CN114666721A - Wifi sound box with terminal tracking mode and control method thereof - Google Patents
Wifi sound box with terminal tracking mode and control method thereof Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04S—STEREOPHONIC SYSTEMS
- H04S7/00—Indicating arrangements; Control arrangements, e.g. balance control
- H04S7/30—Control circuits for electronic adaptation of the sound field
- H04S7/308—Electronic adaptation dependent on speaker or headphone connection
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/02—Casings; Cabinets ; Supports therefor; Mountings therein
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- H—ELECTRICITY
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- H04S—STEREOPHONIC SYSTEMS
- H04S7/00—Indicating arrangements; Control arrangements, e.g. balance control
- H04S7/30—Control circuits for electronic adaptation of the sound field
- H04S7/302—Electronic adaptation of stereophonic sound system to listener position or orientation
- H04S7/303—Tracking of listener position or orientation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
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Abstract
The invention provides a wifi sound box with a terminal tracking mode and a control method thereof, which enter the terminal tracking mode by receiving a mode switching instruction, determine a target mobile terminal of the terminal tracking mode, determine the relative positions of the target mobile terminal and at least two loudspeaker modules by at least two wifi modules of the wifi sound box and the wifi module of the target mobile terminal, receive an audio playing instruction for playing a specified audio file, read a sound field model corresponding to the audio file from a sound field model database, play the audio file according to the position of the target mobile terminal and the sound field model, can realize that any audio file can play a stereo effect, and has strong flexibility.
Description
Technical Field
The invention relates to the technical field of audio playing, in particular to a wifi sound box with a terminal tracking mode and a control method thereof.
Background
With the improvement of computer processing capability and the continuous improvement of signal processing theory, digital audio technology has been developed rapidly and has been widely applied in the fields of digital video and audio systems, High Definition Television (HDTV), Digital Audio Broadcasting (DAB), telephone conference systems, wireless communication, internet multimedia services, and the like. The auditory characteristics of the direction and depth of a sound source can be distinguished by utilizing the identification of human ears on the time difference, the sound level difference, the phase difference, the chromatic aberration and the like of sound waves, people research a stereo playing technology, perform multi-channel coding on pre-recorded audio data, and play through a sound system with multi-channel playing capability to generate a stereo surrounding auditory effect. However, in the existing stereo playing technology, on one hand, the audio file itself needs to have multi-channel data, and the stereo playing effect depends on the multi-channel scheme of the audio file itself, so that the existing stereo playing technology has strong limitation; on the other hand, because the multi-channel data in the audio file is set in advance, the sound field mode of the stereo sound can only be fixed when the audio file is played, and the sound field mode can only be restored when the audio file is played under any condition, so that the flexibility is poor.
Disclosure of Invention
The invention provides the wifi sound box with the terminal tracking mode and the control method thereof based on the problems, so that any audio file can play a stereo effect, and the control method has high flexibility.
In view of the above, a first aspect of the present invention provides a wifi loudspeaker box with a terminal tracking mode, including at least two wifi modules, at least two speaker modules, and a processing module, where each wifi module is disposed adjacent to each speaker module, and a distance between the speaker modules is greater than a preset value, and the processing module is configured to:
receiving a mode switching instruction to enter a terminal tracking mode;
determining a target mobile terminal of the terminal tracking mode;
determining the relative positions of the target mobile terminal and the at least two loudspeaker modules through the at least two wifi modules and the wifi module of the target mobile terminal;
receiving an audio playing instruction for playing a specified audio file;
reading a sound field model corresponding to the audio file from a sound field model database;
and playing the audio file according to the relative positions of the target mobile terminal and at least two loudspeaker modules and the sound field model.
Further, in the above wifi audio box with terminal tracking mode, in the step of playing the audio file according to the relative positions of the target mobile terminal and at least two speaker modules and the sound field model, the processing module is configured to:
loading the audio file to a cache;
obtaining the frequency spectrum information of the audio file from a cache and analyzing the frequency spectrum information to identify at least one audio feature in the audio file;
acquiring preset relative position information corresponding to the at least one audio feature and corresponding to the mobile terminal from the sound field model;
and controlling the time, the intensity and the phase of the at least two loudspeaker modules in playing the audio data of the audio file corresponding to the at least one audio characteristic, so that the relative positions of the sound source of the audio data and the target mobile terminal are matched with the preset relative position information.
Further, in the above wifi audio box with terminal tracking mode, in the step of obtaining the spectrum information of the audio file from the cache for parsing to identify at least one audio feature in the audio file, the processing module is configured to:
and identifying at least one audio feature in the audio file according to the vibration amplitude and shape of each fundamental wave in the frequency spectrum information of the audio file and the shape, number and amplitude of the corresponding harmonic wave.
Further, in the above wifi audio box with terminal tracking mode, after the step of playing the audio file according to the relative positions of the target mobile terminal and at least two speaker modules and the sound field model, the processing module is configured to:
periodically acquiring the relative positions of the target mobile terminal and the at least two loudspeaker modules;
when the position of the target mobile terminal is detected to be changed, determining the moving direction and the moving distance of the target mobile terminal;
and controlling the time, the intensity and the phase of the at least two loudspeaker modules in playing the audio data of the audio file corresponding to the at least one audio characteristic according to the moving direction and the moving distance of the target mobile terminal, so that the relative position of the sound source of the audio data and the target mobile terminal is matched with the preset relative position information.
Further, in the above wifi loudspeaker having a terminal tracking mode, in the step of determining the relative positions of the target mobile terminal and the at least two speaker modules through the at least two wifi modules and the wifi module of the target mobile terminal, the processing module is configured to:
determining the position of the target mobile terminal as the initial position of the target mobile terminal;
in the step of controlling, according to the moving direction and the moving distance of the target mobile terminal, the time, the intensity, and the phase of the at least two speaker modules in playing the audio data of the audio file corresponding to the at least one audio feature, so that the relative position of the sound source of the audio data and the target mobile terminal matches the preset relative position information, the processing module is configured to:
and on the basis of the initial position of the target mobile terminal, when the sum of the distances between the target mobile terminal and the at least two speaker modules is reduced or unchanged, controlling the time, the intensity and the phase of the at least two speaker modules in playing the audio data of the audio file corresponding to the at least one audio feature so as to enable the relative position of the sound source of the audio data and the initial position of the target mobile terminal to be unchanged.
The second aspect of the present invention provides a wifi sound box control method with a terminal tracking mode, including:
receiving a mode switching instruction to enter a terminal tracking mode;
determining a target mobile terminal of the terminal tracking mode;
determining the relative positions of the target mobile terminal and the at least two loudspeaker modules through at least two wifi modules of the wifi sound box and a wifi module of the target mobile terminal;
receiving an audio playing instruction for playing a specified audio file;
reading a sound field model corresponding to the audio file from a sound field model database;
and playing the audio file according to the relative positions of the target mobile terminal and at least two loudspeaker modules and the sound field model.
Further, in the above wifi speaker control method with terminal tracking mode, the step of playing the audio file according to the relative position of the target mobile terminal and at least two speaker modules and the sound field model specifically includes
Loading the audio file to a cache;
obtaining the frequency spectrum information of the audio file from a cache and analyzing the frequency spectrum information to identify at least one audio feature in the audio file;
acquiring preset relative position information corresponding to the at least one audio feature and corresponding to the mobile terminal from the sound field model;
and controlling the time, the intensity and the phase of the at least two loudspeaker modules when the audio file is played, corresponding to the audio data with the at least one audio characteristic, so that the relative positions of the sound source of the audio data and the target mobile terminal are matched with the preset relative position information.
Further, in the above wifi sound box control method with terminal tracking mode, the step of obtaining the spectrum information of the audio file from the cache for analysis to identify at least one audio feature in the audio file specifically includes:
and identifying at least one audio feature in the audio file according to the vibration amplitude and shape of each fundamental wave in the frequency spectrum information of the audio file and the shape, number and amplitude of the corresponding harmonic wave.
Further, in the above wifi sound box control method with terminal tracking mode, after the step of playing the audio file according to the relative positions of the target mobile terminal and at least two speaker modules and the sound field model, the method further includes:
periodically acquiring the relative positions of the target mobile terminal and the at least two loudspeaker modules;
when the position of the target mobile terminal is detected to be changed, determining the moving direction and the moving distance of the target mobile terminal;
and controlling the time, the intensity and the phase of the at least two loudspeaker modules in playing the audio data of the audio file corresponding to the at least one audio characteristic according to the moving direction and the moving distance of the target mobile terminal, so that the relative position of the sound source of the audio data and the target mobile terminal is matched with the preset relative position information.
Further, in the above wifi loudspeaker box control method with terminal tracking mode, the step of determining the relative position of the target mobile terminal and the at least two loudspeaker modules through the at least two wifi modules and the wifi module of the target mobile terminal specifically includes:
determining the position of the target mobile terminal as the initial position of the target mobile terminal;
controlling the time, the intensity and the phase of the at least two speaker modules in playing the audio data of the audio file corresponding to the at least one audio feature according to the moving direction and the moving distance of the target mobile terminal, so that the step of matching the relative position of the sound source of the audio data and the target mobile terminal with the preset relative position information specifically comprises the following steps:
and on the basis of the initial position of the target mobile terminal, when the sum of the distances between the target mobile terminal and the at least two speaker modules is reduced or unchanged, controlling the time, the intensity and the phase of the at least two speaker modules in playing the audio data of the audio file corresponding to the at least one audio feature so as to enable the relative position of the sound source of the audio data and the initial position of the target mobile terminal to be unchanged.
The invention provides a wifi sound box with a terminal tracking mode and a control method thereof, which enter the terminal tracking mode by receiving a mode switching instruction, determine a target mobile terminal of the terminal tracking mode, determine the relative positions of the target mobile terminal and at least two loudspeaker modules by at least two wifi modules of the wifi sound box and the wifi module of the target mobile terminal, receive an audio playing instruction for playing a specified audio file, read a sound field model corresponding to the audio file from a sound field model database, and play the audio file according to the relative positions of the target mobile terminal and at least two loudspeaker modules and the sound field model, so that any audio file can play a stereo effect and has strong flexibility.
Drawings
FIG. 1 is a schematic block diagram of a wifi speaker with a terminal tracking mode according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a wifi speaker with a terminal tracking mode according to an embodiment of the present invention;
FIG. 3 is a flowchart of a wifi speaker control method with a terminal tracking mode according to an embodiment of the present invention;
fig. 4 is a flowchart of an audio file playing control method according to an embodiment of the present invention;
FIG. 5 is a diagram illustrating an audio file playback control scenario provided by an embodiment of the present invention;
fig. 6 is a flowchart of an audio file playing control method in a mobile terminal moving state according to an embodiment of the present invention.
Detailed Description
In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced otherwise than as specifically described herein, and thus the scope of the present invention is not limited by the specific embodiments disclosed below.
In the description of the present invention, the terms "plurality" or "a plurality" refer to two or more, and unless otherwise specifically limited, the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are merely for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. The terms "connected," "mounted," "secured," and the like are to be construed broadly and include, for example, fixed connections, removable connections, or integral connections; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description herein, reference to the term "one embodiment," "some embodiments," "specific examples," or the like, means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
A wifi sound box having a terminal tracking mode and a control method thereof provided according to some embodiments of the present invention are described below with reference to fig. 1 to 6.
As shown in fig. 1, a first aspect of the present invention provides a wifi sound box with a terminal tracking mode, which includes at least two wifi modules, at least two speaker modules, and a processing module. In some embodiments of the present invention, a wifi hotspot is provided by a network device such as a wireless router in a local area network, and the at least two wifi modules are respectively connected to the wifi hotspot so as to establish a communication connection with a mobile terminal also connected in the local area network. The mobile terminal is a mobile device such as a smart phone and a tablet personal computer with a wifi module. In other embodiments of the present invention, after a wifi hotspot is established by one of the at least two wifi modules or by a wifi module of the mobile terminal, other wifi modules establish a communication connection through the wifi hotspot, which is not limited in the present invention.
As shown in fig. 2, in the wifi loudspeaker with the terminal tracking mode, each wifi module and each speaker module are adjacently arranged, and the distance between the speaker modules is greater than a preset value. In some embodiments of the present invention, each wifi module is installed at a distance as close as possible to the corresponding speaker module, so that when the at least two wifi modules determine the relative position of the mobile terminal, the position coordinates of the wifi modules are used as the position coordinates of the speaker modules, and the processing module calculates the position coordinates of each sound source in the sound field model based on the position coordinates. By adopting the embodiment, the coordinate position of the loudspeaker module can be avoided being calculated additionally, and the calculation process of the sound field distribution by the processing module is simplified. Further, in the above embodiment, the two wifi modules and the corresponding speaker modules are installed in a vertical structure, that is, the wifi modules are installed above the speakers or below the speaker modules, and the wifi modules and the corresponding speaker modules are installed with a wifi signal shielding structure therebetween, so as to avoid interference of the wifi signals to the speaker modules. In other embodiments of the present invention, in order to further reduce interference of the wifi signal to the speaker module, a certain distance is located between the installation positions of the at least two wifi modules and the corresponding installation positions of the speaker modules, and after the relative position of the mobile terminal is determined by the at least two wifi modules, the coordinate position of the speaker module is determined according to the distance and the orientation between the at least two wifi modules and the corresponding speaker modules. Furthermore, in order to improve the positioning accuracy of the relative positions between the at least two wifi modules and the mobile terminal, the installation distance between each two of the at least two speaker modules is at least greater than a preset value, preferably, the wifi loudspeaker box comprises at least two sub-loudspeaker boxes, each sub-loudspeaker box comprises at least one wifi module and one speaker module, and the processing module can be independently arranged and can be arranged in one of the sub-loudspeaker boxes.
The processing module includes a processor and a memory, as shown in fig. 3, the processing module is configured to execute the program stored in the memory by the processor to perform the following steps:
s100: and receiving a mode switching instruction to enter a terminal tracking mode. In the technical scheme of the invention, the wifi sound box has a terminal tracking mode. In some embodiments of the present invention, the wifi sound box includes a control panel, and a play mode switching button is disposed on the control panel, and the play mode of the wifi sound box can be switched to the terminal tracking mode through the play mode switching button. In other embodiments of the present invention, after any mobile terminal establishes a communication connection with the wifi sound box through a wifi hotspot, a user operates through an application program on the mobile terminal to send a mode switching instruction to the wifi sound box, and after receiving the mode switching instruction, a processing module of the wifi sound box switches a play mode to a terminal tracking mode.
S200: and determining the target mobile terminal of the terminal tracking mode. In the above-mentioned embodiment that passes through control panel of wifi audio amplifier carries out the switch of play mode, the wifi audio amplifier still includes the display screen that is used for showing the mobile terminal list and is used for selecting and confirm target mobile terminal's control button, the wifi audio amplifier is through providing the equipment of wifi focus like wireless router etc. and acquire the current connection to the equipment list of wifi focus, the user is through being connected to select on the equipment list of wifi focus in order to confirm target mobile terminal. In the above embodiment of switching the playing mode of the wifi sound box through the remote control of the mobile terminal, the mode switching instruction carries the mac address of the wifi module of the mobile terminal, and the processing module of the wifi sound box determines the mobile terminal sending the mode switching instruction as the target mobile terminal according to the mac address of the wifi module.
S300: and determining the relative positions of the target mobile terminal and the at least two loudspeaker modules through the at least two wifi modules and the wifi module of the target mobile terminal. The position of a wifi module in at least two wifi modules is the original point, with line between two wifi modules in at least two wifi modules is one of coordinate axis and is established plane orthogonal coordinate system, through two at least wifi modules and target mobile terminal's wifi module acquires two at least wifi modules with mobile terminal's wifi module distance between two liang calculates to arrive two at least wifi modules and the coordinate value of target mobile terminal's wifi module, further can calculate obtain with the coordinate value of two at least wifi module corresponding speaker module.
S400: and receiving an audio playing instruction for playing the specified audio file. In some embodiments of the present invention, the audio file is stored in a memory of the target mobile terminal, and the user sends an audio playing instruction for playing the audio file to the wifi sound box through the target mobile terminal, and sends audio data of the audio file to a processing module of the wifi sound box through the wifi module for processing and playing. However, the present invention is not limited to this, the wifi sound box may include a memory, and the audio file is stored in the memory of the wifi sound box, or the wifi sound box has an interface installed with an external memory, such as an SD card interface, a USB interface, etc., to read the audio file to be played from the external memory. In other embodiments of the present invention, the audio file may also be an audio file stored in other terminal devices in a local area network, such as a personal computer, and the wifi audio processing module receives an audio playing instruction sent by the terminal devices such as the personal computer to obtain audio data of the audio file for playing.
S500: and reading a sound field model corresponding to the audio file from a sound field model database. And the processing module reads a sound field model corresponding to the audio file from the sound field model database by identifying and analyzing the audio data of the audio file. The sound field model database can be a cloud database, and the wifi sound box is connected with the sound field model database through the internet and then reads sound field model data. Preferably, in some embodiments of the present invention, the wifi sound box includes a local sound field model database, the local sound field model database stores part of commonly used sound field models, and when the processing module does not find a sound field model corresponding to the audio file in the local sound field model database, the processing module establishes a connection with a cloud sound field model database to request to acquire the sound field model corresponding to the audio file.
S600: and playing the audio file according to the relative positions of the target mobile terminal and at least two loudspeaker modules and the sound field model. And loading the sound source coordinate position in the audio file by the sound field model corresponding to the audio file into the plane orthogonal coordinate system according to the coordinate values of the target mobile terminal and the at least two loudspeaker modules in the plane orthogonal coordinate system, so that the at least two loudspeaker modules play the audio data of the audio file according to the sound source position of the sound field model in the plane orthogonal coordinate system.
According to the wifi sound box with the terminal tracking mode, the target mobile terminal of the terminal tracking mode is determined by receiving a mode switching instruction to enter the terminal tracking mode, the relative positions of the target mobile terminal and at least two loudspeaker modules are determined by at least two wifi modules of the wifi sound box and the wifi module of the target mobile terminal, an audio playing instruction for playing a specified audio file is received, a sound field model corresponding to the audio file is read from a sound field model database, and the audio file is played according to the relative positions of the target mobile terminal and at least two loudspeaker modules and the sound field model, so that any audio file can play a stereo effect, and the wifi sound box with the terminal tracking mode has high flexibility.
As shown in fig. 4, in the above wifi speaker with terminal tracking mode, in the step of playing the audio file according to the relative positions of the target mobile terminal and at least two speaker modules and the sound field model, the processing module is configured to:
s610: and loading the audio file to a cache. In order to match the sound field model of the audio file, all or part of the audio data of the audio file needs to be loaded into a cache for analysis by the processing module.
S620: and acquiring the frequency spectrum information of the audio file from the cache for analysis so as to identify at least one audio feature in the audio file. Restoring the audio data in the audio file into frequency spectrum information carrying sound information, wherein the frequency spectrum information consists of waveforms with different frequencies and amplitudes, and analyzing the frequency spectrum information to identify at least one audio characteristic contained in the audio file.
S630: and acquiring preset relative position information corresponding to the at least one audio feature and corresponding to the mobile terminal from the sound field model. In the audio playing environment of the wifi sound box, the location of the target mobile terminal can be determined as the location of the mobile terminal user, i.e., the target listener. The sound field model comprises position information, audio characteristic information and sound intensity information of at least one sound source relative to a target listener, and the position information of the sound source relative to the target listener is preset relative position information corresponding to the at least one audio characteristic and corresponding to the mobile terminal.
And S640: and controlling the time, the intensity and the phase of the at least two loudspeaker modules in playing the audio data of the audio file corresponding to the at least one audio characteristic, so that the relative positions of the sound source of the audio data and the target mobile terminal are matched with the preset relative position information. As shown in fig. 5, it is assumed that the wifi speaker includes a first sub speaker and a second sub speaker, and a corresponding wifi module and a speaker module are disposed in each sub speaker, and when the processor module of the wifi speaker controls the first sub speaker and the speaker module of the second sub speaker to play the audio data of the at least one audio feature, the sound of the wifi speaker reaches the time difference, the intensity difference, and the phase difference of a certain distance (distance between two ears of the listener) on both sides of the target mobile terminal, so that the time difference, the intensity difference, and the phase difference of the certain distance (distance between two ears of the listener) on both sides of the target mobile terminal, which are reached by the sound emitted by the virtual sound source in fig. 5, are consistent.
Further, in the above wifi audio box with terminal tracking mode, in the step of obtaining the spectrum information of the audio file from the cache for parsing to identify at least one audio feature in the audio file, the processing module is configured to:
s645: and identifying at least one audio feature in the audio file according to the vibration amplitude and shape of each fundamental wave in the frequency spectrum information of the audio file and the shape, number and amplitude of the corresponding harmonic wave. For example, the processing module may identify human voices and sounds of different instruments according to the vibration amplitude, shape and shape, number and amplitude of each fundamental wave in the spectrum information of the audio file, where the sound field model includes position information, audio feature information and sound intensity information of at least one sound source of each different singer, instrument and the like relative to a target listener. The processing module simulates the sound source corresponding to each different audio characteristic according to the position distribution condition in the sound field model by controlling the time, the intensity and the phase of the at least two loudspeaker modules in playing the audio data of the audio file corresponding to the at least one audio characteristic, so that a listener can obtain the stereo auditory effect of physically facing the mirror of the listener.
As shown in fig. 6, in the above wifi speaker with terminal tracking mode, after the step of playing the audio file according to the relative positions of the target mobile terminal and at least two speaker modules and the sound field model, the processing module is configured to:
s700: periodically acquiring the relative positions of the target mobile terminal and the at least two loudspeaker modules;
s800: when the position of the target mobile terminal is detected to be changed, determining the moving direction and the moving distance of the target mobile terminal;
s900: and controlling the time, the intensity and the phase of the at least two loudspeaker modules in playing the audio data of the audio file corresponding to the at least one audio characteristic according to the moving direction and the moving distance of the target mobile terminal, so that the relative position of the sound source of the audio data and the target mobile terminal is matched with the preset relative position information.
Because the user promptly the target listener can not be motionless all the time, processing module needs real-time supervision the position of target mobile terminal is in order to confirm the position change of target listener, thereby makes wifi audio amplifier is playing continue to play according to the sound source that is decided promptly during the audio file with the relative position of target mobile terminal, in order to avoid the user after the shift position processing module still according to the initial position of target mobile terminal calculates the broadcast data of every speaker module, thereby makes the sound dislocation that the user actually heard cause bad auditory effect.
Further, in the above wifi loudspeaker having a terminal tracking mode, in the step of determining the relative positions of the target mobile terminal and the at least two speaker modules through the at least two wifi modules and the wifi module of the target mobile terminal, the processing module is configured to:
s350: determining the position of the target mobile terminal as the initial position of the target mobile terminal;
in some embodiments of the present invention, in the step of controlling time, intensity and phase of the at least two speaker modules in playing the audio data corresponding to the at least one audio feature of the audio file according to the moving direction and the moving distance of the target mobile terminal, so that the relative position of the sound source of the audio data and the target mobile terminal matches the preset relative position information, the processing module is configured to:
s950: and on the basis of the initial position of the target mobile terminal, when the sum of the distances between the target mobile terminal and the at least two speaker modules is reduced or unchanged, controlling the time, the intensity and the phase of the at least two speaker modules in playing the audio data of the audio file corresponding to the at least one audio feature so as to enable the relative position of the sound source of the audio data and the initial position of the target mobile terminal to be unchanged.
In order to avoid the illusion that the whole sound playing scene moves along with the mobile terminal when the user moves with the mobile terminal, after the initial position of the target mobile terminal is obtained, when the user moves in a small amplitude, the processing module controls the time, the intensity and the phase of the at least two loudspeaker modules playing the audio data of the audio file corresponding to the at least one audio characteristic, so that the relative position of the sound source of the audio data and the initial position of the target mobile terminal is unchanged. In some embodiments of the present invention, it is determined that the user is performing a small-amplitude movement when the sum of the distances of the target mobile terminal from the at least two speaker modules is reduced or constant. In some embodiments of the present invention, it is determined that the user is moving with a small amplitude in such a manner that a distance between a real-time location of the target mobile terminal and an initial location of the target mobile terminal is not greater than a threshold value. Accordingly, in some embodiments of the present invention, when the user performs a movement with a large distance, for example, when the sum of the distances between the target mobile terminal and the at least two speaker modules is becoming large and the distance between the real-time position of the target mobile terminal and the initial position of the target mobile terminal is greater than a preset value, a position where the distance between the real-time position of the target mobile terminal and the initial position of the target mobile terminal is equal to the preset value is determined as a new initial position of the target mobile terminal, and the processing module controls the time, the intensity and the phase of the at least two speaker modules playing the audio data corresponding to the at least one audio feature in the audio file, so that the relative position of the sound source of the audio data and the new initial position of the target mobile terminal is unchanged.
As shown in fig. 3, a second aspect of the present invention provides a wifi loudspeaker box control method with a terminal tracking mode, including:
s100: and receiving a mode switching instruction to enter a terminal tracking mode. In the technical scheme of the invention, the wifi sound box has a terminal tracking mode. In some embodiments of the present invention, the wifi sound box includes a control panel, and a play mode switching button is disposed on the control panel, and the play mode of the wifi sound box can be switched to the terminal tracking mode through the play mode switching button. In other embodiments of the present invention, after any mobile terminal establishes a communication connection with the wifi sound box through a wifi hotspot, a user operates through an application program on the mobile terminal to send a mode switching instruction to the wifi sound box, and after receiving the mode switching instruction, a processing module of the wifi sound box switches a play mode to a terminal tracking mode.
S200: and determining the target mobile terminal of the terminal tracking mode. In the above-mentioned embodiment that passes through control panel of wifi audio amplifier carries out the switch of play mode, the wifi audio amplifier still includes the display screen that is used for showing the mobile terminal list and is used for selecting and confirm target mobile terminal's control button, the wifi audio amplifier is through providing the equipment of wifi focus like wireless router etc. and acquire the current connection to the equipment list of wifi focus, the user is through being connected to select on the equipment list of wifi focus in order to confirm target mobile terminal. In the above embodiment of switching the playing mode of the wifi sound box through the remote control of the mobile terminal, the mode switching instruction carries the mac address of the wifi module of the mobile terminal, and the processing module of the wifi sound box determines the mobile terminal sending the mode switching instruction as the target mobile terminal according to the mac address of the wifi module.
S300: the relative position of the target mobile terminal and the at least two loudspeaker modules is determined through the at least two wifi modules of the wifi sound box and the wifi module of the target mobile terminal. The position of a wifi module in at least two wifi modules is the original point, with line between two wifi modules in at least two wifi modules is one of coordinate axis and is established plane orthogonal coordinate system, through two at least wifi modules and target mobile terminal's wifi module acquires two at least wifi modules with mobile terminal's wifi module distance between two liang calculates to arrive two at least wifi modules and the coordinate value of target mobile terminal's wifi module, further can calculate obtain with the coordinate value of two at least wifi module corresponding speaker module.
S400: and receiving an audio playing instruction for playing the specified audio file. In some embodiments of the present invention, the audio file is stored in a memory of the target mobile terminal, and the user sends an audio playing instruction for playing the audio file to the wifi sound box through the target mobile terminal, and sends audio data of the audio file to a processing module of the wifi sound box through the wifi module for processing and playing. However, the present invention is not limited to this, the wifi sound box may include a memory, and the audio file is stored in the memory of the wifi sound box, or the wifi sound box has an interface installed with an external memory, such as an SD card interface, a USB interface, etc., to read the audio file to be played from the external memory. In other embodiments of the present invention, the audio file may also be an audio file stored in another terminal device in a local area network, for example, a personal computer, and the wifi audio processing module receives an audio playing instruction sent by the terminal device such as the personal computer to obtain audio data of the audio file for playing.
S500: and reading a sound field model corresponding to the audio file from a sound field model database. And the processing module reads a sound field model corresponding to the audio file from the sound field model database by identifying and analyzing the audio data of the audio file. The sound field model database can be a cloud database, and the wifi loudspeaker box is connected with the sound field model database through the internet and then reads sound field model data. Preferably, in some embodiments of the present invention, the wifi sound box includes a local sound field model database, the local sound field model database stores part of commonly used sound field models, and when the processing module does not find a sound field model corresponding to the audio file in the local sound field model database, the processing module establishes a connection with a cloud sound field model database to request to acquire the sound field model corresponding to the audio file.
S600: and playing the audio file according to the relative positions of the target mobile terminal and at least two loudspeaker modules and the sound field model. And loading the sound source coordinate position in the audio file by the sound field model corresponding to the audio file into the plane orthogonal coordinate system according to the coordinate values of the target mobile terminal and the at least two loudspeaker modules in the plane orthogonal coordinate system, so that the at least two loudspeaker modules play the audio data of the audio file according to the sound source position of the sound field model in the plane orthogonal coordinate system.
The method for controlling the wifi sound box with the terminal tracking mode comprises the steps of entering the terminal tracking mode through a receiving mode switching instruction, determining a target mobile terminal of the terminal tracking mode, determining the relative positions of the target mobile terminal and at least two loudspeaker modules through at least two wifi modules of the wifi sound box and the wifi module of the target mobile terminal, receiving an audio playing instruction for playing a specified audio file, reading a sound field model corresponding to the audio file from a sound field model database, and playing the audio file according to the relative positions of the target mobile terminal and the at least two loudspeaker modules and the sound field model.
As shown in fig. 4, in the above wifi sound box control method with terminal tracking mode, the step of playing the audio file according to the relative positions of the target mobile terminal and at least two speaker modules and the sound field model specifically includes
S610: and loading the audio file into a cache. In order to match the sound field model of the audio file, all or part of the audio data of the audio file needs to be loaded into a cache for analysis by the processing module.
S620: and acquiring the frequency spectrum information of the audio file from the cache for analysis so as to identify at least one audio feature in the audio file. Restoring the audio data in the audio file into frequency spectrum information bearing sound information, wherein the frequency spectrum information consists of waveforms with different frequencies and amplitudes, and analyzing the frequency spectrum information to identify at least one audio characteristic contained in the audio file.
S630: and acquiring preset relative position information corresponding to the at least one audio feature and corresponding to the mobile terminal from the sound field model. In the audio playing environment of the wifi sound box, the location of the target mobile terminal can be determined as the location of the mobile terminal user, i.e., the target listener. The sound field model comprises position information, audio characteristic information and sound intensity information of at least one sound source relative to a target listener, and the position information of the sound source relative to the target listener is preset relative position information corresponding to the at least one audio characteristic and corresponding to the mobile terminal.
S640: and controlling the time, the intensity and the phase of the at least two loudspeaker modules when the audio file is played, corresponding to the audio data with the at least one audio characteristic, so that the relative positions of the sound source of the audio data and the target mobile terminal are matched with the preset relative position information. As shown in fig. 5, it is assumed that the wifi sound box includes a first sub sound box and a second sub sound box, a corresponding wifi module and a speaker module are disposed in each sub sound box, and when the processor module of the wifi sound box controls the first sub sound box and the speaker module of the second sub sound box to play the audio data of the at least one audio feature, the sound of the wifi sound box reaches the time difference, the intensity difference, and the phase difference of a certain distance (distance between two ears of a listener) on both sides of the target mobile terminal, so that the sound reaches the time difference, the intensity difference, and the phase difference of a certain distance (distance between two ears of a listener) on both sides of the target mobile terminal are consistent with the sound emitted by the virtual sound source in fig. 5.
Further, in the above wifi sound box control method with terminal tracking mode, the step of obtaining the spectrum information of the audio file from the cache for analysis to identify at least one audio feature in the audio file specifically includes:
s645: and identifying at least one audio feature in the audio file according to the vibration amplitude and shape of each fundamental wave in the frequency spectrum information of the audio file and the shape, number and amplitude of the corresponding harmonic wave. For example, the processing module may identify human voices and sounds of different instruments according to the vibration amplitude, shape and shape of each fundamental wave and the shape, number and amplitude of its corresponding harmonic in the spectrum information of the audio file, and the sound field model includes position information, audio feature information and sound intensity information of at least one sound source of each different singer, instrument and the like relative to a target listener. The processing module simulates the sound source corresponding to each different audio characteristic according to the position distribution condition in the sound field model by controlling the time, the intensity and the phase of the at least two loudspeaker modules in playing the audio data of the audio file corresponding to the at least one audio characteristic, so that a listener can obtain the stereo hearing effect of the face mirror.
As shown in fig. 6, in the above wifi sound box control method with terminal tracking mode, after the step of playing the audio file according to the relative positions of the target mobile terminal and at least two speaker modules and the sound field model, the method further includes:
s700: periodically acquiring the relative positions of the target mobile terminal and the at least two loudspeaker modules;
s800: when the position of the target mobile terminal is detected to be changed, determining the moving direction and the moving distance of the target mobile terminal;
s900: and controlling the time, the intensity and the phase of the at least two loudspeaker modules in playing the audio data of the audio file corresponding to the at least one audio characteristic according to the moving direction and the moving distance of the target mobile terminal, so that the relative position of the sound source of the audio data and the target mobile terminal is matched with the preset relative position information.
Because the user promptly the target listener can not be motionless all the time, processing module needs real-time supervision the position of target mobile terminal is in order to confirm the position change of target listener, thereby makes wifi audio amplifier is playing continue to play according to the sound source that is decided promptly during the audio file with the relative position of target mobile terminal, in order to avoid the user after the shift position processing module still according to the initial position of target mobile terminal calculates the broadcast data of every speaker module, thereby makes the sound dislocation that the user actually heard cause bad auditory effect.
Further, in the above wifi sound box control method with terminal tracking mode, the step of determining the relative positions of the target mobile terminal and the at least two speaker modules through the at least two wifi modules and the wifi module of the target mobile terminal specifically includes:
s350: determining the position of the target mobile terminal as the initial position of the target mobile terminal;
controlling the time, the intensity and the phase of the at least two speaker modules in playing the audio data of the audio file corresponding to the at least one audio feature according to the moving direction and the moving distance of the target mobile terminal, so that the step of matching the relative position of the sound source of the audio data and the target mobile terminal with the preset relative position information specifically comprises the following steps:
s950: and on the basis of the initial position of the target mobile terminal, when the sum of the distances between the target mobile terminal and the at least two speaker modules is reduced or unchanged, controlling the time, the intensity and the phase of the at least two speaker modules in playing the audio data of the audio file corresponding to the at least one audio feature so as to enable the relative position of the sound source of the audio data and the initial position of the target mobile terminal to be unchanged.
In order to avoid the illusion that the whole sound playing scene moves along with the mobile terminal when the user moves with the mobile terminal, after the initial position of the target mobile terminal is obtained, when the user moves in a small amplitude, the processing module controls the time, the intensity and the phase of the at least two loudspeaker modules playing the audio data of the audio file corresponding to the at least one audio characteristic, so that the relative position of the sound source of the audio data and the initial position of the target mobile terminal is unchanged. In some embodiments of the present invention, it is determined that the user is performing a small-amplitude movement when the sum of the distances of the target mobile terminal from the at least two speaker modules is reduced or constant. In some embodiments of the present invention, it is determined that the user is moving with a small amplitude in such a manner that a distance between a real-time location of the target mobile terminal and an initial location of the target mobile terminal is not greater than a threshold value. Accordingly, in some embodiments of the present invention, when the user performs a movement with a large distance, for example, the sum of the distances between the target mobile terminal and the at least two speaker modules is becoming large, and the distance between the real-time position of the target mobile terminal and the initial position of the target mobile terminal is greater than a preset value, a position where the distance between the real-time position of the target mobile terminal and the initial position of the target mobile terminal is equal to the preset value is determined as a new initial position of the target mobile terminal, and the processing module controls the at least two speaker modules to play the time, the intensity, and the phase of the audio data corresponding to the at least one audio feature in the audio file, so that the relative position of the sound source of the audio data and the new initial position of the target mobile terminal is not changed.
It is noted that, herein, relational terms such as first and second, and the like may be 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 a process, method, article, or apparatus that comprises the element.
While embodiments in accordance with the invention have been described above, these embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments described. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention and various embodiments with various modifications as are suited to the particular use contemplated. The invention is limited only by the claims and their full scope and equivalents.
Claims (10)
1. The utility model provides a wifi audio amplifier with terminal tracking mode which characterized in that, including being provided with two at least wifi modules, two at least speaker modules and processing module, every the wifi module with every the speaker module is adjacent to be set up, just distance between the speaker module is greater than the default, processing module is configured to:
receiving a mode switching instruction to enter a terminal tracking mode;
determining a target mobile terminal of the terminal tracking mode;
determining the relative positions of the target mobile terminal and the at least two loudspeaker modules through the at least two wifi modules and the wifi module of the target mobile terminal;
receiving an audio playing instruction for playing a specified audio file;
reading a sound field model corresponding to the audio file from a sound field model database;
and playing the audio file according to the relative positions of the target mobile terminal and at least two loudspeaker modules and the sound field model.
2. A wifi loudspeaker with terminal tracking mode according to claim 1, characterized by that, in the step of playing the audio file according to the relative position of the target mobile terminal and at least two speaker modules and the sound field model, the processing module is configured to:
loading the audio file to a cache;
obtaining the frequency spectrum information of the audio file from a cache and analyzing the frequency spectrum information to identify at least one audio feature in the audio file;
acquiring preset relative position information corresponding to the at least one audio feature and corresponding to the mobile terminal from the sound field model;
and controlling the time, the intensity and the phase of the at least two loudspeaker modules in playing the audio data of the audio file corresponding to the at least one audio characteristic, so that the relative positions of the sound source of the audio data and the target mobile terminal are matched with the preset relative position information.
3. The wifi sound box with terminal tracking mode as claimed in claim 2, wherein in the step of obtaining the spectrum information of the audio file from the cache for parsing to identify at least one audio feature in the audio file, the processing module is configured to:
and identifying at least one audio feature in the audio file according to the vibration amplitude and shape of each fundamental wave in the frequency spectrum information of the audio file and the shape, number and amplitude of the corresponding harmonic wave.
4. A wifi loudspeaker with terminal tracking mode according to claims 1-3 characterized by that after the step of playing the audio file according to the relative position of the target mobile terminal and at least two speaker modules and the sound field model, the processing module is configured to:
periodically acquiring the relative positions of the target mobile terminal and the at least two loudspeaker modules;
when the position of the target mobile terminal is detected to be changed, determining the moving direction and the moving distance of the target mobile terminal;
and controlling the time, the intensity and the phase of the at least two loudspeaker modules in playing the audio data of the audio file corresponding to the at least one audio characteristic according to the moving direction and the moving distance of the target mobile terminal, so that the relative position of the sound source of the audio data and the target mobile terminal is matched with the preset relative position information.
5. The wifi loudspeaker box with terminal tracking mode as claimed in claim 4, characterized in that in the step of determining the relative position of the target mobile terminal and at least two speaker modules through the at least two wifi modules and the wifi module of the target mobile terminal, the processing module is configured to:
determining the position of the target mobile terminal as the initial position of the target mobile terminal;
in the step of controlling, according to the moving direction and the moving distance of the target mobile terminal, the time, the intensity, and the phase of the at least two speaker modules in playing the audio data of the audio file corresponding to the at least one audio feature, so that the relative position of the sound source of the audio data and the target mobile terminal matches the preset relative position information, the processing module is configured to:
and on the basis of the initial position of the target mobile terminal, when the sum of the distances between the target mobile terminal and the at least two speaker modules is reduced or unchanged, controlling the time, the intensity and the phase of the at least two speaker modules in playing the audio data of the audio file corresponding to the at least one audio feature so as to enable the relative position of the sound source of the audio data and the initial position of the target mobile terminal to be unchanged.
6. A wifi sound box control method with a terminal tracking mode is characterized by comprising the following steps:
receiving a mode switching instruction to enter a terminal tracking mode;
determining a target mobile terminal of the terminal tracking mode;
determining the relative positions of the target mobile terminal and the at least two loudspeaker modules through at least two wifi modules of the wifi sound box and a wifi module of the target mobile terminal;
receiving an audio playing instruction for playing a specified audio file;
reading a sound field model corresponding to the audio file from a sound field model database;
and playing the audio file according to the relative positions of the target mobile terminal and at least two loudspeaker modules and the sound field model.
7. The method as claimed in claim 6, wherein the step of playing the audio file according to the relative position between the target mobile terminal and at least two speaker modules and the sound field model comprises playing the audio file according to the sound field model
Loading the audio file to a cache;
obtaining the frequency spectrum information of the audio file from a cache for analysis so as to identify at least one audio feature in the audio file;
acquiring preset relative position information corresponding to the at least one audio feature and corresponding to the mobile terminal from the sound field model;
and controlling the time, the intensity and the phase of the at least two loudspeaker modules in playing the audio data of the audio file corresponding to the at least one audio characteristic, so that the relative positions of the sound source of the audio data and the target mobile terminal are matched with the preset relative position information.
8. The method of claim 7, wherein the step of obtaining the spectrum information of the audio file from the cache for parsing to identify at least one audio feature in the audio file specifically comprises:
and identifying at least one audio feature in the audio file according to the vibration amplitude and shape of each fundamental wave in the frequency spectrum information of the audio file and the shape, number and amplitude of the corresponding harmonic wave.
9. The wifi sound box control method with terminal tracking mode as claimed in claims 6-8, characterized in that after the step of playing the audio file according to the relative position of the target mobile terminal and at least two speaker modules and the sound field model, further comprising:
periodically acquiring the relative positions of the target mobile terminal and the at least two loudspeaker modules;
when the position of the target mobile terminal is detected to be changed, determining the moving direction and the moving distance of the target mobile terminal;
and controlling the time, the intensity and the phase of the at least two loudspeaker modules in playing the audio data of the audio file corresponding to the at least one audio characteristic according to the moving direction and the moving distance of the target mobile terminal, so that the relative positions of the sound source of the audio data and the target mobile terminal are matched with the preset relative position information.
10. The wifi sound box control method with terminal tracking mode according to claim 8 or 9, characterized by that, the step of determining the relative position of the target mobile terminal and at least two speaker modules through the wifi modules of the target mobile terminal and the at least two wifi modules specifically includes:
determining the position of the target mobile terminal as the initial position of the target mobile terminal;
controlling the time, the intensity and the phase of the at least two speaker modules in playing the audio data of the audio file corresponding to the at least one audio feature according to the moving direction and the moving distance of the target mobile terminal, so that the step of matching the relative position of the sound source of the audio data and the target mobile terminal with the preset relative position information specifically comprises the following steps:
and on the basis of the initial position of the target mobile terminal, when the sum of the distances between the target mobile terminal and the at least two speaker modules is reduced or unchanged, controlling the time, the intensity and the phase of the at least two speaker modules in playing the audio data of the audio file corresponding to the at least one audio feature so as to enable the relative position of the sound source of the audio data and the initial position of the target mobile terminal to be unchanged.
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