conversion module 3, a power supply module 4, a first data transmission module 11 and a signal processing module 10;

the AD conversion module 3 is used for converting an analog signal into a digital signal; the power module 4 is used for supplying power to the control module 12; the first data transmission module 11 is configured to receive or send data; the signal processing module 10 is configured to perform algorithm processing on the audio signal and perform digital sound reconstruction processing on the audio data.

The signal processing module 10 at least comprises: the device comprises a signal buffer 6, a sound effect algorithm modulation module 7, a DSR module 8, a drive encoder 9 and a multiplexer 5;

the signal buffer 6 is used for synchronizing the rate of the input data stream and improving the anti-interference capability of the signal; the sound effect algorithm modulation module 7 is used for generating an audio signal through an algorithm; the DSR module 8 is configured to perform digital sound reconstruction on the audio signal.

A multiplexer 5; the multiplexer 5 is connected to the digital signal input interface 1 and the AD conversion module 3, and the multiplexer 5 is configured to select an analog signal input or a digital signal input.

One end of the signal buffer 6 is connected with the AD conversion module 3 and the multiplexer 5, and the other end of the signal buffer 6 is connected with one end of the sound effect algorithm modulation module 7; the other end of the sound effect algorithm modulation module 7 is connected with one end of the DSR module 8, the other end of the DSR module 8 is connected with one end of the driving encoder 9, and the other end of the driving encoder 9 is connected with a first data transmission module 11 in the control module 12.

The specific structure of the driving module in the MEMS digital speaker system can be explained with reference to fig. 3. Fig. 3 is a schematic structural diagram of a driving module in the MEMS digital speaker system according to the present invention. As shown in fig. 3, the driving module 17 may include at least:

a second data transmission module 13, a decoder 14, a driving power supply module 15 and a driving circuit 16;

one end of the second data transmission module 13 is connected to the first data transmission module 11, and the other end of the second data transmission module 13 is connected to one end of the decoder 14; the other end of the decoder 14 is connected with the driving circuit 16; the driving power supply module 15 is connected with the driving circuit 16; the driving circuit 16 is also connected with the MEMS digital speaker 18;

the decoder 14 is used for decoding the driving signal into a logic signal for controlling the driving circuit 16; the driving power supply module 15 is used for supplying power to the driving circuit 16; the driving circuit 16 is used for amplifying the logic signal to drive the digital sound generating unit.

In the system of the above embodiment, the digital signal input interface 1 can be an audio source that the control module 12 can use to make the incoming audio stream analog signal input interface 2 compatible with a conventional speaker. For example: the multiplexer 5 selects an analog input signal, the input analog signal is sent to the AD conversion module 3, and the AD conversion module 3 converts the analog audio signal into a digital signal. The digital signal is sent to the signal buffer 6, the signal buffer 6 synchronizes the speed of the input data stream and improves the anti-interference capability of the signal, and then the digital signal is sent to the sound effect algorithm modulation module 7, and the sound effect algorithm modulation module 7 generates an ideal audio signal through a series of algorithms. The ideal audio signal is sent to the DSR module 8 and the DSR module 8 performs digital sound reconstruction of the audio signal. And sending the audio signal subjected to the digital sound reconstruction to a driving coding module, and coding the audio signal subjected to the reconstruction into a driving signal by the driving coding module. The driving signal is transmitted to the second data transmission module 13 in the driving module 17 through the first data transmission module 11 in the control module 12, the second data transmission module 13 transmits the driving signal to the decoder 14, the decoder 14 decodes the driving signal into a logic signal for controlling the driving circuit 16, the logic signal is transmitted to the driving circuit 16, and the driving circuit 16 amplifies the logic signal to drive the digital sound generating unit in the MEMS digital speaker 18.

In addition, a microphone 20 is added in the system, and clutter parts in analog signals of the microphone 20 are removed from analog signals of the microphone 20 through a filtering module 19, wherein the analog signals of the microphone 20 are collected by the microphone 20.

In a specific application of the above system embodiment, the MEMS digital speaker system in the above embodiment is used to drive the MEMS digital speaker 18 to perform digital sound production, and a specific implementation method may be described with reference to the following method:

fig. 4 is a schematic flow diagram of a sound production method of an MEMS digital speaker according to the present invention, the method is applied to an MEMS digital speaker system, and the MEMS digital speaker system includes: a control module 12, a driving module 17 and a MEMS digital speaker 18, wherein the MEMS digital speaker 18 comprises a plurality of digital sound generating units. As shown in fig. 4, the process may include the following steps:

step 410: the control module 12 selects the type of the input audio signal; the audio signal type includes a digital signal or an analog signal.

In practical applications, when an audio signal is input, a digital signal may be input, and an analog signal may also be input, in this scheme, which audio signal system is input may be selected by itself, and the multiplexer 5 in the control module 12 may select the type of the input audio signal to select an analog input or a digital input.

Step 420: and receiving an audio signal corresponding to the type of the audio signal and processing the audio signal to obtain a processed audio signal.

In this embodiment, particularly during processing, it is necessary to process the audio signal and control the driving module 17 (ASIC) to drive the MEMS digital speaker 18 to generate digital sound.

Step 430: the processed audio signal is sent to the driving module 17, and the driving module 17 converts the processed audio signal into an actual control signal to control the driving circuit 16 to drive the digital sound generating unit in the MEMS digital speaker 18 to generate sound.

In the method of fig. 4, the control module selects the type of audio signal input; receiving an audio signal corresponding to the audio signal type and processing the audio signal to obtain a processed audio signal; and sending the processed audio signal to the driving module, and converting the processed audio signal into an actual control signal by the driving module so as to control the driving circuit to drive the digital sound generating unit in the MEMS digital loudspeaker to generate sound. The method is adopted to drive the MEMS digital loudspeaker system to realize digital sound production, and the defects of poor distortion, non-linear frequency response, low signal-to-noise ratio and the like of the traditional analog loudspeaker sound production are overcome.

Based on the method of fig. 4, the embodiments of the present specification also provide some specific implementations of the method, which are described below.

Optionally, the control module 12 may at least include: a signal processing module 10; the signal processing module 10 comprises at least: the system comprises a signal buffer 6, a sound effect algorithm modulation module 7, a DSR module 8 and a driving encoder 9;

receiving an audio signal corresponding to the audio signal type and processing the audio signal to obtain a processed audio signal, which may specifically include:

synchronizing the transmission rate of the digital signal by said signal buffer 6;

generating a target audio signal through the sound effect algorithm modulation module 7;

performing digital sound reconstruction on the target audio signal by the DSR module 8 to obtain a processed audio signal;

the processed audio signal is converted into a driving signal by the driving encoder 9 and sent to the driving module 17.

Specifically, the MEMS digital speaker system may first select a digital signal or input an analog audio signal, wherein the analog signal is converted into a digital signal by the AD conversion module 3. The digital signal enters the signal processing module 10: first, the transmission rate of the digital signal is synchronized by the signal buffer 6; secondly, generating an ideal audio signal through sound effect algorithm modulation; subsequent digital sound reconstruction by the DSR; finally, the reconstructed audio data is converted into driving data by the driving encoder 9 and sent to the driving module 17. After the driving data reaches the driving module 17, the driving data is decoded into an actual control signal, and finally the control signal controls the driving circuit 16 to drive the sound generating unit in the MEMS speaker to generate audio sound. The sound signal collected by the microphone 20 passes through the filtering module 19 and the AD conversion module 3, and is finally fed back to the signal processing module 10, so that the sound effect of the loudspeaker can be further improved.

Based on the same idea, the embodiment of the specification further provides the sound production device of the MEMS digital loudspeaker. Fig. 5 is a schematic structural diagram of a MEMS digital speaker sound generating apparatus provided by the present invention. The apparatus is applied to a MEMS digital speaker system, which includes: a control module 12, a drive module 17 and a MEMS digital speaker 18, said MEMS digital speaker 18 containing a plurality of digital sound generating units, the apparatus may comprise:

a communication unit/communication interface for the control module 12 to select the type of the input audio signal; the audio signal type comprises a digital signal or an analog signal;

receiving an audio signal corresponding to the audio signal type;

the processing unit/processor is used for processing the audio signal to obtain a processed audio signal; and sending the processed audio signal to the driving module 17, and converting the processed audio signal into an actual control signal by the driving module 17 so as to control the driving circuit 16 to drive the digital sound generating unit in the MEMS digital speaker 18 to generate sound.

The technical effect of the equipment is realized by adopting the MEMS digital loudspeaker system, so the technical effect is the same as that of the MEMS digital loudspeaker system, and the description is omitted.

As shown in fig. 5, the terminal device may further include a communication line. The communication link may include a path for transmitting information between the aforementioned components.

Optionally, as shown in fig. 5, the terminal device may further include a memory. The memory is used for storing computer-executable instructions for implementing the inventive arrangements and is controlled by the processor for execution. The processor is used for executing computer execution instructions stored in the memory, thereby realizing the method provided by the embodiment of the invention.

As shown in fig. 5, the memory may be, but is not limited to, a read-only memory (ROM) or other type of static storage device that may store static information and instructions, a Random Access Memory (RAM) or other type of dynamic storage device that may store information and instructions, an electrically erasable programmable read-only memory (EEPROM), a compact disk read-only memory (CD-ROM) or other optical disk storage, optical disk storage (including compact disk, laser disk, optical disk, digital versatile disk, blu-ray disk, etc.), magnetic disk storage or other magnetic storage devices, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer. The memory may be separate and coupled to the processor via a communication link. The memory may also be integrated with the processor.

Optionally, the computer execution instruction in the embodiment of the present invention may also be referred to as an application program code, which is not specifically limited in the embodiment of the present invention.

In one implementation, as shown in FIG. 5, a processor may include one or more CPUs, such as CPU0 and CPU1 in FIG. 5, for example.

In one embodiment, as shown in fig. 5, a terminal device may include a plurality of processors, such as the processor in fig. 5. Each of these processors may be a single core processor or a multi-core processor.

Based on the same idea, embodiments of the present specification further provide a computer storage medium corresponding to the foregoing embodiments, where the computer storage medium stores instructions, and when the instructions are executed, the method in the foregoing embodiments is implemented.

The above description mainly introduces the scheme provided by the embodiment of the present invention from the perspective of interaction between the modules. It is understood that each module contains hardware structure and/or software unit for executing each function in order to realize the above functions. Those of skill in the art will readily appreciate that the present invention can be implemented in hardware or a combination of hardware and computer software, with the exemplary elements and algorithm steps described in connection with the embodiments disclosed herein. Whether a function is performed in hardware or computer software drives hardware depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.

The functional modules may be divided according to the above method examples, for example, the functional modules may be divided corresponding to the functions, or two or more functions may be integrated into one processing module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. It should be noted that, the division of the modules in the embodiment of the present invention is schematic, and is only a logic function division, and there may be another division manner in actual implementation.

The processor in this specification may also have the function of a memory. The memory is used for storing computer-executable instructions for implementing the inventive arrangements and is controlled by the processor for execution. The processor is used for executing the computer execution instructions stored in the memory, thereby realizing the method provided by the embodiment of the invention.

The memory may be, but is not limited to, a read-only memory (ROM) or other type of static storage device that may store static information and instructions, a Random Access Memory (RAM) or other type of dynamic storage device that may store information and instructions, an electrically erasable programmable read-only memory (EEPROM), a compact disk read-only memory (CD-ROM) or other optical disk storage, optical disk storage (including compact disk, laser disk, optical disk, digital versatile disk, blu-ray disk, etc.), magnetic disk storage or other magnetic storage devices, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer. The memory may be self-contained and coupled to the processor via a communication link. The memory may also be integrated with the processor.

Optionally, the computer-executable instructions in the embodiment of the present invention may also be referred to as application program codes, which is not specifically limited in this embodiment of the present invention.

The method disclosed by the embodiment of the invention can be applied to a processor or realized by the processor. The processor may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method may be performed by integrated logic circuits of hardware in a processor or instructions in the form of software. The processor may be a general purpose processor, a Digital Signal Processor (DSP), an ASIC, an FPGA (field-programmable gate array) or other programmable logic device, discrete gate or transistor logic device, or discrete hardware components. The various methods, steps and logic blocks disclosed in the embodiments of the present invention may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present invention may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in a memory, and a processor reads information in the memory and completes the steps of the method in combination with hardware of the processor.

In one possible implementation, a computer-readable storage medium is provided, in which instructions are stored, and when executed, are used to implement the method in the foregoing embodiments.

In the above embodiments, the implementation may be wholly or partially realized by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer programs or instructions. When the computer program or instructions are loaded and executed on a computer, the procedures or functions described in the embodiments of the present invention are performed in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, a terminal, a user device, or other programmable apparatus. The computer program or instructions may be stored in a computer readable storage medium or transmitted from one computer readable storage medium to another computer readable storage medium, for example, the computer program or instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center by wire or wirelessly. The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that integrates one or more available media. The usable medium may be a magnetic medium, such as a floppy disk, a hard disk, a magnetic tape; or optical media such as Digital Video Disks (DVDs); it may also be a semiconductor medium, such as a Solid State Drive (SSD).

While the invention has been described in connection with various embodiments, other variations to the disclosed embodiments can be understood and effected by those skilled in the art in practicing the claimed invention, from a review of the drawings, the disclosure, and the appended claims. In the claims, the word "comprising" does not exclude other elements or steps, and the word "a" or "an" does not exclude a plurality. A single processor or other unit may fulfill the functions of several items recited in the claims. The mere fact that certain measures are recited in mutually different dependent claims does not indicate that a combination of these measures cannot be used to advantage.

Although the present invention has been described in connection with the specific features and embodiments thereof, it is apparent that various modifications and combinations can be made thereto without departing from the spirit and scope of the invention. Accordingly, the specification and figures are merely exemplary of the invention as defined in the appended claims and are intended to cover any and all modifications, variations, combinations, or equivalents within the scope of the invention. It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims

1. A MEMS digital speaker system, the MEMS digital speaker system comprising:

the MEMS digital loudspeaker comprises a plurality of digital sounding units;

2. The MEMS digital speaker system of claim 1, wherein the control module comprises at least:

the AD conversion module is used for converting the analog signal into a digital signal; the power supply module is used for supplying power to the control module; the first data transmission module is used for receiving or sending data; the signal processing module is used for carrying out algorithm processing on the audio signal and carrying out digital sound reconstruction processing on the audio signal.

3. The MEMS digital speaker system of claim 2, wherein the drive module comprises at least:

the decoder is used for decoding the driving signal into a logic signal for controlling the driving circuit; the driving power supply module is used for supplying power to the driving circuit; the driving circuit is used for amplifying the logic signal to drive the digital sound production unit to produce sound.

4. The MEMS digital speaker system of claim 2, wherein the signal processing module comprises at least:

the system comprises a signal buffer, a sound effect algorithm modulation module, a DSR module and a drive encoder;

5. The MEMS digital speaker system as recited in claim 2, further comprising:

6. The MEMS digital speaker system as recited in claim 4, further comprising:

a digital signal input interface and an analog signal input interface;

the analog signal input interface is connected with the AD conversion module, transmits an analog signal to the AD conversion module, and converts the analog signal into a digital signal by the AD conversion module;

7. The MEMS digital speaker system of claim 6, wherein the control module further comprises:

8. A sounding method of a MEMS digital loudspeaker is characterized in that the method is applied to a MEMS digital loudspeaker system, and the MEMS digital loudspeaker system comprises the following steps: the system comprises a control module, a driving module and an MEMS digital loudspeaker, wherein the MEMS digital loudspeaker comprises a plurality of digital sound production units; the method comprises the following steps:

and sending the processed audio signal to the driving module, and converting the processed audio signal into an actual control signal by the driving module so as to control a driving circuit to drive a digital sound production unit in the MEMS digital loudspeaker to produce sound.

9. The method of claim 8, wherein the control module comprises at least: a signal processing module; the signal processing module at least comprises: the system comprises a signal buffer, a sound effect algorithm modulation module, a DSR module and a drive encoder;

synchronizing a transmission rate of a digital signal through the signal buffer;

10. A MEMS digital loudspeaker sound production device, the device is applied to a MEMS digital loudspeaker system, the MEMS digital loudspeaker system comprises: the system comprises a control module, a driving module and an MEMS digital loudspeaker, wherein the MEMS digital loudspeaker comprises a plurality of digital sound production units; characterized in that the device comprises:

receiving an audio signal corresponding to the audio signal type;

the processing unit/processor is used for processing the audio signal to obtain a processed audio signal; and sending the processed audio signal to the driving module, and converting the processed audio signal into an actual control signal by the driving module so as to control a driving circuit to drive a digital sound production unit in the MEMS digital loudspeaker to produce sound.