CN106601262A - High definition Bluetooth audio frequency transmitting and receiving terminal and communication system - Google Patents

High definition Bluetooth audio frequency transmitting and receiving terminal and communication system Download PDF

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Publication number
CN106601262A
CN106601262A CN201611162976.4A CN201611162976A CN106601262A CN 106601262 A CN106601262 A CN 106601262A CN 201611162976 A CN201611162976 A CN 201611162976A CN 106601262 A CN106601262 A CN 106601262A
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CN
China
Prior art keywords
high definition
terminal
audio frequency
bluetooth audio
frequency transceiver
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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.)
Pending
Application number
CN201611162976.4A
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Chinese (zh)
Inventor
张德明
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BEIJING SAIBIN TECHNOLOGY Co Ltd
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BEIJING SAIBIN TECHNOLOGY Co Ltd
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Priority to CN201611162976.4A priority Critical patent/CN106601262A/en
Publication of CN106601262A publication Critical patent/CN106601262A/en
Pending legal-status Critical Current

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    • GPHYSICS
    • G10MUSICAL INSTRUMENTS; ACOUSTICS
    • G10LSPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
    • G10L19/00Speech 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
    • G10L19/04Speech 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
    • G10L19/16Vocoder architecture
    • G10L19/167Audio streaming, i.e. formatting and decoding of an encoded audio signal representation into a data stream for transmission or storage purposes
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L61/00Network arrangements, protocols or services for addressing or naming
    • H04L61/45Network directories; Name-to-address mapping
    • H04L61/4535Network directories; Name-to-address mapping using an address exchange platform which sets up a session between two nodes, e.g. rendezvous servers, session initiation protocols [SIP] registrars or H.323 gatekeepers
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00Network arrangements or protocols for supporting network services or applications
    • H04L67/14Session management
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M7/00Arrangements for interconnection between switching centres
    • H04M7/006Networks other than PSTN/ISDN providing telephone service, e.g. Voice over Internet Protocol (VoIP), including next generation networks with a packet-switched transport layer
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W4/00Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/80Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Computational Linguistics (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 provides a high definition Bluetooth audio frequency transmitting and receiving terminal (1) which comprises at least one speaker (11), at least one microphone (12), and a high definition audio transceiver unit (13). The high definition audio transceiver unit (13) is connected to the speaker (11) and the microphone (12) and is wirelessly connected to an external terminal (2) in a Bluetooth mode. The high definition audio transceiver unit (13) receives the signal captured by the microphone (12), transmits the signal to the external terminal (2) in an uplink transmission way, receives the downlink audio signal sent by the external terminal (2), and forwards the signal to the speaker (11) for replaying. The high definition Bluetooth audio frequency transmitting and receiving terminal is characterized in that a Bluetooth RFCOMM channel is used to transmit the signal captured by the microphone to the external terminal (2) in an uplink transmission way, and full band encoding is employed by an encoding and decoding mode. Through the transmission mode, the use experience of a user can be greatly enhanced, and the requirement of high-quality audio communication can be satisfied.

Description

A kind of high definition Bluetooth audio frequency transceiver terminal and communication system
Technical field
The invention belongs to electroacoustic field, more particularly to a kind of high definition Bluetooth audio frequency transceiver terminal and communication system.
Background technology
As the development of digital wireless audio transmission technology, Bluetooth audio device are widely used, also go out in prior art Show a kind of Bluetooth audio device that can be used for hand-free call, can reset from the Bluetooth audio signals of mobile terminal, it is also possible to The user speech bluetooth approach for receiving is sent back into mobile terminal, so as to realize the bluetooth transmitted in both directions of audio signal;So And, Bluetooth audio device of the prior art can only transmit the monophonic of 8K sample rates when the uplink of audio signal is carried out Audio signal, has been difficult to meet the demand of high definition call.
The content of the invention
In order to overcome the defect of prior art, the present invention to propose a kind of high definition Bluetooth audio frequency transceiver terminal and communication system, Cause the transceiver terminal carry out the audio signal up-downgoing of multichannel, Whole frequency band by high definition Bluetooth audio frequency Transmission Transmission, greatly promotes user's use feeling, and can meet the demand to high quality audio communication.
Propose a kind of high definition Bluetooth audio frequency transceiver terminal, including at least one speaker, at least one microphone, a high definition Audio frequency Transmit-Receive Unit, high definition audio Transmit-Receive Unit are connected with speaker and microphone, its also with exterior terminal with bluetooth approach without Line connects, and the high definition audio Transmit-Receive Unit receives the signal of microphone pickup, and uplink is to exterior terminal, and receives outside The downstream tones signal that terminal sends, forwards it to speaker and is reset;It is characterised by, will using blue tooth RFCOMM passage The signal uplink of mike pickup is transmitted to exterior terminal, and code encoding/decoding mode is encoded using Whole frequency band, wherein Whole frequency band coding staff Formula includes one of SBC, OPUS, Apt-X, AAC.Further, described high definition audio Transmit-Receive Unit provides SDP services, in SDP Service describing is with the addition of in service, core is to which depict UUID and RFCOMM passages;During use, high definition audio is received and dispatched Unit is matched with exterior terminal;After successful matching, set up based on RFCOMM passages by high definition audio Transmit-Receive Unit SOCKET connects;After connection establishment, then RFCOMM can be passed through by high definition audio Transmit-Receive Unit based on the SOCKET connections set up Passage carries out the transmission of voice data, for ANDROID or PC systems, can be based only upon described UUID and RFCOMM Path Setups play the pair relationhip between earphone end and mobile terminal, for IOS systems, are then received in high definition audio Pairing is set up on the basis of bill unit inherently has HFP/HSP and A2DP services, for ANDROID or PC systems Speech, is directly carried out the transmission of voice data by high definition audio Transmit-Receive Unit by RFCOMM passages, for IOS systems, is needed A verification process is wanted, i.e., on the SOCKET connections based on RFCOMM passages set up, is recognized by IAP1/2 agreements After card, EAP protocol is recycled to carry out the transmission of voice data;Wherein, high definition Bluetooth audio frequency transceiver terminal includes being raised one's voice by multiple The loudspeaker array and/or the microphone array being made up of multiple microphones of device composition.
A kind of communication system is proposed, which includes described high definition Bluetooth audio frequency transceiver terminal, exterior terminal, cloud network, outward Portion's terminal accesses cloud network, wherein, exterior terminal receives the upward signal from high definition Bluetooth audio frequency transceiver terminal and passes through cloud Network is transmitted, also, exterior terminal reception is transmitted to high definition Bluetooth audio frequency transceiver terminal from the signal downlink of cloud network Reset, so as to realize two-way communication;Wherein, VOIP service transmission audio signals are used between exterior terminal and cloud network.
Description of the drawings
Fig. 1 is that the work of the structure and the communication system comprising the terminal of the high definition Bluetooth audio frequency transceiver terminal of the present invention is former Reason block diagram
Specific embodiment
With reference to accompanying drawing, the high definition Bluetooth audio frequency transceiver terminal of the present invention is described in detail.As shown in Figure 1, this Bright high definition Bluetooth audio frequency transceiver terminal 1 includes at least one speaker 11, at least one microphone 12, high definition audio transmitting-receiving Unit 13, high definition audio Transmit-Receive Unit 13 are connected with speaker 11 and microphone 12, its also with exterior terminal 2 with bluetooth approach without Line connects, and the high definition audio Transmit-Receive Unit 13 receives the signal of the pickup of microphone 12, and uplink is to exterior terminal 2, and connects The downstream tones signal that exterior terminal 2 sends is received, speaker 11 is forwarded it to and is reset;Wherein, using blue tooth RFCOMM Passage transmits the signal uplink that mike is picked up to exterior terminal 2, and code encoding/decoding mode is encoded using Whole frequency band.By the coding And transmission means, it is possible to achieve the low delay of uplink, Whole frequency band and channel transmission, greatly promote the fidelity of upward signal Degree;Whole frequency band coded system includes but is not limited to SBC, OPUS, Apt-X, AAC coding.
In specific uplink implementation, firstly, it is necessary to the high definition audio in high definition Bluetooth audio frequency transceiver terminal 1 Transmit-Receive Unit 1 provides SDP services, adds service describing in SDP services, and core is to which depict UUID and RFCOMM to lead to Road;Secondly, high definition audio Transmit-Receive Unit 1 is matched with exterior terminal 2, for ANDROID or PC systems, can be only Pair relationhip between earphone end and mobile terminal is played based on described UUID and RFCOMM Path Setups, for IOS systems For, then it is on the basis of high definition audio Transmit-Receive Unit 1 is inherently serviced with HFP/HSP and A2DP to set up pairing; After successful matching, the SOCKET set up based on RFCOMM passages by high definition audio Transmit-Receive Unit 1 is connected;After connection establishment, For ANDROID or PC systems, then can be passed through by high definition audio Transmit-Receive Unit 1 based on the SOCKET connections set up RFCOMM passages directly carry out the transmission of voice data, for IOS systems, then also need to a verification process, that is, are being built On the vertical SOCKET connections based on RFCOMM passages, after being authenticated by IAP1/2 agreements, EAP protocol is recycled to carry out The transmission of voice data.
For downlink transfer, both can be transmitted using traditional Bluetooth audio frequency host-host protocol, such as A2DP modes, together Sample can also carry out the downlink transfer of audio signal using described RFCOMM passages.
Further, high definition Bluetooth audio frequency transceiver terminal 1 includes multiple speakers 11, its composition loudspeaker array and/or Including multiple microphones 12, microphone array is constituted.
Further, a kind of communication system is proposed, which includes described high definition Bluetooth audio frequency transceiver terminal 1, exterior terminal 2, cloud network 3, exterior terminal 2 access cloud network 3, wherein, exterior terminal 2 is received from high definition Bluetooth audio frequency transceiver terminal 1 Upward signal is simultaneously transmitted by cloud network 3, also, exterior terminal 2 receives paramount from the signal downlink transmission of cloud network 3 Clear Bluetooth audio frequency transceiver terminal 1 is reset, so as to realize two-way communication.
Wherein, serviced using VOIP between exterior terminal 2 and cloud network 3.
High-resolution wireless audio frequency transmission function can be realized using the high definition Bluetooth audio frequency transceiver terminal of the present invention, acoustical signal is lifted Transmission quality.

Claims (10)

1. a kind of high definition Bluetooth audio frequency transceiver terminal (1), including at least one speaker (11), at least one microphone (12), One high definition audio Transmit-Receive Unit (13), high definition audio Transmit-Receive Unit (13) are connected with speaker (11) and microphone (12), and which is also Wirelessly it is connected with bluetooth approach with exterior terminal (2), the high definition audio Transmit-Receive Unit (13) receives what microphone (12) was picked up Signal, uplink to exterior terminal (2), and the downstream tones signal that exterior terminal (2) sends is received, forward it to and raise one's voice Device (11) is reset;It is characterised by, the signal uplink that mike is picked up is transmitted to outside eventually using blue tooth RFCOMM passage End (2), code encoding/decoding mode are encoded using Whole frequency band.
2. high definition Bluetooth audio frequency transceiver terminal (1) as claimed in claim 1, is characterised by, Whole frequency band coded system includes One of SBC, OPUS, Apt-X, AAC.
3. high definition Bluetooth audio frequency transceiver terminal (1) as claimed in claim 1, is characterised by, described high definition audio transmitting-receiving is single First (1) provides SDP services, and service describing is with the addition of in SDP services, and core is to which depict UUID and RFCOMM to lead to Road;During use, high definition audio Transmit-Receive Unit (1) is matched with exterior terminal (2);After successful matching, by high definition audio Transmit-Receive Unit (1) is set up the SOCKET based on RFCOMM passages and is connected;After connection establishment, then can be based on the SOCKET for being set up Connection, carries out the transmission of voice data by high definition audio Transmit-Receive Unit (1) by RFCOMM passages.
4. high definition Bluetooth audio frequency transceiver terminal (1) as claimed in claim 3, is characterised by, for ANDROID or PC systems Speech, can be based only upon described UUID and RFCOMM Path Setups and play the pair relationhip between earphone end and mobile terminal.
5. high definition Bluetooth audio frequency transceiver terminal (1) as claimed in claim 3, is characterised by, for IOS systems, is then Pairing is set up on the basis of high definition audio Transmit-Receive Unit (1) inherently has HFP/HSP and A2DP services.
6. high definition Bluetooth audio frequency transceiver terminal (1) as described in one of claim 3,4, is characterised by, for ANDROID or PC For system, the transmission of voice data is directly carried out by high definition audio Transmit-Receive Unit (1) by RFCOMM passages.
7. high definition Bluetooth audio frequency transceiver terminal (1) as described in one of claim 3,5, is characterised by, for IOS systems Speech, needs a verification process, i.e., on the SOCKET connections based on RFCOMM passages set up, entered by IAP1/2 agreements After row certification, EAP protocol is recycled to carry out the transmission of voice data.
8. high definition Bluetooth audio frequency transceiver terminal (1) as described in one of claim 1-7, is characterised by, high definition Bluetooth audio frequency is received Send out terminal (1) include the loudspeaker array being made up of multiple speakers (11) and/or by multiple microphones (12) constitute it is transaudient Device array.
9. a kind of communication system, which includes high definition Bluetooth audio frequency transceiver terminal (1) described in one of claim 1-8, it is outside eventually Cloud network (3) is accessed at end (2), cloud network (3), exterior terminal (2), wherein, exterior terminal (2) is received from high definition Bluetooth audio frequency The upward signal of transceiver terminal (1) is simultaneously transmitted by cloud network (3), also, exterior terminal (2) is received from cloud network (3) signal downlink is transmitted to high definition Bluetooth audio frequency transceiver terminal (1) to be reset, so as to realize two-way communication.
10. communication system as claimed in claim 9, it is characterised in that use between exterior terminal (2) and cloud network (3) VOIP service transmission audio signals.
CN201611162976.4A 2016-12-15 2016-12-15 High definition Bluetooth audio frequency transmitting and receiving terminal and communication system Pending CN106601262A (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106792449A (en) * 2016-12-15 2017-05-31 北京塞宾科技有限公司 A kind of live network broadcast method based on Bluetooth audio frequency
CN108347716A (en) * 2018-01-15 2018-07-31 恒玄科技(上海)有限公司 A kind of Bluetooth communication system and communication means
CN108924642A (en) * 2018-07-16 2018-11-30 北京达佳互联信息技术有限公司 Stream media live broadcasting method, device and computer equipment and storage medium
CN110113736A (en) * 2019-04-30 2019-08-09 努比亚技术有限公司 Communication control method, communication equipment, system and storage medium
CN110662207A (en) * 2018-07-01 2020-01-07 张德明 High-quality music and voice transmission operation method based on Bluetooth
CN110662206A (en) * 2018-07-01 2020-01-07 张德明 Bluetooth-based high-definition music and voice transmission operation method

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102306447A (en) * 2011-08-08 2012-01-04 威胜集团有限公司 Bluetooth-infrared conversion module and method for reading electric energy meter by using same
CN102474546A (en) * 2009-08-10 2012-05-23 摩托罗拉解决方案公司 Methods and apparatus for communicating a push-to-talk state to a communication device
CN102474545A (en) * 2009-08-10 2012-05-23 摩托罗拉解决方案公司 Priority signaling over a wireless serial communication channel
CN102780513A (en) * 2011-05-13 2012-11-14 希姆通信息技术(上海)有限公司 Mobile terminal and method for realizing Bluetooth communication between mobile terminals
CN103796332A (en) * 2012-10-31 2014-05-14 深圳市云通时代科技开发有限公司 Voice communication method and device
CN103840860A (en) * 2014-02-27 2014-06-04 天地融科技股份有限公司 Bluetooth communication method and device
CN104092825A (en) * 2014-07-07 2014-10-08 深圳市微思客技术有限公司 Bluetooth voice control method and device and intelligent terminal
CN104184499A (en) * 2014-08-19 2014-12-03 酷派软件技术(深圳)有限公司 Bluetooth device control method, device and system
CN106126185A (en) * 2016-08-18 2016-11-16 北京塞宾科技有限公司 A kind of holographic sound field recording communication Apparatus and system based on bluetooth
CN207718805U (en) * 2016-12-15 2018-08-10 北京塞宾科技有限公司 A kind of high definition Bluetooth audio frequency transceiver terminal and communication system

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102474546A (en) * 2009-08-10 2012-05-23 摩托罗拉解决方案公司 Methods and apparatus for communicating a push-to-talk state to a communication device
CN102474545A (en) * 2009-08-10 2012-05-23 摩托罗拉解决方案公司 Priority signaling over a wireless serial communication channel
US20120165062A1 (en) * 2009-08-10 2012-06-28 Motorola Solutions, Inc. Method and apparatus for communicating push-to-talk state to a communication device
CN102780513A (en) * 2011-05-13 2012-11-14 希姆通信息技术(上海)有限公司 Mobile terminal and method for realizing Bluetooth communication between mobile terminals
CN102306447A (en) * 2011-08-08 2012-01-04 威胜集团有限公司 Bluetooth-infrared conversion module and method for reading electric energy meter by using same
CN103796332A (en) * 2012-10-31 2014-05-14 深圳市云通时代科技开发有限公司 Voice communication method and device
CN103840860A (en) * 2014-02-27 2014-06-04 天地融科技股份有限公司 Bluetooth communication method and device
CN104092825A (en) * 2014-07-07 2014-10-08 深圳市微思客技术有限公司 Bluetooth voice control method and device and intelligent terminal
CN104184499A (en) * 2014-08-19 2014-12-03 酷派软件技术(深圳)有限公司 Bluetooth device control method, device and system
CN106126185A (en) * 2016-08-18 2016-11-16 北京塞宾科技有限公司 A kind of holographic sound field recording communication Apparatus and system based on bluetooth
CN207718805U (en) * 2016-12-15 2018-08-10 北京塞宾科技有限公司 A kind of high definition Bluetooth audio frequency transceiver terminal and communication system

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106792449A (en) * 2016-12-15 2017-05-31 北京塞宾科技有限公司 A kind of live network broadcast method based on Bluetooth audio frequency
CN108347716A (en) * 2018-01-15 2018-07-31 恒玄科技(上海)有限公司 A kind of Bluetooth communication system and communication means
CN108347716B (en) * 2018-01-15 2021-08-03 恒玄科技(上海)股份有限公司 Bluetooth communication system and communication method
CN110662207A (en) * 2018-07-01 2020-01-07 张德明 High-quality music and voice transmission operation method based on Bluetooth
CN110662206A (en) * 2018-07-01 2020-01-07 张德明 Bluetooth-based high-definition music and voice transmission operation method
CN110662207B (en) * 2018-07-01 2020-11-20 北京塞宾科技有限公司 High-quality music and voice transmission operation method based on Bluetooth
CN110662206B (en) * 2018-07-01 2021-01-05 北京塞宾科技有限公司 Bluetooth-based high-definition music and voice transmission operation method
CN108924642A (en) * 2018-07-16 2018-11-30 北京达佳互联信息技术有限公司 Stream media live broadcasting method, device and computer equipment and storage medium
CN108924642B (en) * 2018-07-16 2019-08-27 北京达佳互联信息技术有限公司 Stream media live broadcasting method, device and computer equipment and storage medium
CN110113736A (en) * 2019-04-30 2019-08-09 努比亚技术有限公司 Communication control method, communication equipment, system and storage medium

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Application publication date: 20170426