CN104065401A - Voice transmission method based on HID bluetooth module and HID bluetooth voice communication device - Google Patents
Voice transmission method based on HID bluetooth module and HID bluetooth voice communication device Download PDFInfo
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- CN104065401A CN104065401A CN201410288245.9A CN201410288245A CN104065401A CN 104065401 A CN104065401 A CN 104065401A CN 201410288245 A CN201410288245 A CN 201410288245A CN 104065401 A CN104065401 A CN 104065401A
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Abstract
The invention discloses a voice transmission method based on an HID bluetooth module and an HID bluetooth voice communication device. An equipment side and a host side for carrying out bidirectional voice signal transmission through the HID bluetooth module are included. The method comprises the following steps: 1) the equipment side collects voice signals and carries out A/D conversion; 2) the converted signals are buffered at the data buffer area of the equipment side and then are output; 3) the host side receives the voice signals and carries out buffering; and 4) when the host side buffers the received data to the degree that the data occupies T1 proportion of the total space of the data buffer area, the host side carries out D/A conversion and play, and meanwhile, the host side sends voice signals to the equipment side, the voice signal transmission step being consistent with the step where the equipment side sends the voice signals to the host side. According to the voice transmission method based on the HID bluetooth module, voice transmission is realized through the HID bluetooth module, so that the cost is greatly saved; and through flow control, the problem of noise due to unstable transmission rate of the HID bluetooth module in the voice transmission process is solved.
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
Along with the development of Bluetooth technology, adopt Bluetooth technology to carry out data transmission applications more and more extensive, the transmission demand corresponding different according to different application environment, main application at present comprises following several: 1, be integrated with the bluetooth module of human-computer interface device specification (HID), the bluetooth module of this kind of specification is for keyboard, mouse, the designed specifications of periphery product such as game machine controller, utilize human-computer interface device specification, be connected with the computer that has Bluetooth function, and formation Wireless Keyboard or mouse, its transmission general data still can, due to the characteristic of HID, unstable to message transmission rate, be not suitable for carrying out transmitting voice signal, its advantage is that chip cost is low, when meeting blue-teeth data transfer function, can reduce product cost.2, be integrated with the bluetooth module of advanced audio distribution specification (A2DP), this kind of bluetooth module can carry out voice transfer, conventional bluetooth earphone at present, Baffle Box of Bluetooth etc., be all to adopt A2DP bluetooth module, A2DP bluetooth module is high a lot of compared with HID bluetooth module cost.3, be integrated with the bluetooth module of audio-visual Long-distance Control specification (AVRCP), AVRCP bluetooth module and A2DP bluetooth module are the advanced component software specifications being developed with bluetooth privilege group (SIG) formulation standard, by its specification, can carry out multiple multimedia function, therefore, cost equally can be high a lot of compared with HID bluetooth module.
Along with people are to adopting the demand of Bluetooth transmission voice increasing, HID bluetooth equipment at present, as blue Tooth remote controller, bluetooth game paddle etc. also has the demand of voice transmission capabilities, if bluetooth A2DP is applied on HID bluetooth equipment, cost be can increase greatly like this, market competition and the technological progress of product have been unfavorable for.
Summary of the invention
The present invention is not suitable for the technical problem of transmission of speech signals in order to solve existing HID bluetooth module, a kind of HID bluetooth module voice transmission method and HID blue tooth voice communicator are provided.
In order to solve the problems of the technologies described above, the present invention is achieved by the following technical solutions:
One, based on HID bluetooth module voice transmission method, comprises equipment end and the host side of carrying out the transmission of double-directional speech signal by HID bluetooth module, comprises the following steps:
(1), equipment end gathers voice signal, and described voice signal carried out to A/D conversion, and the voice signal of simulation is converted into digital signal;
(2), conversion after digital signal after equipment end data buffer zone is cushioned, sent by equipment end HID bluetooth module;
(3), host side receives voice digital signal by host side HID bluetooth module, and is sent to host side data buffer zone and cushions;
(4), host side is while being T1 by received data buffering to the ratio that accounts for data buffer zone gross space, and the data that receive in data buffer zone are carried out to D/A conversion, converts the voice signal of simulation to and plays, wherein, T1 is setting threshold,
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, step (4) also comprises afterwards:
(5), the data volume of flow-control module Real-Time Monitoring host side data buffer zone, and according to the data volume of host side data buffer zone, produce control command and be sent to equipment end, the equipment end data volume that adjustment is sent according to control command.
Further again, in described step (5), also comprise:
Flow-control module judges whether the ratio T that the data of host side data buffer zone account for data buffer zone gross space is greater than T1+ △ t1, if, produce control command and be sent to equipment end, equipment end reduces the data volume of sending according to control command, and wherein △ t1 allows the upper limit deviation that exceeds.
Further, in described step (5), also comprise:
Flow-control module judges whether the ratio T that the data of data buffer zone account for data buffer zone gross space is less than T1-△ t2, if, produce control command and be sent to equipment end, the equipment end data volume that increase is sent according to control command, wherein △ t2 allows the lower limit deviation that exceeds.
The mode of the data volume that the data volume that preferably, described minimizing is sent or increase are sent 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, the present invention provides a kind of HID blue tooth voice communicator simultaneously, comprises equipment end and the host side of carrying out the transmission of double-directional speech signal by HID bluetooth module,
Wherein, described equipment end comprises:
Equipment end audio collecting device, for gathering voice signal;
Equipment end audio codec, for carrying out mould/number conversion or D/A switch by voice signal;
Equipment end controller, for coming from the data buffering of equipment end audio collecting device or equipment end HID bluetooth module, and controls and sends;
Equipment end HID bluetooth module, for the signal that comes from equipment end audio collecting device of equipment end controller buffering is sent, or the data of Receiving Host end HID bluetooth module transmission;
Described host side comprises:
Host side audio collecting device, for gathering voice signal;
Host side audio codec, for carrying out mould/number conversion or D/A switch by voice signal;
Host-side controller, for coming from the data buffering of host side audio collecting device or host side HID bluetooth module, and controls and sends;
Host side HID bluetooth module, for the signal that comes from host side audio collecting device of host-side controller buffering is sent, or the data of receiving equipment end HID bluetooth module transmission.
Further, also comprise flow-control module, for the data volume of Real-Time Monitoring host side or equipment end data buffer zone, and corresponding generation control command is sent to equipment end or host side respectively.
Further, described host side and/or equipment end also comprise audio playing apparatus, the voice signal sending for playing the other side.
Further again, described host side also comprises button and/or transducer input unit.
Compared with prior art, advantage of the present invention and good effect are: HID bluetooth module voice transmission method of the present invention, realize voice transfer by HID bluetooth module, save greatly cost, by flow control, solve the noise problem of bringing when HID bluetooth module transmission rate is unstable causes voice transfer.
Read by reference to the accompanying drawings after the detailed description of embodiment of the present invention, it is clearer that the other features and advantages of the invention will become.
Brief description of the drawings
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is a kind of embodiment flow chart of HID bluetooth module voice transmission method proposed by the invention;
Fig. 2 is a kind of embodiment block diagram of HID blue tooth voice communicator proposed by the invention;
Fig. 3 is a kind of embodiment block diagram of host side simultaneously with reception and sending function.
Embodiment
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, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiment.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
Embodiment mono-, the present embodiment provides a kind of HID bluetooth module voice transmission method, as shown in Figure 2, comprises equipment end and the host side of carrying out the transmission of double-directional speech signal by HID bluetooth module, as shown in Figure 1, comprises the following steps:
S1, equipment end gather voice signal, and described voice signal is carried out to 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 is cushioned, is sent by equipment end HID bluetooth module;
S3, host side receive voice digital signal by host side HID bluetooth module, and are sent to host side data buffer zone and cushion;
When S4, host side are T1 by received data buffering to the ratio that accounts for data buffer zone gross space, the data that receive in data buffer zone are carried out to D/A conversion, convert the voice signal of simulation to and play, wherein, T1 is setting threshold,
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, cushion by speech data HID bluetooth module being received at receiving terminal, in the time being buffered to setting data size, controlling receiving terminal starts data to carry out D/A conversion and broadcasting, solve the noise problem of bringing when HID bluetooth module transmission rate is unstable causes voice transfer, realize the voice transfer of HID bluetooth module, without integrating in addition A2DP for HID bluetooth module, or adopt the bluetooth module that is integrated with A2DP to substitute, saved greatly cost.
In the time that 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 to 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 is cushioned, is sent by host side HID bluetooth module;
S13, equipment end receive voice digital signal by equipment end HID bluetooth module, and are sent to equipment end data buffer zone and cushion;
When S14, equipment end are T1 by received data buffering to the ratio that accounts for data buffer zone gross space, the data that receive in data buffer zone are carried out to D/A conversion, convert the voice signal of simulation to and play, wherein, T1 is setting threshold.
As one preferred embodiment, because HID bluetooth module transfer of data is unstable, for the data buffer zone that prevents phonetic incepting side occurs vacant, speech play disruption, and the data buffer zone that prevents phonetic incepting side is full, the words that transmitting terminal continues two-forty transmission can cause loss of data, also comprise flow-control module as shown in Figure 2, after step S4, also comprise:
The data volume of S5, flow-control module Real-Time Monitoring host side data buffer zone, and according to the data volume of host side data buffer zone, produce control command and be sent to equipment end, the equipment end data volume that adjustment is sent according to control command.This step is when the step of host side during as phonetic incepting side, when equipment end is during as phonetic incepting side, transmitting voice signal direction should be conversely, also: the data volume of flow-control module real-time watch device end data buffering area, and according to the data volume of equipment end data buffer zone, produce control command and be sent to host side, the equipment end data volume that adjustment is sent according to control command, by this step is set, the data volume of Real-Time Monitoring receiving terminal data buffer zone, according to the size of buffering area available data amount, the transmission rate of transmitting terminal is done to corresponding adjustment, make the data volume of receiving terminal data buffer zone remain on constant level always, both there will not be disruption, also can avoid buffering area to be filled with and cause loss of data.
Embodiment bis-, the present embodiment provides another HID bluetooth module voice transmission method, based on the method for embodiment mono-, has provided a kind of optimal technical scheme of step 5, in described step S5, comprises following sub-step:
Flow-control module judges whether the ratio T that the data of host side data buffer zone account for data buffer zone gross space is greater than T1+ △ t1, if, produce control command and be sent to equipment end, equipment end reduces the data volume of sending according to control command, and wherein △ t1 allows the upper limit deviation that exceeds.
This step is mainly that data buffer zone in order to prevent phonetic incepting side is when full, if the words that voice transmit leg continues to keep original big data quantity to send can cause loss of data, by the upper limit T1+ △ t1 of data volume of data buffer zone, phonetic incepting side is set, when being greater than on this, data volume prescribes a time limit, control voice transmit leg and reduce the data volume of sending, to reduce buffering area by full pressure.
Further, in described step S5, also comprise step:
Flow-control module judges whether the ratio T that the data of data buffer zone account for data buffer zone gross space is less than T1-△ t2, if, produce control command and be sent to equipment end, the equipment end data volume that increase is sent according to control command, wherein △ t2 allows the lower limit deviation that exceeds.
This step is vacant in order to prevent that receiving terminal data buffer zone from occurring, speech play disruption, by the lower limit T1-△ t2 of data volume of receiving terminal data buffer zone is set, when being less than on this, data volume prescribes a time limit, control the data volume that the increase of voice transmit leg is sent, vacant to prevent that buffering area from occurring.
By two sub-steps in the step S5 of the present embodiment, can realize the balance of receiving terminal data input/output (I/O) throughput, make average data transfer rate stable, thereby it is unstable to solve the message transmission rate existing due to HID bluetooth module self, cause transmission of speech signals can have the problem of noise, realized employing HID bluetooth module and realized the transmission of high-quality voice signal.
It should be noted that, the mode that control voice transmit leg reduces or increase the data volume of sending has multiple, in the present embodiment for can with current standard protocol interface, preferably reduce the mode of sending the transmission rate that the transmission rate of data or raising send data respectively by reducing or increase the data volume comprising in transmitting terminal transmission packet.Certainly, also can adopt if desired the transmission frequency of adjusting packet to realize the transmission rate of adjusting data in specific occasion.
In addition, described transmitting terminal data buffer zone and/or receiving terminal data buffer zone are circular buffer.
Embodiment tri-, HID bluetooth module voice transmission method based in embodiment mono-and embodiment bis-, the present embodiment provides a kind of HID blue tooth voice communicator, as shown in Figure 2, comprise equipment end and the host side of carrying out the transmission of double-directional speech signal by HID bluetooth module
Wherein, described equipment end comprises:
Equipment end audio collecting device, for gathering voice signal;
Equipment end audio codec, for carrying out mould/number conversion or D/A switch by voice signal;
Equipment end controller, for coming from the data buffering of equipment end audio collecting device or equipment end HID bluetooth module, and controls and sends;
Equipment end HID bluetooth module, for the signal that comes from equipment end audio collecting device of equipment end controller buffering is sent, or the data of Receiving Host end HID bluetooth module transmission;
As shown in Figure 3, described host side comprises:
Host side audio collecting device, for gathering voice signal;
Host side audio codec, for carrying out mould/number conversion or D/A switch by voice signal;
Host-side controller, for coming from the data buffering of host side audio collecting device or host side HID bluetooth module, and controls and sends;
Host side HID bluetooth module, for the signal that comes from host side audio collecting device of host-side controller buffering is sent, or the data of receiving equipment end HID bluetooth module transmission.
When communicating pair adopts the device transmission of speech signals based on HID Bluetooth communication, carry out the step in embodiment mono-or embodiment bis-, therefore not to repeat here.
As one preferred embodiment, because HID bluetooth module transfer of data is unstable, vacant in order to prevent that receiving terminal data buffer zone from occurring, speech play disruption, and while preventing that data buffer zone, phonetic incepting side is full, if continuing the words of two-forty transmission, voice transmit leg can cause loss of data, also comprise flow-control module, for the data volume of data buffer zone, Real-Time Monitoring phonetic incepting side, and according to the data volume of data buffer zone, phonetic incepting side, produce control command and be sent to voice transmit leg, voice transmit leg according to control command adjustment send the transmission rate of data.Concrete adjustment mode can be carried out the step S5 in embodiment mono-or embodiment bis-.Because voice signal can be transmitted in both directions, therefore, host side and equipment end all both can be used as phonetic incepting side, also can be used as voice transmit leg.
For received voice signal being play, described host side and/or equipment end also comprise audio playing apparatus, the voice signal sending for playing the other side.
Host side also comprises button and/or transducer input unit, for gathering outside input instruction.
Certainly; above-mentioned explanation is not limitation of the present invention; the present invention is also not limited in above-mentioned giving an example, and variation, remodeling, interpolation or replacement that those skilled in the art make in essential scope of the present invention, also should belong to protection scope of the present invention.
Claims (10)
1. based on a HID bluetooth module voice transmission method, it is characterized in that, comprise equipment end and the host side of carrying out the transmission of double-directional speech signal by HID bluetooth module, comprise the following steps:
(1), equipment end gathers voice signal, and described voice signal carried out to A/D conversion, and the voice signal of simulation is converted into digital signal;
(2), conversion after digital signal after equipment end data buffer zone is cushioned, sent by equipment end HID bluetooth module;
(3), host side receives voice digital signal by host side HID bluetooth module, and is sent to host side data buffer zone and cushions;
(4), host side is while being T1 by received data buffering to the ratio that accounts for data buffer zone gross space, and the data that receive in data buffer zone are carried out to D/A conversion, converts the voice signal of simulation to and plays, wherein, T1 is setting threshold,
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.
2. according to claim 1ly it is characterized in that based on HID bluetooth module voice transmission method, step (4) also comprises afterwards:
(5), the data volume of flow-control module Real-Time Monitoring host side data buffer zone, and according to the data volume of host side data buffer zone, produce control command and be sent to equipment end, the equipment end data volume that adjustment is sent according to control command.
3. according to claim 2ly it is characterized in that based on HID bluetooth module voice transmission method, in described step (5), also comprise:
Flow-control module judges whether the ratio T that the data of host side data buffer zone account for data buffer zone gross space is greater than T1+ △ t1, if, produce control command and be sent to equipment end, equipment end reduces the data volume of sending according to control command, and wherein △ t1 allows the upper limit deviation that exceeds.
4. according to claim 3ly it is characterized in that based on HID bluetooth module voice transmission method, in described step (5), also comprise:
Flow-control module judges whether the ratio T that the data of data buffer zone account for data buffer zone gross space is less than T1-△ t2, if, produce control command and be sent to equipment end, the equipment end data volume that increase is sent according to control command, wherein △ t2 allows the lower limit deviation that exceeds.
5. according to claim 4ly it is characterized in that based on HID bluetooth module voice transmission method, the mode of the data volume that the data volume that described minimizing is sent or increase are sent is respectively and reduces or increase message transmission rate.
According to described in claim 1-5 any one based on HID bluetooth module voice transmission method, it is characterized in that, described data buffer zone and/or receiving terminal data buffer zone are circular buffer.
7. a HID blue tooth voice communicator, is characterized in that,
Comprise equipment end and the host side of carrying out the transmission of double-directional speech signal by HID bluetooth module,
Wherein, described equipment end comprises:
Equipment end audio collecting device, for gathering voice signal;
Equipment end audio codec, for carrying out mould/number conversion or D/A switch by voice signal;
Equipment end controller, for coming from the data buffering of equipment end audio collecting device or equipment end HID bluetooth module, and controls and sends;
Equipment end HID bluetooth module, for the signal that comes from equipment end audio collecting device of equipment end controller buffering is sent, or the data of Receiving Host end HID bluetooth module transmission;
Described host side comprises:
Host side audio collecting device, for gathering voice signal;
Host side audio codec, for carrying out mould/number conversion or D/A switch by voice signal;
Host-side controller, for coming from the data buffering of host side audio collecting device or host side HID bluetooth module, and controls and sends;
Host side HID bluetooth module, for the signal that comes from host side audio collecting device of host-side controller buffering is sent, or the data of receiving equipment end HID bluetooth module transmission.
8. HID blue tooth voice communicator according to claim 9, it is characterized in that, also comprise flow-control module, for the data volume of Real-Time Monitoring host side or equipment end data buffer zone, and corresponding generation control command is sent to equipment end or host side respectively.
9. HID blue tooth voice communicator according to claim 8, is characterized in that, described host side and/or equipment end also comprise audio playing apparatus, the voice signal sending for playing the other side.
10. HID blue tooth voice communicator according to claim 9, is characterized in that, described host side also comprises button and/or transducer input unit.
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| 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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