CN112954549B - Sound effect control method and device, sound box equipment and storage medium - Google Patents
Sound effect control method and device, sound box equipment and storage medium Download PDFInfo
- Publication number
- CN112954549B CN112954549B CN202110210554.4A CN202110210554A CN112954549B CN 112954549 B CN112954549 B CN 112954549B CN 202110210554 A CN202110210554 A CN 202110210554A CN 112954549 B CN112954549 B CN 112954549B
- Authority
- CN
- China
- Prior art keywords
- metal
- capacitance value
- passive radiator
- loudspeaker
- low
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R3/00—Circuits for transducers, loudspeakers or microphones
- H04R3/02—Circuits for transducers, loudspeakers or microphones for preventing acoustic reaction, i.e. acoustic oscillatory feedback
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2430/00—Signal processing covered by H04R, not provided for in its groups
- H04R2430/01—Aspects of volume control, not necessarily automatic, in sound systems
Abstract
The application discloses audio control method is applied to audio amplifier equipment, audio amplifier equipment's casing inboard is provided with the metal sheet that corresponds with passive radiator's metal balancing weight, audio control method includes: applying a constant voltage to the metal plate and the metal weight; sending an audio signal to a speaker and driving the passive radiator with the speaker; obtaining a current capacitance value between the metal plate and the metal balancing weight, and determining the state of the passive radiator according to the current capacitance value; and if the passive radiator is in a collision critical state, sending a low-frequency suppression command to the loudspeaker so as to enable the low-frequency output voltage of the loudspeaker not to be increased. This application can avoid passive radiator to bump the shell and produce the noise, improves the audio playback quality of audio amplifier. The application also discloses a sound effect control device, a sound box device and a storage medium, and the sound box device has the beneficial effects.
Description
Technical Field
The present disclosure relates to audio processing technologies, and in particular, to a sound effect control method and apparatus, a sound box device, and a storage medium.
Background
In recent years, intelligent sound box products are rapidly developed, 5G communication is rapidly developed along with the increase of intelligent household products, and the intelligent sound box has huge development potential and market demand in the future as an important human-computer interaction inlet of the Internet of things. Compare with traditional audio amplifier, intelligent audio amplifier needs more functional modules of integration in less volume in order to satisfy various use scenes and user experience, and contradictory relation between cost and the acoustic performance often more stands out than traditional audio amplifier, in order to obtain the optimal acoustic performance in limited space, reduce cost simultaneously, and many intelligent audio amplifiers adopt the combination of full speaker collocation Passive Radiator (PR).
Carry on passive radiator's intelligent audio amplifier, thereby rely on the inside air drive passive radiator of initiative speaker compression cavity reinforcing bass, can be selective through the resonant frequency of adjusting passive radiator strengthen the optimization to the acoustic curve. The existing passive radiator is assembled inside the cavity through processes such as gluing, and when the passive radiator vibrates, if the low-frequency driving force of the loudspeaker is too large, the passive radiator is caused to collide the shell to generate noise.
Therefore, how to avoid the passive radiator from hitting the housing to generate noise and improve the audio playing quality of the sound box is a technical problem that needs to be solved by those skilled in the art at present.
Disclosure of Invention
The application aims to provide a sound effect control method and device, a sound box device and a storage medium, which can prevent a passive radiator from colliding with a shell to generate noise and improve the audio playing quality of the sound box.
In order to solve the technical problem, the present application provides an audio control method, which is applied to a sound box device, wherein a metal plate corresponding to a metal counterweight block of a passive radiator is arranged on the inner side of a casing of the sound box device, and the audio control method comprises the following steps:
applying a constant voltage to the metal plate and the metal weight;
sending an audio signal to a speaker and driving the passive radiator with the speaker;
obtaining a current capacitance value between the metal plate and the metal balancing weight, and determining the state of the passive radiator according to the current capacitance value;
if the passive radiator is in a collision critical state, sending a low-frequency suppression command to the loudspeaker so as to enable the low-frequency output voltage of the loudspeaker not to be increased; and the low-frequency output voltage is the voltage of the loudspeaker for playing the low-frequency signal.
Optionally, after applying a constant voltage to the metal plate and the metal weight, the method further includes:
controlling the loudspeaker to play a test audio and continuously increasing the low-frequency output voltage of the loudspeaker;
acquiring capacitance value change information between the metal plate and the metal counterweight block, and determining the maximum capacitance value between the metal plate and the metal counterweight block according to the capacitance value change information;
determining a preset capacitance value corresponding to the collision critical state according to the maximum capacitance value;
and if the current capacitance value between the metal plate and the metal counterweight block is greater than or equal to the preset capacitance value, determining that the passive radiator is in a collision critical state.
Optionally, if the number of the metal plates is greater than 1, determining the preset capacitance value corresponding to the collision critical state according to the maximum capacitance value includes:
setting the minimum value of the maximum capacitance values corresponding to all the metal plates as a target capacitance value;
setting the product of the target capacitance value and a preset coefficient as a preset capacitance value corresponding to the collision critical state; wherein the preset coefficient is less than 1 and greater than 0.
Optionally, the continuously increasing the low-frequency output voltage of the speaker includes:
increasing the low-frequency output voltage of the loudspeaker according to a preset period; the low-frequency output voltage of the current period is greater than the low-frequency output voltage of the previous period;
correspondingly, determining the maximum capacitance value between the metal plate and the metal counterweight according to the capacitance value change information includes:
judging whether the capacitance values of the current period and the last period are changed or not according to the capacitance value change information;
and if not, setting the capacitance value corresponding to the current period as the maximum capacitance value between the metal plate and the metal counterweight block.
Optionally, after sending the low-frequency suppression instruction to the speaker, the method further includes:
judging whether the passive radiator recovers to a normal working state or not according to the current capacitance value between the metal plate and the metal balancing weight;
and if so, canceling the low-frequency suppression instruction sent to the loudspeaker.
Optionally, the method further includes:
and setting a frequency range corresponding to the low-frequency signal according to the resonance frequency of the passive radiator.
Optionally, the plurality of metal plates are attached to the inner side of the casing of the sound box device, and the metal counter weight and the plurality of metal plates form a capacitor after a constant voltage is applied to the metal plates and the metal counter weight.
The application still provides an audio controlling means, is applied to audio amplifier equipment, audio amplifier equipment's casing inboard is provided with the metal sheet that corresponds with passive radiator's metal balancing weight, audio controlling means includes:
a constant voltage applying module for applying a constant voltage to the metal plate and the metal weight;
the loudspeaker control module is used for sending an audio signal to a loudspeaker and driving the passive radiator by utilizing the loudspeaker;
the capacitance detection module is used for acquiring a current capacitance value between the metal plate and the metal counterweight block and determining the state of the passive radiator according to the current capacitance value;
the voltage control module is used for sending a low-frequency suppression instruction to the loudspeaker if the passive radiator is in a collision critical state so that the low-frequency output voltage of the loudspeaker is not increased any more; wherein the low-frequency output voltage is a voltage of the loudspeaker for playing low-frequency signals.
The application also provides a storage medium, on which a computer program is stored, and the computer program realizes the steps executed by the sound effect control method when executed.
The application also provides sound box equipment which comprises a memory and a processor, wherein a computer program is stored in the memory, and the processor calls the computer program in the memory to realize the step executed by the sound effect control method.
Optionally, the plurality of metal plates are attached to the inner side of the casing of the sound box device, and the metal counter weight and the plurality of metal plates form a capacitor after a constant voltage is applied to the metal plates and the metal counter weight.
The application provides a sound control method is applied to audio amplifier equipment, audio amplifier equipment's casing inboard is provided with the metal sheet that corresponds with passive radiator's metal balancing weight, sound control method includes: applying a constant voltage to the metal plate and the metal weight; sending an audio signal to a speaker and driving the passive radiator with the speaker; acquiring a current capacitance value between the metal plate and the metal counterweight block, and determining the state of the passive radiator according to the current capacitance value; if the passive radiator is in a collision critical state, sending a low-frequency suppression instruction to the loudspeaker so that the low-frequency output voltage of the loudspeaker is not increased any more; wherein the low-frequency output voltage is a voltage of the loudspeaker for playing low-frequency signals.
This application is applied to audio amplifier equipment, audio amplifier equipment's casing inboard is provided with the metal sheet that corresponds with passive radiator's metal balance weight, makes to form electric capacity between metal sheet and the metal balance weight through applying constant voltage to metal sheet and metal balance weight. As the speaker drives the passive radiator, the distance between the metal weight block and the metal plate of the passive radiator varies. This application confirms passive radiator's state according to the current capacitance value between metal sheet and the metal balancing weight, if passive radiator is in collision critical state, then explains that passive radiator will collide the casing, this application through to the speaker sends the low frequency and suppresses the low frequency output voltage that the instruction made the speaker and no longer increases, and then avoids passive radiator collision casing. This application utilizes the capacitance value between metal sheet and the metallization balancing weight to reflect the distance between passive radiator and the casing, suppresses the capacitance value that the instruction avoids between metal sheet and the metallization balancing weight through the low frequency and continues to increase when passive radiator is in the critical state of collision, avoids passive radiator to continue to remove to the casing promptly. Therefore, the passive radiator can be prevented from colliding with the shell to generate noise, and the audio playing quality of the sound box is improved. This application still provides an audio controlling means, audio amplifier equipment and a storage medium simultaneously, has above-mentioned beneficial effect, no longer gives unnecessary details here.
Drawings
In order to more clearly illustrate the embodiments of the present application, the drawings needed for the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings can be obtained by those skilled in the art without inventive effort.
FIG. 1 is a flowchart of a sound effect control method according to an embodiment of the present disclosure;
fig. 2 is a schematic structural diagram of a sound box device according to an embodiment of the present application;
FIG. 3 is a flowchart of a method for detecting a collision threshold state according to an embodiment of the present disclosure;
fig. 4 is a schematic layout view of a metal plate of a sound box apparatus according to an embodiment of the present disclosure;
fig. 5 is a flowchart of a method for obtaining a threshold capacitance corresponding to a collision critical state according to an embodiment of the present disclosure;
fig. 6 is a flowchart of a volume control method according to an embodiment of the present disclosure;
fig. 7 is a schematic diagram illustrating a waste level of audio control performance according to an embodiment of the present disclosure.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Referring to fig. 1, fig. 1 is a flowchart of a sound effect control method according to an embodiment of the present disclosure.
The specific steps may include:
s101: applying a constant voltage to the metal plate and the metal counterweight;
fig. 2 is a schematic structural diagram of the sound box device provided in the embodiment of the present application, and as shown in fig. 2, the sound box device may include a flexible board 201, a main board 202, a sound outlet 203, a metal board 204, a reflection cone 205, and a passive radiator 206, where the passive radiator 206 includes a support, a diaphragm, and a metal weight 2061. In this embodiment, a metal plate corresponding to the metal weight of the passive radiator is disposed inside the casing of the sound box device, as shown in fig. 2, the metal plate 204 disposed inside the casing is disposed opposite to the metal weight 2061 of the passive radiator 206.
The embodiment can continuously apply the constant voltage to the metal plate and the metal counterweight after the sound box equipment is started. The mainboard can be connected with metal balancing weight and metal sheet respectively through the soft board (being FPC board), applys constant voltage to metal sheet and metal balancing weight to form electric capacity between metal sheet and the metal balancing weight. Specifically, the sound box device may be configured such that the plurality of metal plates are attached to an inner side of a housing of the sound box device, and the metal weight block and the plurality of metal plates form a capacitor after a constant voltage is applied to the metal plates and the metal weight block.
S102: sending an audio signal to a speaker and driving a passive radiator with the speaker;
the sound box device in this embodiment plays audio through a combination of the speaker and the passive radiator. Wherein, passive radiator relies on the inside air of speaker compression passive radiator cavity to carry out work, and after audio signal was received to the speaker promptly, the audio frequency that this audio signal corresponds can be broadcast to drive passive radiator work obtains the bass effect. It will be appreciated that the loudspeaker drives the passive radiator by a low frequency output, the higher the low frequency output of the loudspeaker the greater the amplitude of the passive radiator.
S103: obtaining a current capacitance value between the metal plate and the metal balancing weight, and determining the state of the passive radiator according to the current capacitance value;
wherein, when passive radiator receives the speaker drive and during operation, passive radiator's metal balancing weight has the vibration, and the big amplitude of metal balancing weight of the big of low frequency output of speaker is big more, and when the amplitude of metal balancing weight was greater than the critical value, passive radiator will send the noise with the shell collision of audio amplifier equipment.
This embodiment applys constant voltage in advance between metal sheet and metal balancing weight, and the capacitance value between metal sheet and the metal balancing weight is negative correlation with the distance of the two, and when the metal balancing weight was driven and is vibrated by the speaker, the distance between the big metal balancing weight of vibration range and the metal sheet was more close, and the capacitance value between metal sheet and the metal balancing weight is big more simultaneously. Further, when the passive radiator collides with the housing, even if the driving force of the speaker continues to be increased, the distance between the metal weight and the metal plate is not changed any more, and the capacitance value between the metal plate and the metal weight is not increased any more. According to the above analysis, there is a corresponding relationship between the capacitance between the metal plate and the metal weight and the state of the passive radiator, and this embodiment may preset the corresponding relationship between the state of the passive radiator and the capacitance, and then determine the state of the passive radiator according to the current capacitance.
It is understood that the state of the passive radiator in this embodiment may include a collided state, a normal operation state and a collision critical state, the collided state refers to a state in which the passive radiator has collided with the enclosure, the normal operation state refers to a state in which the passive radiator can normally operate and the driving force of the speaker continues to be increased without colliding with the enclosure, and the collision critical state refers to a critical state in which the passive radiator is about to collide with the enclosure.
S104: if the passive radiator is in a collision critical state, sending a low-frequency suppression instruction to the loudspeaker so that the low-frequency output voltage of the loudspeaker is not increased any more;
before the step, an operation of judging whether the passive radiator is in a collision critical state may also exist, and if the passive radiator is in the collision critical state, a low-frequency suppression instruction is sent to the loudspeaker, so that the low-frequency output voltage of the loudspeaker is not increased any more. The low frequency output voltage of speaker no longer increases, is equivalent to the speaker and is not increasing to passive radiator's drive power, can avoid passive radiator to be in the condition that the drive power of collision critical state time speaker to passive radiator continues to increase through above-mentioned mode, and then avoids passive radiator and shell collision. The low-frequency output voltage is a voltage at which the speaker plays a low-frequency signal, where the low-frequency signal is a signal having a frequency less than the resonant frequency, and before this step, there may be an operation of setting a frequency range corresponding to the low-frequency signal according to the resonant frequency of the passive radiator, for example, 0 to 80Hz may be used as the frequency range corresponding to the low-frequency signal.
This embodiment is applied to audio amplifier equipment, audio amplifier equipment's casing inboard is provided with the metal sheet that corresponds with passive radiator's metal balance weight, makes to form electric capacity between metal sheet and the metal balance weight through applying constant voltage to metal sheet and metal balance weight. As the speaker drives the passive radiator, the distance between the metal weight block and the metal plate of the passive radiator varies. This embodiment confirms the state of passive radiator according to the current capacitance value between metal sheet and the metal balancing weight, if the passive radiator is in collision critical state, explains that the passive radiator will collide the casing, this embodiment through to the speaker sends the low frequency and suppresses the instruction and make the low frequency output voltage of speaker no longer increase, and then avoids the passive radiator to collide the casing. The distance between passive radiator and the casing is reflected to the capacitance value that this embodiment utilized between metal sheet and the metallized balancing weight, suppresses the instruction through the low frequency when passive radiator is in the critical state of collision and avoids the capacitance value between metal sheet and the metallized balancing weight to continue to increase, avoids passive radiator to continue to move to the casing promptly. Therefore, the embodiment can avoid the passive radiator from colliding the shell to generate noise, and improve the audio playing quality of the sound box.
Referring to fig. 3, fig. 3 is a flowchart of a method for detecting a collision critical state according to an embodiment of the present application, where this embodiment is a further description of how to determine whether a passive radiator is in a collision critical state in the embodiment corresponding to fig. 1, and a further implementation may be obtained by combining this embodiment with the embodiment corresponding to fig. 1, where this embodiment may include the following steps after applying a constant voltage to the metal plate and the metal weight:
s301: controlling the loudspeaker to play a test audio and continuously increasing the low-frequency output voltage of the loudspeaker;
s302: acquiring capacitance value change information between a metal plate and a metal counterweight block, and determining the maximum capacitance value between the metal plate and the metal counterweight block according to the capacitance value change information;
s303: determining a preset capacitance value corresponding to the collision critical state according to the maximum capacitance value;
s304: and if the current capacitance value between the metal plate and the metal counterweight block is greater than or equal to a preset capacitance value, determining that the passive radiator is in a collision critical state.
The process of determining the preset capacitance value corresponding to the collision critical state is introduced in the process, the vibration amplitude of the metal counterweight block is increased by continuously increasing the low-frequency output voltage of the loudspeaker, and the maximum capacitance value is determined according to the capacitance value change information between the metal plate and the metal counterweight block. When the capacitance value between the metal plate and the metal counterweight block reaches the maximum, the passive radiator collides with the shell. Therefore, the preset capacitance value corresponding to the collision critical state can be determined according to the maximum capacitance value, and when the capacitance value between the metal plate and the metal balancing weight is greater than or equal to the preset capacitance value, the passive radiator is about to collide with the shell. Specifically, the preset capacitance value in this embodiment is smaller than the maximum capacitance value, and as a possible implementation manner, the preset capacitance value is 0.95 × the maximum capacitance value.
Specifically, if the number of the metal plates is greater than 1, the process of determining the preset capacitance value corresponding to the collision critical state according to the maximum capacitance value includes: setting the minimum value of the maximum capacitance values corresponding to all the metal plates as a target capacitance value; setting the product of the target capacitance value and a preset coefficient as a preset capacitance value corresponding to the collision critical state; wherein the preset coefficient is less than 1 and greater than 0.
It can be understood that, because the position relation of each metal sheet and metal balancing weight is different, the maximum capacitance value that each metal sheet corresponds is all different, in order to avoid passive radiator and shell to collide among the practical application process, can regard the minimum among the maximum capacitance value that all metal sheets correspond as the target capacitance value, and then utilize the product of target capacitance value and preset coefficient to set up preset capacitance value, preset coefficient can be 0.95, 0.97 etc..
Further, this embodiment may continuously increase the low frequency output voltage of the speaker by: increasing the low-frequency output voltage of the loudspeaker according to a preset period; and the low-frequency output voltage of the current period is greater than the low-frequency output voltage of the previous period. By the above manner, the low-frequency output voltage in each period can be made the same, and the value of the low-frequency output voltage is larger as the period number is larger. Correspondingly, each output period of the low-frequency output voltage has capacitance value change information corresponding to the output period, and the embodiment can also judge whether the capacitance values of the current period and the previous period change or not according to the capacitance value change information; if so, continuing to execute the operation of increasing the low-frequency output voltage of the loudspeaker according to a preset period; and if not, setting the maximum capacitance value corresponding to the current period as the maximum capacitance value between the metal plate and the metal counterweight block.
Further, after the low-frequency suppression instruction is sent to the loudspeaker, whether the passive radiator recovers to a normal working state can be judged according to the current capacitance value between the metal plate and the metal counterweight block; and if so, canceling the low-frequency suppression instruction sent to the loudspeaker. The capacitance value corresponding to the normal working state is lower than the capacitance value corresponding to the collision critical state.
The flow described in the above embodiment is explained below by an embodiment in practical use.
In the related art, since the vibration position information of the passive radiator cannot be obtained, it is necessary to set a safe output power suitable for all products and to apply this output power limit to the control of the output voltage of the horn. The low frequency performance of each product can be wasted to varying degrees due to differences in performance and package size between different products. The root of this conflict is that the passive radiators are passively driven to vibrate, the vibration state of the passive radiators cannot be obtained by the system in real time, and in order to avoid noise, the driving force of the loudspeaker can be limited to a level safe for all the passive radiators, so that the performance of the system at low frequency is partially wasted. Through the scheme that this embodiment provided, can carry out real time monitoring with the vibration position of passive radiator, and then the input of dynamic adjustment speaker for the passive radiator of every product can all exert the biggest performance in its current vibration space range.
The sound box device provided in this embodiment includes a housing, a horn (i.e., a speaker), a main board, and a passive radiator. The shell includes the epitheca, the mesochite, and the inferior valve, loudspeaker are fixed on the inferior valve, and passive radiator assembles on the mesochite, and the position of mesochite equipment passive radiator and the position of inferior valve equipment loudspeaker all have out the sound hole. The passive radiator mainly comprises a support, a vibrating diaphragm and a balancing weight, wherein the balancing weight is made of metal, an interface is arranged on the support of the passive radiator, and the interface and the balancing weight are connected through a soft board. The mesochite surface opposite to the balancing weight is equipped with the metal sheet, and the metal sheet passes through the soft board and is connected with the mainboard. The main board is provided with a plurality of MIC, audio chips, power amplifiers, capacitors and other devices. The metal plate and the balancing weight of the passive radiator form a capacitor, and the mainboard chip monitors the capacitance value.
Further, in the present embodiment, the speaker is assembled downward on the lower case, and the lower case has a reflection cone for reflecting high frequency sound. Passive radiator's vibrating diaphragm is the silica gel material, and the soft board of connecting the interface on balancing weight and the PR support is placed in vibrating diaphragm book ring inside when vibrating diaphragm injection moulding, and balancing weight and interface are connected respectively to the soft board both ends. The number of the passive radiators is two, and the passive radiators are symmetrically distributed and assembled on the middle shell. Referring to fig. 4, fig. 4 is a schematic layout view of metal plates of a sound box apparatus according to an embodiment of the present application, and as shown in fig. 4, the number of the metal plates may be multiple, and the metal plates are vertically arranged on the inner surface of the middle shell 207.
Referring to fig. 5, fig. 5 is a flowchart of a method for acquiring a threshold capacitance corresponding to a collision critical state according to an embodiment of the present application, where the process of acquiring the threshold capacitance is as follows: (1) the sound box is powered on, and the main board respectively supplies power to the metal platesAnd a constant voltage U0 is applied to the clump weight, and the plurality of metal plates and the clump weight respectively carry electric charges to form capacitors, namely initial capacitors C1 and C2 … Cn. (2) The horn continuously increases the low-frequency power output until the passive radiator hits the middle shell, the amplitude of the passive radiator reaches the maximum at the moment, the capacitance value is not increased any more, the upper limit of the capacitance value C1max and the upper limit of the capacitance value C2max … Cnmax corresponding to each metal sheet are obtained, and the threshold capacitance C is set UL 0.95 Min (C1max, C2max … Cnmax). A threshold capacitance C UL The test can be carried out and set in the control software when the product is delivered.
Referring to fig. 6, fig. 6 is a flowchart of a volume control method according to an embodiment of the present disclosure, where a volume control process is as follows: when the loudspeaker box normally works, the main board supplies power to the loudspeaker through the power amplifier, and the loudspeaker makes sound and then drives the passive radiator to vibrate to strengthen the low frequency. When the volume is m, the capacitance formed between the weight block and each metal sheet is Cm1, Cm2 … Cmn, and the capacitance is inversely proportional to the distance d between the weight block and the corresponding metal sheet. When the user increases the volume, the chip first compares Cm1, Cm2 … Cmn and C at the current volume UL If Cm1, Cm2 … Cmn are all less than the threshold capacitance C UL The low frequency output voltage may be increased with increasing volume if one or more of Cm1, Cm2 … Cmn is greater than the threshold capacitance C UL Then, the low frequency output voltage is not increased any more, and only the medium and high frequency output voltages are increased.
In the above embodiment, the vibration position of the passive radiator is converted into capacitance value information and incorporated into the audio algorithm control, and the capacitance threshold of the product is obtained through testing at the time of product factory test, where the threshold is determined by the acoustic parameters and the assembly size of the product. And determining whether the low-frequency power has a space for improving or not by monitoring the real-time capacitance value and comparing the capacitance value with a set capacitance threshold value. Referring to fig. 7, fig. 7 is a schematic diagram illustrating a waste degree of audio control performance according to an embodiment of the present application, where the upper half of each bar graph in fig. 7 is a waste performance, so that it can be seen that if a uniform security input is used, performance waste of different degrees will be caused; by adopting the scheme of the embodiment, different input thresholds have the performance margin of the common elm, and the degree of performance waste is reduced. The embodiment can furthest exert the acoustic performance of each product and achieve the effect of low-frequency performance customized control, so that each product can obtain the optimal acoustic performance under the same hardware design, and the competitiveness and the cost advantage of the product are improved.
The embodiment of the application still provides an audio controlling means, and this audio controlling means can be applied to audio amplifier equipment, audio amplifier equipment's casing inboard is provided with the metal sheet that corresponds with passive radiator's metal balancing weight, audio controlling means includes:
a constant voltage applying module for applying a constant voltage to the metal plate and the metal weight;
the loudspeaker control module is used for sending an audio signal to a loudspeaker and driving the passive radiator by utilizing the loudspeaker;
the capacitance detection module is used for acquiring a current capacitance value between the metal plate and the metal counterweight block and determining the state of the passive radiator according to the current capacitance value;
the voltage control module is used for sending a low-frequency suppression instruction to the loudspeaker if the passive radiator is in a collision critical state so that the low-frequency output voltage of the loudspeaker is not increased any more; wherein the low-frequency output voltage is a voltage of the loudspeaker for playing low-frequency signals.
This embodiment is applied to audio amplifier equipment, audio amplifier equipment's casing inboard is provided with the metal sheet that corresponds with passive radiator's metal balance weight, makes to form electric capacity between metal sheet and the metal balance weight through applying constant voltage to metal sheet and metal balance weight. As the speaker drives the passive radiator, the distance between the metal weight block and the metal plate of the passive radiator varies. This embodiment confirms the state of passive radiator according to the current capacitance value between metal sheet and the metal balancing weight, if the passive radiator is in collision critical state, explains that the passive radiator will collide the casing, this embodiment through to the speaker sends the low frequency and suppresses the instruction and make the low frequency output voltage of speaker no longer increase, and then avoids the passive radiator to collide the casing. The distance between passive radiator and the casing is reflected to the capacitance value that this embodiment utilized between metal sheet and the metallized balancing weight, suppresses the instruction through the low frequency when passive radiator is in the critical state of collision and avoids the capacitance value between metal sheet and the metallized balancing weight to continue to increase, avoids passive radiator to continue to move to the casing promptly. Therefore, the passive radiator can be prevented from colliding the shell to generate noise, and the audio playing quality of the sound box is improved.
Optionally, the method further includes:
the testing module is used for controlling the loudspeaker to play a testing audio and continuously increasing the low-frequency output voltage of the loudspeaker after constant voltage is applied to the metal plate and the metal balancing weight; the capacitance value change information between the metal plate and the metal counterweight block is acquired, and the maximum capacitance value between the metal plate and the metal counterweight block is determined according to the capacitance value change information;
the preset capacitance value setting module is used for determining a preset capacitance value corresponding to the collision critical state according to the maximum capacitance value;
and the state judgment module is used for judging that the passive radiator is in a collision critical state if the current capacitance value between the metal plate and the metal counterweight block is greater than or equal to a preset capacitance value.
Further, the preset capacitance value setting module is configured to set a minimum value of maximum capacitance values corresponding to all the metal plates as a target capacitance value if the number of the metal plates is greater than 1; the product of the target capacitance value and a preset coefficient is set as a preset capacitance value corresponding to the collision critical state; wherein the preset coefficient is less than 1 and greater than 0.
Further, the test module is used for increasing the low-frequency output voltage of the loudspeaker according to a preset period; the low-frequency output voltage of the current period is greater than the low-frequency output voltage of the previous period; the capacitance value change information is also used for judging whether the capacitance values of the current period and the previous period change or not; and if not, setting the capacitance value corresponding to the current period as the maximum capacitance value between the metal plate and the metal counterweight block.
Further, the method also comprises the following steps:
the instruction cancellation module is used for judging whether the passive radiator recovers to a normal working state or not according to the current capacitance value between the metal plate and the metal balancing weight after the low-frequency suppression instruction is sent to the loudspeaker; and if so, canceling the low-frequency suppression instruction sent to the loudspeaker.
Further, the method also comprises the following steps:
and the low-frequency signal setting module is used for setting a frequency range corresponding to the low-frequency signal according to the resonance frequency of the passive radiator.
Furthermore, the metal plates are attached to the inner side of the casing of the sound box device, and the metal balancing weight and the metal plates form a capacitor after constant voltage is applied to the metal plates and the metal balancing weight.
Since the embodiments of the apparatus portion and the method portion correspond to each other, please refer to the description of the embodiments of the method portion for the embodiments of the apparatus portion, which is not repeated here.
The present application also provides a storage medium having a computer program stored thereon, which when executed, may implement the steps provided by the above-described embodiments. The storage medium may include: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.
The application further provides a sound box device, which may include a memory and a processor, wherein the memory stores a computer program, and the processor calls the computer program in the memory to implement the steps provided by the above embodiment. Of course, the speaker device may further include various network interfaces, power supplies, and other components. As a possible implementation manner, a plurality of metal plates are attached to the inner side of the casing of the sound box device, and the metal counter weight and the plurality of metal plates form a capacitor after a constant voltage is applied to the metal plates and the metal counter weight.
The embodiments are described in a progressive mode in the specification, the emphasis of each embodiment is on the difference from the other embodiments, and the same and similar parts among the embodiments can be referred to each other. The device disclosed in the embodiment corresponds to the method disclosed in the embodiment, so that the description is simple, and the relevant points can be referred to the description of the method part. It should be noted that, for those skilled in the art, it is possible to make several improvements and modifications to the present application without departing from the principle of the present application, and such improvements and modifications also fall within the scope of the claims of the present application.
It is further noted that, in the present specification, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in the process, method, article, or apparatus that comprises the element.
Claims (10)
1. The utility model provides a sound control method which characterized in that is applied to audio amplifier equipment, audio amplifier equipment's casing inboard is provided with the metal sheet that corresponds with passive radiator's metal balancing weight, sound control method includes:
applying a constant voltage to the metal plate and the metal weight;
sending an audio signal to a speaker and driving the passive radiator with the speaker;
obtaining a current capacitance value between the metal plate and the metal balancing weight, and determining the state of the passive radiator according to the current capacitance value;
if the passive radiator is in a collision critical state, sending a low-frequency suppression instruction to the loudspeaker so that the low-frequency output voltage of the loudspeaker is not increased any more; the low-frequency output voltage is the voltage of the loudspeaker for playing low-frequency signals, and the passive radiator works by means of the loudspeaker for compressing air in the cavity of the passive radiator.
2. The sound effect control method according to claim 1, further comprising, after applying a constant voltage to the metal plate and the metal weight, the steps of:
controlling the loudspeaker to play a test audio and continuously increasing the low-frequency output voltage of the loudspeaker;
acquiring capacitance value change information between the metal plate and the metal counterweight block, and determining the maximum capacitance value between the metal plate and the metal counterweight block according to the capacitance value change information;
determining a preset capacitance value corresponding to the collision critical state according to the maximum capacitance value;
and if the current capacitance value between the metal plate and the metal counterweight block is greater than or equal to the preset capacitance value, determining that the passive radiator is in a collision critical state.
3. The sound effect control method according to claim 2, wherein if the number of the metal plates is greater than 1, determining the predetermined capacitance value corresponding to the collision threshold state according to the maximum capacitance value comprises:
setting the minimum value of the maximum capacitance values corresponding to all the metal plates as a target capacitance value;
setting the product of the target capacitance value and a preset coefficient as a preset capacitance value corresponding to the collision critical state; wherein the preset coefficient is less than 1 and greater than 0.
4. The sound effect control method according to claim 2, wherein the continuously increasing the low frequency output voltage of the speaker comprises:
increasing the low-frequency output voltage of the loudspeaker according to a preset period; the low-frequency output voltage of the current period is greater than the low-frequency output voltage of the previous period;
correspondingly, determining the maximum capacitance value between the metal plate and the metal counterweight according to the capacitance value change information includes:
judging whether the capacitance values of the current period and the last period are changed or not according to the capacitance value change information;
if not, setting the capacitance value corresponding to the current period as the maximum capacitance value between the metal plate and the metal counterweight block.
5. The sound-effect control method according to any one of claims 1-4, wherein after sending the low-frequency suppression instruction to the loudspeaker, the method further comprises:
judging whether the passive radiator recovers to a normal working state or not according to the current capacitance value between the metal plate and the metal balancing weight;
and if so, canceling the low-frequency suppression instruction sent to the loudspeaker.
6. The sound-effect control method according to any one of claims 1 to 4, further comprising:
and setting a frequency range corresponding to the low-frequency signal according to the resonance frequency of the passive radiator.
7. The utility model provides an audio controlling means, its characterized in that is applied to audio amplifier equipment, audio amplifier equipment's casing inboard is provided with the metal sheet that corresponds with passive radiator's metal balancing weight, audio controlling means includes:
a constant voltage applying module for applying a constant voltage to the metal plate and the metal weight;
the loudspeaker control module is used for sending an audio signal to a loudspeaker and driving the passive radiator by utilizing the loudspeaker;
the capacitance detection module is used for acquiring a current capacitance value between the metal plate and the metal counterweight block and determining the state of the passive radiator according to the current capacitance value;
the voltage control module is used for sending a low-frequency suppression instruction to the loudspeaker if the passive radiator is in a collision critical state so that the low-frequency output voltage of the loudspeaker is not increased any more; the low-frequency output voltage is the voltage of the loudspeaker for playing low-frequency signals, and the passive radiator works by means of the loudspeaker for compressing air in the cavity of the passive radiator.
8. Loudspeaker box equipment, characterized in that a metal plate corresponding to a metal counterweight of a passive radiator is arranged on the inner side of a casing of the loudspeaker box equipment, the loudspeaker box equipment comprises a memory and a processor, a computer program is stored in the memory, and the processor realizes the steps of the sound effect control method according to any one of claims 1 to 6 when calling the computer program in the memory.
9. The speaker device as claimed in claim 8, wherein a plurality of said metal plates are attached to an inner side of a housing of said speaker device, and said metal weight and said plurality of said metal plates form a capacitance after a constant voltage is applied to said metal plates and said metal weight.
10. A storage medium having stored thereon computer-executable instructions which, when loaded and executed by a processor, carry out the steps of the sound-effect control method according to any one of claims 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110210554.4A CN112954549B (en) | 2021-02-25 | 2021-02-25 | Sound effect control method and device, sound box equipment and storage medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110210554.4A CN112954549B (en) | 2021-02-25 | 2021-02-25 | Sound effect control method and device, sound box equipment and storage medium |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112954549A CN112954549A (en) | 2021-06-11 |
| CN112954549B true CN112954549B (en) | 2022-09-09 |
Family
ID=76246100
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110210554.4A Active CN112954549B (en) | 2021-02-25 | 2021-02-25 | Sound effect control method and device, sound box equipment and storage medium |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112954549B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1408194A (en) * | 2000-02-17 | 2003-04-02 | 美国技术公司 | Acoustically asymmetric bandpass loudspeaker with multiple acoustic filters |
| CN202269004U (en) * | 2011-10-12 | 2012-06-06 | 珠海京科数字科技有限公司 | Portable music player |
| CN106165445A (en) * | 2014-02-26 | 2016-11-23 | 帝瓦雷公司 | For controlling the equipment of speaker |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012039586A (en) * | 2010-08-03 | 2012-02-23 | Junichi Kakumoto | Speaker system and acoustic reproduction apparatus |
| CN205179353U (en) * | 2015-12-08 | 2016-04-20 | 歌尔声学股份有限公司 | Miniature sounder |
| WO2018107512A1 (en) * | 2016-12-14 | 2018-06-21 | 华为技术有限公司 | Method for adjusting diaphragm vibration balancing position and speaker |
| CN107222807A (en) * | 2017-05-11 | 2017-09-29 | 深圳市金立通信设备有限公司 | A kind of speaker control method and intelligent terminal |
| CN107396275B (en) * | 2017-07-21 | 2019-05-17 | 维沃移动通信有限公司 | A kind of amplitude detecting device, method and mobile terminal |
| CN111770418A (en) * | 2020-06-03 | 2020-10-13 | 上海创功通讯技术有限公司 | Loudspeaker and sound generating mechanism |
-
2021
- 2021-02-25 CN CN202110210554.4A patent/CN112954549B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1408194A (en) * | 2000-02-17 | 2003-04-02 | 美国技术公司 | Acoustically asymmetric bandpass loudspeaker with multiple acoustic filters |
| CN202269004U (en) * | 2011-10-12 | 2012-06-06 | 珠海京科数字科技有限公司 | Portable music player |
| CN106165445A (en) * | 2014-02-26 | 2016-11-23 | 帝瓦雷公司 | For controlling the equipment of speaker |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112954549A (en) | 2021-06-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10425738B2 (en) | Evacuation of liquid from acoustic space | |
| US10090819B2 (en) | Signal processor for loudspeaker systems for enhanced perception of lower frequency output | |
| CN112544090B (en) | Audio circuit | |
| US20190230438A1 (en) | Psychoacoustics for improved audio reproduction, power reduction, and speaker protection | |
| CN103037289A (en) | Control of a loudspeaker output | |
| US10344821B2 (en) | Vibration suppressing apparatus and vibration suppressing method thereof | |
| CN111385714B (en) | Method for determining voice coil temperature of loudspeaker, electronic device and storage medium | |
| JP2008166897A5 (en) | ||
| CN113132850B (en) | Speaker parameter configuration method and related device | |
| CN111343540B (en) | Piano audio processing method and electronic equipment | |
| CN106060729A (en) | Control method and electronic equipment | |
| CN111128167B (en) | Far-field voice awakening method and device, electronic product and storage medium | |
| CN103339962A (en) | Electronic device | |
| CN112954549B (en) | Sound effect control method and device, sound box equipment and storage medium | |
| CN106303883A (en) | A kind of detect the method for loudspeaker voice coil vibration displacement, device and loudspeaker monomer | |
| CN108282725B (en) | Integrated back cavity pressure sensing sound amplifying system and audio player | |
| CN106686493B (en) | The method and system of adjust automatically sound quality | |
| CN204442674U (en) | A kind of loud speaker module | |
| CN208369846U (en) | Centring disk, vibration component and loudspeaker | |
| CN112866877B (en) | Speaker control method, speaker control device, electronic apparatus, and storage medium | |
| WO2017220816A1 (en) | Method for simulating total harmonic distortion of a loudspeaker | |
| CN114283773A (en) | Method and apparatus for reducing environmental noise for voice device, and storage medium | |
| CN208590109U (en) | A kind of public address system and audio player of integrated back cavity pressure perception | |
| CN111083605A (en) | Audio information playing method and device, electronic equipment and storage medium | |
| US11438682B2 (en) | Digital microphone with reduced processing noise |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |