Sound production module, terminal device and method for controlling sound production module to produce sound

Abstract

This disclosure relates to a sound-generating module, a terminal device, and a method for controlling the sound-generating module to emit sound. The sound-generating module includes: a loudspeaker; and an acoustic component including an acoustic adjustment unit disposed in the rear cavity of the loudspeaker. The acoustic adjustment unit is used to unidirectionally propagate sound wave signals received from the loudspeaker in a direction away from the loudspeaker. In the structure of this disclosure, the acoustic adjustment unit transmits sound wave signals unidirectionally in the rear cavity, and the sound wave signals can only be transmitted in a direction away from the loudspeaker. The sound wave signals reflected by the sidewall of the rear cavity cannot be reflected back to the loudspeaker through the acoustic adjustment unit. This is equivalent to increasing the volume of the rear cavity on the non-sound-emitting side of the loudspeaker, thereby improving the resonant frequency of the loudspeaker and optimizing the bass effect of the loudspeaker.

Description

Technical Field

[0001] This disclosure relates to the field of terminals, and more particularly to a sound-emitting module, a terminal device, and a method for controlling the sound-emitting module to emit sound. Background Technology

[0002] Sound quality is a crucial user evaluation metric for terminal devices. As users demand higher sound quality from their devices, more and more devices are focusing on bass performance. To enhance bass, some technologies increase the volume of the speaker's rear cavity. However, with terminal devices becoming increasingly thinner and lighter, these technological methods are severely limited. Summary of the Invention

[0003] To overcome the problems existing in related technologies, this disclosure provides a sound-generating module, a terminal device, and a method for controlling the sound-generating module to generate sound.

[0004] According to a first aspect of the embodiments of this disclosure, a sound-generating module is provided, comprising:

[0005] speaker;

[0006] An acoustic component includes an acoustic adjustment unit disposed in the rear cavity of the loudspeaker; the acoustic adjustment unit is used to propagate sound wave signals received from the loudspeaker unidirectionally in a direction away from the loudspeaker.

[0007] In some embodiments, the acoustic component further includes a control unit;

[0008] The control unit is connected to the acoustic adjustment unit, and the control unit is used to adjust the driving parameters of the acoustic adjustment unit so that the acoustic adjustment unit propagates the sound wave signal in one direction.

[0009] In some embodiments, the acoustic conditioning unit includes: a gain module and a loss module;

[0010] The gain module is connected to the loss module, and the gain module and the loss module are respectively connected to the control unit; the control unit is used to adjust the driving parameters of the gain module and / or the driving parameters of the loss module until the Hamiltonian of the material system transmission sound wave model corresponding to the acoustic adjustment unit meets the preset conditions, so that the acoustic adjustment unit can unidirectionally propagate the sound wave signal.

[0011] In some embodiments, the acoustic modulation unit is made of acoustic metamaterial.

[0012] In some embodiments, the acoustic conditioning unit divides the rear cavity into two equal parts.

[0013] In some embodiments, the acoustic conditioning unit is located at one end of the rear cavity near the speaker.

[0014] In some embodiments, the acoustic adjustment unit extends a preset distance along a preset direction, the preset direction being perpendicular to the transmission direction of the acoustic signal.

[0015] In some embodiments, a plurality of acoustic adjustment units are arranged at intervals in a direction away from the speaker.

[0016] According to a second aspect of the present disclosure, a terminal device is provided, including the sound-emitting module described in any of the preceding claims.

[0017] According to a third aspect of the present disclosure, a method for controlling the sound output of a sound-emitting module is provided, applied to a terminal device, the method comprising:

[0018] Obtain the current parameters of the acoustic adjustment unit in the acoustic component, wherein the acoustic adjustment unit is located in the rear cavity of the sound-generating module;

[0019] In response to the difference between the current parameters and the pre-stored target parameters, control information is determined, wherein the control information is used to instruct the control unit of the sound-generating module to adjust the current parameters of the acoustic adjustment unit to the target parameters, wherein the target parameters are used to characterize the parameters corresponding to the sound wave signals of the unidirectional propagating loudspeaker of the acoustic adjustment unit;

[0020] The control information is output to the control unit.

[0021] In some implementations, the current parameters include: current driving parameters, current gain coefficient, and current loss coefficient;

[0022] The acoustic adjustment unit includes a gain module and a loss module. Obtaining the current parameters of the acoustic adjustment unit in the acoustic components includes:

[0023] Obtain the current driving parameters of the acoustic adjustment unit, the current gain coefficient of the gain module, and the current loss coefficient of the loss module.

[0024] In some implementations, determining the control information includes:

[0025] Obtain configuration information, wherein the configuration information includes target driving parameters, target gain coefficient, and target loss coefficient;

[0026] The control information is determined based on the current parameters and the configuration information.

[0027] In some embodiments, the method further includes: determining configuration information, wherein the determined configuration information includes:

[0028] Using the driving parameters of the acoustic adjustment unit as input parameters, the input parameters are adjusted to adjust the gain coefficient of the gain module and / or the loss coefficient of the loss module until the Hamiltonian of the material system transmission sound wave model corresponding to the acoustic adjustment unit meets the preset conditions.

[0029] Store the target driving parameters, target gain coefficient, and target loss coefficient corresponding to the Hamiltonian when the preset conditions are met, as configuration information.

[0030] According to a fourth aspect of the present disclosure, an apparatus for controlling the sound output of a sound-emitting module is provided, applied to a terminal device, the apparatus comprising:

[0031] The acquisition module is used to acquire the current parameters of the acoustic adjustment unit in the acoustic component, wherein the acoustic adjustment unit is located in the rear cavity of the sound-generating module;

[0032] A determination module is used to determine control information in response to the difference between the current parameters and the pre-stored target parameters. The control information is used to instruct the control unit of the sound generation module to adjust the current parameters of the acoustic adjustment unit to the target parameters. The target parameters are used to characterize the parameters corresponding to the sound wave signals of the unidirectional propagating loudspeaker of the acoustic adjustment unit.

[0033] An output module is used to output the control information to the control unit.

[0034] According to a fifth aspect of the embodiments of this disclosure, a terminal device is provided, comprising:

[0035] processor;

[0036] Memory used to store the processor's executable instructions;

[0037] The processor is configured to perform the method of controlling the sound-emitting module to emit sound as described in any of the preceding claims.

[0038] According to a sixth aspect of the present disclosure, a non-transitory computer-readable storage medium is provided, which, when the instructions in the storage medium are executed by a processor of a terminal device, enables the terminal device to perform the method for controlling the sound-emitting module to emit sound as described in any of the preceding claims.

[0039] The technical solutions provided by the embodiments of this disclosure may include the following beneficial effects: In the structure of this disclosure, the acoustic adjustment unit transmits the sound wave signal unidirectionally in the rear cavity. The sound wave signal can only be transmitted in the direction away from the speaker. The sound wave signal reflected by the side wall of the rear cavity cannot be reflected back to the speaker through the acoustic adjustment unit. This is equivalent to the rear cavity volume on the non-sounding side of the speaker becoming larger, thereby improving the resonant frequency of the speaker and optimizing the bass effect of the speaker.

[0040] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0041] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0042] Figure 1 This is a schematic diagram of a sound-generating module according to an exemplary embodiment.

[0043] Figure 2 This is a circuit connection diagram of a sound-generating module according to an exemplary embodiment.

[0044] Figure 3 This is a schematic diagram of an acoustic modulation unit according to an exemplary embodiment.

[0045] Figure 4 This is a graph showing the resonant frequency versus loudness according to an exemplary embodiment.

[0046] Figure 5 This is a flowchart illustrating a method according to an exemplary embodiment.

[0047] Figure 6 This is a block diagram of an apparatus according to an exemplary embodiment.

[0048] Figure 7 This is a block diagram of a terminal device according to an exemplary embodiment. Detailed Implementation

[0049] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of apparatuses and methods consistent with some aspects of the invention as detailed in the appended claims.

[0050] The resonant frequency F0 of a loudspeaker is strongly correlated with the equivalent volume of the loudspeaker's rear cavity (the cavity on the non-sound-emitting side of the loudspeaker). To improve the bass performance of a terminal device, related technologies typically employ the following methods to increase the volume of the loudspeaker's rear cavity, thereby improving the loudspeaker's resonant frequency F0:

[0051] First, directly increasing the volume of the speaker's rear cavity in terms of structure. This method is no longer suitable for terminal devices with increasingly compact structural designs. Furthermore, with the increasing number of speakers used, the space occupied by the speaker's rear cavity is becoming more limited.

[0052] Second, fill the entire rear cavity of the speaker with bass powder. However, this method is still not effective in improving bass performance when the volume of the rear cavity is limited.

[0053] This disclosure provides a sound-generating module, including a loudspeaker and an acoustic component, including an acoustic adjustment unit disposed in the rear cavity of the loudspeaker. The acoustic adjustment unit is used to unidirectionally propagate sound wave signals received from the loudspeaker in a direction away from the loudspeaker. In the structure of this disclosure, the acoustic adjustment unit transmits sound wave signals unidirectionally in the rear cavity, and the sound wave signals can only be transmitted in a direction away from the loudspeaker. The sound wave signals reflected by the sidewalls of the rear cavity cannot be reflected back to the loudspeaker through the acoustic adjustment unit. This is equivalent to increasing the volume of the rear cavity on the non-sound-generating side of the loudspeaker, thereby improving the resonant frequency of the loudspeaker and optimizing the bass effect of the loudspeaker.

[0054] In one exemplary embodiment, such as Figures 1 to 3 As shown, the sound-generating module in this embodiment includes a speaker 10 and an acoustic component 20.

[0055] The loudspeaker 10 includes a front cavity 30 and a rear cavity 40. The acoustic assembly 20 includes an acoustic adjustment unit 201 disposed in the rear cavity 40. The acoustic adjustment unit 201 is used to propagate the sound wave signal received from the loudspeaker 10 in a unidirectional direction away from the loudspeaker 10.

[0056] In this embodiment, loudspeaker 10 refers to a loudspeaker unit or a speaker unit. The loudspeaker structure includes: a front cover, a diaphragm, a coil or voice coil, a frame, and a magnetic assembly connected in sequence. The magnetic assembly includes: a plate, a built-in magnet, and a yoke.

[0057] The sound-generating module may also include a power amplifier component 50, which is connected to the two leads of the voice coil. When a voltage is applied across the two ends of the voice coil by the power amplifier component 50, the voice coil vibrates up and down under the action of the Lorentz force in the magnetic field of the built-in magnet. The vibration of the voice coil drives the diaphragm that is bonded together to move, and the movement of the diaphragm compresses the air to produce sound.

[0058] In this embodiment, a sound outlet can be provided on the side wall of the front cavity 30. When the sound-emitting module is installed in the terminal device, the position of the sound outlet can correspond to the top of the frame of the terminal device. The sound emitted by the speaker 10 is emitted through the sound outlet.

[0059] An acoustic component 20 is installed in the rear cavity 40. The sound wave signal of the speaker 10 can propagate unidirectionally through the acoustic adjustment unit 201. However, the reflected signal formed by the sound wave signal propagating through the acoustic adjustment unit 201 cannot propagate further through the acoustic adjustment unit 201 due to its unidirectional propagation. Therefore, the rear cavity 40 is equivalent to a free space sound field, and the rear cavity 40 can be considered equivalent to an infinitely large spatial field. The increased equivalent volume of the rear cavity 40 can effectively reduce the resonant frequency F0 of the speaker 10, resulting in better low-frequency performance of the speaker 10.

[0060] Understandably, the resonant frequency F0 of the loudspeaker 10 is the frequency at which the diaphragm of the loudspeaker 10 vibrates most intensely and has the largest vibration displacement. On the loudspeaker's impedance curve (frequency-impedance curve), the resonant frequency F0 is the frequency at which the impedance value on the impedance curve first reaches its maximum value.

[0061] like Figure 4 The curve shown represents sound frequency on the horizontal axis and sound loudness on the vertical axis. SPL indicates sound pressure level. Figure 4 As can be seen, when the curve flattens out, the resonant frequency F0 shifts to lower frequencies (moves to the left), resulting in a louder sound from the speaker and a better, deeper bass response. Therefore, this embodiment can improve the bass performance of the sound-generating module.

[0062] In this embodiment, utilizing the unidirectional propagation of the acoustic adjustment unit 201, the sound wave signal of the speaker 10 is completely transmitted without reflection when passing through the acoustic adjustment unit 201. The reflected signal formed by the rear cavity 40 is also completely reflected without transmission when it reaches the acoustic adjustment unit 201. Therefore, the rear cavity 40 on the non-sound-emitting side of the speaker 10 is equivalent to an infinitely large spatial field. The vibration of the speaker 10 diaphragm is not affected by resistance factors such as reflected waves from the rear cavity 40, thus improving the resonant frequency F0 of the speaker 10 (causing F0 to decrease) and enhancing the loudness and bass effect of the speaker 10.

[0063] Furthermore, in this embodiment, the actual space occupied by the rear cavity 40 can be kept small, saving internal structural stacking space of the terminal device and facilitating the layout of other components.

[0064] In one exemplary embodiment, such as Figures 1 to 3 As shown, the acoustic component 20 in this embodiment further includes a control unit 202. The control unit 202 is connected to the acoustic adjustment unit 201, and the control unit 202 is used to adjust the driving parameters of the acoustic adjustment unit 201 so that the acoustic adjustment unit 201 propagates the sound wave signal in one direction.

[0065] In this embodiment, the control unit 202 is externally located in the rear cavity 40. The control unit 202 can be directly connected to the processor (AP) of the terminal device. According to the control signal of the processor, the control unit 202 adjusts the driving parameters output to the acoustic adjustment unit 201, thereby adjusting the acoustic characteristics of the acoustic adjustment unit 201 so that it can perform asymmetric transmission, i.e., unidirectional propagation.

[0066] In one exemplary embodiment, such as Figures 1 to 3 As shown, the acoustic adjustment unit 201 includes a gain module 2011 and a loss module 2012.

[0067] Gain module 2011 is connected or coupled to loss module 2012, and both gain module 2011 and loss module 2012 are connected to control unit 202. Control unit 202 is used to adjust the driving parameters of gain module 2011 and / or loss module 2012, so that the Hamiltonian of the acoustic wave model transmitted by the material system corresponding to acoustic adjustment unit 201 meets preset conditions, so that acoustic adjustment unit 201 unidirectionally propagates the acoustic wave signal.

[0068] In this embodiment, the sound wave signal emitted by the speaker 10 passes through the gain module 2011 and the loss module 2012 of the acoustic adjustment unit 201 in sequence before being output.

[0069] The driving parameters may include input voltage or input current. The signal gain (the amplification factor of the acoustic signal, i.e., the ratio of the acoustic signal input to the gain module 2011 to the acoustic signal output from the gain module 2011) can be adjusted by regulating the driving parameters, such as adjusting the driving parameters of the gain module 2011 to adjust the loss, or adjusting both the gain module 2011 and the loss module 2012 separately. This continues until the Hamiltonian of the adjusted acoustic adjustment unit 201 meets a preset condition, thereby enabling unidirectional transmission of the acoustic signal.

[0070] In one exemplary embodiment, such as Figures 1 to 3 As shown, the acoustic adjustment unit 201 is made of acoustic metamaterial.

[0071] Acoustic metamaterials are artificially designed periodic / aperiodic geometric structures. They include acoustic wave metamaterials and elastic wave metamaterials, which can achieve complete absorption of acoustic or elastic waves in specific frequency bands. Acoustic metamaterials also include monopolar resonant thin-film sound-absorbing structures, dipole resonant sound-absorbing structures, and helical sound-absorbing structures.

[0072] In this embodiment, within the material system corresponding to the acoustic adjustment unit 201 formed by the acoustic metamaterial, the driving parameters are used as input parameters. The gain coefficient of the gain module 2011 and / or the loss coefficient of the loss module 2012 are adjusted by adjusting the input parameters until the Hamiltonian of the acoustic wave model transmitted by the material system meets the preset conditions. At this time, the control unit 202 or the terminal device stores the driving parameters, reference gain coefficient, and reference loss coefficient corresponding to when the Hamiltonian meets the requirements.

[0073] In this embodiment, by adjusting the driving parameters, the Hamiltonian exhibits parity-time breaking and energy level singularities, thus satisfying the preset conditions. Parity-time breaking indicates that the material system tends towards asymmetric transmission during sound wave propagation, while energy level singularities indicate that the off-diagonal elements of the transmission matrix no longer possess complex Hermitian (symmetric) properties during sound wave propagation. Therefore, the entire material system exhibits non-reciprocity, meaning that the sound wave signal will exhibit different losses, phase shifts, and other characteristics when propagating in opposite directions. Consequently, the sound wave signal exhibits asymmetric transmission in the material system corresponding to the acoustic adjustment unit 201, and its transmission matrix is, for example:

[0074]

[0075] In this context, B indicates that the sound wave signal can be transmitted unidirectionally from A to C, while 0 indicates that the sound wave signal cannot be transmitted from C to A. A represents loudspeaker 10, and C represents acoustic adjustment unit 201.

[0076] In this embodiment, by adjusting the driving parameters of the acoustic adjustment unit 201 using the control unit 202, the acoustic adjustment unit 201 can be made to transmit sound waves in an asymmetrical unidirectional manner. That is, when the sound wave signal of the speaker 10 passes through the acoustic adjustment unit 201, it will be completely transmitted without reflection, and when the sound wave signal is reflected by the rear cavity 40 to the acoustic adjustment unit 201, it will be completely reflected without transmission. Thus, the rear cavity 40 on the non-sound-emitting side of the speaker 10 is equivalent to an infinitely large spatial field, and the downward vibration of the speaker 10 diaphragm will not be affected by the resistance factors such as the reflected waves from the rear cavity 40, thereby improving the resonant frequency F0 of the speaker 10 (making F0 decrease), and enhancing the loudness and bass effect of the speaker 10.

[0077] In one exemplary embodiment, such as Figures 1 to 3As shown, the acoustic adjustment unit 201 divides the rear cavity 40 into two equal parts. In this embodiment, the acoustic adjustment unit 201 is located in the middle of the rear cavity 40 to achieve unidirectional transmission of sound wave signals from the speaker 10. In this embodiment, the transmission paths of sound wave signals on both sides of the acoustic adjustment unit 201 are the same, the incoming sound wave signal will not have excessive attenuation, and the intensity of the reflected signal after passing through the sidewall of the rear cavity 40 will not be too high. The acoustic adjustment unit 201 is conducive to achieving a better unidirectional propagation effect.

[0078] In one exemplary embodiment, such as Figures 1 to 3 As shown, the acoustic adjustment unit 201 is located at the end of the rear cavity 40 near the speaker 10. In this embodiment, the acoustic adjustment unit 201 has a shorter path on the sound wave signal input side, resulting in a stronger input sound wave signal, and a longer path on the output side, resulting in attenuation and weaker reflected signal. This reduces the reflected sound wave signal, optimizes the effect of unidirectional sound wave signal propagation, and avoids the return of reflected sound wave signals.

[0079] In one exemplary embodiment, such as Figures 1 to 3 As shown, the acoustic adjustment unit 201 extends a preset distance along a preset direction, which is perpendicular to the transmission direction of the sound wave signal.

[0080] In this embodiment, the preset distance l of the acoustic adjustment unit 201 can be equal to the width d of the rear cavity 40. In the direction of sound wave signal transmission, the acoustic adjustment unit 201 includes a gain module 2011 and a loss module 2012 that are connected or coupled to each other.

[0081] By combining the extension direction and extension distance of the acoustic adjustment unit 201, the sound wave signals of the speaker 10 can all pass through the acoustic adjustment unit 201 before being transmitted, so that all sound wave signals can achieve unidirectional propagation.

[0082] In one exemplary embodiment, such as Figures 1 to 3 As shown, multiple acoustic adjustment units 201 are arranged at intervals in a direction away from the speaker 10. In this embodiment, multiple acoustic adjustment units 201 are provided to achieve better unidirectional transmission of sound wave signals.

[0083] In an exemplary embodiment, the acoustic module further includes a power amplifier component 50, which is connected to the speaker 10 and is used to control the speaker 10 to emit sound.

[0084] In this embodiment, the output ports of the power amplifier component 20 are connected to the two leads of the voice coil. The power amplifier component 20 can be a smart power amplifier (SMART PA), which belongs to Class D power amplifier devices. The power amplifier component 20 can be used to monitor the impedance of the speaker 10 affected by temperature in real time, so as to dynamically adjust the output voltage according to the impedance to drive the speaker 10 to produce sound.

[0085] In one exemplary embodiment, this disclosure also proposes a terminal device including the sound-generating module involved in the foregoing embodiments.

[0086] In this embodiment, combined with Figures 1 to 3 As shown, the processor (AP) of the terminal device is connected to the power amplifier component 50 and the control unit 202 of the sound module, respectively.

[0087] In one exemplary embodiment, this disclosure provides a method for controlling the sound output of a sound-emitting module, applied to the aforementioned terminal device. For example... Figure 5 As shown, the method includes:

[0088] S110. Obtain the current parameters of the acoustic adjustment unit in the acoustic component.

[0089] In this step, combined Figures 1 to 3 As shown, the acoustic component 20 includes an acoustic adjustment unit 201 disposed in the rear cavity 40 of the sound-generating module.

[0090] S120. In response to the difference between the current parameter and the pre-stored target parameter, determine the control information.

[0091] In this step, the control information is used to instruct the control unit 202 of the sound-generating module to adjust the current parameters of the acoustic adjustment unit 201 to the target parameters, which are used to characterize the parameters corresponding to the sound wave signals of the unidirectional propagation loudspeaker 10 of the acoustic adjustment unit 201.

[0092] S130, Output control information to the control unit.

[0093] In this step, the control unit 202 adjusts the driving parameters of the acoustic adjustment unit 201 according to the control information, so that the acoustic adjustment unit 201 transmits the sound wave signal of the speaker 10 in one direction.

[0094] In one exemplary embodiment, combined with Figures 1 to 3 As shown, the acoustic adjustment unit 201 includes a gain module 2011 and a loss module 2012.

[0095] In this embodiment, the current parameters include: current driving parameters, current gain coefficient, and current loss coefficient. Step S110 includes the following steps:

[0096] S1101. Obtain the current driving parameters of the acoustic adjustment unit, the current gain coefficient of the gain module, and the current loss coefficient of the loss module.

[0097] Step S120 includes the following steps:

[0098] S1201. Obtain configuration information. In this step, the configuration information includes the target driving parameters, target gain coefficient, and target loss coefficient.

[0099] S1202. Determine control information based on current parameters and configuration information. In this step, the terminal device queries the target drive parameters in the configuration information, and determines the control information based on the difference between the current drive parameters and the target drive parameters. The control information may also include the amount of adjustment of the drive parameters.

[0100] Alternatively, the terminal device may dynamically adjust the current gain coefficient and / or current loss coefficient based on the target gain coefficient and target loss coefficient, until the target gain coefficient and target loss coefficient are achieved.

[0101] In one exemplary embodiment, the method further includes: S100, determining configuration information. This step may be predetermined and stored.

[0102] This step S100 may include the following steps:

[0103] S1001. Using the driving parameters of the acoustic adjustment unit as input parameters, adjust the input parameters to adjust the gain coefficient of the gain module and / or the loss coefficient of the loss module until the Hamiltonian of the material system transmission sound wave model corresponding to the acoustic adjustment unit meets the preset conditions.

[0104] In this step, combined Figures 1 to 3 As shown, the acoustic modulation unit 201 is made of acoustic metamaterial. The preset conditions are: the Hamiltonian exhibits symmetry breaking (parity-time) and energy level singularities. The characteristics of symmetry breaking (parity-time) and energy level singularities are: the acoustic modulation unit 201 exhibits asymmetric transmission of sound wave signals, i.e., unidirectional transmission.

[0105] S1002. Store the target driving parameters, target gain coefficient, and target loss coefficient corresponding to the Hamiltonian when the preset conditions are met, as configuration information.

[0106] In this step, the terminal device or control unit 202 stores the target driving parameters, target gain coefficient, and target loss coefficient corresponding to the Hamiltonian when the preset conditions are met, or the correspondence between the three.

[0107] In one exemplary embodiment, this disclosure also proposes a device for controlling the sound output of a sound-emitting module, applied to the aforementioned terminal device. Wherein, as... Figure 6 As shown, the device includes: an acquisition module 110, a determination module 120, and an output module 130. The device in this embodiment is used to implement... Figure 5 The method is illustrated. The acquisition module 110 acquires the current parameters of the acoustic adjustment unit in the acoustic assembly, wherein the acoustic adjustment unit is located in the rear cavity of the sound-generating module. The determination module 120 determines control information in response to a difference between the current parameters and pre-stored target parameters. This control information instructs the control unit of the sound-generating module to adjust the current parameters of the acoustic adjustment unit to the target parameters, where the target parameters characterize the parameters corresponding to the unidirectional propagation sound wave signal of the acoustic adjustment unit's loudspeaker. The output module 130 outputs the control information to the control unit.

[0108] like Figure 7 The diagram shown is a block diagram of a terminal device. This disclosure also provides a terminal device, such as a mobile phone, computer, digital broadcasting terminal, messaging device, game console, tablet device, medical device, fitness equipment, personal digital assistant, etc.

[0109] Device 500 may include one or more of the following components: processing component 502, memory 504, power component 506, multimedia component 508, audio component 510, input / output (I / O) interface 512, sensor component 514, and communication component 516.

[0110] Processing component 502 typically controls the overall operation of device 500, such as operations associated with display, telephone calls, data communication, camera operation, and recording. Processing component 502 may include one or more processors 520 to execute instructions to perform all or part of the steps of the methods described above. Furthermore, processing component 502 may include one or more modules to facilitate interaction between processing component 502 and other components. For example, processing component 502 may include a multimedia module to facilitate interaction between multimedia component 508 and processing component 502.

[0111] Memory 504 is configured to store various types of data to support the operation of device 500. Examples of this data include instructions for any application or method operating on device 500, contact data, phonebook data, messages, pictures, videos, etc. Memory 504 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic storage, flash memory, magnetic disk, or optical disk.

[0112] The power supply component 506 provides power to the various components of the device 500. The power supply component 506 may include a power management system, one or more power sources, and other components associated with generating, managing, and distributing power to the device 500.

[0113] Multimedia component 508 includes a screen that provides an output interface between device 500 and the user. In some embodiments, the screen may include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen may be implemented as a touchscreen to receive input signals from the user. The touch panel includes one or more touch sensors to sense touches, swipes, and gestures on the touch panel. The touch sensors may sense not only the boundaries of touch or swipe actions but also the duration and pressure associated with the touch or swipe operation. In some embodiments, multimedia component 508 includes a front-facing camera and / or a rear-facing camera. When device 500 is in an operating mode, such as a shooting mode or a video mode, the front-facing camera and / or rear-facing camera may receive external multimedia data. Each front-facing camera and rear-facing camera may be a fixed optical lens system or have focal length and optical zoom capabilities.

[0114] Audio component 510 is configured to output and / or input audio signals. For example, audio component 510 includes a microphone (MIC) configured to receive external audio signals when device 500 is in an operating mode, such as call mode, recording mode, and voice recognition mode. The received audio signals may be further stored in memory 504 or transmitted via communication component 516. In some embodiments, audio component 510 also includes a speaker for outputting audio signals.

[0115] I / O interface 512 provides an interface between processing component 502 and peripheral interface modules, such as keyboards, click wheels, buttons, etc. These buttons may include, but are not limited to, home buttons, volume buttons, power buttons, and lock buttons.

[0116] Sensor assembly 514 includes one or more sensors for providing state assessments of various aspects of device 500. For example, sensor assembly 514 may detect the on / off state of device 500, the relative positioning of components such as the display and keypad of device 500, changes in the position of device 500 or a component of device 500, the presence or absence of user contact with device 500, the orientation or acceleration / deceleration of device 500, and temperature changes of device 500. Sensor assembly 514 may include a proximity sensor configured to detect the presence of nearby objects without any physical contact. Sensor assembly 514 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, sensor assembly 514 may also include an accelerometer, a gyroscope, a magnetometer, a pressure sensor, or a temperature sensor.

[0117] Communication component 516 is configured to facilitate wired or wireless communication between device 500 and other devices. Device 500 can access wireless networks based on communication standards, such as WiFi, 2G, or 3G, or combinations thereof. In one exemplary embodiment, communication component 516 receives broadcast signals or broadcast-related information from an external broadcast management system via a broadcast channel. In one exemplary embodiment, communication component 516 also includes a near-field communication (NFC) module to facilitate short-range communication. For example, the NFC module may be implemented based on radio frequency identification (RFID) technology, Infrared Data Association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology, and other technologies.

[0118] In an exemplary embodiment, device 500 may be implemented by one or more application-specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field-programmable gate arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic components to perform the methods described above.

[0119] Another exemplary embodiment of this disclosure provides a non-transitory computer-readable storage medium, such as a memory 504 including instructions that can be executed by a processor 520 of a device 500 to perform the described method. For example, the computer-readable storage medium may be a ROM, random access memory (RAM), CD-ROM, magnetic tape, floppy disk, or optical data storage device. When the instructions in the storage medium are executed by the processor of a terminal device, the terminal device is able to perform the described method.

[0120] Other embodiments of the invention will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention that follow the general principles of the invention and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of the invention are indicated by the following claims.

[0121] It should be understood that the present invention is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of the invention is limited only by the appended claims.

Claims

1. A sound-generating module, characterized in that, include: speaker; An acoustic assembly, including an acoustic adjustment unit disposed in the rear cavity of the loudspeaker; The acoustic modulation unit is used to propagate the sound wave signal received from the speaker in one direction away from the speaker; The acoustic adjustment unit extends a preset distance along a preset direction, the preset direction being perpendicular to the transmission direction of the sound wave signal, and the preset distance being equal to the width of the rear cavity of the loudspeaker; The acoustic adjustment unit divides the rear cavity into two equal parts.

2. The sound-generating module according to claim 1, characterized in that, The acoustic components also include: a control unit; The control unit is connected to the acoustic adjustment unit, and the control unit is used to adjust the driving parameters of the acoustic adjustment unit so that the acoustic adjustment unit propagates the sound wave signal in one direction.

3. The sound-generating module according to claim 2, characterized in that, The acoustic adjustment unit includes: a gain module and a loss module; The gain module is connected to the loss module, and the gain module and the loss module are respectively connected to the control unit; the control unit is used to adjust the driving parameters of the gain module and / or the driving parameters of the loss module until the Hamiltonian of the material system transmission sound wave model corresponding to the acoustic adjustment unit meets the preset conditions, so that the acoustic adjustment unit can unidirectionally propagate the sound wave signal.

4. The sound-generating module according to any one of claims 1 to 3, characterized in that, The acoustic modulation unit is made of acoustic metamaterial.

5. The sound-generating module according to any one of claims 1 to 3, characterized in that, The acoustic adjustment unit is located at the end of the rear cavity near the speaker.

6. The sound-generating module according to any one of claims 1 to 3, characterized in that, Multiple acoustic adjustment units are arranged at intervals in a direction away from the speaker.

7. A terminal device, characterized in that, Includes the sound-generating module as described in any one of claims 1 to 6.

8. A method for controlling the sound output of a sound-generating module, characterized in that, Applied to terminal devices, the method includes: Obtain the current parameters of the acoustic adjustment unit in the acoustic component, wherein the acoustic adjustment unit is located in the rear cavity of the sound-generating module; The acoustic adjustment unit extends a preset distance along a preset direction, the preset direction being perpendicular to the transmission direction of the sound wave signal, and the preset distance being equal to the width of the speaker's rear cavity; The acoustic adjustment unit divides the rear cavity into two equal parts. In response to the difference between the current parameters and the pre-stored target parameters, control information is determined, wherein the control information is used to instruct the control unit of the sound-generating module to adjust the current parameters of the acoustic adjustment unit to the target parameters, wherein the target parameters are used to characterize the parameters corresponding to the sound wave signals of the unidirectional propagating loudspeaker of the acoustic adjustment unit; The control information is output to the control unit.

9. The method according to claim 8, characterized in that, The current parameters include: current driving parameters, current gain coefficient, and current loss coefficient; The acoustic adjustment unit includes a gain module and a loss module. Obtaining the current parameters of the acoustic adjustment unit in the acoustic components includes: Obtain the current driving parameters of the acoustic adjustment unit, the current gain coefficient of the gain module, and the current loss coefficient of the loss module.

10. The method according to claim 9, characterized in that, The determined control information includes: Obtain configuration information, wherein the configuration information includes target driving parameters, target gain coefficient, and target loss coefficient; The control information is determined based on the current parameters and the configuration information.

11. The method according to claim 10, characterized in that, The method further includes: determining configuration information, wherein the determined configuration information includes: Using the driving parameters of the acoustic adjustment unit as input parameters, the input parameters are adjusted to adjust the gain coefficient of the gain module and / or the loss coefficient of the loss module until the Hamiltonian of the material system transmission sound wave model corresponding to the acoustic adjustment unit meets the preset conditions. Store the target driving parameters, target gain coefficient, and target loss coefficient corresponding to the Hamiltonian when the preset conditions are met, as configuration information.

12. A device for controlling the sound output of a sound-generating module, characterized in that, Applied to terminal devices, the device includes: The acquisition module is used to acquire the current parameters of the acoustic adjustment unit in the acoustic component, wherein the acoustic adjustment unit is located in the rear cavity of the sound-generating module; A determination module is used to determine control information in response to the difference between the current parameters and the pre-stored target parameters. The control information is used to instruct the control unit of the sound generation module to adjust the current parameters of the acoustic adjustment unit to the target parameters. The target parameters are used to characterize the parameters corresponding to the sound wave signals of the unidirectional propagating loudspeaker of the acoustic adjustment unit. An output module is used to output the control information to the control unit.

13. A terminal device, characterized in that, include: processor; Memory used to store the processor's executable instructions; The processor is configured to perform the method for controlling the sound-emitting module to emit sound as described in any one of claims 8 to 11.

14. A non-transitory computer-readable storage medium, characterized in that, When the instructions in the storage medium are executed by the processor of the terminal device, the terminal device is able to perform the method for controlling the sound-emitting module to emit sound as described in any one of claims 8 to 11.

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