© Copyright 2000 Siemens Information & Communication Products - All Rights Reserved Presentation To EU Ministerial ConferenceRev – 04/11/00 - HSB WIRELESS.

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Presentation transcript:

© Copyright 2000 Siemens Information & Communication Products - All Rights Reserved Presentation To EU Ministerial ConferenceRev – 04/11/00 - HSB WIRELESS TELEPHONES AND HEARING AIDS Stephen Berger Siemens Austin, Tx. USA

© Copyright 2000 Siemens Information & Communication Products - All Rights Reserved Presentation To EU Ministerial ConferenceRev – 04/11/00 - HSB WIRELESS TELEPHONES AND HEARING AIDS The Issue The RF transmission from a wireless Telephone can cause interference (a buzz) in some hearing aids. Hearing Aid users will hold a wireless telephone very close to their hearing aid, where the RF field is very high. Hearing Aids in T-Coil mode have special problems due their normal operating characteristics.

© Copyright 2000 Siemens Information & Communication Products - All Rights Reserved Presentation To EU Ministerial ConferenceRev – 04/11/00 - HSB WIRELESS TELEPHONES AND HEARING AIDS

© Copyright 2000 Siemens Information & Communication Products - All Rights Reserved Presentation To EU Ministerial ConferenceRev – 04/11/00 - HSB WIRELESS TELEPHONES AND HEARING AIDS

© Copyright 2000 Siemens Information & Communication Products - All Rights Reserved Presentation To EU Ministerial ConferenceRev – 04/11/00 - HSB WIRELESS TELEPHONES AND HEARING AIDS

© Copyright 2000 Siemens Information & Communication Products - All Rights Reserved Presentation To EU Ministerial ConferenceRev – 04/11/00 - HSB WIRELESS TELEPHONES AND HEARING AIDS

© Copyright 2000 Siemens Information & Communication Products - All Rights Reserved Presentation To EU Ministerial ConferenceRev – 04/11/00 - HSB WIRELESS TELEPHONES AND HEARING AIDS

© Copyright 2000 Siemens Information & Communication Products - All Rights Reserved Presentation To EU Ministerial ConferenceRev – 04/11/00 - HSB WIRELESS HEARING AID COMPATIBILITY HISTORY & PROCESS HISTORY FCC Summit US, European & Australian Research Started IEC & Australian By-Stander Project Approved ANSI User Project Approved - August ‘96 Mature Draft & Initiation of Validation - December ‘97 1st Meeting on Int’l harmonization - May ’98 OU Objective & Subjective Study- Summer ’99 ANSI Balloting Initiated- Nov. ’99 IEC Harmonization Effort- Dec. ‘99

© Copyright 2000 Siemens Information & Communication Products - All Rights Reserved Presentation To EU Ministerial ConferenceRev – 04/11/00 - HSB WIRELESS HEARING AID COMPATIBILITY ANSI STANDARD C63.19 PROJECT SCOPE SCOPE: ANSI C63.19 Methods of Measurement and Parametric Criteria for Hearing Aid Compatibility (HAC) with Wireless Communication Devices

© Copyright 2000 Siemens Information & Communication Products - All Rights Reserved Presentation To EU Ministerial ConferenceRev – 04/11/00 - HSB WIRELESS HEARING AID COMPATIBILITY ANSI STANDARD C63.19 PARTICIPATION DURING THE PROJECT HEARING AID INDUSTRY SUB-TOTAL - 21 participants from 15 organizations WIRELESS INDUSTRY SUB-TOTAL - 44 participants from 14 organizations OTHER ORGANIZATIONS SUB-TOTAL - 25 participants from 16 organizations GRAND TOTAL 90 participants from 45 organizations CURRENT ACTIVE PARTICIPANTS 30 participants from 19 organizations

© Copyright 2000 Siemens Information & Communication Products - All Rights Reserved Presentation To EU Ministerial ConferenceRev – 04/11/00 - HSB WIRELESS HEARING AID COMPATIBILITY Current Situation Advancement in Products RF Immune Hearing Aid Components Compatibility a Competitive Advantage in HA Market Phone Neckloops & Other Accessories CTIA Access Education Effort Research & Validation RERC study of intelligibility OU Validation Studies HAMPIIS Validation Studies ANSI Beginning Balloting Process

© Copyright 2000 Siemens Information & Communication Products - All Rights Reserved Presentation To EU Ministerial ConferenceRev – 04/11/00 - HSB WIRELESS HEARING AID COMPATIBILITY Summary – OU Validation Studies Objective Study – 10 Phones / 8 HA Predicted Result –38.8 % Excellent –28.8% Recommended –67.6% Recommended or Better Actual Result –41.7 % Excellent –26.4% Recommended –68.1% Recommended or Better Test Accuracy –51.4% Exact Match –93.1% Exact Match or Better Than Predicted Performance

© Copyright 2000 Siemens Information & Communication Products - All Rights Reserved Presentation To EU Ministerial ConferenceRev – 04/11/00 - HSB WIRELESS HEARING AID COMPATIBILITY Summary – OU Validation Studies Subjective Study – 18 Subjects / 6 Phones Test Accuracy 6 Hearing Aids were good with all phones Some Hearing Aids were not acceptable with any phone There is a middle ground where a Hearing Aid / Phone combination must be tried by the user. –Some users will find the combination perfectly acceptable –Other users, with the same test results will find the combination unaccptable

© Copyright 2000 Siemens Information & Communication Products - All Rights Reserved Presentation To EU Ministerial ConferenceRev – 04/11/00 - HSB WIRELESS HEARING AID COMPATIBILITY TECHNICAL ISSUES MATCH HEARING AID IMMUNITY WITH WIRELESS HANDSET EMISSIONS FOR T-COIL MODE: PROVIDE SUFFICIENT SIGNAL STRENGTH AND SIGNAL QUALITY

© Copyright 2000 Siemens Information & Communication Products - All Rights Reserved Presentation To EU Ministerial ConferenceRev – 04/11/00 - HSB WIRELESS HEARING AID COMPATIBILITY ANSI STANDARD C63.19 USABILITY CATEGORIES  USABLE  NORMAL USE  EXCELLENT PERFORMANCE

© Copyright 2000 Siemens Information & Communication Products - All Rights Reserved Presentation To EU Ministerial ConferenceRev – 04/11/00 - HSB WIRELESS HEARING AID COMPATIBILITY ANSI STANDARD C63.19 MANY POSSIBLE SOLUTIONS

© Copyright 2000 Siemens Information & Communication Products - All Rights Reserved Presentation To EU Ministerial ConferenceRev – 04/11/00 - HSB WIRELESS HEARING AID COMPATIBILITY ANSI STANDARD C63.19 MANY POSSIBLE SOLUTIONS

© Copyright 2000 Siemens Information & Communication Products - All Rights Reserved Presentation To EU Ministerial ConferenceRev – 04/11/00 - HSB WIRELESS HEARING AID COMPATIBILITY ANSI STANDARD C63.19 USER HAS CHOICES For Example: Owner of a U2 hearing aid will get good to excellent performance with a U1 or higher phone Owner of a U2 phone will get good to excellent performance with a U1 or higher hearing aid

© Copyright 2000 Siemens Information & Communication Products - All Rights Reserved Presentation To EU Ministerial ConferenceRev – 04/11/00 - HSB WIRELESS HEARING AID COMPATIBILITY ANSI STANDARD C63.19 WHAT ARE THE TESTS? (For Hearing Aids) The near-field EM immunity is assessed. The HA is tested using a dipole. The HA is tested near the dipole tip for E-Field immunity and near the dipole center for H-Field immunity. There is no HA T-Coil mode test, other than RF immunity. The HA is assumed to be designer to ANSI S-22 for its T-Coil performance.

© Copyright 2000 Siemens Information & Communication Products - All Rights Reserved Presentation To EU Ministerial ConferenceRev – 04/11/00 - HSB WIRELESS HEARING AID COMPATIBILITY ANSI STANDARD C63.19 DIPOLE TEST LOCATIONS FOR HEARING AIDS

© Copyright 2000 Siemens Information & Communication Products - All Rights Reserved Presentation To EU Ministerial ConferenceRev – 04/11/00 - HSB WIRELESS HEARING AID COMPATIBILITY ANSI STANDARD C63.19 WHAT ARE THE TESTS? (For Wireless Handset) The near-field EM emissions are assessed. The phone is categorized based on the peak in a contiguous 2/3 of the area normally used by the HA. A non-mandatory T-Coil mode test is available. Compliance with the T-Coil test allows addition of the “T”, for T-Coil, designation to the category classification. The T-Coil test includes a requirement for signal level, audio frequency response and signal quality.

© Copyright 2000 Siemens Information & Communication Products - All Rights Reserved Presentation To EU Ministerial ConferenceRev – 04/11/00 - HSB WIRELESS HEARING AID COMPATIBILITY ANSI STANDARD C63.19 EM ASSESSMENT AREA ON HANDSET

© Copyright 2000 Siemens Information & Communication Products - All Rights Reserved Presentation To EU Ministerial ConferenceRev – 04/11/00 - HSB WIRELESS HEARING AID COMPATIBILITY ANSI STANDARD C63.19 T-COIL TEST POSITIONS ON HANDSET

© Copyright 2000 Siemens Information & Communication Products - All Rights Reserved Presentation To EU Ministerial ConferenceRev – 04/11/00 - HSB WIRELESS HEARING AID COMPATIBILITY Summary A significant effort has been underway since 1995 to assure that hearing aid users could use digital wireless devices. Both industries have made significant advances and have many products which work quite well together. IEC & Australia have standards for by-stander protection. The ANSI C63.19 Standard has begun its final ballot. Efforts to harmonize the ANSI Standard with an IEC draft are underway. Carriers are starting to require hearing aid compatible phones in their contracts.