Browse Prior Art Database

FIRE SAFETY SPEAKER MICROPHONE

IP.com Disclosure Number: IPCOM000006124D
Original Publication Date: 1991-Apr-01
Included in the Prior Art Database: 2001-Dec-05
Document File: 1 page(s) / 64K

Publishing Venue

Motorola

Related People

Daniel L. Steadman: AUTHOR

Abstract

The Fire Safety Speaker Microphone (FSSM) solves the problem of a lack of adequate communi- cation capability for those wearing face masks, breathing apparatus, or protective body suits. Any of the above items essentially block the wearer's speaking and hearing audio paths. Consequently, verbal communication between the wearer and others in the vicinity is rendered impossible. Additionally, the FSSM provides for typical 2-way communication through the user's portable radio.

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MOTOROLA INC. Technical Developments Volume 12 April 1991

FIRE SAFETY SPEAKER MICROPHONE

by Daniel L. Steadman

  The Fire Safety Speaker Microphone (FSSM) solves the problem of a lack of adequate communi- cation capability for those wearing face masks, breathing apparatus, or protective body suits. Any of the above items essentially block the wearer's speaking and hearing audio paths. Consequently, verbal communication between the wearer and others in the vicinity is rendered impossible. Additionally, the FSSM provides for typical 2-way communication through the user's portable radio.

  Components of the system include a bone- conducting earpiece microphone, especially designed remote speaker microphone, and portable radio. The bone-conducting earpiece microphone is worn in the ear and plugs into the remote speaker microphone which can be worn anywhere on the body but most effectively on the chest area. The remote speaker mike connects to the portable radio, which can also be worn anywhere on the body. Accessible features on the new remote speaker microphone include a Push-To-Talk (PTT) button, volume control, and 3-circuit, 3.5mm jack.

  Usage functionality: When a person in the vicinity speaks, the audio is picked by the remote speaker mike and routed to the earpiece mike to be heard by the user. Loudness can be adjusted from the volume control on the portable radio. When the user speaks, the audio is picked up within the ear canal by the earpiece microphone and...