Measurement device and measurement system

{
  "publication_number": "US2016150328A1",
  "country": "US",
  "kind": "A1",
  "title": "Measurement device and measurement system",
  "abstract": "A measurement device (10) for evaluating an electronic device (100) that causes sound to be heard via vibration transmission by pressing a vibrating body against a human ear includes an ear model (50) modeled after a human ear and vibration pickups (57 a) and (57 b) disposed at a periphery of an artificial external ear canal (53) formed in the ear model (50).",
  "claims": [
    "1. A measurement device for evaluating an electronic device that causes sound to be heard via vibration transmission by pressing a vibrating body against a human ear, the measurement device comprising: an ear model modeled after a human ear; and a plurality of vibration pickups disposed at a periphery of an artificial external ear canal formed in the ear model. 2. The measurement device of claim 1, wherein the ear model comprises an artificial external ear canal unit, an artificial ear joined to the artificial external ear canal unit, and a vibration transmitter joined to the artificial external ear canal unit, and the artificial external ear canal is formed in the artificial external ear canal unit, and the plurality of vibration pickups is mounted on the vibration transmitter. 3. The measurement device of claim 2, wherein the vibration transmitter is formed by a vibration transmission member including a hole in communication with the artificial external ear canal. 4. The measurement device of claim 3, wherein the hole has a diameter of 5 mm to 18 mm. 5. The measurement device of claim 4, wherein the vibration transmission member is shaped as a ring with an external diameter that is 6 mm to 12 mm greater than a diameter of the hole. 6. The measurement device of claim 2, wherein the vibration transmitter comprises a plurality of vibration transmission members joined at the periphery of the artificial external ear canal, and one or more of the vibration pickups is mounted on each of the vibration transmission members. 7. The measurement device of claim 1, wherein the plurality of vibration pickups includes two vibration pickups disposed symmetrically with respect to the artificial external ear canal. 8. The measurement device of claim 1, further comprising a vibration output combiner configured to combine output of the plurality of vibration pickups. 9. The measurement device of claim 8, further comprising: a plurality of frequency characteristic adjusters configured to adjust a frequency characteristic of output from each of the plurality of vibration pickups, wherein the vibration output combiner combines output of the plurality of frequency characteristic adjusters. 10. The measurement device of claim 1, wherein the ear model further comprises a microphone configured to measure sound pressure of sound propagating through the artificial external ear canal. 11. The measurement device of claim 10, wherein the microphone is held in a tube member extending from an outer wall of the artificial external ear canal. 12. The measurement device of claim 10, wherein the microphone is disposed in a floating state with respect to an outer wall of the artificial external ear canal. 13. The measurement device of claim 1, wherein the artificial external ear canal has a length of 8 mm to 30 mm. 14. The measurement device of claim 1, wherein the ear model includes a portion formed from material conforming to IEC 60318-7. 15. A measurement system for evaluating an acoustic device including a microphone that collects sound and a vibrating body that is pressed against an ear of a user and transmits sound collected by the microphone to the user, the measurement system comprising: a speaker; an ear model modeled after a human ear; a vibration sound detector disposed in the ear model; and an anechoic space housing the speaker, the ear model, and the vibration sound detector. 16. A measurement system for evaluating an acoustic device including a microphone that collects sound and a vibrating body that is pressed against an ear of a user and transmits sound collected by the microphone to the user, the measurement system comprising: a speaker; an ear model modeled after a human ear; an air-conducted sound detector disposed in an artificial external ear canal formed in the ear model; and an anechoic space housing the speaker, the ear model, and the air-conducted sound detector. 17. A measurement system for evaluating an acoustic device including a microphone that collects sound and a vibrating body that is pressed against an ear of a user and transmits sound collected by the microphone to the user, the measurement system comprising: a speaker; an ear model modeled after a human ear; a vibration sound detector disposed in the ear model; an air-conducted sound detector disposed in an artificial external ear canal formed in the ear model; and an anechoic space housing the speaker, the ear model, the vibration sound detector, and the air-conducted sound detector. 18. The measurement system of claim 15, further comprising: a head model modeled after a human head; and a left and right pair of the ear models, wherein the ear models are respectively detachable from a left and right side of the head model. 19. The measurement system of claim 15, further comprising: a semispherical model modeled after half of a human head, wherein the ear model is detachable from the semispherical model. 20. The measurement system of claim 19, wherein the semispherical model is configured so that both left and right ear models are detachable. 21. The measurement system of claim 15, wherein the speaker is disposed at a position with an angle that is one of 0°, 90°, 180°, and 270°, where a front of a virtual human provided with the ear model is at the angle of 0°. 22. The measurement system of claim 21, wherein the measurement system stores a head-related transfer function corresponding to when the angle is any of 0°, 90°, 180°, and 270°. 23. The measurement system of claim 15, wherein the measurement system outputs sound of a predetermined sound pressure from the speaker and displays a frequency characteristic of a value measured by the vibration sound detector in the predetermined sound pressure. 24. The measurement system of claim 16, wherein the measurement system outputs sound of a predetermined sound pressure from the speaker and displays a frequency characteristic of a value measured by the air-conducted sound detector in the predetermined sound pressure. 25. The measurement system of claim 17, wherein the measurement system outputs sound of a predetermined sound pressure from the speaker and displays a frequency characteristic of combined sound that is a combination of a value detected by the air-conducted sound detector and a value detected by the vibration sound detector in the predetermined sound pressure. 26. The measurement system of claim 15, wherein the ear model is formed from material conforming to IEC 60318-7. 27. The measurement system of claim 15, wherein the vibration sound detector comprises at least one vibration detection element."
  ],
  "cpc": [
    "H04R 25/30",
    "H04M 1/24",
    "H04M 1/72478",
    "H04R 17/00",
    "H04R 2225/57",
    "H04R 2460/13",
    "H04R 25/60",
    "H04R 25/607",
    "H04R 25/608",
    "H04R 25/609"
  ],
  "assignees": [
    "KYOCERA CORP"
  ],
  "filing_date": "2014-06-24",
  "publication_date": "2016-05-26",
  "priority_date": "2013-06-26",
  "application_number": "US-201414899362-A",
  "family_id": "52141444",
  "citations": [
    "US2008159571A1",
    "US2010239107A1",
    "US2011100127A1",
    "US2011280425A1",
    "US2011319021A1",
    "US2013034253A1",
    "US5856722A",
    "US8520866B2"
  ]
}