FAA Technical Center, Contracts Branch ACM-510, Atlantic City International Airport, NJ 08405

58 -- VOICE DIGITIZING EQUIPMENT FOR EVALUATION OF APPLICABILITY TO AIR TRAFFIC CONTROL APPLICATIONS SOL DTFA03- POC Anthony (Buzz) Cerino, (609) 485-5640. CBD announcement published on 4/14/95 is hereby replaced with the following: It is the intent of the FAA to evaluate current technology in the area of voice coding equipment to determine applicability for use in national and international air/ground communications. Suppliers willing to assist in this effort are encouraged to contact the above for the purpose of submitting equipment for evaluation. Subject equipment should consist of two parts: 1) a voice encoder and 2) a voice decoder. The voice encoder shall be capable of translating an input analog (voice) signal into a digital bit stream. The decoder shall perform the reverse operation. The following requirements shall apply: a) maximum bit rate of 4800 bps (including all FEC); b) good voice quality maintained down to a BER of 1x10-3; c) intelligibility should be maintained down to a BER of 2x10-2; d) intelligibility maintained at a maximum bit rate of 4000 bps (including all FEC) for special operations; e) operate in a half duplex push to talk (PTT) mode; f) maximum encode/decode delay of 80msec.; and g) frame size allowed: 4,5,6,8,10,12,15,20,24,30 ms. All submissions must include complete documentation on system operation, interfacing characteristics, and company policy regarding algorithm licensing and disclosure plans for international standardization and manufacturing. Any equipment/documentation submitted shall be considered proprietary and not be provided to any competitor. The FAA will not be responsible for any costs incurred by any contributor as a result of their participation, and there is no guarantee of any solicitation as a result of this study. Equipment should be submitted no later than June 30, 1995, after which no updates in software or hardware will be considered. All equipment/documentation will be returned following completion of the evaluation. Any questions regarding this CBD should be submitted in writing to Mr. Cerino via FAX @(609) 485-7336. (0150)

Loren Data Corp. http://www.ld.com (SYN# 0350 19950531\58-0001.SOL)