3 lllllllllllllllllllllllllllllllllIllllllllllllllllll
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`(11)
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`EP 3 276 905 A1
`
`{amt
`European
`patent Ottico
`Office eurepéen 3
`des brevets
`
`(19>
`
`(12)
`
`EUROPEAN PATENT APPLICATION
`
`(43) Date of publication:
`31.01.2018 BuIIetIn 2018/05
`
`(51) Int Cl.:
`H04L 29I06 (2005-00
`
`Ho4w 41000012101)
`
`(21) Application number: 161809405
`
`(22) Date of filing: 25.07.2016
`
`(84) Designated Contracting States:
`AL AT BE BG CH CY CZ DE DK EE ES Fl FR GB
`GR HR HU lE IS IT Ll LT LU LV MC MK MT NL NO
`Pl. PT RO RS SE SI SK SM TR
`
`Designated Extension States:
`BA ME
`
`Designated Validation States:
`MA MD
`
`(71) Applicant: GN Audio AIS
`2750 Ballerup (DK)
`
`(72) Inventor: KAMSTRUP, Lisa Rorbaek
`DK-2750 Ballerup (DK)
`
`(74) Representative: Zacco Denmark AIS
`Ame Jacobsens Allé 15
`
`2300 Copenhagen S (UK)
`
`
`
`(54)
`
`SYSTEM FOR AUDIO COMMUNICATION USING LTE
`
`Disclosed are a method, a first electronic audio
`(57)
`device, and a system comprising at least a first electronic
`audio device and a second electronic audio device for
`
`performing audio communication between at least the
`first electronic audio device and the second electronic
`
`audio device. The electronic audio devices are config—
`ured for wireless communication via a wireless connec-
`
`tion. The electronic audio devices are configured to trans-
`mit and/or receive audio directly between them via the
`wireless connection. The electronic audio devices com—
`
`prise a speaker and a microphone. At least the first elec—
`tronic audio device is configured to operate and/or com-
`
`municate in at least three modes for controlling audio to
`be transmitted from the first electronic audio device to
`
`the speaker of the second electronic audio device: a first
`mode where the transmitted audio is, such as solely, an
`output from the speaker in the first electronic audio de—
`vice; a second mode where the transmitted audio is, such
`as solely, an input from the microphone in the first elec-
`tronic audio device; a third mode where the transmitted
`audio is, such as both, an output from the speaker of the
`first electronic audio device and an input from the micro-
`phone of the first electronic audio device.
`
` 2
`
`Fig. I
`
`Printed by Jouve, 75001 PARlS (FR)
`
`EP3276905A1
`
`

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`
`EP 3 276 905 A1
`
`2
`
`Description
`
`FlELD
`
`{0001} The present disclosure relates to a method, a
`first electronic audio device and a system comprising at
`least a first electronic audio device and a second elec-
`
`tronic audio device for performing audio communication
`between at least the first electronic audio device and the
`second electronic audio device. The electronic audio de-
`
`vices are configured for wireless communication via a
`wireless connection. The electronic audio devices are
`
`configured to transmit and/or receive audio directly be—
`tween them via the wireless connection.
`
`BACKG ROUND
`
`{0002} U82013117693A discloses a method compris—
`ing receiving, at a first media output device, streaming
`media from a media source device, receiving, at the first
`media output device, a command by motion or voice to
`share the streaming media with a second media output
`device, and initiating, by the first media output device,
`sharing of the streaming media between the first media
`output device and the second media output device.
`{0003} U82015105022A discloses a multitasking sys—
`tem of a Bluetooth headset, which enables users to talk
`with each other in a telephone call while atthe same time
`enjoying media content played by an external Bluetooth
`device. The multitasking system of a Bluetooth headset
`includes: a first Bluetooth headset worn by a first user,
`and a second Bluetooth headset worn by a second user.
`The first Bluetooth headset is configured to include a first
`Bluetooth module, and a second Bluetooth module that
`is connected to the first Bluetooth module. The second
`
`Bluetooth headset is configured to include a third Blue—
`tooth module that is paired with the first Bluetooth mod-
`ule, and a fourth Bluetooth module that is connected to
`the third Bluetooth module.
`
`SUMMARY
`
`{0004} There is a need for an improved system for au-
`dio communication between electronic audio devices,
`such as headsets, earphones and/or Speakerphones,
`which allows for a variety of ways and modes to transmit
`audio between the devices.
`
`{0005} Disclosed is a system comprising at least a first
`electronic audio device and a second electronic audio
`
`device for performing audio communication between at
`leastthe firstelectronic audio device and the second elec-
`tronic audio device. The electronic audio devices are con-
`
`figured for wireless communication via a wireless con—
`nection. The electronic audio devices are configured to
`transmit and/or receive audio directly between them via
`the wireless connection. The electronic audio devices
`
`comprise a speaker and a microphone. At least the first
`electronic audio device is configured to operate and/or
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`communicate in at leastthree modes for controlling audio
`to be transmitted from the first electronic audio device to
`
`the speaker of the second electronic audio device: a first
`mode where the transmitted audio is, such as solely, an
`output from the speaker in the first electronic audio de-
`vice; a second mode where the transmitted audio is. such
`as solely, an input from the microphone in the first elec—
`tronic audio device; a third mode where the transmitted
`audio is, such as both, an output from the speaker of the
`first electronic audio device and an input from the micro—
`phone of the first electronic audio device.
`{0006] Also disclosed is a first electronic audio device
`for performing audio communication with a second elec-
`tronic audio device. The first electronic audio device is
`
`configured for wireless communication with the second
`electronic audio device via a wireless connection. The
`
`first electronic audio device is configured to transmit
`and/or receive audio directly to/from the second electron-
`ic audio device via the wireless connection. The first elec-
`
`tronic audio device comprises a speaker and a micro-
`phone. The first electronic audio device is configured to
`operate and/or communicate in at least three modes for
`controlling audio to be transmitted from the first electronic
`audio device to a speaker of the second electronic audio
`device: a first mode where the transmitted audio is, such
`as solely, an output from the speaker in the first electronic
`audio device; a second mode where the transmitted au-
`dio is, such as solely, an input from the microphone in
`the first electronic audio device; a third mode where the
`transmitted audio is, such as both, an output from the
`speaker of the first electronic audio device and an input
`from the microphone of the first electronic audio device.
`{0007] Also disclosed is a method for performing audio
`communication between at least a first electronic audio
`device and a second electronic audio device. The elec-
`
`tronic audio devices comprise a speaker and a micro-
`phone. The method comprises establishing a wireless
`connection between at least the first electronic audio de—
`
`vice and the second electronic audio device for perform—
`ing wireless communication. The electronic audio devic-
`es are configured to transmit and/or receive audio directly
`between them via the wireless connection. The method
`
`comprises selecting a mode, in which at least the first
`electronic audio device is configured to operate and/or
`communicate in, from at least three modes for controlling
`audio to be transmitted from the first electronic audio de—
`
`vice to the speaker of the second electronic audio device.
`The modes are a first mode where the transmitted audio
`
`is, such as solely, an output from the speaker in the first
`electronic audio device; a second mode where the trans-
`mitted audio is, such as solely, an input from the micro-
`phone in the first electronic audio device; a third mode
`where the transmitted audio is, such as both, an output
`from the speaker of the first electronic audio device and
`an input from the microphone of the first electronic audio
`device. The method comprises transmitting audio from
`the first electronic audio device to the speaker of the sec—
`ond electronic audio device in accordance with the se-
`
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`EP 3 276 905 A1
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`4
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`lected mode.
`
`lt is an advantage that the first and the second
`{0008]
`electronic audio devices are configured to communicate
`wirelessly to transmit audio without using telephone op—
`erators.
`
`lt is an advantage that the electronic audio de-
`{0009]
`vices are configured to operate in different modes for
`controlling the audio to be transmitted, as this enables
`the user of the first electronic audio device to decide and
`control which audio from his/hers electronic audio device
`he/she wishes to share with the user of the second elec-
`tronic audio device.
`
`it is an advantage that the first and the second
`{0010]
`electronic audio devices are configured to transmit audio
`both on long distances and on short distances. Thus
`when the first and the second electronic audio devices
`
`are arranged a long distances from each other they may
`transmit audio to each other using a long distance tele—
`communications technology/network, such as LTE, 4G,
`3G, ZG etc. Thus it is an advantage that the users of the
`first and second electronic audio device may transmit
`audio to each other when they are a long distance from
`each other, such as in different ends ofa large building,
`such as in two different buildings, such as in different
`geographical areas/locations, such as in different cities,
`such as in different regions of a country, such as in dif-
`ferent countries etc.
`
`lt is an advantage that when the first and the
`{0011]
`second electronic audio devices are arranged a short
`distances from each other, they may transmit audio to
`each other using a short distance telecommunications
`technology/network, such as Wi-Fi, LAN, Bluetooth (BT),
`Bluetooth Low Energy (BLE) etc. A short distance may
`be such as lessthan 10 meters, less than 100 meters etc.
`{0012]
`it is an advantage that the method and the elec—
`tronic audio devices provide a security arrangement or
`solution for controlling the audio to be transmitted. The
`first and the second electronic audio device may perform
`an identification exchange and verification, e.g. by ex-
`changing and verifying electronic access keys, before
`the audio transmission between the two electronic audio
`devices.
`
`{0013] The first electronic audio device and/or the sec-
`ond electronic audio device may be headsets, ear-
`phones, loudspeakers, and/or Speakerphones.
`{0014] The wireless communication may use or may
`be a mobile telecommunications technology, such as a
`telecommunications technology for communicating over
`long distances or long ranges, such as using the Long—
`Term Evolution (LTE) standard, and/or 46, 3G, and/or
`2G standard. The LTE and/or 46, 3G, 26 may be used
`together with a cloud service.
`{0015] A long distance telecommunications technolo—
`gy may be configured for telecommunication over more
`than 10 meters, over more than 100 meters, over more
`than 1000 meters, over more than 10 kilometre, over
`more than 100 kilometres, over more than 1000 kilome-
`tres, over more than 30000 kilometres, over more 100000
`
`kilometres. A long distance telecommunications technol—
`ogy may be configured for telecommunication over an
`unlimited distance, such as covering the whole Earth.
`{0016] The wireless communication may use or may
`be a telecommunications technology for communicating
`over short distances or short ranges, such as using the
`Wi-Fi standard, LAN, Bluetooth (BT), and/or Bluetooth
`Low Energy (BLE) etc. A short distance telecommunica-
`tions technology may be configured for telecommunica-
`tion under less than 1000 meters, under less than 500
`meters, under less than 100 meters, under less than 50
`meters, under less than 10 meters, under less than 5
`meters, under less than 1 meter.
`{0017] The wireless connection may be via the tele-
`communications technology, e.g. via long distance com—
`munications, such as LTE standard, 46, 3G, 2G etc.,
`and/or via short distance communications, such as Wi-
`Fi, LAN, BT, BLE etc.
`{0018] Audio communication is communication contig—
`ured for transmitting and/or receiving audio. Audio may
`be sound, voice, speech, speak, media content such as
`streamed audio, such as radio, music, TV, video, phone
`conversations etc.
`
`{0019] The electronic audio devices are configured to
`transmit and/or receive audio directly between them via
`thewireless connection. To transmit and/or receive audio
`
`directly may mean not using a mobile operator or tele-
`phone operator, it may mean that the wireless commu—
`nication is "on top" of a mobile operator or telephone
`operator bound communication. Thus the transmission
`of audio may be independent of softphone client services
`and/or mobile phone operators. To transmit and/or re-
`ceive audio directly can be that it is a second layer audio
`stream which may be operated and/or controlled in uni—
`son with the mobile and/or telephone operator. in case
`the electronic audio devices are so-called Jabra® (trade-
`mark) headsets, the mobile or telephone operator may
`give Jabra access to an extra or second overlay audio
`line, and Jabra then for instance controls what type or
`part of the audio to be sent and when. Different ways to
`interplay, compete, and/or cooperate between the sys-
`tem provider, e.g. Jabra, and/or electronic audio devices,
`e.g. Jabra headsets, on one side and the mobile operator
`and/or telephone operator on the other side.
`{0020] The electronic audio devices comprise a speak-
`er and a microphone. Thus each electronic audio device
`may comprise a speaker or an output transducer or a
`receiver or a loudspeaker. Thus each electronic audio
`device may comprise a microphone or an input transduc-
`er. The speaker is configured for transmitting audio to
`the ear of the user of the electronic audio device. The
`
`microphone is configured for capturing the voice of the
`user of the electronic audio device.
`in some embodi-
`
`ments the first electronic audio device comprises a
`speaker and a microphone, and the second electronic
`audio device comprises a speaker, but no microphone.
`{0021] The first and second electronic audio device
`may comprise a wireless communication unitfor enabling
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`EP 3 276 905 A1
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`6
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`the wireless communication. Each wireless communica-
`
`tion unit may comprise a transmitter, a receiver, a trans-
`mitter-receiver pair, such as a transceiver, a radio unit
`etc.
`
`{0022] At ieast the first eiectronic audio device is con-
`figured to operate and/or communicate in at ieast three
`modes for controlling audio to be transmitted and/or re-
`ceived from the first electronic audio device to the speak-
`er of the second electronic audio device. Controlling au—
`dio to be transmitted and/ received may be controlling
`the source ofthe audio or where the audio is coming from
`and/or controiiing the target of the audio or where the
`audio is sent to.
`
`in the first mode the transmitted audio is an out-
`{0023]
`put from the speaker in the first electronic audio device,
`such as solely an output from the speaker of the first
`eiectronic audio device. By soleiy is meant only and ex-
`clusiveiy, thus the transmitted audio may only be the out-
`put from the speaker in the first electronic audio device,
`not the input from the microphone in the first electronic
`audio device for exampie.
`{0024]
`in the second mode the transmitted audio is an
`input from the microphone in the first electronic audio
`device. such as such as soieiy an input from the micro-
`phone of the first eiectronic audio device. By solely is
`meant only and exclusively, thus the transmitted audio
`may only be the input from the microphone in the first
`eiectronic audio device, not the output from the speaker
`in the first electronic audio device for exampie.
`{0025]
`in the third mode the transmitted audio is/are
`an output from the speaker of the first eiectronic audio
`device and an input from the microphone ofthe first elec-
`tronic audio device, such as both an output from the
`speaker of the first electronic audio device and an input
`from the microphone of the first electronic audio device.
`By both is meant that the transmitted audio is transmitted
`from the speaker and from the microphone of the first
`eiectronic audio device at the same time, such as simul-
`taneously, such as paraiiei, such as serial, such as using
`the same channel, such as using differentchanneis, such
`as the audio sent at the same time point from the first
`eiectronic audio device is arriving at the same time point
`in the speaker ofthe second electronic audio device, such
`as substantiatty simultaneousiy where the audio is arriv-
`ing at almost the same time point in the speaker of the
`second eiectronic audio device as sentfrom the first eiec-
`
`tronic audio device but with a deiay, such as a deiay of
`milliseconds or seconds, such as few second.
`{0026] At least the second eiectronic audio device is
`configured to operate and/or communicate in at least
`three modes for controlling audio to be transmitted from
`the second eiectronic audio device to the speaker of the
`first electronic audio device. The three modes may be: a
`first mode where the transmitted audio is, such as solely,
`an outputfrom the speaker in the second electronic audio
`device; a second mode where the transmitted audio is,
`such as solely, an input from the microphone in the sec-
`ond eiectronic audio device; a third mode where the
`
`transmitted audio is, such as both, an output from the
`speaker of the second electronic audio device and an
`input from the microphone ofthe second electronic audio
`device.
`
`{0027] More electronic devices may be part of the sys-
`tem, such as a third electronic audio device, and a fourth
`electronic device. All the eiectronic audio devices may
`be configured to transmit and/0r receive audio between
`each other.
`
`{0028] The three modes may be the same modes or
`similar modes forthe firstand the second electronic audio
`device. If a third and/or fourth and/or more electronic au-
`
`dio device are also part of the system, the three modes
`may be the same modes or similar modes for all the eiec—
`tronic audio devices.
`
`{0029] The first mode may be suitabie for transmitting
`streamed audio, such as music or media from a Biuetooth
`profiie called Advanced Audio Distribution Profile
`(AZDP), from the speaker ofthe first electronic audio de—
`vice to the speaker of the second electronic audio device.
`The Advanced Audio Distribution Profile (A2DP) is a pro—
`file which defines how multimedia audio can be streamed
`from one device to another over a Biuetooth connection,
`also cailed Bluetooth Audio Streaming. For example, mu—
`sic can be streamed from a mobile phone, to a wireless
`headset, hearing aid/cochlear implant streamer, car au-
`dio, or from a laptop/desktop to a wireless headset. Al-
`ternatively and/or additionally, voice can be streamed
`from a microphone device to a recorder on a PC. The
`Audio/Video Remote Control Profile (AVRCP) may be
`used in conjunction with A2DP for remote control on de-
`vices such as headphones, car audio systems, or stand-
`alone speaker units. These systems may also implement
`Headset (HSP) or Hands-Free (HFP) profiles for tele—
`phone calls, which may be used separately. Each AZDP
`service, of possibly many, is designed to uni-directionaily
`transfer an audio stream in up to 2 channel stereo, either
`to orfrom the Bluetooth host. This profile relies on AVDTP
`and GAVDP. lt inciudes mandatory support for the tow—
`complexity SBC codec (not to be confused with Blue-
`tooth’s voice—signai codecs such as CVSDM), and sup-
`ports optionaily MPEG—1 Part 3/MPEG-2 Part 3 (MP2
`and MP3), MPEG-2 Part 7/MPEG-4 Part3 (AAC and HE—
`AAC), and ATRAC, and is extensible to support manu-
`facturer-defined codecs, such as ath.
`{0030] Thus it is an advantage that audio streamed via
`Biuetooth from eg. a mobile phone to the speaker of the
`first electronic audio device can be transmitted to the
`
`ln this
`speaker of the second electronic audio device.
`way the user ofthe first eiectronic audio device can share
`his/her audio from his/her mobile phone with the user of
`the second electronic audio device. The audio from the
`
`mobile phone may be music from a music streaming serv-
`ice, such as Spotify®. Thus the user of the second eiec-
`tronic audio device does not need to have and pay for
`his/her own access to the streaming service, he/she can
`listen to the music from the streaming service via the
`access to the streaming service of the user of the first
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`EP 3 276 905 A1
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`electronic audio device. The user of the first electronic
`audio device and the user of the second electronic audio
`
`device do not have to be close to each other physically
`in order for this transmission to work, as the wireless
`communication may be a long distance telecommunica-
`tions standard, such as LTE or4G, thus thefirstelectronic
`audio device and the second electronic audio device can
`
`be in two different parts of the world and still share audio.
`{0031} The second mode may be suitable for transmit—
`ting the audio from the surroundings captured by the mi-
`crophone of the first electronic audio device to the speak-
`er of the second electronic audio device. This is an ad-
`
`vantage if e.g. the user of the first electronic audio device
`is hearing impaired, then by transmitting the audio input
`from the hearing impaired persons electronic audio de-
`vice, the first electronic audio device, to the speaker of
`the second electronic audio device, then the user of the
`second electronic audio device can repeat or explain with
`his/her voice what the microphone input in the first elec-
`tronic audio device is, and the voice or speak of the user
`of the second electronic audio device can then be proc-
`essed in a "speech to text“ program and presented to the
`user of the first electronic audio device as text.
`
`{0032} The third mode may be suitable for sharing a
`phone conversation between the user of the first elec-
`tronic audio device and a far-end caller with the user of
`the second electronic audio device as the transmitted
`
`audio is both an output from the speaker of the first elec-
`tronic audio device and an input from the microphone of
`the first electronic audio device. Thus the user of the sec-
`ond electronic audio device can both hear what the far—
`
`end caller says, as this is transmitted from the speaker
`of the first electronic audio device, and hear what the
`user of the first electronic audio device says, as this is
`transmitted from the microphone input in the first elec—
`tronic audio device.
`
`LTE (Long-Term Evolution, commonly market-
`{0033}
`ed as 46 LTE) is a standard for wireless communication
`of high-speed data for mobile phones and data terminals.
`It is based on the GSM/EDGE and UMTS/HSPA network
`
`technologies, increasing the capacity and speed using a
`different radio interface together with core network im-
`provements.
`{0034}
`LTE may increase the capacity and speed of
`wireless data networks using new DSP (digital signal
`processing) techniques and modulations.
`{0035} The LTE specification provides downlink peak
`rates of 300 Mbit/s, uplink peak rates of 75 Mbit/s and
`QoS provisions permitting a transfer latency of less than
`5 ms in the radio access network. LTE has the ability to
`manage fast-moving mobiles and supports multi-cast
`and broadcast streams.
`
`{0036} The LTE standard covers a range of many dif—
`ferent bands, each of which is designated by both a fre-
`quency and a band number. in North America, 700, 750,
`800, 850, 1900, 1700/2100 (AWS), 2300 (WCS) 2500
`and 2600 MHZ (Rogers Communications, Bell Canada)
`are used (bands 2, 4, 5,7, 12, 13, 17, 25, 26, 30, 41);
`
`2500 MHZ in South America; 700, 800, 900, 1800, 2600
`MHZ in Europe (bands 3, 7, 20); 800, 1800 and 2600
`MHZ in Asia (bands 1, 3, 5, 7, 8, 11, 13, 40) and 1800
`MHZ and 2300 MHZ in Australia and New Zealand (bands
`3, 40).
`In some embodiments the electronic audio de—
`{0037]
`vices are configured to transmit and/or receive audio di—
`rectly between them by further using a cloud service. The
`cloud service may be a system specific cloud service
`such as a Jabra communication cloud service. Further,
`the transmitted audio can be stored, such as in the cloud
`service, such as in a remote data storage, such as in a
`remote storage area network, such as in a data storage
`of the cloud service. Further, the transmitted audio can
`be stored locally in the first and/or second electronic au—
`dio device or in electronic content devices, such in as
`mobile phones, smarts phones, tablets,
`laptops, PCs
`etc., associated with the electronic audio devices.
`{0038]
`in some embodiments the wireless connection
`is a long distance mobile telecommunications technolo-
`gy, such as Long-Term Evolution (LTE). The long dis—
`tance mobile telecommunications technology may alter-
`natively and/or additionally be 46, 3G or ZG. The wireless
`connection may alternatively and/or additionally be a
`short distance mobile telecommunications technology,
`such as Wi—Fi, LAN, BT, BLE etc.
`{0039]
`in some embodiments each of the electronic
`audio devices comprises an lnternet-of—Things (loT)
`gateway (GW) device and/or chip and/or component con—
`figured for providing the wireless connection using the
`cloud service. Thus an loT gateway hardware chip, such
`as from Greenwave, may be implemented in the first and
`second electronic audio devices for providing the audio
`communication between the electronic audio devices via
`
`e.g. the long distance wireless communication technol-
`ogy using the cloud service, such as a Jabra communi-
`cation cloud service. The loT gateway chip may be bat-
`tery powered or mains powered.
`{0040]
`in some embodiments the system comprises
`an electronic content device associated with the first elec-
`tronic audio device and/or the second electronic audio
`device. ln some embodiments the electronic content de—
`
`vice comprises a software application. ln some embod—
`iments the software application is configured for control-
`ling and/or processing the audio transmitted from the first
`electronic audio device to the second electronic audio
`
`device. The electronic content device may be a mobile
`phone, smart phone tablet, personal computer (PC),
`computer, portable media player etc. The software ap-
`plication may be an lnternet webpage or mobile phone
`application, mobile app, web application, computer pro-
`gram. The software application is installed on the elec—
`tronic content device, such as mobile phone, associated
`with the electronic audio device, and/or on a personal
`computer or tablet associated with the electronic audio
`device. The software application may be a Jabra We—
`bRTC or Jabra APP. Thus the software application, such
`as an app for a smartphone, may provide means for con-
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`trolling and/0r processing the audio to be transmitted.
`Thus it is an advantage that the electronic content device
`associated with the first electronic audio device may con-
`trol and/or process the audio transmitted between the
`electronic audio devices. Processing of the transmitted
`audio may comprise transferring the audio into text. The
`audio transmission may alternatively and/or additionally
`be controlled via gestures or communication commands
`of the user and/or via button controls directly on the elec—
`tronic audio device itselfand/orvia button controls direct-
`
`ly on the electronic content device. Thus switching be-
`tween the modes, e.g. between the first and second
`mode, may also be performed via software application,
`gestures, communication commands and/or buttons.
`The electronic content device may be a non-wearable
`device, such as smartphone, and/or a wearable device,
`such as a smart—wrist watch and/or a wearable—on-other-
`
`parts-of—the-body electronic smart-display devices.
`{0041} The gestures or communication commands can
`be via bite, breath, ‘Morse-codes’ via light amount when
`the user is opening/closing his/her mouth or using other
`human bio-indicators depending on where the electronic
`audio device and/or electronic content device is worn on
`
`the body of the user.
`{0042}
`in some embodiments the cloud service is con-
`figured to control an access key system. In some em-
`bodiments the access key system is configured to ex-
`change access keys between the electronic audio devic-
`es for enabling audio transmission between the first and
`the second electronic audio devices. The cloud service
`
`is configured to control and/or communicate the access
`key system. The access key system is configured to ex-
`change access keys and/or provide verification of the
`access keys. Thus it is an advantage to provide an access
`key system which is a security arrangement. Only the
`user of the first electronic audio device may initiate the
`audio transmission from the speaker and/or microphone
`ofthe first electronic audio device. Likewise, only the user
`of the second electronic audio device may initiate the
`audio transmission from the speaker and/or microphone
`of the second electronic audio device. Thus only the au-
`dio owner can transmit his/her own audio, i.e. the user
`of the other electronic audio device who is not creating
`audio but receiving audio cannot tap and/or retrieve audio
`from the audio owner without the audio owner’s permis—
`sion and awareness.
`
`{0043} The user of the electronic audio device which
`is not creating audio, may however request the audio
`owner to share his/her audio, e.g. by "pinging" the user
`of the electronic audio device creating or owning the au-
`dio.
`
`in some embodiments in the first mode, where
`{0044}
`the transmitted audio is e.g. solely an output from the
`speaker in the first electronic audio device, the transmit-
`ted audio is audio that is streamed from an electronic
`content device associated with the first electronic device,
`into the speakerofthefirstelectronic device is configured
`to be transmitted into the speakerofthe second electronic
`
`audio device. The streamed audio may be music and/or
`media content streamed via the Bluetooth protocol
`AZDP. The electronic content device may be a non-wear—
`able device or a wearable device, such as a mobile
`phone, smart phone tablet, personal computer, compu-
`ter, portable media player, smart wrist watch etc. it is an
`advantage that this ‘long distance audio linking‘ concept
`provides that music or media content, e.g. via A2DP,
`which is streamed from the electronic content device as-
`sociated with the first electronic audio device into the
`
`speaker of the first electronic audio device can be shared
`with the user of the second electronic audio device by
`transmission of the streamed audio into the speaker of
`the second electronic audio device. This enables two
`
`people to audio link their music and/or media even though
`they arefarapartand not using same music and/or media
`provider.
`in some embodiments in the first mode, where
`{0045]
`the transmitted audio is e.g. solely an output from the
`speaker in the first electronic audio device, the audio is
`audio from a phone conversation with a far-end caller
`received in the speaker ofthe first electronic device. Thus
`the call-audio from a phone conversation in the first elec-
`tronic audio device may be transmitted via a ’SCO-link‘,
`thus the audio is the received audio from a phone call
`conversation, that is the audio which is streamed when
`it is speaker-output alone that is transferred. The 800
`(Synchronous Connection—Oriented) link is atype of radio
`link used for voice data. A 800 link is a set of reserved
`
`timeslots on an existing ACL transport. Each device
`transmits encoded voice data in the reserved timeslot.
`There are no retransmissions, but forward error correc-
`tion can be optionally applied. SCO packets may be sent
`every 1, 2 or 3 timeslots. Unlike ACL, SCO data is
`streamed instead of framed, so no distinction may exist
`between SCO logical transports and logical links. The
`800 link may be an enhanced SCO link (e800), which
`links allow greaterflexibility in setting up links. They may
`use retransmissions to achieve reliability, allow a wider
`variety of packet types, and greater intervals between
`packets than SCO, thus increasing radio availability for
`other link. An advantage of this use case ’long distance
`listen-in using 800 link’ where the user of the first elec—
`tronic audio device is having a phone call on his/her BT-
`connected mobile phone, is that the audio from the far-
`end caller in the phone conversation is transmitted to the
`speaker of the second electronic audio device, i.e. this
`enables the user of the second electronic audio device
`
`10
`
`15
`
`20
`
`25
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`30
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`35
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`4O
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`45
`
`50
`
`to listen-in on the phone conversation of the user of the
`first electronic audio devi