CN104065401B - Based on HID bluetooth module voice transmission method and HID blue tooth voice communicator - Google Patents
Based on HID bluetooth module voice transmission method and HID blue tooth voice communicator Download PDFInfo
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- CN104065401B CN104065401B CN201410288245.9A CN201410288245A CN104065401B CN 104065401 B CN104065401 B CN 104065401B CN 201410288245 A CN201410288245 A CN 201410288245A CN 104065401 B CN104065401 B CN 104065401B
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Abstract
The invention discloses a kind of HID bluetooth module voice transmission method and HID blue tooth voice communicator, including the equipment end and the host side that are carried out two-way voice signals transmission by HID bluetooth module, comprise the following steps: (1), equipment end gather voice signal, and carry out A/D conversion；(2), the signal after conversion sends after equipment end data buffer zone buffers；(3), host side receives voice signal, row buffering of going forward side by side；(4), received data is buffered to account for the ratio of data buffer zone gross space when being T1 by host side, carry out D/A conversion and play, host side sends voice signal to equipment end simultaneously, and the step that its transmitting voice signal step sends voice signal with equipment end to host side is consistent.The HID bluetooth module voice transmission method of the present invention, achieves voice transfer by HID bluetooth module, has saved cost greatly, by flow-control, solves the noise problem that HID bluetooth module transfer rate instability causes being brought during voice transfer.
Description
Technical field
The invention belongs to technical field of bluetooth communication, specifically, relate to a kind of HID bluetooth module voice transmission method and HID blue tooth voice communicator.
Background technology
Development along with Bluetooth technology, Bluetooth technology is used to carry out data transmission applying more and more extensive, according to the corresponding different transmission demand of different application environment, currently mainly application includes following several: 1, integration has the bluetooth module of human-computer interface device specification (HID), the bluetooth module of this kind of specification is for keyboard, Mus mark, specification designed by the peripheral product such as game machine controller, utilize human-computer interface device specification, it is connected with the computer having Bluetooth function, and form Wireless Keyboard or Mus mark, its transmission general data still may be used, characteristic due to HID, unstable to message transmission rate, be not suitable for carrying out transmitting voice signal, its advantage is that chip cost is low, product cost can be reduced while meeting Bluetooth data transfer function.2, integration has the bluetooth module of advanced audio distribution specification (A2DP), and this kind of bluetooth module can carry out voice transfer, the most conventional bluetooth earphone, Baffle Box of Bluetooth etc., is all to use A2DP bluetooth module, and A2DP bluetooth module is much higher compared with HID bluetooth module cost.3, integration has the bluetooth module of audio-visual long-range control specification (AVRCP), AVRCP bluetooth module and A2DP bluetooth module are the advanced component software specifications developed with Bluetooth Special Interest group (SIG) formulation standard, by its specification, multiple multimedia function can be performed, therefore, cost equally can be much higher compared with HID bluetooth module.
Along with people's demand to using Bluetooth transmission voice is increasing, HID bluetooth equipment at present, such as blue Tooth remote controller, Bluetooth gamepad etc. also have the demand of voice transmission capabilities, if bluetooth A2DP being applied on HID bluetooth equipment, so can significantly increase cost, be unfavorable for the market competition and the technological progress of product.
Summary of the invention
The present invention is to solve that existing HID bluetooth module is not suitable for the technical problem of transmission of speech signals, it is provided that a kind of HID bluetooth module voice transmission method and HID blue tooth voice communicator.
In order to solve above-mentioned technical problem, the present invention is achieved by the following technical solutions:
A kind of based on HID bluetooth module voice transmission method, including being carried out equipment end and the host side of two-way voice signals transmission by HID bluetooth module, comprise the following steps:
(1), equipment end gather voice signal, and described voice signal is carried out A/D conversion, the voice signal of simulation is converted into digital signal；
(2), conversion after digital signal after equipment end data buffer zone buffers, equipment end HID bluetooth module send；
(3), host side receives voice digital signal by host side HID bluetooth module, and sends and buffer to host side data buffer zone；
(4), host side received data is buffered to account for the ratio of data buffer zone gross space when being T1, received data in data buffer zone is carried out D/A conversion, is converted into the voice signal of simulation and plays, wherein, T1 for setting threshold value,
Described host side sends voice signal to equipment end simultaneously, and the step that its transmitting voice signal step sends voice signal with equipment end to host side is consistent.
Further, also include after step (4):
(5), flow-control module monitor the data volume of host side data buffer zone in real time, and according to the data volume of host side data buffer zone, produce control command and send to equipment end, equipment end adjusts the data volume sent according to control command.
Further, in described step (5), also include:
Flow-control module judges that whether the data of host side data buffer zone account for ratio T of data buffer zone gross space more than T1+ △ t1, if, then producing control command to send to equipment end, equipment end reduces the data volume sent according to control command, and wherein △ t1 is the upper limit deviation allowing to exceed.
Further, in described step (5), also include:
Flow-control module judges that whether the data of data buffer zone account for ratio T of data buffer zone gross space less than T1-△ t2, if, then producing control command to send to equipment end, the data volume that equipment end sends according to control command increase, wherein △ t2 is the lower limit deviation allowing to exceed.
Preferably, the mode of described minimizing sends data volume or the data volume that increase sends is respectively and reduces or increase message transmission rate.
Preferably, described data buffer zone and/or receiving terminal data buffer zone are circular buffer.
Based on above-mentioned a kind of HID bluetooth module voice transmission method, invention also provides a kind of HID blue tooth voice communicator, including being carried out equipment end and the host side of two-way voice signals transmission by HID bluetooth module,
Wherein, described equipment end includes:
Equipment end audio collecting device, is used for gathering voice signal；
Equipment end audio codec, for carrying out analog/digital conversion or D/A switch by voice signal；
Equipment end controller, for coming from equipment end audio collecting device or the data buffering of equipment end HID bluetooth module, and controls to send；
Equipment end HID bluetooth module, for the signal coming from equipment end audio collecting device that equipment end controller buffers is sent, or the data that Receiving Host end HID bluetooth module sends；
Described host side includes:
Host side audio collecting device, is used for gathering voice signal；
Host side audio codec, for carrying out analog/digital conversion or D/A switch by voice signal；
Host-side controller, for coming from host side audio collecting device or the data buffering of host side HID bluetooth module, and controls to send；
Host side HID bluetooth module, for being sent by the signal coming from host side audio collecting device that host-side controller buffers, or receives the data that equipment end HID bluetooth module sends.
Further, also including flow-control module, for monitoring host side or the data volume of equipment end data buffer zone in real time, and the most corresponding control command that produces sends to equipment end or host side.
Further, described host side and/or equipment end also include audio playing apparatus, for playing the voice signal that the other side sends.
Further, described host side also includes button and/or sensor inputs.
Compared with prior art, advantages of the present invention and good effect be: the HID bluetooth module voice transmission method of the present invention, voice transfer is achieved by HID bluetooth module, save cost greatly, by flow-control, solve the noise problem that HID bluetooth module transfer rate instability causes being brought during voice transfer.
After reading in conjunction with the accompanying the detailed description of embodiment of the present invention, the other features and advantages of the invention will become clearer from.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, the accompanying drawing used required in embodiment or description of the prior art will be briefly described below, apparently, accompanying drawing in describing below is only some embodiments of the present invention, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is HID bluetooth module voice transmission method one embodiment flow chart proposed by the invention；
Fig. 2 is HID blue tooth voice communicator one embodiment block diagram proposed by the invention；
Fig. 3 is to have to receive and the host side one embodiment block diagram of sending function simultaneously.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is only a part of embodiment of the present invention rather than whole embodiments.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art are obtained under not making creative work premise, broadly fall into the scope of protection of the invention.
Embodiment one, present embodiments provides a kind of HID bluetooth module voice transmission method, as in figure 2 it is shown, include equipment end and the host side being carried out two-way voice signals transmission by HID bluetooth module, as it is shown in figure 1, comprise the following steps:
S1, equipment end gather voice signal, and described voice signal is carried out A/D conversion, and the voice signal of simulation is converted into digital signal；
Digital signal after S2, conversion, after equipment end data buffer zone buffers, is sent by equipment end HID bluetooth module；
S3, host side receive voice digital signal by host side HID bluetooth module, and send and buffer to host side data buffer zone；
Received data is buffered to account for the ratio of data buffer zone gross space when being T1 by S4, host side, received data in data buffer zone is carried out D/A conversion, is converted into the voice signal of simulation and plays, wherein, T1 for setting threshold value,
Described host side sends voice signal to equipment end simultaneously, and the step that its transmitting voice signal step sends voice signal with equipment end to host side is consistent.
The HID bluetooth module voice transmission method of the present embodiment, by the speech data that HID bluetooth module receives being buffered at receiving terminal, when being buffered to setting data size, control receiving terminal to start data are carried out D/A conversion and broadcasting, solve the noise problem that HID bluetooth module transfer rate instability causes being brought during voice transfer, achieve the voice transfer of HID bluetooth module, without additionally integrating A2DP for HID bluetooth module, or using to integrate has the bluetooth module of A2DP to substitute, and has saved cost greatly.
When host side sends voice signal to equipment end, comprise the following steps:
S11, host side gather voice signal, and described voice signal is carried out A/D conversion, and the voice signal of simulation is converted into digital signal；
Digital signal after S12, conversion, after host side data buffer zone buffers, is sent by host side HID bluetooth module；
S13, equipment end receive voice digital signal by equipment end HID bluetooth module, and send and buffer to equipment end data buffer zone；
Received data is buffered to account for the ratio of data buffer zone gross space when being T1 by S14, equipment end, received data in data buffer zone is carried out D/A conversion, is converted into the voice signal of simulation and plays, and wherein, T1 is for setting threshold value.
As one preferred embodiment, due to HID bluetooth module data transmission instability, in order to prevent the data buffer zone of phonetic incepting side from occurring vacant, speech play disruption, and prevent the data buffer zone of phonetic incepting side completely, transmitting terminal continues to cause loss of data if two-forty sends, and also includes flow-control module as shown in Figure 2, also includes after step S4:
S5, flow-control module monitor the data volume of host side data buffer zone in real time, and according to the data volume of host side data buffer zone, produce control command and send to equipment end, and equipment end adjusts the data volume sent according to control command.This step is the step when host side is as phonetic incepting side, when equipment end is as phonetic incepting side, transmitting voice signal direction should be in turn, namely: the data volume of flow-control module real-time watch device end data relief area, and according to the data volume of equipment end data buffer zone, produce control command to send to host side, equipment end adjusts the data volume sent according to control command, by arranging this step, monitor the data volume of receiving terminal data buffer zone in real time, the transmission rate of transmitting terminal is done corresponding adjustment by the size according to relief area available data amount, the data volume making receiving terminal data buffer zone is always held at constant level, both disruption had not been had, relief area can also be avoided to be filled with and to cause loss of data.
Embodiment two, present embodiments provides another HID bluetooth module voice transmission method, method based on embodiment one, gives a kind of optimal technical scheme of step 5, in described step S5, including following sub-step:
Flow-control module judges that whether the data of host side data buffer zone account for ratio T of data buffer zone gross space more than T1+ △ t1, if, then producing control command to send to equipment end, equipment end reduces the data volume sent according to control command, and wherein △ t1 is the upper limit deviation allowing to exceed.
When this step is primarily to prevent the data buffer zone of phonetic incepting side from expiring, if voice sender continues to keep original big data quantity can cause loss of data if being transmitted, by arranging the upper limit T1+ △ t1 of the data volume of data buffer zone, phonetic incepting side, when data volume is more than this upper limit, then control voice sender and reduce the data volume sent, to reduce relief area by full pressure.
Further, described step S5 further comprises the steps of:
Flow-control module judges that whether the data of data buffer zone account for ratio T of data buffer zone gross space less than T1-△ t2, if, then producing control command to send to equipment end, the data volume that equipment end sends according to control command increase, wherein △ t2 is the lower limit deviation allowing to exceed.
This step is vacant in order to prevent receiving terminal data buffer zone from occurring, speech play disruption, by arranging the lower limit T1-△ t2 of the data volume of receiving terminal data buffer zone, when data volume is less than this upper limit, then control voice sender and increase the data volume sent, vacant to prevent relief area from occurring.
By two sub-steps in step S5 of the present embodiment, the balance of receiving terminal data input/output (I/O) throughput can be realized, make average data transfer rate stable, thus solve the message transmission rate instability existed due to HID bluetooth module self, cause the problem that transmission of speech signals can exist noise, it is achieved that use HID bluetooth module to realize the transmission of high-quality voice signal.
It should be noted that, control voice sender is decreased or increased the mode of the data volume sent to be had multiple, in the present embodiment in order to current standard protocol interface, preferably reduce sending the transfer rate of data or the mode of transfer rate that raising sends data sends the data volume included in packet by reducing or increase transmitting terminal respectively.Certainly, the transmission frequency adjusting packet can also be used if desired to realize adjusting the transfer rate of data in specific occasion.
Additionally, described transmitting terminal data buffer zone and/or receiving terminal data buffer zone are circular buffer.
Embodiment three, based on the HID bluetooth module voice transmission method in embodiment one and embodiment two, present embodiments provide a kind of HID blue tooth voice communicator, as shown in Figure 2, including the equipment end and the host side that are carried out two-way voice signals transmission by HID bluetooth module
Wherein, described equipment end includes:
Equipment end audio collecting device, is used for gathering voice signal；
Equipment end audio codec, for carrying out analog/digital conversion or D/A switch by voice signal；
Equipment end controller, for coming from equipment end audio collecting device or the data buffering of equipment end HID bluetooth module, and controls to send；
Equipment end HID bluetooth module, for the signal coming from equipment end audio collecting device that equipment end controller buffers is sent, or the data that Receiving Host end HID bluetooth module sends；
As it is shown on figure 3, described host side includes:
Host side audio collecting device, is used for gathering voice signal；
Host side audio codec, for carrying out analog/digital conversion or D/A switch by voice signal；
Host-side controller, for coming from host side audio collecting device or the data buffering of host side HID bluetooth module, and controls to send；
Host side HID bluetooth module, for being sent by the signal coming from host side audio collecting device that host-side controller buffers, or receives the data that equipment end HID bluetooth module sends.
When communicating pair uses device transmission of speech signals based on HID Bluetooth communication, performing the step in embodiment one or embodiment two, therefore not to repeat here.
As one preferred embodiment, due to HID bluetooth module data transmission instability, vacant in order to prevent receiving terminal data buffer zone from occurring, speech play disruption, and when preventing data buffer zone, phonetic incepting side full, if voice sender continues to cause loss of data if two-forty sends, also include flow-control module, data volume for monitoring data buffer zone, phonetic incepting side in real time, and according to the data volume of data buffer zone, phonetic incepting side, produce control command to send to voice sender, voice sender adjusts the transfer rate sending data according to control command.Concrete adjustment mode can perform step S5 in embodiment one or embodiment two.Owing to voice signal can be transmitted in both directions, therefore, host side and equipment end the most both can be as phonetic incepting sides, it is also possible to as voice sender.
In order to played out by the voice signal received, described host side and/or equipment end also include audio playing apparatus, for playing the voice signal that the other side sends.
Host side also includes button and/or sensor inputs, is used for gathering outside input instruction.
Certainly; described above is not limitation of the present invention; the present invention is also not limited to the example above, change that those skilled in the art are made in the essential scope of the present invention, retrofits, adds or replaces, and also should belong to protection scope of the present invention.
Claims (8)
1. one kind based on HID bluetooth module voice transmission method, it is characterised in that includes equipment end and the host side being carried out two-way voice signals transmission by HID bluetooth module, comprises the following steps:
(1), equipment end gather voice signal, and described voice signal is carried out A/D conversion, the voice signal of simulation is converted into digital signal；
(2), conversion after digital signal after equipment end data buffer zone buffers,
Sent by equipment end HID bluetooth module；
(3), host side receives voice digital signal by host side HID bluetooth module, and sends and buffer to host side data buffer zone；
(4), host side received data is buffered to account for the ratio of data buffer zone gross space when being T1, received data in data buffer zone is carried out D/A conversion, is converted into the voice signal of simulation and plays, wherein, T1 for setting threshold value,
(5), flow-control module monitor the data volume of host side data buffer zone in real time, and according to the data volume of host side data buffer zone, produce control command and send to equipment end, equipment end adjusts the data volume sent according to control command；
Described host side sends voice signal to equipment end simultaneously, and the step that its transmitting voice signal step sends voice signal with equipment end to host side is consistent.
The most according to claim 1 based on HID bluetooth module voice transmission method, it is characterised in that in described step (5), also to include:
Flow-control module judges that whether the data of host side data buffer zone account for ratio T of data buffer zone gross space more than T1+ △ t1, if, then producing control command to send to equipment end, equipment end reduces the data volume sent according to control command, and wherein △ t1 is the upper limit deviation allowing to exceed.
The most according to claim 2 based on HID bluetooth module voice transmission method, it is characterised in that in described step (5), also to include:
Flow-control module judges that whether the data of data buffer zone account for ratio T of data buffer zone gross space less than T1-△ t2, if, then producing control command to send to equipment end, the data volume that equipment end sends according to control command increase, wherein △ t2 is the lower limit deviation allowing to exceed.
The most according to claim 3 based on HID bluetooth module voice transmission method, it is characterised in that the mode of data volume that described minimizing sends or the data volume that increase sends is respectively and reduces or increase message transmission rate.
5. according to described in any one of claim 1-4 based on HID bluetooth module voice transmission method, it is characterised in that described data buffer zone and/or receiving terminal data buffer zone are circular buffer.
6. a HID blue tooth voice communicator, it is characterised in that
Including being carried out equipment end and the host side of two-way voice signals transmission by HID bluetooth module,
Wherein, described equipment end includes:
Equipment end audio collecting device, is used for gathering voice signal；
Equipment end audio codec, for carrying out analog/digital conversion or D/A switch by voice signal；
Equipment end controller, for coming from equipment end audio collecting device or the data buffering of equipment end HID bluetooth module, and controls to send；
Equipment end HID bluetooth module, for the signal coming from equipment end audio collecting device that equipment end controller buffers is sent, or the data that Receiving Host end HID bluetooth module sends；
Described host side includes:
Host side audio collecting device, is used for gathering voice signal；
Host side audio codec, for carrying out analog/digital conversion or D/A switch by voice signal；
Host-side controller, for coming from host side audio collecting device or the data buffering of host side HID bluetooth module, and controls to send；
Host side HID bluetooth module, for being sent by the signal coming from host side audio collecting device that host-side controller buffers, or receives the data that equipment end HID bluetooth module sends；
Flow-control module, for the data volume of monitoring host side data buffer zone in real time, and according to the data volume of host side data buffer zone, produces control command and sends to equipment end, and equipment end adjusts the data volume sent according to control command.
HID blue tooth voice communicator the most according to claim 6, it is characterised in that described host side and/or equipment end also include audio playing apparatus, for playing the voice signal that the other side sends.
HID blue tooth voice communicator the most according to claim 7, it is characterised in that described host side also includes button and/or sensor inputs.
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| CN107786317A (en) * | 2016-08-31 | 2018-03-09 | 乐视汽车（北京）有限公司 | A kind of noise reduction data transmission method and equipment |
| CN108271144B (en) * | 2018-03-23 | 2023-12-19 | 杜宁 | Bluetooth device and system for carrying out data bidirectional mutual transmission with terminal |
| JP2019176707A (en) * | 2018-03-29 | 2019-10-10 | Tdk株式会社 | Wireless power transmission device and wireless power transmission system |
| CN109039390B (en) * | 2018-09-14 | 2021-04-27 | 深圳市追风马科技有限公司 | Method for Bluetooth bidirectional transmission of voice data |
| CN111385775A (en) * | 2018-12-28 | 2020-07-07 | 盛微先进科技股份有限公司 | Wireless transmission system and method thereof |
| CN112969169A (en) * | 2021-05-19 | 2021-06-15 | 北京百瑞互联技术有限公司 | Low-power-consumption Bluetooth communication flow control method, system, storage medium and equipment |
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| C06 | Publication | ||
| PB01 | Publication | ||
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