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Browse Prior Art Database

AUDIO LOGGE/RECONSTRUCTOR

IP.com Disclosure Number: IPCOM000007224D
Original Publication Date: 1994-Jun-01
Included in the Prior Art Database: 2002-Mar-06
Document File: 1 page(s) / 49K

Publishing Venue

Motorola

Related People

Richard Comparey: AUTHOR

Abstract

Existing logging recorders require manual inter- vention to reconstruct conversations; they just log audio; someone has to listen to each channel to deter- mine when a particular user was speaking. This is a timely and expensive process. It is also prone to errors because the radio user may have changed channels to carry on portions ofthe conversation.

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Technical Developments Volume 22 June 1994

AUDIO LOGGEWRECONSTRUCTOR

by Richard Comparey

  Existing logging recorders require manual inter- vention to reconstruct conversations; they just log audio; someone has to listen to each channel to deter- mine when a particular user was speaking. This is a timely and expensive process. It is also prone to errors because the radio user may have changed channels to carry on portions ofthe conversation.

  New logging recorder interfaces could provide audio plus the raw data of the RF activity, signaling and embedded data on each RF Channel. This raw data could be made available to a processor which can gather and store information for each channel. The processor could then determine the start and end of each transmission on each channel by each radio ID.

  Existing preamble PTT ID signaling schemes would be prone to errors resulting from loss of the ID due to fades, RF collisions, etc. Also, the end of

conversations would be difficult to determine.

  With embedded PM ID signaling, however, the audio, channel, and PTT ID information could be stored in an Audio Logger/Reconstructor.

  Someone wishing to reconstruct an RF com- munication could specie search criteria, eg. the time interval and radio ID's to be included in the play- back of the recorded audio. The Reconstructor would then process the stored information to play back the audio from the specified PTT IDS for the desired time interval.

  Thus, an Audio Logger/Reconstru...