CN112312245B - Audio playing method and related device - Google Patents
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- H—ELECTRICITY
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- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/02—Casings; Cabinets ; Supports therefor; Mountings therein
- H04R1/026—Supports for loudspeaker casings
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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
- H04R5/00—Stereophonic arrangements
- H04R5/02—Spatial or constructional arrangements of loudspeakers
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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
- H04R5/00—Stereophonic arrangements
- H04R5/04—Circuit arrangements, e.g. for selective connection of amplifier inputs/outputs to loudspeakers, for loudspeaker detection, or for adaptation of settings to personal preferences or hearing impairments
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- H04R2499/00—Aspects covered by H04R or H04S not otherwise provided for in their subgroups
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Abstract
The embodiment of the application discloses an audio playing method and a related device, wherein the method comprises the following steps: acquiring a first audio signal; performing frequency division processing on the first audio signal to obtain a first target audio signal and a second target audio signal, wherein the frequency of the second target audio signal is higher than a first preset threshold value; sending the first target audio signal to at least one loudspeaker, and playing the first target audio signal through the at least one loudspeaker; respectively sending the second target audio signal to at least one second wireless communication module of at least one external sound box through at least one first wireless communication module of at least one base; and playing the second target audio signal through the at least one external sound box. The embodiment of the application is beneficial to improving stereo and surround sound experience of the projection equipment.
Description
Technical Field
The present application relates to the field of audio playing technologies, and in particular, to an audio playing method and a related apparatus.
Background
The existing projector products generally have built-in sound boxes, the audio is played through the built-in sound boxes when the audio is played, the small sound boxes of the fixed built-in loudspeaker are limited by the size and the volume of the whole projector, so the distance layout of sound fields of the left and right sound channel sound boxes is also greatly limited, when a movie is watched, the experience of sound image localization stereo and surround sound is poor, for example, an airplane in a movie scene screen flies from left to right, the sound is from left to right, but the distance of the built-in fixed loudspeaker is very small and cannot be as wide as that of the projection screen, so a user basically cannot feel the change process of a sound synchronization image from left to right, and the experience of sound image stereotaxis is poor. Built-in fixed position speakers do not extend the sound field for left and right stereo and surround sound.
Disclosure of Invention
The embodiment of the application provides an audio playing method and a related device, so as to improve stereo and surround sound experience of projection equipment.
In a first aspect, an embodiment of the present application provides an audio playing method, which is applied to a projection device, where the projection device includes: the projection equipment comprises at least one loudspeaker and at least one base which are arranged on the projection equipment, and at least one external sound box corresponding to the at least one base, wherein each base in the at least one base is provided with a first wireless communication module, each external sound box in the at least one external sound box is provided with a second wireless communication module, the projection equipment is in communication connection with the second wireless communication module in the external sound box corresponding to the base through the first wireless communication module of each base, each base is provided with at least one suspension device, and the suspension devices are used for suspending the external sound boxes; the method comprises the following steps:
acquiring a first audio signal;
performing frequency division processing on the first audio signal to obtain a first target audio signal and a second target audio signal, wherein the frequency of the second target audio signal is higher than a first preset threshold;
sending the first target audio signal to the at least one loudspeaker, and playing the first target audio signal through the at least one loudspeaker;
respectively sending the second target audio signal to at least one second wireless communication module of the at least one external sound box through at least one first wireless communication module of the at least one base;
and playing the second target audio signal through the at least one external sound box.
In a second aspect, an embodiment of the present application provides an audio playing apparatus, which is applied to a projection device, where the projection device includes: the projection equipment comprises at least one loudspeaker and at least one base which are arranged on the projection equipment, and at least one external sound box corresponding to the at least one base, wherein each base in the at least one base is provided with a first wireless communication module, each external sound box in the at least one external sound box is provided with a second wireless communication module, the projection equipment is in communication connection with the second wireless communication module in the external sound box corresponding to the base through the first wireless communication module of each base, each base is provided with at least one suspension device, and the suspension devices are used for suspending the external sound boxes; the device comprises:
an acquisition unit configured to acquire a first audio signal;
the frequency dividing unit is used for performing frequency dividing processing on the first audio signal to obtain a first target audio signal and a second target audio signal, wherein the frequency of the second target audio signal is higher than a first preset threshold value;
the first playing unit is used for sending the first target audio signal to the at least one loudspeaker and playing the first target audio signal through the at least one loudspeaker;
the second playing unit is used for sending the second target audio signal to at least one second wireless communication module of the at least one external sound box through at least one first wireless communication module of the at least one base respectively; and playing the second target audio signal through the at least one external sound box.
In a third aspect, an embodiment of the present application provides a projection device, which includes a processor, a memory, and a communication interface, where the processor, the memory, and the communication interface are connected to each other, where the communication interface is used to receive or send data, the memory is used to store application program codes for the projection device to perform the foregoing methods, and the processor is configured to perform any one of the foregoing methods.
In a fourth aspect, embodiments of the present application provide a computer-readable storage medium, a computer program for electronic data exchange, where the computer program enables a computer to perform some or all of the steps described in any one of the methods of the first aspect of the embodiments of the present application.
In a fifth aspect, embodiments of the present application provide a computer program product, where the computer program product includes a non-transitory computer-readable storage medium storing a computer program, where the computer program is operable to cause a computer to perform some or all of the steps as described in any one of the methods of the first aspect of the embodiments of the present application. The computer program product may be a software installation package.
In an embodiment of the application, a projection device first obtains a first audio signal, then performs frequency division processing on the first audio signal to obtain a first target audio signal and a second target audio signal, wherein a frequency of the second target audio signal is higher than a first preset threshold, then sends the first target audio signal to at least one speaker on the projection device, plays the first target audio signal through the at least one speaker, sends the second target audio signal to at least one second wireless communication module of at least one external speaker through at least one first wireless communication module of at least one base on the projection device, and then plays the second target audio signal through the at least one external speaker. It can be seen that, in the embodiment of the application, after the projection device acquires the audio signal, the audio signal can be divided into two parts, one part of the audio signal is played through the speaker arranged on the projection device, and the other part of the audio signal is played through the external sound box.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for the embodiments or the prior art descriptions 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 it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1A is a schematic structural diagram of a projection apparatus provided in an embodiment of the present application;
FIG. 1B is a schematic diagram of another exemplary projection apparatus according to an embodiment of the disclosure;
fig. 2A is a schematic flowchart of an audio playing method according to an embodiment of the present application;
fig. 2B is a schematic view of a usage scenario of a projection apparatus according to an embodiment of the present application;
fig. 2C is a schematic diagram illustrating an audio playing method according to an embodiment of the present application;
fig. 3A is a block diagram illustrating functional units of an audio playing apparatus according to an embodiment of the present disclosure;
fig. 3B is a block diagram illustrating functional units of another audio playing apparatus according to an embodiment of the present disclosure.
Detailed Description
In order to make the technical solutions of the present application better understood by those skilled in the art, 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 only a part of the embodiments of the present application, and not all the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making any creative effort belong to the protection scope of the present application.
The terms "first," "second," and the like in the description and claims of the present application and in the above-described drawings are used for distinguishing between different objects and not for describing a particular order. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein may be combined with other embodiments.
"plurality" means two or more. "and/or" describes the association relationship of the associated object, indicating that there may be three relationships, for example, a and/or B, which may indicate: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship.
Embodiments of the present application are described below with reference to the accompanying drawings.
Referring to fig. 1A, fig. 1A is a schematic structural diagram of a projection apparatus according to an embodiment of the present disclosure. The projection device comprises at least one speaker 10 (two speakers are schematically shown in the figure), at least one base 20 (two bases are schematically shown in the figure), and at least one external sound box 30 (two external sound boxes are schematically shown in the figure), wherein each base 20 is provided with a first wireless communication module, each external sound box 30 is provided with a second wireless communication module, each base 20 can be in communication connection with a second wireless communication module in any external sound box 30 through the first wireless communication module, for example, one base 20 can be in communication connection with a second wireless communication module in the external sound box 30 corresponding to the base 20 through the first wireless communication module and sends an audio signal to the base; and each base is provided with at least one suspension device, and this suspension device is used for suspending external audio amplifier, and specifically, every suspension device can be used for suspending an external audio amplifier. Certainly, in actual use, the external sound box can be suspended on the base for use, or the external sound box is taken away from the base and placed at any required position. And each external sound box can also be internally provided with a rechargeable battery, an audio amplifier and a loudspeaker, and after receiving the audio signals, the external sound boxes amplify the audio signals through the internal audio amplifiers and then play the amplified audio signals through the loudspeakers. The corresponding projection equipment can be provided with a wireless charging device, and the external sound box can be wirelessly charged through the wireless charging device after being reset. The projection equipment can also be provided with an amplifier, and the audio signal which needs to be sent to the loudspeaker on the projection equipment is amplified by the amplifier on the projection equipment and then sent to the loudspeaker on the projection equipment for playing.
Referring to fig. 1B, fig. 1B is a schematic diagram illustrating another composition structure of a projection device according to an embodiment of the present disclosure, as shown in the figure, the projection device 100 includes a processor 110, a memory 120, a communication interface 130, and one or more programs 121, where the one or more programs 121 are stored in the memory 120 and configured to be executed by the processor 110, and the one or more programs 121 include instructions for executing any one of the steps of the method embodiments described below.
Referring to fig. 2A, fig. 2A is a schematic flowchart of an audio playing method provided in an embodiment of the present application, applied to the projection apparatus shown in fig. 1A or fig. 1B, and as shown in fig. 2A, the audio playing method includes the following operations:
s201, the projection device acquires a first audio signal.
In a specific implementation, the first audio signal may be an audio signal to be played by the projection device, and the manner for the projection device to acquire the first audio signal may be: the audio signal is obtained through the signal source interface, or the audio signal is obtained through wireless communication, and the like, which is not limited herein.
S202, the projection equipment performs frequency division processing on the first audio signal to obtain a first target audio signal and a second target audio signal.
Wherein the frequency of the second target audio signal is higher than a first preset threshold; and the frequency of the first target audio signal is lower than the first preset threshold. The first preset threshold may be set as desired.
S203, the projection equipment sends the first target audio signal to the at least one loudspeaker, and the first target audio signal is played through the at least one loudspeaker.
S204, the projection equipment sends the second target audio signal to at least one second wireless communication module of the at least one external sound box through at least one first wireless communication module of the at least one base respectively.
S205, the projection device plays the second target audio signal through the at least one external sound box.
In specific implementation, please refer to fig. 2B, where fig. 2B is a schematic view of a usage scenario of a projection device provided in an embodiment of the present application, and as shown in the figure, the figure schematically shows three usage scenarios of the projection device, including a projection device 20, an external speaker 21, and a user position 22 shown. In a scene 1, at least one external sound box is suspended on a base; in the scene 2, at least one external sound box is separated from a suspension area above the base and is placed on two sides of the projection equipment, so that the left and right stereo expansion can be better realized; in scene 3, at least one external sound box can be placed behind the user, which is beneficial to better realizing surround sound expansion.
The user can place external audio amplifier in the position that needs when using, because the people can more clearly distinguish for low frequency audio signal to the direction location of high frequency audio signal, and at least one speaker on the projection equipment receives the restriction of projection equipment size, stereo and surround sound present that can not be fine, consequently, can broadcast the audio signal of relative low frequency through the speaker on the projection equipment, the audio signal of relative high frequency plays through external audio amplifier, be favorable to the user to use better stereo and surround sound experience sense when projection equipment.
In the embodiment of the application, after the projection device obtains a first audio signal, the projection device performs frequency division processing on the first audio signal to obtain a first target audio signal and a second target audio signal, wherein the frequency of the second target audio signal is higher than a first preset threshold value, then the first target audio signal is sent to at least one loudspeaker on the projection device, the first target audio signal is played through the at least one loudspeaker, the second target audio signal is sent to at least one second wireless communication module of at least one external sound box through at least one first wireless communication module of at least one base on the projection device, and then the second target audio signal is played through the at least one external sound box. It can be seen that, in the embodiment of the application, after the projection device acquires the audio signal, the audio signal can be divided into two parts, one part of the audio signal is played through the speaker arranged on the projection device, and the other part of the audio signal is played through the external sound box.
In one possible example, the at least one speaker comprises: a first speaker, a second speaker, the at least one base comprising: first base, second base, at least one external audio amplifier includes: the first external sound box corresponds to the first base, and the second external sound box corresponds to the second base; the first target audio signal includes: a first left channel audio signal, a first right channel audio signal; the second target audio signal includes: a second left channel audio signal, a second right channel audio signal;
the sending the second target audio signal to at least one second wireless communication module of the at least one external speaker through at least one first wireless communication module of the at least one base, respectively, includes: sending the second left channel audio signal to a second wireless communication module of the first external sound box through a first wireless communication module of the first base; sending the second right channel audio signal to a second wireless communication module of the second external speaker through a first wireless communication module of the second base; the playing the second target audio signal through the at least one external speaker includes: playing the second left channel audio signal through the first external sound box; playing the second right channel audio signal through the second external sound box;
the sending the first target audio signal to the at least one speaker, and playing the first target audio signal through the at least one speaker, includes: sending the first left channel audio signal to the first loudspeaker, and playing the first left channel audio signal through the first loudspeaker; and sending the first right channel audio signal to the second loudspeaker, and playing the first right channel audio signal through the second loudspeaker.
In specific implementation, the projection device may be provided with two speakers and two bases, where a specific positional relationship may be as shown in fig. 1A, the two speakers may be respectively disposed at two ends of a first end surface of the projection device, the two bases may be respectively disposed at two ends of a second end surface of the projection device (e.g., an upward end surface when the projection device is horizontally placed), each of the two bases corresponds to an external speaker, the external speakers are separately disposed from the projection device, and a positional relationship between the external speakers and the projection device may be any one of those shown in fig. 2B; because the first target audio signal and the second target audio signal can respectively comprise a left channel audio signal and a right channel audio signal, when the audio signals are played, the left channel audio signal and the right channel audio signal can be respectively played through different loudspeakers and external sound boxes, and stereo or surround sound can be better presented.
Specifically, the projection device can send the second left channel audio signal and the second right channel audio signal to the two bases respectively, then the two bases respectively send the received audio signals to the corresponding second wireless communication module of the external sound box, for example, after the first base receives the second left channel audio signal, the second base sends the second left channel audio signal to the first external sound box corresponding to the second base, and after the second base receives the second right channel audio signal, the second base sends the second right channel audio signal to the second external sound box corresponding to the second base, so that the second left channel audio signal can be played through one external sound box, and the right channel audio signal can be played through the other external sound box.
The projector may further include two speakers, one of which is configured to play a first right channel audio signal and the other of which is configured to play a first left channel audio signal, and specifically, the speaker configured to play the first right channel audio signal may be disposed at a position relatively close to the right of the projector, and the speaker configured to play the first left channel audio signal may be disposed at a position relatively close to the left of the projector. The audio signals of the left and right sound channels are respectively played through the loudspeakers at two different positions on the projection equipment, so that the stereo experience of a user when the loudspeakers are arranged on the projection equipment to play the audio signals can be improved as much as possible, and the stereo experience or surround experience of the user is further improved by combining with the external loudspeaker box.
For example, referring to fig. 2C, fig. 2C is a schematic diagram illustrating a principle of an audio playing method provided in an embodiment of the present application, after a projection device performs frequency division processing on a first audio signal, the first audio signal may be divided into four audio signals, that is, a first left channel audio signal, a first right channel audio signal, a second left channel audio signal, and a second right channel audio signal, the first left channel audio signal and the first right channel audio signal may be played through two speakers disposed on the projection device respectively, the second left channel audio signal and the second right channel audio signal are sent to two external speakers through a wireless transmission manner, and the second left channel audio signal and the second right channel audio signal are played through the two external speakers respectively.
In this example, the projection device includes a first speaker, a second speaker, a first base, a second base, a first external speaker corresponding to the first base, and a second external speaker corresponding to the second base; the first target audio signal includes: a first left channel audio signal, a first right channel audio signal; the second target audio signal includes: second left channel audio signal, second right channel audio signal, projection equipment plays first left right channel audio signal respectively through first speaker and second speaker, and in sending the second left right channel audio signal to two external audio amplifier respectively through wireless communication module, audio signal through the channel about the external audio amplifier broadcast second of difference respectively, because the locating position of external audio amplifier is unrestricted, play the audio frequency jointly with built-in speaker, be favorable to improving stereo and the surround experience that uses projection equipment.
In one possible example, the first audio signal includes a left channel audio signal and a right channel audio signal, and the frequency dividing processing on the first audio signal includes: separating the left channel audio signal and the right channel audio signal in the first audio signal; performing frequency division processing on the left channel audio signal to obtain a first left channel audio signal and a second left channel audio signal; and performing frequency division processing on the right channel audio signal to obtain the first right channel audio signal and the second right channel audio signal, wherein the frequencies of the second left channel audio signal and the second right channel audio signal are higher than a first preset threshold value.
In specific implementation, the first audio signal includes a left channel audio signal and a right channel audio signal, and when performing frequency division processing, the audio signals of the left and right channels may be separated first, and then the frequency division processing may be performed on the left channel audio signal and the right channel audio signal respectively. The frequency division processing can be specifically completed through a digital electronic frequency division filter arranged in the projection equipment, the projection equipment can be provided with two high-pass filters, the two high-pass filters are used for respectively dividing the frequency of the audio signals with the frequency higher than a first preset threshold value in the left channel and the right channel to obtain a second left channel audio signal and a second right channel audio signal, the audio signals except the second left channel audio signal in the left channel audio signal are first left channel audio signals, and the audio signals except the second right channel audio signal in the right channel audio signal are first right channel audio signals. Or, the projection device further includes two low pass filters, the audio signal with the frequency lower than the second preset threshold can be determined through the low pass filters, a value of the second preset threshold can be set as required, for example, the value can be smaller than or equal to the first preset threshold, and the left and right channel audio signals are processed through the two low pass filters respectively to obtain the first left channel audio signal and the first right channel audio signal.
It can be seen that, in this example, the projection device separates the left channel audio signal and the right channel audio signal in the first audio signal, then performs frequency division processing on the left channel audio signal to obtain a first left channel audio signal and a second left channel audio signal, performs frequency division processing on the right channel audio signal to obtain a first right channel audio signal and a second right channel audio signal, and can perform frequency division processing on the left channel audio signal and the right channel audio signal respectively at the same time, which is beneficial to improving the efficiency of the frequency division processing.
In one possible example, before the transmitting the second target audio signal to the at least one second wireless communication module of the at least one external speaker through the at least one first wireless communication module of the at least one base, respectively, the method further includes: and carrying out sound effect processing on the second target audio signal according to a preset parameter adjusting rule.
In the concrete implementation, the sound effect processing can comprise stereo enhancement or phase surrounding expansion processing and the like, and because the direction positioning of the user to the high-frequency audio signal can be clearly distinguished relative to the low-frequency audio signal, the sound effect processing can be only carried out on the second target audio signal, and the sound effect processing is not carried out on the first target audio signal, so that the processing efficiency of the projection equipment can be improved.
In this example, before the second target audio signal is sent to the at least one second wireless communication module of the at least one external speaker through the at least one first wireless communication module of the at least one base, the projection device further performs sound processing on the second target audio signal according to the preset parameter adjustment rule, and only performs sound processing on the second target audio signal, instead of performing sound processing on the whole first audio signal, which is beneficial to improving the processing efficiency of the projection device.
In one possible example, the performing, according to a preset parameter adjustment rule, sound effect processing on the second target audio signal includes: acquiring type information of audio content corresponding to the second target audio signal; acquiring a target parameter adjustment rule from a preset parameter adjustment rule set according to the type information; and performing sound effect processing on the second target audio signal according to the target parameter adjustment rule.
In specific implementation, for different types of audio contents, the requirements of users may be different, for example, for audio with types such as news highlighting human voice, besides stereo enhancement or phase surround expanding processing, parameters may be adjusted to highlight human voice during audio processing, while for audio with types such as live game, stereo and surround expanding of background sound in game may be emphasized more during audio processing. Therefore, when audio signal is subjected to sound effect processing, the type information of the audio content corresponding to the second target audio signal can be acquired, then the target parameter adjustment rule corresponding to the type information is acquired from the preset parameter adjustment rule set according to the type information, and the sound effect processing is performed on the first target audio signal according to the target parameter adjustment rule.
Therefore, in this example, the projection device first obtains the type information of the audio content corresponding to the second target audio signal, then obtains the target parameter adjustment rule from the preset parameter adjustment rule set according to the type information, and finally performs the sound effect processing on the second target audio signal according to the target parameter adjustment rule, where the target parameter adjustment rule is determined according to the type information of the audio content corresponding to the second target audio signal, which is beneficial to improving the flexibility of the sound effect processing.
In one possible example, after the frequency division processing is performed on the first audio signal, the method further comprises: respectively detecting signal transmission time delay between each base in the at least one base and the corresponding external sound box; setting corresponding playing time delay for each loudspeaker in the at least one loudspeaker and each external sound box in the at least one external sound box respectively according to the signal transmission time delay; the playing the first target audio signal through the at least one speaker comprises: playing the first target audio signal through each loudspeaker according to the corresponding playing delay; the playing the second target audio signal through the at least one external speaker includes: and playing the second target audio signal through each external sound box according to the corresponding playing delay, wherein the second target audio signal carries the playing delay corresponding to each external sound box.
In the specific implementation, because a certain time is required for signal transmission between the external sound box and the base, the time for the audio signal to reach the speaker and the external sound box arranged on the projection device may be different, and if the speaker and the external sound box directly start playing after receiving the audio signal, the audio playing of different speakers or external sound boxes may be asynchronous, so that the signal transmission time delay between each base and the corresponding external sound box can be detected respectively, and then the time for each speaker and the external sound box to play audio is adjusted.
Specifically, the playing delay corresponding to the external sound box can be set
Wherein,
for any loudspeaker or external sound box, the playing time delay T of each loudspeaker d = Tmax (transmission delay of the speaker is defaulted to 0 because the time for signal transmission in the device can be ignored with respect to signal transmission through the wireless communication module), D is the distance between any external speaker and its corresponding base, c is the speed of light, a is the transmission rate influence factor, 0 < a < 1, a can be determined according to the equation
The communication quality parameter (such as signal strength) between the corresponding external sound box and the base is determined, and the larger the value of a is, the better the communication quality between the corresponding external sound box and the base is. T is max The maximum value of the transmission time delay in the transmission time delay of at least one external sound box. After each loudspeaker or external sound box receives the audio signal, the audio signal is played for a time delay T d And time, playing the audio signal.
For example, loudspeaker 1, loudspeaker 2 correspond
0, corresponding to the external sound box 1
1s, a 1, i.e. transmission delay of external sound box 1
1s, corresponding to the external sound box 2
Is 1.5s, a is 0.5, namely the transmission time delay corresponding to the external sound box 2
Is 3s, so T max 3s, loudspeaker 1 and loudspeaker 2 correspond to each otherPlaying delay T d =3s, after receiving the audio signal 3s, the loudspeaker 1 and the loudspeaker 2 play the audio signal, and the playing delay T corresponding to the external sound box 1 d =2s, the external sound box 1 plays the audio signal 2s after receiving the audio signal, and the playing delay T corresponding to the external sound box 2 d And =0s, the external speaker 1 plays the audio signal after receiving the audio signal.
It can be seen that, in this example, the projection device sets a corresponding play delay for each speaker in the at least one speaker and each external speaker in the at least one external speaker according to the signal transmission delay, and then plays the audio signal through the at least one speaker and the at least one external speaker according to the play delay, which is beneficial to improving the synchronization of audio play of each speaker and the external speaker.
Referring to fig. 3A, fig. 3A is a block diagram of functional units of an audio playing apparatus according to an embodiment of the present disclosure, applied to a projection device shown in fig. 1A or fig. 1B, where the audio playing apparatus 30 includes:
an acquisition unit 301 configured to acquire a first audio signal;
a frequency dividing unit 302, configured to perform frequency division processing on the first audio signal to obtain a first target audio signal and a second target audio signal, where a frequency of the second target audio signal is higher than a first preset threshold;
a first playing unit 303, configured to send the first target audio signal to the at least one speaker, and play the first target audio signal through the at least one speaker;
a second playing unit 304, configured to send the second target audio signal to at least one second wireless communication module of the at least one external speaker through at least one first wireless communication module of the at least one base, respectively; and playing the second target audio signal through the at least one external sound box.
In one possible example, the at least one speaker comprises: a first speaker, a second speaker, the at least one base comprising: first base, second base, at least one external audio amplifier includes: the first external sound box corresponds to the first base, and the second external sound box corresponds to the second base; the first target audio signal includes: a first left channel audio signal, a first right channel audio signal; the second target audio signal includes: a second left channel audio signal, a second right channel audio signal.
In one possible example, the second playing unit 304 is specifically configured to: sending the second left channel audio signal to a second wireless communication module of the first external sound box through a first wireless communication module of the first base; sending the second right channel audio signal to a second wireless communication module of the second external speaker through a first wireless communication module of the second base; playing the second left channel audio signal through the first external sound box; and playing the second right channel audio signal through the second external sound box.
In one possible example, the first playing unit 303 is specifically configured to: sending the first left channel audio signal to the first loudspeaker, and playing the first left channel audio signal through the first loudspeaker; and sending the first right channel audio signal to the second loudspeaker, and playing the first right channel audio signal through the second loudspeaker.
In one possible example, the first audio signal includes a left channel audio signal and a right channel audio signal, and in terms of performing frequency division processing on the first audio signal, the frequency dividing unit 302 is specifically configured to: separating the left channel audio signal and the right channel audio signal in the first audio signal; performing frequency division processing on the left channel audio signal to obtain a first left channel audio signal and a second left channel audio signal; and performing frequency division processing on the right channel audio signal to obtain the first right channel audio signal and the second right channel audio signal, wherein the frequencies of the second left channel audio signal and the second right channel audio signal are higher than a first preset threshold value.
In one possible example, the apparatus 30 further comprises: a sound effect processing unit 305, configured to perform sound effect processing on the second target audio signal according to a preset parameter adjustment rule before the second target audio signal is sent to at least one second wireless communication module of the at least one external speaker through the at least one first wireless communication module of the at least one base, respectively.
In one possible example, the sound effect processing unit 305 is specifically configured to: acquiring type information of audio content corresponding to the second target audio signal; acquiring a target parameter adjustment rule from a preset parameter adjustment rule set according to the type information; and performing sound effect processing on the second target audio signal according to the target parameter adjustment rule.
In the case of using an integrated unit, a block diagram of functional units of another audio playing apparatus provided in this embodiment of the present application is shown in fig. 3B. In fig. 3B, the audio playback apparatus includes: a processing module 310 and a communication module 311. The processing module 310 is used for controlling and managing actions of the audio playing apparatus, such as steps performed by the obtaining unit 301, the dividing unit 302, the first playing unit 303, the second playing unit 304, and/or other processes for performing the techniques described herein. The communication module 311 is used to support interaction between the audio playing apparatus and other devices. As shown in fig. 3B, the audio playing device may further include a storage module 312, and the storage module 312 is used for storing program codes and data of the audio playing device.
The Processing module 310 may be a Processor or a controller, and for example, may be a Central Processing Unit (CPU), a general-purpose Processor, a Digital Signal Processor (DSP), an ASIC, an FPGA or other programmable logic device, a transistor logic device, a hardware component, or any combination thereof. Which may implement or execute the various illustrative logical blocks, modules, and circuits described in connection with the disclosure herein. The processor may also be a combination of computing functions, e.g., comprising one or more microprocessors, DSPs, and microprocessors, among others. The communication module 311 may be a transceiver, an RF circuit or a communication interface, etc. The storage module 312 may be a memory.
All relevant contents of each scene related to the method embodiment may be referred to the functional description of the corresponding functional module, and are not described herein again. The audio playing apparatus can perform the steps of the audio playing method shown in fig. 2A.
Embodiments of the present application also provide a computer storage medium, wherein the computer storage medium stores a computer program for electronic data exchange, and the computer program enables a computer to execute part or all of the steps of any one of the methods as described in the above method embodiments.
Embodiments of the present application also provide a computer program product comprising a non-transitory computer readable storage medium storing a computer program operable to cause a computer to perform some or all of the steps of any one of the methods as set out in the above method embodiments. The computer program product may be a software installation package.
It should be noted that, for simplicity of description, the above-mentioned method embodiments are described as a series of acts or combination of acts, but those skilled in the art will recognize that the present application is not limited by the order of acts described, as some steps may occur in other orders or concurrently depending on the application. Further, those skilled in the art should also appreciate that the embodiments described in the specification are preferred embodiments and that the acts and elements referred to are not necessarily required in the present application.
In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
In the embodiments provided in the present application, it should be understood that the disclosed apparatus may be implemented in other manners. For example, the above-described embodiments of the apparatus are merely illustrative, and for example, the above-described division of the units is only one type of division of logical functions, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection of some interfaces, devices or units, and may be an electric or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated unit may be stored in a computer readable memory if it is implemented in the form of a software functional unit and sold or used as a stand-alone product. Based on such understanding, the technical solution of the present application may be substantially implemented or a part of or all or part of the technical solution contributing to the prior art may be embodied in the form of a software product stored in a memory, and including several instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the above-mentioned method of the embodiments of the present application. And the aforementioned memory comprises: a U-disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a removable hard disk, a magnetic or optical disk, and other various media capable of storing program codes.
Those skilled in the art will appreciate that all or part of the steps in the methods of the above embodiments may be implemented by associated hardware instructed by a program, which may be stored in a computer-readable memory, which may include: flash Memory disks, read-Only memories (ROMs), random Access Memories (RAMs), magnetic or optical disks, and the like.
The foregoing embodiments have been described in detail, and specific examples are used herein to explain the principles and implementations of the present application, where the above description of the embodiments is only intended to help understand the method and its core ideas of the present application; meanwhile, for a person skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.
Claims (7)
1. An audio playing method is applied to a projection device, and the projection device includes: the projection equipment comprises at least one loudspeaker and at least one base which are arranged on the projection equipment, and at least one external sound box corresponding to the at least one base, wherein each base in the at least one base is provided with a first wireless communication module, each external sound box in the at least one external sound box is provided with a second wireless communication module, the projection equipment is in communication connection with the second wireless communication module in the external sound box corresponding to the base through the first wireless communication module of each base, each base is provided with at least one suspension device, and the suspension devices are used for suspending the external sound boxes; the method comprises the following steps:
acquiring a first audio signal;
performing frequency division processing on the first audio signal to obtain a first target audio signal and a second target audio signal, wherein the frequency of the second target audio signal is higher than a first preset threshold;
sending the first target audio signal to the at least one loudspeaker, and playing the first target audio signal through the at least one loudspeaker;
respectively sending the second target audio signal to at least one second wireless communication module of the at least one external sound box through at least one first wireless communication module of the at least one base;
playing the second target audio signal through the at least one external sound box;
before the second target audio signal is sent to the at least one second wireless communication module of the at least one external speaker through the at least one first wireless communication module of the at least one base, respectively, the method further includes: performing sound effect processing on the second target audio signal according to a preset parameter adjustment rule, wherein the sound effect processing is not performed on the first target audio signal, and the sound effect processing comprises stereo enhancement processing or phase surrounding expansion processing; after the frequency division processing is performed on the first audio signal, the method further comprises: respectively detecting signal transmission time delay between each base in the at least one base and the corresponding external sound box; setting corresponding playing time delay for each loudspeaker in the at least one loudspeaker and each external sound box in the at least one external sound box respectively according to the signal transmission time delay; the playing the first target audio signal through the at least one speaker comprises: playing the first target audio signal through each loudspeaker according to the corresponding playing delay; the playing the second target audio signal through the at least one external speaker includes: playing the second target audio signal through each external sound box according to the corresponding playing delay of the external sound box, wherein the second target audio signal carries the playing delay corresponding to each external sound box; the playing delay of each loudspeaker is the maximum value of the transmission delay of the at least one external sound box, and the playing delay of each external sound box is determined according to the distance between each external sound box and the base corresponding to each external sound box, the communication quality between each external sound box and the base corresponding to each external sound box, and the maximum value of the transmission delay of the at least one external sound box.
2. The method of claim 1, wherein the at least one speaker comprises: a first speaker, a second speaker, the at least one base comprising: first base, second base, at least one external audio amplifier includes: the first external sound box corresponds to the first base, and the second external sound box corresponds to the second base; the first target audio signal includes: a first left channel audio signal, a first right channel audio signal; the second target audio signal includes: a second left channel audio signal, a second right channel audio signal;
the sending the second target audio signal to at least one second wireless communication module of the at least one external speaker through at least one first wireless communication module of the at least one base, respectively, includes:
sending the second left channel audio signal to a second wireless communication module of the first external sound box through a first wireless communication module of the first base;
sending the second right channel audio signal to a second wireless communication module of the second external speaker through a first wireless communication module of the second base;
the playing the second target audio signal through the at least one external speaker includes:
playing the second left channel audio signal through the first external sound box; playing the second right channel audio signal through the second external sound box;
the sending the first target audio signal to the at least one speaker, and playing the first target audio signal through the at least one speaker, includes:
sending the first left channel audio signal to the first loudspeaker, and playing the first left channel audio signal through the first loudspeaker;
and sending the first right channel audio signal to the second loudspeaker, and playing the first right channel audio signal through the second loudspeaker.
3. The method of claim 2, wherein the first audio signal comprises a left channel audio signal and a right channel audio signal, and wherein the frequency dividing the first audio signal comprises:
separating the left channel audio signal and the right channel audio signal in the first audio signal;
performing frequency division processing on the left channel audio signal to obtain a first left channel audio signal and a second left channel audio signal;
and performing frequency division processing on the right channel audio signal to obtain the first right channel audio signal and the second right channel audio signal, wherein the frequencies of the second left channel audio signal and the second right channel audio signal are higher than the first preset threshold value.
4. The method according to claim 1, wherein the performing sound effect processing on the second target audio signal according to the preset parameter adjustment rule comprises:
acquiring type information of audio content corresponding to the second target audio signal;
acquiring a target parameter adjustment rule from a preset parameter adjustment rule set according to the type information;
and performing sound effect processing on the second target audio signal according to the target parameter adjustment rule.
5. An audio playing apparatus, applied to a projection device, the projection device comprising: the projection equipment comprises at least one loudspeaker and at least one base which are arranged on the projection equipment, and at least one external sound box corresponding to the at least one base, wherein each base in the at least one base is provided with a first wireless communication module, each external sound box in the at least one external sound box is provided with a second wireless communication module, the projection equipment is in communication connection with the second wireless communication module in the external sound box corresponding to the base through the first wireless communication module of each base, each base is provided with a suspension device, and the suspension device is used for suspending the corresponding external sound box; the device comprises:
an acquisition unit configured to acquire a first audio signal;
the frequency dividing unit is used for performing frequency dividing processing on the first audio signal to obtain a first target audio signal and a second target audio signal, wherein the frequency of the second target audio signal is higher than a first preset threshold value;
the first playing unit is used for sending the first target audio signal to the at least one loudspeaker and playing the first target audio signal through the at least one loudspeaker;
the second playing unit is used for sending the second target audio signal to at least one second wireless communication module of the at least one external sound box through at least one first wireless communication module of the at least one base respectively; playing the second target audio signal through the at least one external sound box;
the audio playing device further comprises an audio processing unit, which is used for performing audio processing on the second target audio signal according to a preset parameter adjustment rule before the second target audio signal is sent to at least one second wireless communication module of the at least one external sound box through the at least one first wireless communication module of the at least one base, the first target audio signal is not subjected to the audio processing, and the audio processing comprises stereo enhancement processing or phase surrounding expansion processing;
the apparatus is further configured to: after the frequency division processing is carried out on the first audio signal, respectively detecting the signal transmission time delay between each base in the at least one base and the corresponding external sound box; setting corresponding playing time delay for each loudspeaker in the at least one loudspeaker and each external sound box in the at least one external sound box respectively according to the signal transmission time delay; in the aspect of playing the first target audio signal through the at least one speaker, the first playing unit is specifically configured to: playing the first target audio signal through each loudspeaker according to the corresponding playing delay; in the aspect of playing the second target audio signal through the at least one external speaker, the second playing unit is specifically configured to: playing the second target audio signal through each external sound box according to the corresponding playing delay of the external sound box, wherein the second target audio signal carries the playing delay corresponding to each external sound box; the playing time delay of each loudspeaker is the maximum value of the transmission time delay of the at least one external sound box, and the playing time delay of each external sound box is determined according to the distance between each external sound box and the base corresponding to each external sound box, the communication quality between each external sound box and the base corresponding to each external sound box, and the maximum value of the transmission time delay of the at least one external sound box.
6. A projection device comprising a processor, a memory, and one or more programs stored in the memory and configured to be executed by the processor, the programs including instructions for performing the steps in the method of any of claims 1-4.
7. A computer-readable storage medium, characterized in that a computer program for electronic data exchange is stored, wherein the computer program causes a computer to perform the method according to any one of claims 1-4.
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