EP1887832A1 - Wireless earphones - Google Patents

Wireless earphones Download PDF

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Publication number
EP1887832A1
EP1887832A1 EP06016621A EP06016621A EP1887832A1 EP 1887832 A1 EP1887832 A1 EP 1887832A1 EP 06016621 A EP06016621 A EP 06016621A EP 06016621 A EP06016621 A EP 06016621A EP 1887832 A1 EP1887832 A1 EP 1887832A1
Authority
EP
European Patent Office
Prior art keywords
audio signal
earphone
transmitter
receiver
earphones
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP06016621A
Other languages
German (de)
French (fr)
Inventor
Heinrich Esser
Wolfgang Niehoff
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sennheiser Electronic GmbH and Co KG
Original Assignee
Sennheiser Electronic GmbH and Co KG
Sennheiser Communications AS
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Sennheiser Electronic GmbH and Co KG, Sennheiser Communications AS filed Critical Sennheiser Electronic GmbH and Co KG
Priority to EP06016621A priority Critical patent/EP1887832A1/en
Publication of EP1887832A1 publication Critical patent/EP1887832A1/en
Withdrawn legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R3/00—Circuits for transducers, loudspeakers or microphones
    • H04R3/04—Circuits for transducers, loudspeakers or microphones for correcting frequency response
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
    • H04R1/1083—Reduction of ambient noise
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2420/00—Details of connection covered by H04R, not provided for in its groups
    • H04R2420/07—Applications of wireless loudspeakers or wireless microphones
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R5/00—Stereophonic arrangements
    • H04R5/033—Headphones for stereophonic communication

Definitions

  • the present invention relates to earphones and in particular headband less earphones.
  • Wireless headphones are becoming more and more commonplace even in connection with mobile devices. Therefore, the corded headphones are being replaced by wireless headphones which typically use the bluetooth technology to transmit the audio signals to be reproduced to a wireless receiver in the headphone.
  • wireless headsets have become increasingly popular especially with mobile phones.
  • the communication between the mobile phone and a wireless headset is typically performed based on the bluetooth technology.
  • wireless headphones are often considered as being too bulky, typical wireless headsets for mobile phones merely have one earphone.
  • an earphone (in particular a headbandless earphone) is provided.
  • the earphone comprises a wireless receiver for wirelessly receiving a first audio signal to be reproduced by the earphone.
  • the earphone furthermore comprises a first electroacoustic transducer for reproducing part of the first audio signal and a second transmitter for wirelessly transmitting a second audio signal.
  • the second audio signal is derived from the first audio signal.
  • the audio signal (the first signal) which is to be reproduced on the earphone/headphone is transmitted via a first wireless protocol. Accordingly, the first headphone can transmit the second signal irrespective of the first audio signal.
  • the first headphone can wirelessly transmit an audio signal to a second headphone such that the user of the first headphone can use two headphones for a stereo reproduction of the audio signal.
  • Fig. 1 shows a basic representation of the environment of an earphone according to the first embodiment.
  • a first transmitter TX1 wirelessly transmits a first audio signal via a first link L1 to a first earphone E1.
  • the first earphone E1 receives the wirelessly transmitted first audio signal via its first receiver RX1 and transmits a part of the received audio signal or a signal derived from the first audio signal (second audio signal) by means of a second transmitter TX2 via a second link L2 wirelessly to a second earphone E2, Part of the audio signal or a signal derived from the audio signal is reproduced by a first electroacoustic transducer ET1.
  • the second earphone comprises a second receiver RX2, which receives the wirelessly transmitted second audio signal from the first earphone E1.
  • the second audio signal is reproduced by a second electroacoustic transducer ET2.
  • the first earphone may be the left earphone, while the second earphone may correspond to a right earphone. Accordingly, the first earphone E1 (the left earphone) may transmit the audio signal for the right earphone (E2) via the second link such that a stereo reproduction of the received audio signal is possible. Accordingly, the first earphone receives the audio signal via the first link L1, determines the signal which is necessary for the reproduction of the right channel, for example for a stereo reproduction, and transmits the required signal to the second earphone.
  • Fig. 2 shows a block diagram of an earphone of Fig. 1 according to a second embodiment.
  • the first earphone E1 comprises a first receiver RX1 for wirelessly receiving a first audio signal AS1 via a first link L1.
  • a second transmitter TX2 is furthermore provided for wirelessly transmitting a second audio signal from the first earphone E1 for example to a second earphone E2.
  • the second audio signal AS2 is part of, contained in, decoded in or derived from the first audio signal AS1 received via the first link L1.
  • the first earphone E1 comprises an acoustic transducer AT for reproducing the first audio signal or at least parts thereof
  • the first earphone E1 may comprise an audio decoder AD, a memory MEM, a microphone MIC and an active noise reduction unit ANR.
  • the audio decoder AD may receive the first audio signal AS1 from the first receiver RX and may decode the first audio signal AS1.
  • the decoding performed by the audio decoder AD may be based on a MP3 decoding, a MPEG4 decoding or any other audio decoding.
  • the audio decoder AD may also decode audio signals stored in the memory MEM.
  • the memory MEM may be implemented as a semiconductor memory arranged in the first earphone E1. Alternatively, the memory MEM may be implemented as a slot for inserting memory cards.
  • the microphone MIC in connection with the active noise reduction unit ANR may be used to perform an active noise reduction.
  • the microphone MIC may also be used to detect an audio signal from the user of the earphone and to forward this recorded audio signal to a third transmitter TX3 which may wirelessly transmit this audio signal to a further receiver arranged in the environment of the earphones.
  • the first receiver RX1 is implemented as a receiver which is capable to receive a stereo or a multi-channel audio signal.
  • the first receiver RX1 and the second transmitter TX2 are implemented in one single earphone E1, in particular in a single housing.
  • the second transmitter TX2 is used to merely transmit those signals to the second earphone E2 which are actually required by the second earphone E2.
  • the transmitter TX2 merely needs to transmit a signal over the short distance of approximately 20 cm.
  • the second transmitter TX2 may use the usual high frequency ranges, like Bluetooth, WLAN, HomeRF or the like.
  • the second transmitter TX2 may also use the specific 176 MHz band for hearing aid devices.
  • the second transmitter TX2 may also use a transmission in the frequency range below 500 kHz.
  • the housing of the first earphone E1 comprises a mechanical retainer for the second earphone E2.
  • this retainer may also comprise a charging terminal for charging the battery of the second earphone E2.
  • the second earphone can be hooked into the first earphone. Such a situation may arise if the user is driving a car or a bicycle. However, if the user wants to use both earphones, the second earphone may be taken from the retainer in the first earphone and placed over the other ear of the user.
  • the first earphone may comprise a detecting unit for detecting whether the second earphone E2 is hooked into the first earphone or not. If the second earphone E2 is not hooked into the first earphone, then the second transmitter TX2 is activated to transmit the second audio signal to the second earphone via the second link L2.
  • a cable connection is present between the first and second earphone E1, E2.
  • the second earphone E2 may be implemented as a passive earphone.
  • a plug is present between the first and second earphone,
  • the cable connection may be rolled up.
  • the above-mentioned earphones are preferably implemented as in-ear phones.
  • the first receiver RX1 and the second transmitter TX2 are not arranged in an earphone but are arranged in an extra housing which is detached from the earphone,
  • the first receiver RX1 and the second transmitter TX2 are arranged in or as a separate box.
  • This box could be implemented as a transponder which could be attached to a belt of a user or it could be arranged in a shirt pocket of a user.
  • a first earphone E1 will comprise a third receiver and a third transmitter as well as a first electroacoustic transducer.
  • the third receiver will receive an audio signal from the second transmitter TX2 and will transmit a fourth audio signal from the third transmitter to a second receiver in a second earphone E2.
  • the difference between this embodiment and the first embodiment is that the first receiver RX1 and the second transmitter TX2 are arranged outside or detached from the earphone.
  • the range of the transponder i.e. the range of the second transmitter, is smaller than 3m.
  • a receiver unit which comprises a first receiver and a second transmitter TX2.
  • the first receiver RX1 is preferably adapted to receive audio signals from external transmitters TX1 which may optionally be able to transmit the audio signals based on a high power.
  • the second transmitter TX2 is adapted to transmit the second audio signal based on low power.
  • a microphone M may be provided which can be adapted to record audio signals from a user.
  • the microphone may comprise a fifth transmitter TX5 for transmitting the recorded audio signal to the receiver unit.
  • the receiver unit may furthermore comprise a sixth transmitter for transmitting the received audio signal to the first transmitter TX1.

Abstract

An earphone (in particular a headbandless earphone) is provided. The earphone comprises a wireless receiver (RX1) for wirelessly receiving a first audio signal to be reproduced by the earphone. The earphone furthermore comprises a first electroacoustic transducer (ET1) for reproducing part of the first audio signal and a second transmitter (TX2) for wirelessly transmitting a second audio signal. The second audio signal is derived from the first audio signal.

Description

  • The present invention relates to earphones and in particular headband less earphones.
  • Wireless headphones are becoming more and more commonplace even in connection with mobile devices. Therefore, the corded headphones are being replaced by wireless headphones which typically use the bluetooth technology to transmit the audio signals to be reproduced to a wireless receiver in the headphone.
  • On the other hand, wireless headsets have become increasingly popular especially with mobile phones. The communication between the mobile phone and a wireless headset is typically performed based on the bluetooth technology.
  • While wireless headphones are often considered as being too bulky, typical wireless headsets for mobile phones merely have one earphone.
  • It is therefore an object of the invention to provide a wireless headphone which is less bulky while still enabling a high quality reproduction of audio signals,
  • This object is solved by an earphone according to claim 1,
  • Therefore, an earphone (in particular a headbandless earphone) is provided. The earphone comprises a wireless receiver for wirelessly receiving a first audio signal to be reproduced by the earphone. The earphone furthermore comprises a first electroacoustic transducer for reproducing part of the first audio signal and a second transmitter for wirelessly transmitting a second audio signal. The second audio signal is derived from the first audio signal.
  • Accordingly, the audio signal (the first signal) which is to be reproduced on the earphone/headphone is transmitted via a first wireless protocol. Accordingly, the first headphone can transmit the second signal irrespective of the first audio signal.
  • Accordingly, the first headphone can wirelessly transmit an audio signal to a second headphone such that the user of the first headphone can use two headphones for a stereo reproduction of the audio signal.
  • Further aspects of the invention are subject to the dependent claims.
  • The embodiments of the invention as well as their advantages as well as the advantages thereof will now be described with reference to the drawings.
    • Fig. 1
    shows a basic representation of an architecture of the environment of an earphone according to a first embodiment; and
    Fig. 2
    shows a block diagram of an earphone of Fig. 1 according to a second embodiment.
  • Fig. 1 shows a basic representation of the environment of an earphone according to the first embodiment. A first transmitter TX1 wirelessly transmits a first audio signal via a first link L1 to a first earphone E1. The first earphone E1 receives the wirelessly transmitted first audio signal via its first receiver RX1 and transmits a part of the received audio signal or a signal derived from the first audio signal (second audio signal) by means of a second transmitter TX2 via a second link L2 wirelessly to a second earphone E2, Part of the audio signal or a signal derived from the audio signal is reproduced by a first electroacoustic transducer ET1. The second earphone comprises a second receiver RX2, which receives the wirelessly transmitted second audio signal from the first earphone E1. The second audio signal is reproduced by a second electroacoustic transducer ET2.
  • The first earphone may be the left earphone, while the second earphone may correspond to a right earphone. Accordingly, the first earphone E1 (the left earphone) may transmit the audio signal for the right earphone (E2) via the second link such that a stereo reproduction of the received audio signal is possible. Accordingly, the first earphone receives the audio signal via the first link L1, determines the signal which is necessary for the reproduction of the right channel, for example for a stereo reproduction, and transmits the required signal to the second earphone.
  • Fig. 2 shows a block diagram of an earphone of Fig. 1 according to a second embodiment. The first earphone E1 comprises a first receiver RX1 for wirelessly receiving a first audio signal AS1 via a first link L1. A second transmitter TX2 is furthermore provided for wirelessly transmitting a second audio signal from the first earphone E1 for example to a second earphone E2. The second audio signal AS2 is part of, contained in, decoded in or derived from the first audio signal AS1 received via the first link L1. Moreover, the first earphone E1 comprises an acoustic transducer AT for reproducing the first audio signal or at least parts thereof, Optionally, the first earphone E1 may comprise an audio decoder AD, a memory MEM, a microphone MIC and an active noise reduction unit ANR. The audio decoder AD may receive the first audio signal AS1 from the first receiver RX and may decode the first audio signal AS1. The decoding performed by the audio decoder AD may be based on a MP3 decoding, a MPEG4 decoding or any other audio decoding. The audio decoder AD may also decode audio signals stored in the memory MEM. The memory MEM may be implemented as a semiconductor memory arranged in the first earphone E1. Alternatively, the memory MEM may be implemented as a slot for inserting memory cards.
  • The microphone MIC in connection with the active noise reduction unit ANR may be used to perform an active noise reduction.
  • Furthermore, the microphone MIC may also be used to detect an audio signal from the user of the earphone and to forward this recorded audio signal to a third transmitter TX3 which may wirelessly transmit this audio signal to a further receiver arranged in the environment of the earphones.
  • Preferably, the first receiver RX1 is implemented as a receiver which is capable to receive a stereo or a multi-channel audio signal. The first receiver RX1 and the second transmitter TX2 are implemented in one single earphone E1, in particular in a single housing. The second transmitter TX2 is used to merely transmit those signals to the second earphone E2 which are actually required by the second earphone E2.
  • As the first earphone E1 may be used for the left ear and the second earphone E2 may be used for the right ear, the distance between the first and second earphones E1, E2 will be approximately 20 cm, Therefore, the transmitter TX2 merely needs to transmit a signal over the short distance of approximately 20 cm. Hence, the second transmitter TX2 may use the usual high frequency ranges, like Bluetooth, WLAN, HomeRF or the like. Alternatively, the second transmitter TX2 may also use the specific 176 MHz band for hearing aid devices. Alternatively, the second transmitter TX2 may also use a transmission in the frequency range below 500 kHz.
  • According to a third embodiment, the housing of the first earphone E1 comprises a mechanical retainer for the second earphone E2. Preferably, this retainer may also comprise a charging terminal for charging the battery of the second earphone E2.
  • If the user of the earphone merely requires a single earphone, then the second earphone can be hooked into the first earphone. Such a situation may arise if the user is driving a car or a bicycle. However, if the user wants to use both earphones, the second earphone may be taken from the retainer in the first earphone and placed over the other ear of the user. According to a further embodiment of the Invention, the first earphone may comprise a detecting unit for detecting whether the second earphone E2 is hooked into the first earphone or not. If the second earphone E2 is not hooked into the first earphone, then the second transmitter TX2 is activated to transmit the second audio signal to the second earphone via the second link L2.
  • According to a further embodiment of the invention, a cable connection is present between the first and second earphone E1, E2. In this embodiment, the second earphone E2 may be implemented as a passive earphone. Preferably, a plug is present between the first and second earphone, Optionally, the cable connection may be rolled up.
  • The above-mentioned earphones are preferably implemented as in-ear phones.
  • According to an alternative embodiment, the first receiver RX1 and the second transmitter TX2 are not arranged in an earphone but are arranged in an extra housing which is detached from the earphone, In other words, the first receiver RX1 and the second transmitter TX2 are arranged in or as a separate box. This box could be implemented as a transponder which could be attached to a belt of a user or it could be arranged in a shirt pocket of a user. Accordingly, a first earphone E1 will comprise a third receiver and a third transmitter as well as a first electroacoustic transducer. The third receiver will receive an audio signal from the second transmitter TX2 and will transmit a fourth audio signal from the third transmitter to a second receiver in a second earphone E2. Hence, the difference between this embodiment and the first embodiment is that the first receiver RX1 and the second transmitter TX2 are arranged outside or detached from the earphone. The range of the transponder, i.e. the range of the second transmitter, is smaller than 3m.
  • In other words, a receiver unit is provided which comprises a first receiver and a second transmitter TX2. The first receiver RX1 is preferably adapted to receive audio signals from external transmitters TX1 which may optionally be able to transmit the audio signals based on a high power. On the other hand, the second transmitter TX2 is adapted to transmit the second audio signal based on low power.
  • In addition to the two earphones E1 and E2, a microphone M may be provided which can be adapted to record audio signals from a user. The microphone may comprise a fifth transmitter TX5 for transmitting the recorded audio signal to the receiver unit. The receiver unit may furthermore comprise a sixth transmitter for transmitting the received audio signal to the first transmitter TX1.

Claims (9)

  1. Earphones, in particular headbandless earphones, comprising
    a first wireless receiver (RX1) for wirelessly receiving a first audio signal via an external first transmitter (TX1),
    a first electroacoustic transducer (ET1) for reproducing part of the first audio signal,
    a second transmitter (TX2) for wirelessly transmitting a second audio signal,
    wherein the second audio signal is derived from the first audio signal.
  2. Earphones according to claim 1, wherein the second audio signal is contained in the first audio signal or wherein the first and second audio signals are mixed or encoded.
  3. Earphones according to claim 1 or 2, further comprising a second electroacoustic transducer (ET2) for reproducing the second audio signal.
  4. Earphones according to claim 1, 2 or 3, wherein the second transmitter (TX2) is adapted to transmit the second audio signal over a short distance, in particular over a distance less than approximately 30 cm.
  5. Earphones according to anyone of the claims 1 to 4, furthermore comprising a housing (E1), wherein the first receiver (RX1) and the second transmitter (TX2) are arranged inside the housing (E1).
  6. Earphones according to anyone of the claims 1 to 5, furthermore comprising a second earphone (E2) which comprises a second receiver (RX2) for receiving the wirelessly transmitted second signal.
  7. Earphones according to one of the preceding claims, wherein the first earphone (E1) comprises a retainer unit for receiving the second earphone (E2).
  8. Receiver unit for providing wireless audio signals for an earphone, a headphone and/or a headset, comprising
    a wireless receiver for wirelessly receiving a first audio signal via an external first transmitter (TX1),
    a second transmitter (TX2) for wirelessly transmitting an audio signal to a first earphone, the headphone and/or the headset, wherein the second audio signal is derived from the first audio signal.
  9. Receiver unit according to claim 8, wherein
    the range of the second transmitter (TX2) is less than 3 meters.
EP06016621A 2006-08-09 2006-08-09 Wireless earphones Withdrawn EP1887832A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP06016621A EP1887832A1 (en) 2006-08-09 2006-08-09 Wireless earphones

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP06016621A EP1887832A1 (en) 2006-08-09 2006-08-09 Wireless earphones

Publications (1)

Publication Number Publication Date
EP1887832A1 true EP1887832A1 (en) 2008-02-13

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP06016621A Withdrawn EP1887832A1 (en) 2006-08-09 2006-08-09 Wireless earphones

Country Status (1)

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EP (1) EP1887832A1 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2475975A (en) * 2009-12-04 2011-06-08 Marcus Lewis Personal audio equipment device
DE102014106546A1 (en) * 2014-05-09 2015-11-12 Jan Philip Preissner Wireless earphone system
US9532131B2 (en) 2014-02-21 2016-12-27 Apple Inc. System and method of improving voice quality in a wireless headset with untethered earbuds of a mobile device
US9621987B2 (en) 2010-09-02 2017-04-11 Apple Inc. Un-tethered wireless audio system
EP3267666A1 (en) * 2016-07-08 2018-01-10 GN Audio A/S A wireless earphone system comprising a first earphone and a second earphone

Citations (7)

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Publication number Priority date Publication date Assignee Title
US6374126B1 (en) * 1999-11-10 2002-04-16 Ericsson Inc. Hands-free headset with stowable stereo earpiece
EP1326478A2 (en) * 2003-03-07 2003-07-09 Phonak Ag Method for producing control signals, method of controlling signal transfer and a hearing device
EP1398994A2 (en) * 2002-09-12 2004-03-17 Micro Ear Technology, Inc. System and method for selectively coupling hearing aids to electromagnetic signals
WO2004110099A2 (en) * 2003-06-06 2004-12-16 Gn Resound A/S A hearing aid wireless network
US20050281421A1 (en) * 2004-06-22 2005-12-22 Armstrong Stephen W First person acoustic environment system and method
EP1670283A1 (en) * 2004-12-08 2006-06-14 Sony Ericsson Mobile Communications AB Bluetooth headset
EP1672957A2 (en) * 2006-03-02 2006-06-21 Phonak AG Antenna arrangement and hearing device and method for making a wireless communication link

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6374126B1 (en) * 1999-11-10 2002-04-16 Ericsson Inc. Hands-free headset with stowable stereo earpiece
EP1398994A2 (en) * 2002-09-12 2004-03-17 Micro Ear Technology, Inc. System and method for selectively coupling hearing aids to electromagnetic signals
EP1326478A2 (en) * 2003-03-07 2003-07-09 Phonak Ag Method for producing control signals, method of controlling signal transfer and a hearing device
WO2004110099A2 (en) * 2003-06-06 2004-12-16 Gn Resound A/S A hearing aid wireless network
US20050281421A1 (en) * 2004-06-22 2005-12-22 Armstrong Stephen W First person acoustic environment system and method
EP1670283A1 (en) * 2004-12-08 2006-06-14 Sony Ericsson Mobile Communications AB Bluetooth headset
EP1672957A2 (en) * 2006-03-02 2006-06-21 Phonak AG Antenna arrangement and hearing device and method for making a wireless communication link

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2475975A (en) * 2009-12-04 2011-06-08 Marcus Lewis Personal audio equipment device
WO2011067578A1 (en) * 2009-12-04 2011-06-09 Marcus Lewis Personal audio equipment
GB2476033A (en) * 2009-12-04 2011-06-15 Marcus Lewis Personal audio equipment device
CN102792713A (en) * 2009-12-04 2012-11-21 马库斯·刘易斯 Personal audio equipment
CN102792713B (en) * 2009-12-04 2016-02-17 马库斯·刘易斯 personal audio device
AU2010326368B2 (en) * 2009-12-04 2016-07-07 Marcus Lewis Personal audio equipment
US9621987B2 (en) 2010-09-02 2017-04-11 Apple Inc. Un-tethered wireless audio system
US9788117B2 (en) 2010-09-02 2017-10-10 Apple Inc. Un-tethered wireless audio system
US9532131B2 (en) 2014-02-21 2016-12-27 Apple Inc. System and method of improving voice quality in a wireless headset with untethered earbuds of a mobile device
US9913022B2 (en) 2014-02-21 2018-03-06 Apple Inc. System and method of improving voice quality in a wireless headset with untethered earbuds of a mobile device
DE102014106546A1 (en) * 2014-05-09 2015-11-12 Jan Philip Preissner Wireless earphone system
EP3267666A1 (en) * 2016-07-08 2018-01-10 GN Audio A/S A wireless earphone system comprising a first earphone and a second earphone

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