CN109525873A - A kind of audio plays synchronous method and device - Google Patents
A kind of audio plays synchronous method and device Download PDFInfo
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- CN109525873A CN109525873A CN201710841152.8A CN201710841152A CN109525873A CN 109525873 A CN109525873 A CN 109525873A CN 201710841152 A CN201710841152 A CN 201710841152A CN 109525873 A CN109525873 A CN 109525873A
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- 230000001360 synchronised effect Effects 0.000 title claims abstract description 25
- 238000011084 recovery Methods 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 15
- 238000012952 Resampling Methods 0.000 description 12
- 238000005070 sampling Methods 0.000 description 11
- 238000012545 processing Methods 0.000 description 9
- 230000005540 biological transmission Effects 0.000 description 8
- 238000004590 computer program Methods 0.000 description 5
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- 230000005236 sound signal Effects 0.000 description 5
- 238000004364 calculation method Methods 0.000 description 3
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/41—Structure of client; Structure of client peripherals
- H04N21/4104—Peripherals receiving signals from specially adapted client devices
- H04N21/4126—The peripheral being portable, e.g. PDAs or mobile phones
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/4302—Content synchronisation processes, e.g. decoder synchronisation
- H04N21/4307—Synchronising the rendering of multiple content streams or additional data on devices, e.g. synchronisation of audio on a mobile phone with the video output on the TV screen
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/436—Interfacing a local distribution network, e.g. communicating with another STB or one or more peripheral devices inside the home
- H04N21/4363—Adapting the video stream to a specific local network, e.g. a Bluetooth® network
- H04N21/43637—Adapting the video stream to a specific local network, e.g. a Bluetooth® network involving a wireless protocol, e.g. Bluetooth, RF or wireless LAN [IEEE 802.11]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/439—Processing of audio elementary streams
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
- Telephone Function (AREA)
Abstract
This application discloses a kind of audios to play synchronous method and device.In the application, in preset time point, situation statistical result is played according to the audio data that the audio data of rear class audio frequency apparatus plays situation statistical result and the first audio frequency apparatus, adjusts the broadcasting sample rate of the rear class audio frequency apparatus and/or first audio frequency apparatus；If playing situation statistical result according to the audio data of the rear class audio frequency apparatus, and the audio data of first audio frequency apparatus plays situation statistical result, after the broadcasting sample rate for adjusting the rear class audio frequency apparatus and/or first audio frequency apparatus, the audio data of the rear class audio frequency apparatus and first audio frequency apparatus, which reaches, to be played simultaneously, the broadcasting sample rate that the audio frequency apparatus that sample rate is adjusted will be then played in the rear class audio frequency apparatus and first audio frequency apparatus, adjusts back the broadcasting sample rate when preset time point.
Description
Technical field
This application involves wireless audio fields more particularly to a kind of audio to play synchronous method and device.
Background technique
It can be information source end and stay of two nights end, such as mobile phone, computer by device definition when carrying out audio data transmission between equipment
It can be information source end equipment (also referred to as audio source device) that earphone, speaker can be stay of two nights end equipment (also referred to as audio frequency apparatus), information source end
Equipment sends stay of two nights end equipment for audio data and plays out.Common situation is that have an information source end and multiple stay of two nights ends logical
Wireless way for transmitting audio data is crossed, the audio data received is played simultaneously in multiple stay of two nights end equipments.
But there are many uncertainties in wireless transmission, cause more device plays that can not synchronize.Such as due to signal interference or
Transmission range is excessive to cause signal decay, is unstable, causes stay of two nights end equipment that can not receive audio data in time, or cause to lose
The situations such as packet.The scene of more device plays difference sound channels is stringent to time requirement, and traditional interactive mode cannot reach more high-precision
Degree, can generate broadcasting deviation.
It can be seen that eliminating the broadcasting deviation generated when more equipment isochronous audios play is to need the technology solved to ask at present
Topic.
Summary of the invention
The embodiment of the present application, which provides a kind of audio and plays synchronous method and device, makes more equipment room audios broadcastings reach synchronous.
The audio that one embodiment of the application provides plays synchronous method, this method comprises:
In preset time point, situation statistical result and the first audio are played according to the audio data of rear class audio frequency apparatus
The audio data of equipment plays situation statistical result, adjusts broadcasting for the rear class audio frequency apparatus and/or first audio frequency apparatus
Put sample rate.
If playing situation statistical result and first audio frequency apparatus according to the audio data of the rear class audio frequency apparatus
Audio data play situation statistical result, the broadcasting for adjusting the rear class audio frequency apparatus and/or first audio frequency apparatus adopts
After sample rate, the audio data of the rear class audio frequency apparatus and first audio frequency apparatus, which reaches, to be played simultaneously, then by the rear class
The broadcasting sample rate that the audio frequency apparatus that sample rate is adjusted is played in audio frequency apparatus and first audio frequency apparatus adjusts back described
Broadcasting sample rate when preset time point.
Optionally, it before executing the above method, also needs to determine first audio frequency apparatus and the rear class audio frequency apparatus
Initial synchronisation play time；First audio frequency apparatus and the rear class audio frequency apparatus are opened in the initial synchronisation play time
Beginning playing audio-fequency data.
The initial synchronisation play time is according between first audio frequency apparatus and the rear class audio frequency apparatus
What one propagation delay time and the second propagation delay time determined；Wherein, first propagation delay time is the propagation delay time of synchronization signal, described
Second propagation delay time is the propagation delay time of audio data.
First audio frequency apparatus and/or the rear class audio frequency apparatus receive audio data by bluetooth.
The audio that one embodiment of the application provides plays synchronous method and device, the device include:
Module is obtained, for obtaining the audio data broadcasting situation statistical result of rear class audio frequency apparatus in preset time point,
And first audio frequency apparatus audio data play situation statistical result.
Module is adjusted, for playing situation statistical result according to the audio data of rear class audio frequency apparatus in preset time point,
And first audio frequency apparatus audio data play situation statistical result, adjust the rear class audio frequency apparatus and/or described first
The broadcasting sample rate of audio frequency apparatus.
Recovery module, if for playing situation statistical result, Yi Jisuo according to the audio data of the rear class audio frequency apparatus
The audio data for stating the first audio frequency apparatus plays situation statistical result, adjusts the rear class audio frequency apparatus and/or first sound
After the broadcasting sample rate of frequency equipment, the rear class audio frequency apparatus and the audio data of first audio frequency apparatus reach synchronize broadcast
It puts, then adopts the broadcasting for playing the audio frequency apparatus that sample rate is adjusted in the rear class audio frequency apparatus and first audio frequency apparatus
Sample rate adjusts back the broadcasting sample rate when preset time point.
Optionally, described device further includes determining module, is specifically used for: determining first audio frequency apparatus and the rear class
The initial synchronisation play time of audio frequency apparatus.First audio frequency apparatus and the rear class audio frequency apparatus are broadcast in the initial synchronisation
Putting the time starts playing audio-fequency data.
The initial synchronisation play time is according between first audio frequency apparatus and the rear class audio frequency apparatus
What one propagation delay time and the second propagation delay time determined；Wherein, first propagation delay time is the propagation delay time of synchronization signal, described
Second propagation delay time is the propagation delay time of audio data.
Optionally, first audio frequency apparatus and/or the rear class audio frequency apparatus receive audio data by bluetooth.
Above-described embodiment of the application is by playing situation according to the audio data of rear class audio frequency apparatus in preset time point
The audio data of statistical result and the first audio frequency apparatus play situation statistical result, adjust the rear class audio frequency apparatus and/or
The broadcasting sample rate of first audio frequency apparatus；And after adjustment plays sample rate, the rear class audio frequency apparatus and described first
The audio data of audio frequency apparatus reaches be played simultaneously after, adopted being played in the rear class audio frequency apparatus and first audio frequency apparatus
The broadcasting sample rate for the audio frequency apparatus that sample rate is adjusted adjusts back the broadcasting sample rate when preset time point.By above-mentioned
Adjustment can guarantee the synchronization that the audio between the first audio frequency apparatus and rear class audio frequency apparatus plays.
Detailed description of the invention
Fig. 1 is the system architecture diagram that the embodiment of the present application is applicable in；
Fig. 2 is the flow diagram that audio provided by the embodiments of the present application plays one of synchronous method；
Fig. 3 is two flow diagram that audio provided by the embodiments of the present application plays synchronous method；
Fig. 4 A plays sample rate using the first audio frequency apparatus as executing subject to be provided by the embodiments of the present application to adjust
Flow diagram；
Fig. 4 B is the process signal provided by the embodiments of the present application that broadcasting sample rate is adjusted using mobile phone as executing subject
Figure；
Fig. 5 is three flow diagram that audio provided by the embodiments of the present application plays synchronous method；
Fig. 6 is the structural schematic diagram that audio provided by the embodiments of the present application plays one of synchronizing device；
Fig. 7 is two structural schematic diagram that audio provided by the embodiments of the present application plays synchronizing device；
Fig. 8 is three structural schematic diagram that audio provided by the embodiments of the present application plays synchronizing device.
Specific embodiment
In the embodiment of the present application, more equipment when wireless transmission can be realized according to the collection and adjustment of more equipment audio datas
The synchronization of broadcasting.
The embodiment of the present application is described in detail with reference to the accompanying drawing.
Fig. 1 schematically illustrates the system architecture diagram that the embodiment of the present application is applicable in, including audio source device with
And audio data can be sent to audio frequency apparatus by one or more audio frequency apparatuses, audio source device, audio frequency apparatus can be to receiving
Frequency domain data play out, and audio data further can be sent to other audio frequency apparatuses.Audio source device can be hand
Mechanical, electrical brain or audio-source can be from storage card (such as SD card).Audio frequency apparatus can be earphone, speaker.Audio-source is set
It is standby directly to be connect with each audio frequency apparatus, audio data is directly issued into each audio frequency apparatus, it can also be with part
Audio frequency apparatus connection, audio data can be transmitted to the next stage equipment of audio frequency apparatus by these audio frequency apparatuses.For example, audio-source
Audio data is sent to audio frequency apparatus 1 by equipment, and audio data is sent to audio frequency apparatus 2 again by audio frequency apparatus 1, and so on.
Different audio frequency apparatuses can play different sound channels, can also play identical sound channel.In the embodiment of the present application, for appointing
One audio frequency apparatus, such as the first audio frequency apparatus send referred to as first audio frequency apparatus of audio data to the first audio frequency apparatus
Prime audio frequency apparatus, the audio frequency apparatus for receiving the audio data that the first audio frequency apparatus is sent are known as the rear class of first audio frequency apparatus
Audio frequency apparatus.
Wherein, wireless connection can be used between audio source device and audio frequency apparatus can also be used wired connection, audio frequency apparatus
Between wireless connection can be used.The wireless connection may include carrying out data transmission or connecting by Bluetooth function or infrared function
It connects.
By be wirelessly connected be bluetooth connection for, the type of attachment between each main body of the embodiment of the present application includes but unlimited
In following several scenes:
Scene one: audio source device is connect with the first audio frequency apparatus and rear class audio frequency apparatus respectively by bluetooth.For example, hand
Machine is audio source device, and audio data is sent to the first audio frequency apparatus by bluetooth by mobile phone, and audio data is passed through indigo plant by mobile phone
Tooth is sent to rear class audio frequency apparatus.If there are multiple rear class audio frequency apparatuses, audio data is sent to by bluetooth by mobile phone each more
Grade audio frequency apparatus.
Scene two: audio source device is connect by bluetooth with the first audio frequency apparatus, and the first audio frequency apparatus is by bluetooth with after
Grade audio frequency apparatus connection.For example, mobile phone is audio source device, audio data is sent to the first audio by bluetooth and set by mobile phone
Standby, audio data is sent to rear class audio frequency apparatus by bluetooth by the first audio frequency apparatus.If having multiple rear class audio frequency apparatuses, with this
Analogize, audio data is sent to the audio frequency apparatus of rear stage by previous stage audio frequency apparatus by bluetooth.
Scene three: audio source device and the first audio frequency apparatus wired connection, the first audio frequency apparatus pass through bluetooth and rear class sound
The connection of frequency equipment.For example, SD card is audio-source, the audio data of the first audio frequency apparatus is from the SD being plugged in this equipment
Audio data is sent to rear class audio frequency apparatus by bluetooth by card, the first audio frequency apparatus.If having multiple rear class audio frequency apparatuses, with this
Analogize, audio data is sent to the audio frequency apparatus of rear stage by previous stage audio frequency apparatus by bluetooth.
Scene four: audio source device and the first audio frequency apparatus wired connection, and using wireless between rear class audio frequency apparatus
Connection.For example, mobile phone is audio source device, mobile phone passes through audio input port (the line in of tone frequency channel wire and the first audio frequency apparatus
Mouthful) connection, audio data is sent to the first audio frequency apparatus, mobile phone or the first audio frequency apparatus by the tone frequency channel wire will by bluetooth
Audio data is sent to rear class audio frequency apparatus.
Audio provided by the embodiments of the present application is described below and plays synchronous method.
It, can be first in order to make the first audio frequency apparatus realize that broadcasting is synchronous with following stage audio frequency apparatus in the embodiment of the present application
Determine the initial synchronisation play time of the first audio frequency apparatus and rear class audio frequency apparatus, the first audio frequency apparatus and rear class audio frequency apparatus can
Start playing audio-fequency data in initial synchronisation play time, so that it is synchronous to reach initial play.
Wherein, can according between the first audio frequency apparatus and rear class audio frequency apparatus the first propagation delay time and second transmission when
Prolong, determines the initial synchronisation play time of the first audio frequency apparatus and rear class audio frequency apparatus.Wherein, first propagation delay time is same
The propagation delay time of signal is walked, second propagation delay time is the propagation delay time of audio data.
When it is implemented, first propagation delay time can be obtained by pre- interactive process, that is, starting to transmit audio data
Before, can the first synchronisation message (wherein do not include audio data) between audio frequency apparatus, to obtain the first propagation delay time.Than
Such as, the first audio frequency apparatus sends synchronization message to rear class audio data, stabs t0 including the sending time of the first audio frequency apparatus；
Rear class audio frequency apparatus receives the message, and the time of reception is denoted as t1, and rear class audio frequency apparatus is synchronized to the return of the first audio frequency apparatus to disappear
Breath stabs t2 including the sending time of rear class audio frequency apparatus,；First audio frequency apparatus receives the synchronization that rear class audio frequency apparatus returns
Message, the time of reception are denoted as t3, then the first audio frequency apparatus can determine the first propagation delay time according to the time difference of t2 and t3.
The determination process of second propagation delay time is similar with the above process, the difference is that the first audio frequency apparatus is with after
The message transmitted between grade audio frequency apparatus is the message comprising audio data.
It, can be true according to the first propagation delay time and the second propagation delay time after determining the first propagation delay time and the second propagation delay time
Determine initial synchronisation play time.
In Audio Signal Processing field, when needing to sample some audio signal, usually according to specifically adopting
Sample rate carries out the acquisition of audio signal.Sample rate can be such as predisposed to 8000, i.e., collect 8000 sound each second
Sound sampling point.When encountering sampling rate conversion, i.e. resampling problem, for example, successful for having already passed through the acquisition of particular sample rate
Audio signal needs that sample rate is increased or reduced, it is therefore desirable to acquire successful audio signal basis in particular sample rate
On re-start sampling.Resampling is that set of number signal processing can be used software approach reality at another set digital signal
Existing, basic ideas can be the interpolation and extraction of digital signal.To when up-sampling, interpolation is needed；When to down-sampling, need to take out
It takes.For non-integer resampling ratio (i.e. to up-sampling: output sampling rate/input sampling rate, to down-sampling: input sampling rate/
Output sampling rate), while needing interpolation and extraction.
The audio that one embodiment of the application provides plays synchronous method, as shown in Fig. 2, this method comprises:
Step 201: obtaining first and receive parameter and rear class reception parameter, the first reception parameter is set according to the first audio
Standby audio data receipt situation counts to obtain, and the rear class receives parameter according to the audio data receipt feelings of rear class audio frequency apparatus
Condition counts to obtain.
Step 202: receiving parameter and the first preset threshold according to described first and/or the rear class receives parameter and rear class
Preset threshold determines that Adjusted Option, the Adjusted Option are used for first audio frequency apparatus and/or the rear class audio frequency apparatus
Broadcasting sample rate be adjusted.
The audio that another embodiment of the application provides plays synchronous method, when the first audio frequency apparatus and audio source device
Wirelessly connect, when the first audio frequency apparatus receives audio data from audio source device, as shown in figure 3, this method comprises:
Step 301: obtaining first and receive parameter, the first reception parameter connects according to the audio data of the first audio frequency apparatus
Situation is received to count to obtain.
Step 302: Adjusted Option is determined according to the first reception parameter and preset threshold, the Adjusted Option for pair
The broadcasting sample rate of first audio frequency apparatus is adjusted.
In order to be more clearly understood that the embodiment of the present application, one of the adjustment flow and method of sample rate is played below with reference to Fig. 4 A
It is described in detail.The process is described as an example using the first audio frequency apparatus as executing subject.Wherein, the first audio frequency apparatus is with after
Grade audio frequency apparatus is respectively two different audio frequency apparatuses.Process shown in following figure 4 A is applicable to above-mentioned various scenes, than
If the first audio frequency apparatus receives audio data from audio-source, rear class audio frequency apparatus is sent to by bluetooth or the first audio is set
Standby and rear class audio frequency apparatus receives the audio data that audio source device is sent by bluetooth respectively.
As shown, this method can include: the first audio frequency apparatus is received according to audio data receipt situation statistics first joins
Number (step 401), and receive the rear class that rear class audio frequency apparatus is counted and fed back according to audio data situation and receive parameter (step
402).Above-mentioned steps 401 and the not stringent timing requirements of step 402.
Wherein, the first reception parameter and the rear class receive the data that parameter is used to characterize the audio data received
Measure and receive the relationship between time span used in the audio data of the data volume.Specifically, first receive parameter and
Rear class receives the data volume that parameter is respectively the audio data received in setting time length；Alternatively, first receive parameter and
Rear class receives the data rate that parameter is respectively the audio data received, and data rate=(data volume)/(receives the data
Time span used in the audio data of amount).
In step 403, according to described first receive parameter and the first preset threshold and/or the rear class receive parameter with
Rear class preset threshold determines Adjusted Option.
Specifically, parameter and the first preset threshold are received according to described first and/or the rear class receives parameter and rear class
Preset threshold determines Adjusted Option, and following three kinds of methods can be used and realize:
Method 1: the comparison result of parameter and first preset threshold is received according to described first, the rear class receives and joins
Several comparison results with the rear class preset threshold determine Adjusted Option.
For example, first receives parameter as N13, it is N23 that rear class, which receives parameter, and the first preset threshold is N100, rear class
Preset threshold is N200；If N13 is less than N100, N23 is less than N200, then the first audio frequency apparatus starts the progress of itself resampling module
Data stretch, and obtain new broadcasting sample rate, rear class audio frequency apparatus is handled according to the same manner；If N13 is greater than N100, N23 is big
In N200, then the first audio frequency apparatus starts the progress data compression of itself resampling module, obtains new broadcasting sample rate, rear class sound
Frequency equipment is handled according to the same manner.If Adjusted Option shows without being adjusted to the broadcasting sample rate of the first audio frequency apparatus
(for example being then not necessarily to be adjusted the broadcasting sample rate of the first audio frequency apparatus as N13=N100), then the first audio frequency apparatus without
Broadcasting sample rate need to be adjusted；If Adjusted Option show without the broadcasting sample rate of rear class audio frequency apparatus is adjusted (such as
Then it is not necessarily to be adjusted the broadcasting sample rate of rear class audio frequency apparatus as N23=N200), then rear class audio frequency apparatus is without adjustment
Play sample rate；If Adjusted Option shows without adjusting to the broadcasting sample rate of the first audio frequency apparatus and rear class audio frequency apparatus
Whole, then the first audio frequency apparatus and rear class audio frequency apparatus are not necessarily to adjustment and play sample rate.
Wherein, N13, N23 are respectively data volume, and N100, N200 are respectively data-quantity threshold or N13, N23 are respectively
Data rate, N100, N200 are respectively data rate threshold.
Method 2: Adjusted Option is determined according to the comparison result of the first reception parameter and first preset threshold.
In the scene three or scene four of type of attachment between each main body of aforementioned the embodiment of the present application, audio source device
When with rear class audio frequency apparatus wired connection, 0 can be set by rear class preset threshold.If first receives parameter as N13, first is pre-
If threshold value is N100, if N13 is less than N100, the first audio frequency apparatus starts itself resampling module and carries out data stretching, obtains
New broadcasting sample rate；If N13 is greater than N100, the first audio frequency apparatus starts itself resampling module and carries out data compression, obtains
New broadcasting sample rate out；If Adjusted Option show without the broadcasting sample rate of the first audio frequency apparatus is adjusted (such as
Then it is not necessarily to be adjusted the broadcasting sample rate of the first audio frequency apparatus as N13=N100), then the first audio frequency apparatus is without adjustment
Play sample rate.
Method 3: Adjusted Option is determined according to the comparison result that the rear class receives parameter and the rear class preset threshold.
In the scene three or scene four of type of attachment between each main body of aforementioned the embodiment of the present application, audio source device
When with the first audio frequency apparatus wired connection, 0 can be set by the first preset threshold.If it is N23 that rear class, which receives parameter, rear class is pre-
If threshold value is N200, if N23 is less than N200, rear class audio frequency apparatus starts itself resampling module and carries out data stretching, obtains
New broadcasting sample rate；If N23 is greater than N200, rear class audio frequency apparatus starts itself resampling module and carries out data compression, obtains
New broadcasting sample rate out；If Adjusted Option show without the broadcasting sample rate of rear class audio frequency apparatus is adjusted (such as
Then it is not necessarily to be adjusted the broadcasting sample rate of rear class audio frequency apparatus as N23=N200), then rear class audio frequency apparatus is without adjustment
Play sample rate.
In above-mentioned three kinds of methods, given threshold is related to the system resource of audio frequency apparatus itself or buffer size.
It, can be according to the Adjusted Option to the broadcasting sample rate of audio data after determining Adjusted Option by step 403
It is adjusted (step 404).Specifically, the broadcasting that the Adjusted Option that the first audio frequency apparatus can be determined according to it adjusts itself is adopted
Adjusted Option is sent to rear class audio frequency apparatus by sample rate, is adopted so that rear class audio frequency apparatus adjusts its broadcasting according to the Adjusted Option
Sample rate.Another situation, the Adjusted Option that rear class audio frequency apparatus can be determined according to it adjust the broadcasting sample rate of itself, will adjust
Perfect square case is sent to the first audio frequency apparatus, so that the first audio frequency apparatus, which adjusts it according to the Adjusted Option, plays sample rate.
It in the Adjusted Option that step 403 is determined may include a broadcasting sample rate as target and play sample rate,
When playing out sample rate adjustment according to Adjusted Option, sample rate can be played according to the same target for including in the Adjusted Option
Play out the adjustment of sample rate.Playing out sample rate adjustment according to target broadcasting sample rate can be used various ways realization,
The embodiment of the present application is without limitation.
Process shown in above-mentioned Fig. 4 A can be executed according to the setting period, so as to keep broadcasting between audio-frequence player device
Put synchronization.
The above process is described using the first audio frequency apparatus as executing subject, can also be with mobile phone in other example
Synchronization process is played out as executing subject Deng the equipment with calculation processing ability and wireless communication ability.Fig. 4 B is with hand
The synchronous process of broadcasting is described for machine.Wherein, the first audio frequency apparatus and rear class audio frequency apparatus are respectively two different audios
Equipment.Process shown in following figure 4 B is applicable to above-mentioned various scenes, for example the first audio frequency apparatus receives audio from audio-source
Data are sent to rear class audio frequency apparatus or the first audio frequency apparatus by bluetooth and rear class audio frequency apparatus are connect by bluetooth respectively
Receive the audio data that audio source device is sent.
The process can include:
Step 410: mobile phone obtains first and receives parameter and rear class reception parameter.Wherein, described first receive parameter can be by
First audio frequency apparatus counts to obtain and be sent to mobile phone according to the audio data receipt situation of the first audio frequency apparatus, and the rear class connects
Receiving parameter can be counted to obtain and be sent to hand by the rear class audio frequency apparatus according to the audio data receipt situation of rear class audio frequency apparatus
Machine.
Wherein, first parameter and rear class are received receive the meaning of parameter and determine method, can with described in previous embodiment,
It is not repeated herein.
Step 411: mobile phone according to described first receive parameter and the first preset threshold and/or the rear class receive parameter with
Rear class preset threshold determines Adjusted Option.Wherein, the determination method of Adjusted Option can no longer weigh herein with described in previous embodiment
It is multiple.
Step 412: the Adjusted Option determined is sent to the first audio frequency apparatus with mobile phone and/or the rear class audio is set
It is standby, so that first audio frequency apparatus and/or rear class audio frequency apparatus adjustment play sample rate.Wherein, the first audio frequency apparatus
Adjusting the method for playing sample rate according to Adjusted Option with rear class audio frequency apparatus can no longer weigh herein with described in previous embodiment
It is multiple.
Process shown in above-mentioned Fig. 4 B can be executed according to the setting period, so as to keep broadcasting between audio-frequence player device
Put synchronization.
It can guarantee the synchronization that the audio between more equipment plays by the method for offer above-mentioned in embodiments herein,
Reduce as the decaying of wireless signal in wireless transmission, it is unstable, be interfered etc. and to shadow caused by audio data transmission
It rings.
In order to better understand method described in the embodiment of the present application, citing is illustrated this method process, and first
The preset threshold of audio frequency apparatus is the first preset threshold, and the preset threshold of rear class audio frequency apparatus is rear class preset threshold.In audio
During broadcasting, if first receives parameter and be greater than the first preset threshold, rear class receives parameter and is greater than rear class preset threshold, then and the
The resampling module that one audio frequency apparatus starts itself compresses audio data, obtains new broadcasting sample rate, new is broadcast
It puts sample rate and is sent to rear class audio frequency apparatus, rear class audio frequency apparatus samples itself according to the sample rate that the first audio frequency apparatus transmits
Rate is adjusted, i.e., the resampling module for equally starting itself compresses audio data.Then the first audio frequency apparatus is with after
Grade audio frequency apparatus plays sample rate by target of the same broadcasting sample rate, plays out, achievees the effect that be played simultaneously.
After use aforesaid way is played out and is synchronized, since attribute of audio frequency apparatus itself is different, if crystal is not homologous,
The not homologous equal reason of clock may again lead to play nonsynchronous phenomenon generation.For this purpose, the embodiment of the present application is broadcast above-mentioned
On the basis of putting synchronous method, following synchronous broadcast method is additionally provided.Synchronous broadcast method presented below can with it is above-mentioned
Synchronous broadcast method shown in Fig. 4 A or Fig. 4 B is used in combination, and also can be used alone.
A kind of adjustment provided by the embodiments of the present application plays the mode of sample rate, and Fig. 5 shows the time slot process of which.
Fig. 5 describes adjustment as executing subject using rear class audio frequency apparatus and plays the process of sample rate, synchronizes to reach audio and play.Its
In, the first audio frequency apparatus and rear class audio frequency apparatus are respectively two different audio frequency apparatuses.Process shown in following figure 5 is applicable
Audio data is received from audio-source in above-mentioned various scenes, such as the first audio frequency apparatus, rear class audio is sent to by bluetooth and is set
Standby or the first audio frequency apparatus and rear class audio frequency apparatus receive the audio data that audio source device is sent by bluetooth respectively.
As shown in figure 5, the process can include:
In preset time point, the audio data that rear class audio frequency apparatus counts the rear class audio frequency apparatus plays situation (step
501a), the audio data that the first audio frequency apparatus counts the first audio frequency apparatus plays situation, and statistical result is sent to rear class sound
Frequency equipment (step 501b).
Wherein, the statistical result that audio data plays situation can pass through the audio sample played in certain time length
The quantity of point characterizes.
Rear class audio frequency apparatus is determined according to the statistical result of rear class audio frequency apparatus and the statistical result of the first audio frequency apparatus
Play sample rate Adjusted Option (step 502).
Rear class audio frequency apparatus adjusts the broadcasting sample rate (step of rear class audio frequency apparatus according to the broadcasting sample rate Adjusted Option
503).In another case, the broadcasting sample rate of rear class audio frequency apparatus and the first audio frequency apparatus requires to be adjusted, then after
Adjusted Option can be sent to the first audio frequency apparatus by grade audio frequency apparatus, so that the first audio frequency apparatus is broadcast according to Adjusted Option adjustment
Put sample rate.
For example, being counted respectively to the first audio frequency apparatus and the respective data playback situation of rear class audio frequency apparatus
Afterwards, the quantity of the audio sample point played in the certain time length of each audio frequency apparatus, rear class audio frequency apparatus are compared such as
Sampled point quantity less than the sampled point quantity of the first audio frequency apparatus, then comparison result shows the first audio frequency apparatus and rear class audio
Equipment is asynchronous, i.e. rear class audio frequency apparatus is slower than the first audio frequency apparatus.Then rear class audio frequency apparatus is set by adjusting itself after calculating
Standby sample rate (this sample rate is greater than the first audio frequency apparatus sample rate), finally makes certain moment itself sampled point quantity and the first sound
Frequency equipment is consistent.
If after carrying out above-mentioned broadcasting sample rate adjustment, the audio number of the rear class audio frequency apparatus and first audio frequency apparatus
It is played simultaneously according to reaching, then the broadcasting sample rate that will be adjusted in rear class audio frequency apparatus and first audio frequency apparatus adjusts back
Broadcasting sample rate (step 504) when the preset time point.For example, if only having adjusted rear class audio frequency apparatus in step 503
Broadcasting sample rate, then sample rate can be played to it in step 504 and restored；If only having adjusted in step 503
The broadcasting sample rate of one audio frequency apparatus, then in step 504 can broadcasting sample rate to the first audio-frequence player device carry out it is extensive
It is multiple；If having adjusted the broadcasting sample rate of rear class audio frequency apparatus and the first audio frequency apparatus in step 403, in step 404 may be used
Restored with the broadcasting sample rate to the two audio frequency apparatuses.
Above-mentioned process shown in fig. 5 can be executed according to the setting period, to keep the broadcasting between different audio frequency apparatuses synchronous.
The above process is described using rear class audio frequency apparatus as executing subject, can also be with mobile phone in other example
Synchronization process is played out as executing subject Deng the equipment with calculation processing ability and wireless communication ability.If with hand
Machine is as executing subject, then in preset time point, mobile phone plays situation statistical result according to the audio data of rear class audio frequency apparatus,
And first the audio data of audio frequency apparatus play situation statistical result, adjust rear class audio frequency apparatus and/or first audio
The broadcasting sample rate of equipment.If playing situation statistical result and described the according to the audio data of the rear class audio frequency apparatus
The audio data of one audio frequency apparatus plays situation statistical result, adjusts the rear class audio frequency apparatus and/or first audio is set
After standby broadcasting sample rate, the audio data of the rear class audio frequency apparatus and first audio frequency apparatus, which reaches, to be played simultaneously, then
The broadcasting sample rate for the audio frequency apparatus that sample rate is adjusted will be played in the rear class audio frequency apparatus and first audio frequency apparatus,
Adjust back the broadcasting sample rate when preset time point.
Wherein, audio data can be played situation statistical result and be sent to hand by the first audio frequency apparatus and rear class audio frequency apparatus
Machine.Mobile phone can indicate that the first audio frequency apparatus and/or rear class audio frequency apparatus play out the adjustment or recovery of sample rate.
Based on the same technical idea, the embodiment of the present application also provides a kind of audio broadcasting synchronizing device, as shown in fig. 6,
Above method embodiment can be performed in the device.The device includes:
Module 601 is obtained, receiving parameter and rear class for obtaining first receives parameter, and described first receives parameter according to the
The audio data receipt situation of one audio frequency apparatus counts to obtain, and the rear class receives parameter according to the audio number of rear class audio frequency apparatus
It counts to obtain according to reception condition；
Determining module 602, for receiving parameter according to described first, the rear class receives parameter and preset threshold is determined and adjusted
Perfect square case, the Adjusted Option be used for the broadcasting sample rate of first audio frequency apparatus and/or the rear class audio frequency apparatus into
Row adjustment.
The determining module 602 is specifically used for: receiving parameter compared with first preset threshold according to described first
As a result, the rear class receives parameter and determines Adjusted Option；Or
The comparison result of parameter and first preset threshold is received according to described first, the rear class receives parameter and institute
The comparison result for stating rear class preset threshold determines Adjusted Option；Or
The comparison result of parameter and the rear class preset threshold is received according to the rear class, the first reception parameter determines
Adjusted Option.
Described device further include: adjustment module 603, for according to the same resampling rate in the Adjusted Option to described
The broadcasting sample rate of first audio frequency apparatus and/or the rear class audio frequency apparatus is adjusted.
The adjustment module 603 is also used to: being adopted treating playing audio-fequency data according to broadcasting sample rate adjusted
After being played after sample, execute:
In preset time point, situation statistical result and described is played according to the audio data of the rear class audio frequency apparatus
The audio data of first audio frequency apparatus plays situation statistical result, adjusts the rear class audio frequency apparatus and/or first audio
The broadcasting sample rate of equipment；
If playing situation statistical result and first audio frequency apparatus according to the audio data of the rear class audio frequency apparatus
Audio data play situation statistical result, the broadcasting for adjusting the rear class audio frequency apparatus and/or first audio frequency apparatus adopts
After sample rate, the audio data of the rear class audio frequency apparatus and first audio frequency apparatus, which reaches, to be played simultaneously, then by the rear class
The broadcasting sample rate that the audio frequency apparatus that sample rate is adjusted is played in audio frequency apparatus and first audio frequency apparatus adjusts back described
Broadcasting sample rate when preset time point.
First audio frequency apparatus and/or the rear class audio frequency apparatus receive audio data by bluetooth.
Based on the same technical idea, the embodiment of the present application also provides a kind of audio broadcasting synchronizing device, as shown in fig. 7,
Above method embodiment can be performed in the device.The device includes:
Module 701 is obtained, receives parameter for obtaining first, described first receives parameter according to the sound of the first audio frequency apparatus
Frequency counts to obtain according to reception condition；Wherein, first audio frequency apparatus is wirelessly connect with audio source device, described
First audio frequency apparatus receives audio data from the audio source device.
Determining module 702, for determining Adjusted Option, the adjustment side according to the first reception parameter and preset threshold
Case is for being adjusted the broadcasting sample rate of first audio frequency apparatus.
Based on the same technical idea, the embodiment of the present application also provides a kind of audio broadcasting synchronizing device, as shown in figure 8,
Above method embodiment can be performed in the device.The device includes:
Module 801 is obtained, in preset time point, the audio data for obtaining rear class audio frequency apparatus to play situation statistics knot
The audio data of fruit and the first audio frequency apparatus plays situation statistical result.
Module 802 is adjusted, for playing situation statistics knot according to the audio data of rear class audio frequency apparatus in preset time point
The audio data of fruit and the first audio frequency apparatus plays situation statistical result, adjusts the rear class audio frequency apparatus and/or described the
The broadcasting sample rate of one audio frequency apparatus.
Recovery module 803, if for playing situation statistical result according to the audio data of the rear class audio frequency apparatus, and
The audio data of first audio frequency apparatus plays situation statistical result, adjusts the rear class audio frequency apparatus and/or described first
After the broadcasting sample rate of audio frequency apparatus, the rear class audio frequency apparatus and the audio data of first audio frequency apparatus reach synchronize broadcast
It puts, then adopts the broadcasting for playing the audio frequency apparatus that sample rate is adjusted in the rear class audio frequency apparatus and first audio frequency apparatus
Sample rate adjusts back the broadcasting sample rate when preset time point.
The application is referring to method, the process of equipment (system) and computer program product according to the embodiment of the present application
Figure and/or block diagram describe.It should be understood that every one stream in flowchart and/or the block diagram can be realized by computer program instructions
The combination of process and/or box in journey and/or box and flowchart and/or the block diagram.It can provide these computer programs
Instruct the processor of general purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices to produce
A raw machine, so that being generated by the instruction that computer or the processor of other programmable data processing devices execute for real
The device for the function of being specified in present one or more flows of the flowchart and/or one or more blocks of the block diagram.
These computer program instructions, which may also be stored in, is able to guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works, so that it includes referring to that instruction stored in the computer readable memory, which generates,
Enable the manufacture of device, the command device realize in one box of one or more flows of the flowchart and/or block diagram or
The function of being specified in multiple boxes.
These computer program instructions also can be loaded onto a computer or other programmable data processing device, so that counting
Series of operation steps are executed on calculation machine or other programmable devices to generate computer implemented processing, thus in computer or
The instruction executed on other programmable devices is provided for realizing in one or more flows of the flowchart and/or block diagram one
The step of function of being specified in a box or multiple boxes.
Although the preferred embodiment of the application has been described, it is created once a person skilled in the art knows basic
Property concept, then additional changes and modifications may be made to these embodiments.So it includes excellent that the following claims are intended to be interpreted as
It selects embodiment and falls into all change and modification of the application range.
Obviously, those skilled in the art can carry out various modification and variations without departing from the essence of the application to the application
Mind and range.In this way, if these modifications and variations of the application belong to the range of the claim of this application and its equivalent technologies
Within, then the application is also intended to include these modifications and variations.
Claims (8)
1. a kind of audio plays synchronous method characterized by comprising
In preset time point, situation statistical result and the first audio frequency apparatus are played according to the audio data of rear class audio frequency apparatus
Audio data play situation statistical result, the broadcasting for adjusting the rear class audio frequency apparatus and/or first audio frequency apparatus adopts
Sample rate；
If playing the sound of situation statistical result and first audio frequency apparatus according to the audio data of the rear class audio frequency apparatus
Frequency data playback situation statistical result, adjusts the broadcasting sample rate of the rear class audio frequency apparatus and/or first audio frequency apparatus
Afterwards, the audio data of the rear class audio frequency apparatus and first audio frequency apparatus, which reaches, is played simultaneously, then by the rear class audio
The broadcasting sample rate that the audio frequency apparatus that sample rate is adjusted is played in equipment and first audio frequency apparatus adjusts back described default
Broadcasting sample rate when time point.
2. the method as described in claim 1, which is characterized in that further include: determine first audio frequency apparatus and the rear class
The initial synchronisation play time of audio frequency apparatus；
First audio frequency apparatus and the rear class audio frequency apparatus start playing audio-fequency data in the initial synchronisation play time.
3. method according to claim 2, which is characterized in that the initial synchronisation play time is according to first audio
What the first propagation delay time and the second propagation delay time between equipment and the rear class audio frequency apparatus determined；Wherein, it described first passes
Defeated time delay is the propagation delay time of synchronization signal, and second propagation delay time is the propagation delay time of audio data.
4. method as claimed in any one of claims 1-3, which is characterized in that first audio frequency apparatus and/or it is described after
Grade audio frequency apparatus receives audio data by bluetooth.
5. a kind of audio plays synchronizing device characterized by comprising
Module is obtained, the audio data for being used to obtain rear class audio frequency apparatus in preset time point plays situation statistical result, and
The audio data of first audio frequency apparatus plays situation statistical result；
Module is adjusted, is used in preset time point, situation statistical result is played according to the audio data of rear class audio frequency apparatus, and
The audio data of first audio frequency apparatus plays situation statistical result, adjusts the rear class audio frequency apparatus and/or first audio
The broadcasting sample rate of equipment；
Recovery module, if for playing situation statistical result and described the according to the audio data of the rear class audio frequency apparatus
The audio data of one audio frequency apparatus plays situation statistical result, adjusts the rear class audio frequency apparatus and/or first audio is set
After standby broadcasting sample rate, the audio data of the rear class audio frequency apparatus and first audio frequency apparatus, which reaches, to be played simultaneously, then
The broadcasting sample rate for the audio frequency apparatus that sample rate is adjusted will be played in the rear class audio frequency apparatus and first audio frequency apparatus,
Adjust back the broadcasting sample rate when preset time point.
6. device as described in claim 5, which is characterized in that further include determining module, the determining module is specifically used for:
Determine the initial synchronisation play time of first audio frequency apparatus and the rear class audio frequency apparatus；
First audio frequency apparatus and the rear class audio frequency apparatus start playing audio-fequency data in the initial synchronisation play time.
7. device as claimed in claim 6, which is characterized in that the initial synchronisation play time is according to first audio
What the first propagation delay time and the second propagation delay time between equipment and the rear class audio frequency apparatus determined；Wherein, it described first passes
Defeated time delay is the propagation delay time of synchronization signal, and second propagation delay time is the propagation delay time of audio data.
8. the device as described in any one of claim 5-7, which is characterized in that first audio frequency apparatus and/or it is described after
Grade audio frequency apparatus receives audio data by bluetooth.
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