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Canta ITE’s

Global Technical Operations. Canta ITE’s. March 2001 Johnny H. Hansen, GTO. Contents. Directional System Microphone alignment Dual Microphone Considerations Parallel microphone manufacture Front & Back microphone orientation ITE / Halfshell / ITC / CIC CIC Issues: Sizing Tool

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Canta ITE’s

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  1. Global Technical Operations Canta ITE’s March 2001 Johnny H. Hansen, GTO

  2. Contents • Directional System • Microphone alignment • Dual Microphone Considerations • Parallel microphone manufacture • Front & Back microphone orientation • ITE / Halfshell / ITC / CIC • CIC Issues: • Sizing Tool • Removal Tool Global Technical OperationsJanuary 2001

  3. Directionality features. Digital Dynamic Directionality • Digital Dual Microphone Technology • Adaptive Directionality • Active Microphone Matching Global Technical OperationsJanuary 2001

  4. Digital Dual Microphone Technology Global Technical OperationsJanuary 2001

  5. Angle Gain Front Back Polar Pattern 0 30 330 0 50 60 45 300 60 120 28 180 ~0 dB 50 40 30 20 10 90 120 240 150 210 Global Technical OperationsJanuary 2001 180

  6. Different Polar Patterns Supercardioid Cardioid Omnidirectional Bidirectional Hybercardioid Global Technical OperationsJanuary 2001

  7. Polar Patterns Considerations What determines the Polar Pattern of a Directional System ? The ratio of the internal electronic time delay and the external time delay. Global Technical OperationsJanuary 2001

  8. -1 Digital Dual Microphone Technology Speed of Sound = 343 m/sec. Canta Microphone Spacing = 10 mm + Time Delay Back Front Global Technical OperationsJanuary 2001

  9. Dual Microphone ITE’s • Microphone spacing: 10 mm • Microphone must be: Horizontal. 10 mm Front Back Global Technical OperationsJanuary 2001

  10. Misaligned Microphones 00 30o Global Technical OperationsJanuary 2001

  11. 10 c a COS(B) = 9 8 7 COS(B) Mic. spacing 6 Act. mic.spacing = 5 4 3 a 2 B 1 c 0 0 10 20 30 40 50 60 70 80 90 Effect of misaligned Microphones Actual mic. spacing Degrees misaligned mics. Global Technical OperationsJanuary 2001

  12. Quiz Impression A B Global Technical OperationsJanuary 2001

  13. Answer to Quiz A B Global Technical OperationsJanuary 2001

  14. A B Importance of Placement Key Global Technical OperationsJanuary 2001

  15. Microphone Orientation Marking During impression taking a microphone placement key must be used in order to indicate the correct orientation of the microphones. • Instruct the client to look straight ahead at a point at eye level. • Place the placement key at a horizontal position. Global Technical OperationsJanuary 2001

  16. Parallel Microphone Manufacture 1 Make a marking on the investment according to marks from placement key Transport this marks to the shell Global Technical OperationsJanuary 2001

  17. Parallel Microphone Manufacture 2 • Place the shell on the faceplate • Align marks on shell with guidelines on faceplate • Scratch a line around the shell Guidelines • Erase marks on shell • Mount shell after scratched line Scratched line Global Technical OperationsJanuary 2001

  18. Active Microphone Matching Global Technical OperationsJanuary 2001

  19. Active Microphone Matching • Danalogic use matched microphones • Digital 5000 match once with FONIX • Canta is matched with FONIX and keeps the matching updated all the time. - 1,2 dB + 0.5 dB When changing microphone(s) or hybrid remember to match with FONIX +1.2 -0.5 Coyote 1.5 Global Technical OperationsJanuary 2001

  20. Telecoils & Loop systems Global Technical OperationsJanuary 2001

  21. Telecoil Voltmeter 1 sec. = 1 Hz. 1000 times/sec. = 1kHz Global Technical OperationsJanuary 2001

  22. In a solenoid the iron core is for collecting and rectifying the b-fields Flux = b-fields in an area Telecoil Voltmeter Global Technical OperationsJanuary 2001

  23. Misaligned telecoil B-field Global Technical OperationsJanuary 2001

  24. - + Magnetic field (b-field) Few cm Near field + - Loop system Global Technical OperationsJanuary 2001

  25. Loop system - field intensity 10 dB 5 dB 0 dB 2 m 2 m 1 m 1 m Global Technical OperationsJanuary 2001

  26. Magnetic Field Lines Telecoil Magnetic Field Lines Telecoil Coil Coil Coil Telecoil - measuring Frye Interacoustic Global Technical OperationsJanuary 2001

  27. Telecoil Global Technical OperationsJanuary 2001

  28. Mounting Telecoil - loop systems • Turn on the instrument • Listen to the instrument in Telecoil position • Move the coil until noise from radiation is at minimum • Observe that the coil is within scratched scratched line and in a vertical position • Glue the coil in position Global Technical OperationsJanuary 2001

  29. Front Back Front / Back Microphone - 312 faceplate Right Left Global Technical OperationsJanuary 2001

  30. Front / Back Microphone - 13 faceplate Front Right Back Left Global Technical OperationsJanuary 2001

  31. ITE 740-D & 440-D Half-Shell • Standard • 312 battery • Programmable Telecoil Global Technical OperationsJanuary 2001

  32. ITE 750-D & 450-D Full-Shell • Option • 13 battery (Full-Shell only) Global Technical OperationsJanuary 2001

  33. ITC 730 & 430 • Standard • 312 battery • Option • Size 10 battery • Programmable Telecoil Global Technical OperationsJanuary 2001

  34. CIC 710 • Standard • Size 10 battery • Removal Cord Global Technical OperationsJanuary 2001

  35. Canta CIC - Sizing Tool Sizing Tool Kit (P/N 10159700) Global Technical OperationsJanuary 2001

  36. Canta CIC - Removal Tool Complete CIC Shell, Faceplate and Removal Cord Complete CIC Electronics Assembly: Receiver, Hybrid, Microphone, Contact Module and Battery Door CIC Module Removal Tool Global Technical OperationsJanuary 2001

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