CN104320843A - Audio synchronization method for Bluetooth sounding devices - Google Patents
Audio synchronization method for Bluetooth sounding devices Download PDFInfo
- Publication number
- CN104320843A CN104320843A CN201410524717.6A CN201410524717A CN104320843A CN 104320843 A CN104320843 A CN 104320843A CN 201410524717 A CN201410524717 A CN 201410524717A CN 104320843 A CN104320843 A CN 104320843A
- Authority
- CN
- China
- Prior art keywords
- producing device
- bluetooth sound
- bluetooth
- sample
- sample size
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 56
- 230000001360 synchronised effect Effects 0.000 claims abstract description 29
- 238000006243 chemical reaction Methods 0.000 claims description 87
- 230000005540 biological transmission Effects 0.000 claims description 17
- 230000005236 sound signal Effects 0.000 claims description 7
- 238000009434 installation Methods 0.000 description 9
- 238000009825 accumulation Methods 0.000 description 8
- 230000008859 change Effects 0.000 description 8
- 230000008569 process Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 230000004044 response Effects 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
- G10L19/00—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
- G10L19/04—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis using predictive techniques
- G10L19/16—Vocoder architecture
- G10L19/18—Vocoders using multiple modes
- G10L19/24—Variable rate codecs, e.g. for generating different qualities using a scalable representation such as hierarchical encoding or layered encoding
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
Landscapes
- Engineering & Computer Science (AREA)
- Quality & Reliability (AREA)
- Computational Linguistics (AREA)
- Signal Processing (AREA)
- Health & Medical Sciences (AREA)
- Audiology, Speech & Language Pathology (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Mobile Radio Communication Systems (AREA)
- Telephone Function (AREA)
Abstract
The invention discloses an audio synchronization method for Bluetooth sounding devices. The Bluetooth sounding devices comprise a first Bluetooth sounding device and a second Bluetooth sounding device; and the first Bluetooth sounding device and the second Bluetooth sounding device are connected and transmit digital audio packages via Bluetooth. The method of the invention comprises the following steps of acquiring the number of samples converted at the first time point by the first Bluetooth sounding device and the second Bluetooth sounding device, and adjusting the speed of samples converted by the second Bluetooth sounding device according to the number of samples converted by the first Bluetooth sounding device and the second Bluetooth sounding device. According to the audio synchronization method, the number of samples converted by multiple Bluetooth sounding devices can be detected and adjusted regularly, and the multiple Bluetooth sounding devices can maintain in a synchronized state at any time.
Description
Technical field
The present invention relates to a kind of audio synchronization method of bluetooth sound-producing device, can regularly detect and adjust multiple bluetooth sound-producing device, make multiple bluetooth sound-producing device remain on synchronous state at any time.
Background technology
Bluetooth (bluetooth) is a kind of common Radio Transmission Technology, is generally used in short-range transfer of data.When carrying out transfer of data by bluetooth, one of them of two electronic installations can be defined as main device (Master), another electronic installation is then defined as slave unit (Slave).Can match between main device and slave unit, and framework goes out personal area network (personal area networks), makes winner's device and slave unit carry out the transmission of data by wireless mode.Generally speaking, main device can be mobile phone, and slave unit is then bluetooth earphone or loudspeaker, and wherein digital audio data is sent to bluetooth earphone by bluetooth or loudspeaker are play by mobile phone, and digital audio data also can be sent to mobile phone by bluetooth earphone.
Summary of the invention
Object of the present invention is mainly the audio synchronization method providing a kind of bluetooth sound-producing device, can regularly detect and adjust multiple bluetooth sound-producing device, makes multiple bluetooth sound-producing device remain on synchronous state at any time.
The present invention carries a kind of audio synchronization method of bluetooth sound-producing device, and digital audio package is sent to other bluetooth sound-producing device by a bluetooth sound-producing device wherein in multiple bluetooth sound-producing device by bluetooth.Capture and compare the sample size (sample count) of each bluetooth sound-producing device conversion at one time, whether synchronous to learn between each bluetooth sound-producing device.
The present invention carries a kind of audio synchronization method of bluetooth sound-producing device, and digital audio package is sent to other bluetooth sound-producing device by a bluetooth sound-producing device wherein in multiple bluetooth sound-producing device by bluetooth.Capture and compare the sample size (sample count) of each bluetooth sound-producing device conversion at one time, and the speed of at least one bluetooth sound-producing device conversion sample is adjusted according to each sample size, the speed of the bluetooth sound-producing device conversion sample of slave unit is changed in such as adjustment, to make each bluetooth sound-producing device synchronous.
The present invention carries a kind of audio synchronization method of bluetooth sound-producing device, and digital audio package is sent to other bluetooth sound-producing device by a bluetooth sound-producing device wherein in multiple bluetooth sound-producing device by bluetooth.Mainly on multiple digital audio package, increase corresponding sequence number, and represent the sample size of the accumulation before of each package with this sequence number, to avoid making a mistake in the process of acquisition sample size.
In order to reach above object, the invention provides a kind of audio synchronization method of bluetooth sound-producing device, wherein bluetooth sound-producing device comprises the first bluetooth sound-producing device and the second bluetooth sound-producing device, first bluetooth sound-producing device and the second bluetooth sound-producing device are undertaken connecting and transmission of digital audio frequency package by bluetooth, and comprise the following steps: capture the first bluetooth sound-producing device and the second bluetooth sound-producing device sample size in very first time point conversion; And according to the sample size that the first bluetooth sound-producing device and the second bluetooth sound-producing device are changed, adjust the speed of the second bluetooth sound-producing device conversion sample.
The invention provides the audio synchronization method of another kind of bluetooth sound-producing device, wherein bluetooth sound-producing device comprises the first bluetooth sound-producing device and the second bluetooth sound-producing device, first bluetooth sound-producing device and the second bluetooth sound-producing device are undertaken connecting and transmission of digital audio frequency package by bluetooth, and comprise the following steps: capture the sample size of the first bluetooth sound-producing device in very first time point conversion, and produce the first sample size; To put the very first time and the first sample size is sent to the second bluetooth sound-producing device by the first bluetooth sound-producing device; Capture the sample size of the second bluetooth sound-producing device in very first time point conversion, and produce the second sample size; And according to the first sample size and the second sample size, adjust the speed of the second bluetooth sound-producing device conversion sample.
In audio synchronization method one embodiment of the present invention, comprise the following steps: compare the first bluetooth sound-producing device and the second bluetooth sound-producing device sample size in very first time point conversion.
In audio synchronization method one embodiment of the present invention, wherein the first bluetooth sound-producing device is main device, and the second bluetooth sound-producing device is then slave unit.
In audio synchronization method one embodiment of the present invention, comprise following methods: capture the sample size that the first bluetooth sound-producing device and the second bluetooth sound-producing device put conversion at one time.
In audio synchronization method one embodiment of the present invention, comprise the following steps: the clock pulse of synchronous first bluetooth sound-producing device and the second bluetooth sound-producing device.
In audio synchronization method one embodiment of the present invention, comprise the following steps: the first bluetooth sound-producing device and the second bluetooth sound-producing device match, make the first bluetooth sound-producing device and the second bluetooth sound-producing device use identical clock pulse.
In audio synchronization method one embodiment of the present invention, comprise the following steps: the first bluetooth sound-producing device and the second bluetooth sound-producing device are by clock pulse definition very first time point.
In audio synchronization method one embodiment of the present invention, wherein the first bluetooth sound-producing device and the second bluetooth sound-producing device comprise: buffer cell, temporary digital audio package; Decoding unit, connects buffer cell, and the sample of decoded digital audio frequency package; Sample conversion rate adjustment unit, connects decoding unit, and adjusts sample rate; And D/A conversion unit, connect sample conversion rate adjustment unit, and sample conversion is become simulated audio signal.
In audio synchronization method one embodiment of the present invention, comprise the following steps: the sample size of D/A conversion unit in very first time point conversion capturing the first bluetooth sound-producing device and the second bluetooth sound-producing device; And according to the sample size that the first bluetooth sound-producing device and the second bluetooth sound-producing device are changed, adjust the sample rate of the sample conversion rate adjustment unit of the second bluetooth sound-producing device.
In audio synchronization method one embodiment of the present invention, comprise the following steps: the sample size of D/A conversion unit in very first time point conversion comparing the first bluetooth sound-producing device and the second bluetooth sound-producing device.
In audio synchronization method one embodiment of the present invention, comprise several digital audio packages, each digital audio package all comprises corresponding sequence number, the sample size of each sequence number respectively in order to accumulate before indicating each digital audio package.
Describe the present invention below in conjunction with the drawings and specific embodiments, but not as a limitation of the invention.
Accompanying drawing explanation
Fig. 1 is the organigram of blue tooth transmission system one embodiment of the present invention;
Fig. 2 is the block diagram of bluetooth sound-producing device one embodiment of the present invention;
Fig. 3 is the flow chart of steps of audio synchronization method one embodiment of bluetooth sound-producing device of the present invention;
Fig. 4 is the flow chart of steps of the another embodiment of audio synchronization method of bluetooth sound-producing device of the present invention;
Fig. 5 is the schematic diagram of digital audio package one embodiment of the present invention;
Fig. 6 is the schematic diagram of the another embodiment of digital audio package of the present invention;
Fig. 7 is the schematic diagram of the another embodiment of digital audio package of the present invention.
Wherein, Reference numeral
10 blue tooth transmission system 11 electronic installations
12 digital audio package 121 first packages
The blank package of 123 second package 124
125 the 3rd package 13 bluetooth sound-producing devices
131 first bluetooth sound-producing device 1311 buffer cells
1313 decoding unit 1315 sample conversion rate adjustment unit
1317 D/A conversion unit 133 second bluetooth sound-producing devices
1331 buffer cell 1333 decoding units
1335 sample conversion rate adjustment unit 1337 D/A conversion units
14 simulated audio signal 161 first sequence numbers
163 second sequence number 165 the 3rd sequence numbers
Embodiment
Below in conjunction with accompanying drawing, structural principle of the present invention and operation principle are described in detail:
In the middle of specification and follow-up right, coupling or connecting a word at this is comprise directly any and be indirectly electrically connected means.Therefore, if describe a first device in literary composition to be coupled to one second device, then represent first device and can directly be electrically connected in the second device, or be indirectly electrically connected to the second device by other devices or connection means.
Fig. 1 is the organigram of blue tooth transmission system 10 1 embodiment of the present invention, and Fig. 2 is the block diagram of bluetooth sound-producing device 13 1 embodiment of the present invention.In an embodiment of the present invention, blue tooth transmission system 10 mainly comprises an electronic installation 11 and multiple bluetooth sound-producing device 13, wherein electronic installation 11 non-essential structure.Convenience during in order to illustrate, bluetooth sound-producing device 13 of the present invention comprises one first bluetooth sound-producing device 131 and one second bluetooth sound-producing device 133, and wherein the first bluetooth sound-producing device 131 and the second bluetooth sound-producing device 133 carry out connection and transmission of digital audio frequency package 12 by bluetooth.But in different embodiments, the quantity of bluetooth sound-producing device 13 also can be two or more, and same by audio synchronization method of the present invention, synchronous multiple bluetooth sound-producing device 13.
In an embodiment of the present invention, the first bluetooth sound-producing device 131 and the second bluetooth sound-producing device 133 can form a sound system, and wherein the first bluetooth sound-producing device 131 can be L channel, and the second bluetooth sound-producing device 133 can be R channel.With regard to the sound system of general dual track, usually need to make the first bluetooth sound-producing device 131 and the second bluetooth sound-producing device 133 as far as possible synchronous, sound system framework just can be made to go out correct sound channel, and reach good audio visual effect.If when the quantity of bluetooth sound-producing device 13 is two or more, will carry out synchronous between each bluetooth sound-producing device 13 equally, ability framework goes out the sound system of multichannel.
In embodiments of the present invention, digital audio package 12 is be stored in electronic installation 11 originally, digital audio package 12 is sent to the first bluetooth sound-producing device 131 by bluetooth by electronic installation 11, the digital audio package 12 of reception, after receiving digital audio package 12, can be sent to the second bluetooth sound-producing device 133 by bluetooth by the first bluetooth sound-producing device 131.Certain electronic installation 11 is necessary component of the present invention not, the present invention is mainly used in multiple bluetooth sound-producing device 13, and in order to the audio frequency of synchronous multiple bluetooth sound-producing device 13, such as digital audio package 12 can be stored in the first bluetooth sound-producing device 131, digital audio package 12 is sent to the second bluetooth sound-producing device 133 by bluetooth by the first bluetooth sound-producing device 131.
In an embodiment of the present invention, the first bluetooth sound-producing device 131 can be defined by main device (Master), and the second bluetooth sound-producing device 133 is then defined as slave unit (Slave).Before digital audio package 12 is sent to the second bluetooth sound-producing device 133 by bluetooth by the first bluetooth sound-producing device 131, the bluetooth must first set up between the first bluetooth sound-producing device 131 and the second bluetooth sound-producing device 133 connects.
First the pairing (pair) of the first bluetooth sound-producing device 131 and the second bluetooth sound-producing device 133 will be carried out, with the clock pulse (clock) of synchronous first bluetooth sound-producing device 131 and the second bluetooth sound-producing device 133, and both are made to use identical clock pulse.In the process of pairing, first bluetooth sound-producing device 131 can continue to send inquiry package, after the second bluetooth sound-producing device 133 of adjacent domain receives inquiry package, such as near zone is the radio transmission range of bluetooth, second bluetooth sound-producing device 133 can send response package to the first bluetooth sound-producing device 131, wherein comprise the bluetooth device address (BD_ADDR, bluetooth address) of the second bluetooth sound-producing device 133 in response packet.
After first bluetooth sound-producing device 131 receives the response package that the second bluetooth sound-producing device 133 transmits, can send according to the bluetooth device address of response packet and connect package (page).Bluetooth device address is included, the connection package therefore only having the second bluetooth sound-producing device 133 can receive the first bluetooth sound-producing device 131 to transmit owing to connecting in package.
After the second bluetooth sound-producing device 133 receives connection package, just the clock pulse of the first bluetooth sound-producing device 131 can be learnt by the content connecting package, and make the second bluetooth sound-producing device 133 can be synchronous with the clock pulse of the first bluetooth sound-producing device 131, such as make the first bluetooth sound-producing device 131 and the second bluetooth sound-producing device 133 use identical clock pulse.The bluetooth that just can be completed between the first bluetooth sound-producing device 131 with the second bluetooth sound-producing device 133 by above-mentioned step is connected, and makes between the first bluetooth sound-producing device 131 and the second bluetooth sound-producing device 133 by Bluetooth transmission digital audio package 12.
Digital audio package 12 is first sent to the first bluetooth sound-producing device 131 via electronic installation 11, then the digital audio package 12 of reception just can be sent to the second bluetooth sound-producing device 133 by the first bluetooth sound-producing device 131, and therefore to receive time of digital audio package 12 not identical for the first bluetooth sound-producing device 131 and the second bluetooth sound-producing device 133.First bluetooth sound-producing device 131 is after receiving digital audio package 12, can't change and audio plays package 12 at once, but after determining that the second bluetooth sound-producing device 133 receives digital audio package 12 equally, first bluetooth sound-producing device 131 and the second bluetooth sound-producing device 133 just can play sound signal simultaneously, synchronous in the initial stage with the voice signal making the first bluetooth sound-producing device 131 and the second bluetooth sound-producing device 133 play.
As shown in Figure 2, first bluetooth sound-producing device 131 and the second bluetooth sound-producing device 133 comprise buffer cell (buffer) 1311/1331, decoding unit (decode) 1313/1333, sample conversion rate adjustment unit (sample rate conversion) 1315/1335 and D/A conversion unit (DAC) 1317/1337, wherein decoding unit 1313/1333 connects buffer cell 1311/1331, and sample conversion rate adjustment unit 1315/1335 then connects decoding unit 1313/1333 and D/A conversion unit 1317/1337.
Certainly the structure that the first bluetooth sound-producing device 131 and the second bluetooth sound-producing device 133 may also need Bluetooth transmission interface, loudspeaker, amplifying unit, microprocessor and/or supply power supply etc. different when practical application, just can make the first bluetooth sound-producing device 131 and the second bluetooth sound-producing device 133 operate.But the content that above-mentioned structure and this case mainly illustrate has nothing to do, and disclose in the prior art, therefore do not showed in fig. 2, be beneficial to explanation.
Buffer cell 1311/1331 described in the embodiment of the present invention can in order to temporary digital audio package 12; Decoding unit 1313/1333 can in order to the sample of decoded digital audio frequency package 12; Sample conversion rate adjustment unit 1315/1335 can in order to adjust sample rate; And D/A conversion unit 1317/1337 can in order to become simulated audio signal 14 by the sample conversion of digital audio package 12.
Digital audio package 12, after receiving digital audio package 12, first can be temporarily stored in buffer cell 1311, and by bluetooth, digital audio package 12 is sent to the second bluetooth sound-producing device 133 by the first bluetooth sound-producing device 131.
Digital audio package 12, after receiving the digital audio package 12 that the first bluetooth sound-producing device 131 transmits, can be temporarily stored in buffer cell 1331 by the second bluetooth sound-producing device 133 equally.After the first bluetooth sound-producing device 131 and the second bluetooth sound-producing device 133 have received digital audio package 12 all, both just can process simultaneously and play digital audio package 12.Such as the first bluetooth sound-producing device 131 and the second bluetooth sound-producing device 133 have identical clock pulse, and therefore the first bluetooth sound-producing device 131 and the second bluetooth sound-producing device 133 can be set in same clock pulse point process digital audio package 12.
Digital audio package 12 comprises multiple sample (sample), and the sample of digital audio package 12 can be sent to decoding unit 1313/1333 and carry out decoding by the first bluetooth sound-producing device 131 and the second bluetooth sound-producing device 133.Then by sample conversion rate adjustment unit 1315/1335, the sample after decoding is sent to D/A conversion unit 1317/1337, and become analog signal by the sample conversion of D/A conversion unit 1317/1337 sample numeral, make the first bluetooth sound-producing device 131 and the second bluetooth sound-producing device 133 synchronously play simulated audio signal 14.
But after broadcasting after a while, the speed difference of digital audio package 12 may be processed because of the first bluetooth sound-producing device 131 and the second bluetooth sound-producing device 133, and cause the first bluetooth sound-producing device 131 and the second bluetooth sound-producing device 133 to play simulated audio signal 14 producing nonsynchronous situation, and have impact on the quality of broadcasting of the first bluetooth sound-producing device 131 and the second bluetooth sound-producing device 133.
Fig. 3 is the flow chart of steps of audio synchronization method one embodiment of bluetooth sound-producing device of the present invention, please refer to Fig. 1 and Fig. 2, in order to solve the problem producing asynchronous broadcasting between multiple phonation unit 13, present invention further proposes a kind of audio synchronization method.First each phonation unit 13 is captured putting the sample size (sample count) of conversion at the same time, as shown in step 21.For the first bluetooth sound-producing device sound unit 131 and the second bluetooth sound-producing device sound unit 133, the sample size that fechtable first bluetooth sound-producing device 131 and the second bluetooth sound-producing device 133 are changed at very first time point, the D/A conversion unit 1317/1337 of such as fechtable first bluetooth sound-producing device 131 and the second bluetooth sound-producing device 133 converted how many sample sizes when very first time point.In embodiments of the present invention, mainly capture the sample size of same time point conversion, it is important to note that the non-concurrent that same time point refers to, when applying, multiple phonation unit 13 can capture the sample size of conversion simultaneously, also can capture the sample size changed during difference.
Then can compare the sample size that each bluetooth sound-producing device 13 puts conversion at one time further, as shown in step 23.For the first bluetooth sound-producing device sound unit 131 and the second bluetooth sound-producing device sound unit 133, the first bluetooth sound-producing device 131 and the second bluetooth sound-producing device 133 sample size in very first time point conversion can be compared, such as, compare the sample size of D/A conversion unit 1317/1337 in very first time point conversion of the first bluetooth sound-producing device 131 and the second bluetooth sound-producing device 133.If it is not identical that the first bluetooth sound-producing device 131 and the second bluetooth sound-producing device 133 put in the very first time sample size changed, just represent there is nonsynchronous situation between the first bluetooth sound-producing device 131 and the second bluetooth sound-producing device 133.
According to the sample size that bluetooth sound-producing device 13 is changed, adjustment bluetooth sound-producing device 13 changes the speed of sample, as shown in step 25.For the first bluetooth sound-producing device sound unit 131 and the second bluetooth sound-producing device sound unit 133, when the sample size that the first bluetooth sound-producing device 131 and the second bluetooth sound-producing device 133 are changed is different, just asynchronous both representing, now adjustable first bluetooth sound-producing device 131 and/or the second bluetooth sound-producing device 133 change the speed of sample.
In an embodiment of the present invention, if the first bluetooth sound-producing device 131 is main device, and the second bluetooth sound-producing device 133 is slave unit, the sample size then can changed according to the first bluetooth sound-producing device 131 and the second bluetooth sound-producing device 133 or the result compared, adjust the speed that the second bluetooth sound-producing device 133 changes sample, the such as sample rate of the sample conversion rate adjustment unit 1335 of adjustable second bluetooth sound-producing device 133, the second bluetooth sound-producing device 133 and the first bluetooth sound-producing device 131 is made to put the sample size of conversion at one time identical, reach the object of synchronous first bluetooth sound-producing device 131 and the second bluetooth sound-producing device 133.Certainly in different embodiments, also adjustable first bluetooth sound-producing device 131 changes the speed of sample, or adjust the speed that the first bluetooth sound-producing device 131 and the second bluetooth sound-producing device 133 change sample simultaneously, all can make the first bluetooth sound-producing device 131 and the second bluetooth sound-producing device 133 synchronous.
In addition in an embodiment of the present invention, also can omit above-mentioned steps 23, and directly adjust with the sample size of conversion the speed that bluetooth sound-producing device 13 changes sample, the object of each bluetooth sound-producing device 13 synchronous can be reached equally.
Before carrying out the step 21 described in the embodiment of the present invention, can the clock pulse of synchronous first bluetooth sound-producing device 131 and the second bluetooth sound-producing device 133, the execution mode as described in Fig. 1 and Fig. 2 of the present invention, then this just repeats no more.In addition because the first bluetooth sound-producing device 131 and the second bluetooth sound-producing device 133 use identical clock pulse, therefore by clock pulse definition very first time point, and the sample size that fechtable first bluetooth sound-producing device 131 and the second bluetooth sound-producing device 133 are changed at very first time point.
Fig. 4 is the flow chart of steps of the another embodiment of audio synchronization method of bluetooth sound-producing device of the present invention.Shown in Fig. 1 and Fig. 2, convenience embodiment of the present invention during in order to illustrate mainly is described with two phonation units 13, but the not restriction of the present invention of the quantity of phonation unit 13, also can be applied in plural phonation unit 13 by method of the present invention when practical application.
In embodiments of the present invention, the first bluetooth sound-producing device 131 is defined by main device (Master), and the second bluetooth sound-producing device 133 is then defined as slave unit (Slave).First bluetooth sound-producing device 131 and the second bluetooth sound-producing device 133 can carry out matching and bluetooth connection, make the clock pulse of the first bluetooth sound-producing device 131 and the second bluetooth sound-producing device 133 synchronous, pairing wherein between the first bluetooth sound-producing device 131 and the second bluetooth sound-producing device 133 and method of attachment illustrate in the above embodiments, just repeat no more at this.
Capture the sample size of the first bluetooth sound-producing device 131 in very first time point conversion, such as capture the sample size of D/A conversion unit 1317 in very first time point T1 conversion of the first bluetooth sound-producing device 131, and produce the first sample size SC1, as indicated at step 31.First bluetooth sound-producing device 131 very first time can be put T1 and the first sample size SC1 is sent to the second bluetooth sound-producing device 133, as shown in step 33.
Second bluetooth sound-producing device 133 is after receiving very first time point T1 and the first sample size SC1, just the sample size that this is changed in very first time point T1 can be captured, such as capture the sample size of D/A conversion unit 1337 in very first time point T1 conversion of the second bluetooth sound-producing device 133, and produce the second sample size SC2, as shown at step 35.Then just can further more same the very first time point T1 acquisition the first sample size SC1 and the second sample size SC2, as shown in step 37.
According to the first sample size SC1 and the second sample size SC2, or the comparative result of the first sample size SC1 and the second sample size SC2, whether synchronously just can learn between the first bluetooth sound-producing device 131 with the second bluetooth sound-producing device 133.If both are asynchronous, just can adjust according to the comparative result of the sample size of conversion or sample size the speed that the second bluetooth sound-producing device 133 changes sample, such as adjust the sample rate of the sample conversion rate adjustment unit 1335 of the second bluetooth sound-producing device 133, to make the second bluetooth sound-producing device 133 and the first bluetooth sound-producing device 131 synchronously, as shown in step 39.
In addition in an embodiment of the present invention, also can omit above-mentioned steps 37, and directly adjust with the sample size of conversion the speed that bluetooth sound-producing device 13 changes sample, the object of each bluetooth sound-producing device 13 synchronous can be reached equally.
State on the invention in embodiment, have and mention that multiple bluetooth sound-producing device 13 is capturing the sample size of conversion at the same time and/or at very first time point.Because multiple bluetooth sound-producing device 13 is in the process of carrying out bluetooth connection, just completed the synchronous action of clock pulse, the clock pulse that therefore each bluetooth sound-producing device 13 uses is all identical.In an embodiment of the present invention, can directly utilize the clock pulse of bluetooth sound-producing device 13 as at the same time and/or the very first time point calculating standard.
For example, each bluetooth sound-producing device 13 can be set, each bluetooth sound-producing device 13 is made to capture the sample size of conversion when the quantity of clock pulse is the multiple of 100 or 100, and according to the sample size of conversion or the comparative result of sample size, adjust the sample rate of one or more bluetooth sound-producing device 13.Just in the process using bluetooth sound-producing device 13, the audio sync of each bluetooth sound-producing device 13 can constantly be carried out thus.
Content of the present invention for convenience of explanation, in the examples below, further digital audio package 12 and sample number are quantized, as shown in Figure 5-Figure 7, certainly the quantity wherein defined only content of the present invention for convenience of description, quantity itself is not restriction of the present invention.
Shown in Fig. 5, first bluetooth sound-producing device 131 and the digital audio package 12 that the second bluetooth sound-producing device 133 receives and photograph is same, wherein digital audio package 12 comprises the first package 121, second package 123 and the 3rd package 125, and supposes that each package 121/123/125 all comprises 100 sample sizes.First bluetooth sound-producing device 131 is the sum total of the first package 121, second package 123 and part the 3rd package 125 in the sample conversion quantity of very first time point T1 acquisition, such as the first bluetooth sound-producing device 131 only converted 50 sample sizes in the 3rd package 125, then the first bluetooth sound-producing device 131 will be 250 sample sizes at the sample size of very first time point T1 conversion.
Ideally, the digital audio package 12 that first bluetooth sound-producing device 131 and the second bluetooth sound-producing device 133 are changed should be identical, and the sample size that therefore the first bluetooth sound-producing device 131 and the second bluetooth sound-producing device 133 are changed on very first time point T1 also should be identical.In other words, if the second bluetooth sound-producing device 133 is synchronous with the first bluetooth sound-producing device 133, then the second bluetooth sound-producing device 133 also can be 250 sample sizes at the sample size of very first time point T1 conversion.
If the second bluetooth sound-producing device 133 is greater than 250 sample sizes at the sample size of very first time point T1 conversion for this reason, just represent that the second bluetooth sound-producing device 133 changes the speed of sample too fast, and need reduction by second bluetooth sound-producing device 133 to change the speed of sample, to make the second bluetooth sound-producing device 133 synchronous with the first bluetooth sound-producing device 131.
Contrary, if the second bluetooth sound-producing device 133 is less than 250 sample sizes in the sample conversion quantity of very first time point T1 acquisition, just represent that the second bluetooth sound-producing device 133 changes the speed of sample excessively slow, and need raising second bluetooth sound-producing device 133 to change the speed of sample.The speed of conversion sample is such as adjusted by the sample conversion rate adjustment unit 1335 in the second bluetooth sound-producing device 133.
State on the invention in embodiment, be all the sample size putting accumulation according to acquisition and/or the multiple bluetooth sound-producing device 13 of comparison at one time, adjust the speed that multiple bluetooth sound-producing device 13 changes sample.In general, when the quality of connection between each bluetooth sound-producing device 13 is good, above-mentioned synchronous method can't have problems.
But quality of connection between each bluetooth sound-producing device 13 not good time, the digital audio package 12 of transmission may be caused to lose or Delay time, and the sample size accumulated may be caused to lose judge the function whether multiple bluetooth sound-producing device 13 synchronous.
Please refer to as shown in Figure 6, when the transmission quality between the first bluetooth sound-producing device 131 and the second bluetooth sound-producing device 133 is not good, the second bluetooth sound-producing device 133 may be caused to receive the time delay of the 3rd package 125.Generally speaking, in time there is package propagation delay, the second bluetooth sound-producing device 133 can fill blank package 124 usually, to fill up the time that the second bluetooth sound-producing device 133 did not receive or processed the 3rd package 125.But thus, second bluetooth sound-producing device 133 just can comprise blank package 124 at the sample size of very first time point T1 conversion, and cause the sample size of the first bluetooth sound-producing device 131 and the second bluetooth sound-producing device 133 actual converted digital audio package 12 different, and then the sample size forfeiture accumulated is caused to judge the function whether multiple bluetooth sound-producing device 13 is synchronous.
The digital audio package 12 that first bluetooth sound-producing device 131 and the second bluetooth sound-producing device 133 receive and change specifically comprises the 3rd package 125 of the first package 121, second package 123 and part, and suppose that the first package 121, second package 123 and the 3rd package 125 all comprise 100 sample sizes, blank package 124 then comprises 40 sample sizes.If the first bluetooth sound-producing device 131 is 250 sample sizes in the sample conversion quantity of very first time point T1 accumulation, and the second bluetooth sound-producing device 133 is when the sample conversion quantity of very first time point T1 accumulation is also 250 sample sizes, the first bluetooth sound-producing device 131 should be represented and put T1 for synchronous with the second bluetooth sound-producing device 133 in the very first time.But in 250 sample sizes that in fact the second bluetooth sound-producing device 133 is changed, further comprises 40 sample sizes of blank package 124, therefore the sample size of the digital audio package 12 of the second bluetooth sound-producing device 133 actual converted should be 210 sample sizes.In other words, when the transmission quality of the first bluetooth sound-producing device 131 and the second bluetooth sound-producing device 133 is not good, or accumulation sample size produce error time, the sample size that such as the second bluetooth sound-producing device 133 is accumulated additionally includes the sample size of blank package 124, and audio synchronization method of the present invention just can be made to lose effectiveness.
In order to solve the above problems, each digital audio package 12 of the present invention can comprise corresponding sequence number (sequence number), wherein sequence number in order to the sample size accumulated before indicating each digital audio package 12, such as, can put on the first sequence number 161, second sequence number 163 and the 3rd sequence number 165 respectively on the first package 121, second package 123 and the 3rd package 125.First sequence number 161, second sequence number 163 and the 3rd sequence number 165 can in order to represent the sample size of accumulation before the first package 121, second package 123 and the 3rd package 125.
As shown in Figure 7, if the first package 121, second package 123 and the 3rd package 125 all comprise 100 sample sizes, then because there is not the sample size of accumulation before the first package 121, therefore the first sequence number 161 is signable is 0.Have accumulated 100 sample sizes of the first package 121 before second package 123, therefore the second sequence number 163 of the second package 123 is signable is 100.Have accumulated 200 sample sizes of the first package 121 and the second package 123 before 3rd package 125, therefore the 3rd sequence number 165 of the 3rd package 125 is signable is 200.Capture the second bluetooth sound-producing device 133 when the sample size of very first time point T1 conversion, directly can learn that the second bluetooth sound-producing device 133 is before the sample size of conversion the 3rd package 125 by the 3rd sequence number 165 on the 3rd package 125,200 samples are converted, as the sum total of the first package 121 and the second package 123, the sample size of its empty package 124 can't be calculated.Even if there is blank package 124 thus between the second package 123 and the 3rd package 125, the sample size of acquisition second bluetooth sound-producing device 133 converted digital audio package 12 also can not be affected.
As long as certainly above-mentioned sequence number can indicate the sample size of processed package 12, the sample size forfeiture that just can solve accumulation judges the function whether multiple bluetooth sound-producing device 13 is synchronous, therefore how sequence number will indicate the sample size not restriction of the present invention of package 12, as long as sequence number can indicate correct sample size.
Certainly; the present invention also can have other various embodiments; when not deviating from the present invention's spirit and essence thereof; those of ordinary skill in the art are when making various corresponding change and distortion according to the present invention, but these change accordingly and are out of shape the protection range that all should belong to the claim appended by the present invention.
Claims (16)
1. the audio synchronization method of a bluetooth sound-producing device, wherein bluetooth sound-producing device comprises the first bluetooth sound-producing device and the second bluetooth sound-producing device, first bluetooth sound-producing device and the second bluetooth sound-producing device, by Bluetooth transmission digital audio package, is characterized in that, comprise the following steps:
Capture the first bluetooth sound-producing device and the second bluetooth sound-producing device sample size in very first time point conversion; And
According to the sample size that the first bluetooth sound-producing device and the second bluetooth sound-producing device are changed, adjust the speed of the second bluetooth sound-producing device conversion sample.
2. audio synchronization method as claimed in claim 1, is characterized in that, comprise the following steps: compare the first bluetooth sound-producing device and the second bluetooth sound-producing device sample size in very first time point conversion.
3. audio synchronization method as claimed in claim 1, it is characterized in that, the first bluetooth sound-producing device is main device, and the second bluetooth sound-producing device is then slave unit.
4. audio synchronization method as claimed in claim 1, is characterized in that, comprise following methods:
Capture the sample size that the first bluetooth sound-producing device and the second bluetooth sound-producing device put conversion at one time.
5. audio synchronization method as claimed in claim 1, is characterized in that, comprise the following steps: the clock pulse of synchronous first bluetooth sound-producing device and the second bluetooth sound-producing device.
6. audio synchronization method as claimed in claim 5, is characterized in that, comprise the following steps: the first bluetooth sound-producing device and the second bluetooth sound-producing device match, make the first bluetooth sound-producing device and the second bluetooth sound-producing device use identical clock pulse.
7. audio synchronization method as claimed in claim 6, is characterized in that, comprise the following steps: the first bluetooth sound-producing device and the second bluetooth sound-producing device are by clock pulse definition very first time point.
8. audio synchronization method as claimed in claim 1, its feature in, the first bluetooth sound-producing device and the second bluetooth sound-producing device comprise:
Buffer cell, temporary digital audio package;
Decoding unit, connects buffer cell, and the sample of decoded digital audio frequency package;
Sample conversion rate adjustment unit, connects decoding unit, and adjusts sample rate; And
D/A conversion unit, connects sample conversion rate adjustment unit, and sample conversion is become simulated audio signal.
9. audio synchronization method as claimed in claim 8, is characterized in that, comprise the following steps:
Capture the sample size of D/A conversion unit in very first time point conversion of the first bluetooth sound-producing device and the second bluetooth sound-producing device; And
According to the sample size that the first bluetooth sound-producing device and the second bluetooth sound-producing device are changed, adjust the sample rate of the sample conversion rate adjustment unit of the second bluetooth sound-producing device.
10. audio synchronization method as claimed in claim 9, is characterized in that, comprise the following steps: the sample size of D/A conversion unit in very first time point conversion comparing the first bluetooth sound-producing device and the second bluetooth sound-producing device.
11. audio synchronization methods as claimed in claim 1, it is characterized in that, comprise several digital audio packages, each digital audio package all comprises corresponding sequence number, the sample size of each sequence number respectively in order to accumulate before indicating each digital audio package.
The audio synchronization method of 12. 1 kinds of bluetooth sound-producing devices, wherein bluetooth sound-producing device comprises the first bluetooth sound-producing device and the second bluetooth sound-producing device, first bluetooth sound-producing device and the second bluetooth sound-producing device are undertaken connecting and transmission of digital audio frequency package by bluetooth, it is characterized in that, comprise the following steps:
Capture the sample size of the first bluetooth sound-producing device in very first time point conversion, and produce the first sample size;
To put the very first time and the first sample size is sent to the second bluetooth sound-producing device by the first bluetooth sound-producing device;
Capture the sample size of the second bluetooth sound-producing device in very first time point conversion, and produce the second sample size; And
According to the first sample size and the second sample size, adjust the speed of the second bluetooth sound-producing device conversion sample.
13. audio synchronization methods as claimed in claim 12, is characterized in that, comprise the following steps: compare the first bluetooth sound-producing device and the second bluetooth sound-producing device sample size in very first time point conversion.
14. audio synchronization methods as claimed in claim 12, is characterized in that, comprise the following steps: the clock pulse of synchronous first bluetooth sound-producing device and the second bluetooth sound-producing device.
15. audio synchronization methods as claimed in claim 14, is characterized in that, comprise the following steps: the first bluetooth sound-producing device and the second bluetooth sound-producing device are by clock pulse definition very first time point.
16. audio synchronization methods as claimed in claim 12, it is characterized in that, comprise several digital audio packages, each digital audio package all comprises corresponding sequence number, the sample size of each sequence number respectively in order to accumulate before indicating each digital audio package.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410524717.6A CN104320843B (en) | 2014-10-08 | 2014-10-08 | Audio synchronization method of Bluetooth sound production device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410524717.6A CN104320843B (en) | 2014-10-08 | 2014-10-08 | Audio synchronization method of Bluetooth sound production device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104320843A true CN104320843A (en) | 2015-01-28 |
| CN104320843B CN104320843B (en) | 2020-07-24 |
Family
ID=52375991
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410524717.6A Active CN104320843B (en) | 2014-10-08 | 2014-10-08 | Audio synchronization method of Bluetooth sound production device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104320843B (en) |
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104980191A (en) * | 2015-04-23 | 2015-10-14 | 络达科技股份有限公司 | Sharing method for Bluetooth audio packet |
| CN107040874A (en) * | 2017-03-07 | 2017-08-11 | 建荣半导体（深圳）有限公司 | Method, device and the bluetooth equipment of blue-teeth data simultaneously operating |
| CN107170460A (en) * | 2017-06-30 | 2017-09-15 | 深圳Tcl新技术有限公司 | Sound quality adjusting method, system, host side and storage medium |
| CN107231587A (en) * | 2016-03-25 | 2017-10-03 | 半导体元件工业有限责任公司 | Audio frequency broadcast system |
| US9794393B2 (en) | 2015-04-23 | 2017-10-17 | Airoha Technology Corp. | Bluetooth audio packet sharing method |
| CN108111997A (en) * | 2017-12-15 | 2018-06-01 | 珠海市杰理科技股份有限公司 | Bluetooth equipment audio synchronization method and system |
| CN109521988A (en) * | 2017-09-18 | 2019-03-26 | 炬芯（珠海）科技有限公司 | A kind of audio plays synchronous method and device |
| CN111885554A (en) * | 2020-04-24 | 2020-11-03 | 珠海市杰理科技股份有限公司 | Link switching method based on double-wireless Bluetooth communication and related equipment |
| CN112235685A (en) * | 2020-09-30 | 2021-01-15 | 瑞芯微电子股份有限公司 | Sound box networking method and sound box system |
| CN112534830A (en) * | 2018-10-23 | 2021-03-19 | 谷歌有限责任公司 | Two-stage role switching |
| US11134367B2 (en) | 2019-10-03 | 2021-09-28 | Realtek Semiconductor Corp. | Main bluetooth circuit of multi-member bluetooth device capable of dynamically switching operation mode |
| TWI743935B (en) * | 2019-10-03 | 2021-10-21 | 瑞昱半導體股份有限公司 | Multi-member bluetooth device capable of dynamically switching operation mode |
| US11375579B2 (en) | 2019-10-03 | 2022-06-28 | Realtek Semiconductor Corp. | Multi-member Bluetooth device capable of adaptively switching operation mode in response to data type change of received packets, and related main Bluetooth circuit and auxiliary Bluetooth circuit |
| US11412576B2 (en) | 2019-10-03 | 2022-08-09 | Realtek Semiconductor Corp. | Auxiliary Bluetooth circuit of multi-member Bluetooth device capable of dynamically switching operation mode |
| US11570081B2 (en) | 2019-10-03 | 2023-01-31 | Realtek Semiconductor Corp. | Multi-member bluetooth device capable of dynamically switching operation mode |
| US11632617B2 (en) | 2020-11-05 | 2023-04-18 | Shenzhen GOODIX Technology Co., Ltd. | Method, apparatus and device for synchronously playing audio |
| TWI843576B (en) * | 2022-10-26 | 2024-05-21 | 大陸商蘇州磐聯集成電路科技股份有限公司 | Audio synchronous circuit and audio synchronous method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101742405A (en) * | 2008-11-17 | 2010-06-16 | 英华达（南京）科技有限公司 | Bluetooth broadcast communication system and Bluetooth broadcast communication method |
| US20100255890A1 (en) * | 2001-06-27 | 2010-10-07 | John Mikkelsen | Download management of audio and visual content, product method and system |
| CN102148777A (en) * | 2010-02-04 | 2011-08-10 | 创杰科技股份有限公司 | Simplified acquisition apparatus and method for a bluetooth receiver |
| US20120058727A1 (en) * | 2010-09-02 | 2012-03-08 | Passif Semiconductor Corp. | Un-tethered wireless stereo speaker system |
| US20130266152A1 (en) * | 2012-04-06 | 2013-10-10 | Koss Corporation | Synchronizing wireless earphones |
| WO2014086388A1 (en) * | 2012-12-03 | 2014-06-12 | Phonak Ag | Wireless streaming of an audio signal to multiple audio receiver devices |
-
2014
- 2014-10-08 CN CN201410524717.6A patent/CN104320843B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100255890A1 (en) * | 2001-06-27 | 2010-10-07 | John Mikkelsen | Download management of audio and visual content, product method and system |
| CN101742405A (en) * | 2008-11-17 | 2010-06-16 | 英华达（南京）科技有限公司 | Bluetooth broadcast communication system and Bluetooth broadcast communication method |
| CN102148777A (en) * | 2010-02-04 | 2011-08-10 | 创杰科技股份有限公司 | Simplified acquisition apparatus and method for a bluetooth receiver |
| US20120058727A1 (en) * | 2010-09-02 | 2012-03-08 | Passif Semiconductor Corp. | Un-tethered wireless stereo speaker system |
| US20130266152A1 (en) * | 2012-04-06 | 2013-10-10 | Koss Corporation | Synchronizing wireless earphones |
| WO2014086388A1 (en) * | 2012-12-03 | 2014-06-12 | Phonak Ag | Wireless streaming of an audio signal to multiple audio receiver devices |
Cited By (26)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104980191A (en) * | 2015-04-23 | 2015-10-14 | 络达科技股份有限公司 | Sharing method for Bluetooth audio packet |
| US9794393B2 (en) | 2015-04-23 | 2017-10-17 | Airoha Technology Corp. | Bluetooth audio packet sharing method |
| CN107231587A (en) * | 2016-03-25 | 2017-10-03 | 半导体元件工业有限责任公司 | Audio frequency broadcast system |
| US10809969B2 (en) | 2016-03-25 | 2020-10-20 | Semiconductor Components Industries, Llc | Systems and methods for audio playback |
| CN107040874A (en) * | 2017-03-07 | 2017-08-11 | 建荣半导体（深圳）有限公司 | Method, device and the bluetooth equipment of blue-teeth data simultaneously operating |
| CN107170460A (en) * | 2017-06-30 | 2017-09-15 | 深圳Tcl新技术有限公司 | Sound quality adjusting method, system, host side and storage medium |
| CN107170460B (en) * | 2017-06-30 | 2020-12-08 | 深圳Tcl新技术有限公司 | Sound quality adjusting method, system, host terminal and storage medium |
| US11202300B2 (en) | 2017-06-30 | 2021-12-14 | Shenzhen Tcl New Technology Co., Ltd. | Method and system for adjusting sound quality, and host terminal |
| CN109521988A (en) * | 2017-09-18 | 2019-03-26 | 炬芯（珠海）科技有限公司 | A kind of audio plays synchronous method and device |
| CN109521988B (en) * | 2017-09-18 | 2022-04-15 | 炬芯科技股份有限公司 | Audio playing synchronization method and device |
| CN108111997A (en) * | 2017-12-15 | 2018-06-01 | 珠海市杰理科技股份有限公司 | Bluetooth equipment audio synchronization method and system |
| CN108111997B (en) * | 2017-12-15 | 2020-12-08 | 珠海市杰理科技股份有限公司 | Bluetooth device audio synchronization method and system |
| CN112534830A (en) * | 2018-10-23 | 2021-03-19 | 谷歌有限责任公司 | Two-stage role switching |
| CN112534830B (en) * | 2018-10-23 | 2023-03-28 | 谷歌有限责任公司 | Two-stage role switching |
| US11570081B2 (en) | 2019-10-03 | 2023-01-31 | Realtek Semiconductor Corp. | Multi-member bluetooth device capable of dynamically switching operation mode |
| TWI743935B (en) * | 2019-10-03 | 2021-10-21 | 瑞昱半導體股份有限公司 | Multi-member bluetooth device capable of dynamically switching operation mode |
| US11910490B2 (en) | 2019-10-03 | 2024-02-20 | Realtek Semiconductor Corp. | Multi-member Bluetooth device capable of dynamically switching operation mode, and related main Bluetooth circuit and auxiliary Bluetooth circuit |
| US11134367B2 (en) | 2019-10-03 | 2021-09-28 | Realtek Semiconductor Corp. | Main bluetooth circuit of multi-member bluetooth device capable of dynamically switching operation mode |
| US11375579B2 (en) | 2019-10-03 | 2022-06-28 | Realtek Semiconductor Corp. | Multi-member Bluetooth device capable of adaptively switching operation mode in response to data type change of received packets, and related main Bluetooth circuit and auxiliary Bluetooth circuit |
| US11412576B2 (en) | 2019-10-03 | 2022-08-09 | Realtek Semiconductor Corp. | Auxiliary Bluetooth circuit of multi-member Bluetooth device capable of dynamically switching operation mode |
| CN111885554A (en) * | 2020-04-24 | 2020-11-03 | 珠海市杰理科技股份有限公司 | Link switching method based on double-wireless Bluetooth communication and related equipment |
| CN111885554B (en) * | 2020-04-24 | 2023-09-12 | 珠海市杰理科技股份有限公司 | Link switching method based on dual-wireless Bluetooth communication and related equipment |
| CN112235685B (en) * | 2020-09-30 | 2022-07-15 | 瑞芯微电子股份有限公司 | Sound box networking method and sound box system |
| CN112235685A (en) * | 2020-09-30 | 2021-01-15 | 瑞芯微电子股份有限公司 | Sound box networking method and sound box system |
| US11632617B2 (en) | 2020-11-05 | 2023-04-18 | Shenzhen GOODIX Technology Co., Ltd. | Method, apparatus and device for synchronously playing audio |
| TWI843576B (en) * | 2022-10-26 | 2024-05-21 | 大陸商蘇州磐聯集成電路科技股份有限公司 | Audio synchronous circuit and audio synchronous method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104320843B (en) | 2020-07-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104320843A (en) | Audio synchronization method for Bluetooth sounding devices | |
| US9817629B2 (en) | Audio synchronization method for bluetooth speakers | |
| CN102656931A (en) | Wireless base station, and relay device | |
| WO2016048067A3 (en) | Synchronization procedure and resource control method and apparatus for communication in d2d system | |
| WO2008099446A1 (en) | Communication system, communication device, wireless base station and wireless terminal station | |
| CN104320699B (en) | The dynamic adjusting method of bluetooth sound-producing device | |
| WO2007076301A3 (en) | Method and apparatus for determining distances between wireless communication devices using low frequency signals | |
| EP4336863A3 (en) | Latency negotiation in a heterogeneous network of synchronized speakers | |
| WO2011043636A3 (en) | Apparatus for transmitting and receiving uplink backhaul signal in wireless communication system and method thereof | |
| WO2011025246A3 (en) | Synchronization control method for data transmission/reception, and station for data transmission/reception synchronization | |
| WO2011043579A3 (en) | Method for uplink multi-reception, and base station device using same | |
| CN105306110A (en) | Methods and system for realizing music synchronous play | |
| CN104104762A (en) | Efficient audio test method of communication terminal | |
| EP3806549A4 (en) | Energy-saving signal sending method, energy-saving signal receiving method, base station, and terminal | |
| WO2008096407A1 (en) | Terminal, method for transmitting random access signal, and base station | |
| WO2016058344A1 (en) | Method, apparatus, communication equipment and storage media for determining link delay | |
| CN107438990B (en) | Method and apparatus for delivering timing information | |
| CN105635907A (en) | Digital microphone | |
| WO2011021904A3 (en) | Method and apparatus for adjusting signal transmission starting point of terminal in wireless network | |
| CN105472509A (en) | Audio signal sending and receiving method and device | |
| CN104980191A (en) | Sharing method for Bluetooth audio packet | |
| CN102710303B (en) | Wireless audio transmission method, system and USB Dongle equipment | |
| RU2016144520A (en) | COMMUNICATION SYSTEM FOR USE IN RAILWAY MOBILE COMPOSITION | |
| WO2011159072A3 (en) | Interference removal method in multi-node system and terminal using same | |
| CN102326346A (en) | Method and apparatus for transmitting audio data |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Science Park, Hsinchu, Taiwan, China Road 6-5, building 5 Patentee after: Dafa Technology Co.,Ltd. Address before: Science Park, Hsinchu, Taiwan, China Road 6-5, building 5 Patentee before: AIROHA TECHNOLOGY CORP. |