GB2597009A - Microphone configurations for eyewear devices, systems, apparatuses, and methods - Google Patents

Microphone configurations for eyewear devices, systems, apparatuses, and methods Download PDF

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Publication number
GB2597009A
GB2597009A GB2115400.0A GB202115400A GB2597009A GB 2597009 A GB2597009 A GB 2597009A GB 202115400 A GB202115400 A GB 202115400A GB 2597009 A GB2597009 A GB 2597009A
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GB
United Kingdom
Prior art keywords
microphone
axis
signal
wearable device
head
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Granted
Application number
GB2115400.0A
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GB202115400D0 (en
GB2597009B (en
Inventor
Fan Dashen
Chen Xi
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.)
Solos Technology Ltd
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Solos Technology Ltd
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Filing date
Publication date
Priority claimed from US16/420,082 external-priority patent/US20200294521A1/en
Application filed by Solos Technology Ltd filed Critical Solos Technology Ltd
Publication of GB202115400D0 publication Critical patent/GB202115400D0/en
Publication of GB2597009A publication Critical patent/GB2597009A/en
Application granted granted Critical
Publication of GB2597009B publication Critical patent/GB2597009B/en
Active 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
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
    • H04R1/1083—Reduction of ambient noise
    • G—PHYSICS
    • G02—OPTICS
    • G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
    • G02C11/00—Non-optical adjuncts; Attachment thereof
    • G02C11/10—Electronic devices other than hearing aids
    • 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
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/32—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only
    • H04R1/40—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by combining a number of identical transducers
    • H04R1/406—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by combining a number of identical transducers microphones
    • 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
    • H04R3/005—Circuits for transducers, loudspeakers or microphones for combining the signals of two or more microphones
    • G—PHYSICS
    • G02—OPTICS
    • G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
    • G02C11/00—Non-optical adjuncts; Attachment thereof
    • G02C11/06—Hearing aids
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2201/00—Details of transducers, loudspeakers or microphones covered by H04R1/00 but not provided for in any of its subgroups
    • H04R2201/10—Details of earpieces, attachments therefor, earphones or monophonic headphones covered by H04R1/10 but not provided for in any of its subgroups
    • H04R2201/107—Monophonic and stereophonic headphones with microphone for two-way hands free communication
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2201/00—Details of transducers, loudspeakers or microphones covered by H04R1/00 but not provided for in any of its subgroups
    • H04R2201/40—Details of arrangements for obtaining desired directional characteristic by combining a number of identical transducers covered by H04R1/40 but not provided for in any of its subgroups
    • H04R2201/401—2D or 3D arrays of transducers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2201/00—Details of transducers, loudspeakers or microphones covered by H04R1/00 but not provided for in any of its subgroups
    • H04R2201/40—Details of arrangements for obtaining desired directional characteristic by combining a number of identical transducers covered by H04R1/40 but not provided for in any of its subgroups
    • H04R2201/405—Non-uniform arrays of transducers or a plurality of uniform arrays with different transducer spacing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2410/00—Microphones
    • H04R2410/01—Noise reduction using microphones having different directional characteristics
    • 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
    • H04R2420/01—Input selection or mixing for amplifiers or loudspeakers
    • 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
    • H04R2430/00—Signal processing covered by H04R, not provided for in its groups
    • H04R2430/01—Aspects of volume control, not necessarily automatic, in sound systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2430/00—Signal processing covered by H04R, not provided for in its groups
    • H04R2430/20—Processing of the output signals of the acoustic transducers of an array for obtaining a desired directivity characteristic
    • H04R2430/23—Direction finding using a sum-delay beam-former
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2460/00—Details of hearing devices, i.e. of ear- or headphones covered by H04R1/10 or H04R5/033 but not provided for in any of their subgroups, or of hearing aids covered by H04R25/00 but not provided for in any of its subgroups
    • H04R2460/01—Hearing devices using active noise cancellation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R25/00—Deaf-aid sets, i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception
    • H04R25/40—Arrangements for obtaining a desired directivity characteristic
    • H04R25/405—Arrangements for obtaining a desired directivity characteristic by combining a plurality of transducers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R25/00—Deaf-aid sets, i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception
    • H04R25/43—Electronic input selection or mixing based on input signal analysis, e.g. mixing or selection between microphone and telecoil or between microphones with different directivity characteristics

Landscapes

  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Acoustics & Sound (AREA)
  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • General Health & Medical Sciences (AREA)
  • Ophthalmology & Optometry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Circuit For Audible Band Transducer (AREA)
  • Stereophonic Arrangements (AREA)
  • Eyeglasses (AREA)
  • Helmets And Other Head Coverings (AREA)
  • Details Of Audible-Bandwidth Transducers (AREA)
  • Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)

Abstract

Systems and methods are described to extract desired audio from an apparatus to be worn on a user's head. An apparatus Includes a head wearable device and an array of at least three microphones. The at least three microphones are arranged along a plurality of at least two non-parallel axes. Selection logic is configured to identify a selected axis from the plurality and two microphones from die array that form the selected axis. A beamformer is configured to accept as inputs, signals from the two microphones and to output a main microphone channel and a reference microphone channel,.

Claims (1)

  1. What is claimed is;
    1. An apparatus to be worn on a userâ s head, comprising: a head wearable device; art array of at least three microphones, the at least three microphones are arranged along a plurality of at least two non-parallel a es selection logic, the selection logic is configured to identify a selected axis from the pl urality and two microphones from the array drat form the selected axis; and beam former, the bea fomrer is configured to accept as inputs, signals from the two microphones and to output a main microphone channel and a reference microphone channel .
    2. The apparatus of claim 1 , whetem the selection logic uses a metric to identify the selected axis.
    3. The apparatus of claim 2, wherein the metric includes a microphone that receives a maximum sound pressure level.
    4. The apparatus of claim 3, wherein the metric includes a microphone that receives a minimum sound pressure level.
    5. The apparatus of claim 2, wherein the selection logic is configure to monitor foe metric and to select a new selected axis from the plurality base on a new value for the metric.
    6 The apparatus of claim 3⁄4 wherein the metric is a maximum signahtomoise ratio difference for the two microphones.
    7. The apparatus of claim t , further comprising: a switch, the selected axis is selected based on a state of the switch. S The apparatus of claim i, wherein the main microphone channel and the reference microphone channel are input to a two-stage noise cancellation block.
    9. The apparatus of claim t , huffier comprising: a speaker, the speaker is coupled to the head wearable device and is configured to provide a signal that the user can hear .
    10. The apparatus of claim % wherein when the selected axis does not point towards the user's mouth, the main nhete hone channel and the reference microphone channel are used to create a signal that is input into the speaker. 11 , The apparatus of claim 1, wherein a first microphone, a second microphone., and a third microphone of the array are located on a first temple of the head wearable device.
    12. The apparatus: of claim Î ̄ I , whereat the first microphone and the second microphone are located on ait inside surface of the first temple.
    13. The apparatus of claim 11, the array further comprising: a fourth microphone , the fourth microphone is located on a second temple of the head: wearable device and the first microphone and the fourth microphone form a third axis, the second microphone and the fxftirth microphone form a fourth axis and the third axis is different from the fourth axis, the selection logic to select an active direction front one of at least the first axis, the second axis, and the third axis.
    14. An apparatus to be worn on a userâ s head, comprising: a head wearable device the head wearable device further comprising: an array of three microphones, the array is coupled: to the head wearable device, wherein a first microphone and second: microp one of the array define a first axis; the second microphone and a third microphones define a second axis; and a speaker, the speaker is coupled to the head wearable device an is configured to pro vide a signal that the user can hear and selection logic, the selection logic to select an active direction from the first axis and the second axis, when the active direction is the first axis; a. outputs front the first microphone an the second microphone are to he processed lot transmission item the head wearable device; when the acti ve directio is the secon axis; b. outputs from the second: microphone an the third microphone are to be processed for use as an input to th speaker. ]
    5. Tiie apparatus of claim 14, wherein the first micro phone, the second microphone, and the third microphone are located on a first: tem le of the head wearable device.
    16. The apparatus pf clai 15, wherein the first microphone and the second: microphone are located on an inside surface of the first temple and the third microphone is located on a bottom surface of the first temple.
    17. The apparatus of claim IS, the array further comprising a fourth microphone, the: fourth microphone is located on a second temple of the head wearable device and the first microphone and the fourth microphone form: a third axis, the second microphone and the fourth microphone form a fourth axis and the third axis is different from the fourth axis, the selection logic to select an active direction from one of at least the first axis, the second axis, and the third axis.
    18. A method to select acoustic signals received on a device to be wont on a «sexâ s head, comprising: comparing acoustic signals from an array of at least three microphones, wherein locations of the at feast three microphones define three axe that are not parallel; selecting a first microphone pair from the array , wherein the first microphone pair contains a first microphone and a second microphone; forming a primary microphone signal from the first microphone pair; and forming a rcf nce microphone signal from the first microphone pair, wherein the primary microphone signal and the reference microphone signal are to be .input to a noise cancellation block to reduce noise from the primary microphone signal.
    19. The method of claim 1 S, wherein the comparing forms at least three microphone pairs from the array, a potential primary' and a potential reference microphon are identified ftom each microphone pair, a signal-to-noise ratio difference is calculated for each microphone pair, and the first microphone pair is foe microphone pair that has the largest SNR difference.
    20. The method of claim 18, wherein the form mg the primary microphone signal is accomplished by beam forming t he first microphone pair and forming the reference microphone signal is ccomplished without bea forming the first microphone pair 2|, The method of claim 18, wherein the forming the primary microphone signal is accomplished without beamforming the first microphone pair and forming the reference microphone signal is accomplished by heamfbrming the first microphone pair.
    22. The method of claim. 1 wherein during the comparing aco ustic signals.,beamfomring is performed on microphone pairs. , An apparatus to be worn ton a userâ s bead, comprising: a bead wearable evic , the bead wearable device is configured to be worn on the user's bead; a First microphone, the first microphone is coupled to the head wearable device to receive a first acoustic signal from a sound source; a second microphone, the second microphone is coupled to the bead wearable device to receive a second acoustic signal -from the sound source; and a heamformsr, the beam former further compri sing : a first input, the first input is configured to receive the first acoustic signal; a second input, the second Input: is configured to receive the second acoustic signal; a main signal output, the bea former is configured to ton» a main signal from the first: acoustic signal and the second acoustic signal wherein the main signal is formed by steering a main response axis in a first direction, the main signal to be output from the main signal output: and a reference signal output, the beam&nner is configured: to form a reference signal front: the first acoustic signal and the second acoustic signal wherein the reference signal is formed by steering a reference response axis in a second direction, wherein the first direction is different fro the second direction the reference signal to be output from the reference signal output.
    24. The apparatus of cla im 23, wherein first axis formed between the first microphone and the second microphone points towards the user â s mouth when the head wearable device is on the user's head. 25, The apparatus of elaim 24, wherein: a second axis formed between tire first microphon and the second microphone points forward of the user when the head wearable device is on the user's head.
    26. The apparatus of clai 25, wherein a third axis formed between die first microphone and the second microphone points to a side of the user when the bea wearable device is on the user's head 27:, The apparatus of claim 26» further comprising; selection logic, the selection logic is configured to select the first direction from one of the first axis, the second axis, and the third axis base on a prede fined criterion .
    28. The apparatus of claim 23, wherein the main signal is to he input as a main channel to a two-stage noise cancellation unit and th reference signal is to be input as a reference channel to the two-stage noise cancellation unit.
    29. An apparatus to be worn on a userâ s head, comprising; a head wearable device five bead wearable device is configured to be worn on the riser's head; a first microphone, the first microphone is coupled to a first temple of the head wearable device to receive a first acoustic signal from sound source, tire first microphone is first distance front the sound source· a second microphone, the second microphone is coupled to a first: temple of the head wearable device to receive a second acoustic signal from the sound source, the second microphone is second distance from the sound source; an a beantformer, the beamfor er further comprising: a. first input, the first input is configured to receive the first acoustic: signal; a secon input, the second input is configured to receive the secon acoustic signal; a main signal output, the beamformer is configured to form a main signal from the first acoustic signal and the second acoustic signal wherein the main signal is formed by steering a main response axis in a first direction, the main signal to be output from the main signal output; and a reference signal, the second acoustic signal is used for the refonce signal and the second distance is greater than the first distance.
GB2115400.0A 2019-05-22 2020-05-21 Microphone configurations for eyewear devices, systems, apparatuses, and methods Active GB2597009B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US16/420,082 US20200294521A1 (en) 2013-03-13 2019-05-22 Microphone configurations for eyewear devices, systems, apparatuses, and methods
PCT/IB2020/000829 WO2021048632A2 (en) 2019-05-22 2020-05-21 Microphone configurations for eyewear devices, systems, apparatuses, and methods

Publications (3)

Publication Number Publication Date
GB202115400D0 GB202115400D0 (en) 2021-12-08
GB2597009A true GB2597009A (en) 2022-01-12
GB2597009B GB2597009B (en) 2023-01-25

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JP (1) JP7350092B2 (en)
CN (1) CN113875264A (en)
GB (1) GB2597009B (en)
WO (1) WO2021048632A2 (en)

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CN118102155B (en) * 2024-04-23 2024-06-25 深圳市万屏时代科技有限公司 Gain method and system of microphone

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Also Published As

Publication number Publication date
GB202115400D0 (en) 2021-12-08
JP2022533391A (en) 2022-07-22
WO2021048632A2 (en) 2021-03-18
WO2021048632A3 (en) 2021-06-10
CN113875264A (en) 2021-12-31
GB2597009B (en) 2023-01-25
JP7350092B2 (en) 2023-09-25

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