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主题:[原创]在微型喇叭中加助听线圈的作用

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  发帖心情 Post By:2007-7-11 14:20:23 [显示全部帖子]

Hearing Aid Compliance is a principle enshrined in the law of the United States.

The Hearing Aid Compatibility Act of 1988 (HAC Act) requires that the Federal Communications Commission (FCC) ensure that all telephones manufactured or imported for use in the United States after August 1989, and all "essential" telephones are hearing aid-compatible. "Essential" phones are defined as "coin-operated telephones, telephones provided for emergency use, and other telephones frequently needed for use by persons using such hearing aids." These might include workplace telephones, telephones in confined settings (like hospitals and nursing homes), and telephones in hotel and motel rooms. Secure telephones, as well as telephones used with public mobile and private radio services, are exempt from the HAC Act. "Secure" phones are defined as "telephones that are approved by the U.S. Government for the transmission of classified or sensitive voice communications."

In 2003, the FCC adopted rules to make digital wireless telephones compatible with hearing aids and cochlear implants. Although analog wireless phones do not usually cause interference with hearing aids or cochlear implants, digital wireless phones sometimes do because of electromagnetic energy emitted by the phone's antenna, backlight, or other components. The FCC has set a timetable for the development and sale of digital wireless telephones that are compatible with hearing aids. This effort will greatly increase the number of digital wireless telephones that are hearing aid-compatible.



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  发帖心情 Post By:2007-7-11 14:32:23 [显示全部帖子]

Hearing aid compatible

Hearing aid compatibility (HAC) means that a device emits enough electromagnetic signal to be picked up and amplified by a T-coil equipped hearing aid. This allows the user to hear the audio output of the product without using the microphone setting on the hearing aid. Many kinds of telephones are required to be hearing aid compatible; use this HAC Guideline link for more information on these requirements.

Wireline and cordless telephones sold in the United States must be hearing aid compatible after January 1, 2000.



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