Single side band multiplex signal radio relay
Audio channel stacking with speech compression for narrow band transmission with provision for dialed calls
Method and apparatus for time companding an analog signal
Frequency division multiplexed acknowledge back paging system
Code division multiplexed acknowledge back paging system
Dual mode radio transceiver for an SSB communication system
Voice messaging method for selective call receivers
Subscriber RF telephone system for providing multiple speech and/or data singals simultaneously over either a single or a plurality of RF channels
Method for time-scale modification of signals
ApplicationNo. 764656 filed on 12/11/1996
US Classes:370/313, Portable address responsive receiver340/7.43, Particular message and address format (e.g., POCSAG, FLEX, etc.)340/7.57, Audible370/202, AMPLITUDE COMPRESSION OR EXPANSION370/206, Quadrature carriers370/491, Pilot370/521, Time compression or expansion455/70, Receiver control signal originates at message transmitter704/500, AUDIO SIGNAL BANDWIDTH COMPRESSION OR EXPANSION704/503AUDIO SIGNAL TIME COMPRESSION OR EXPANSION (E.G., RUN LENGTH CODING)
ExaminersPrimary: Ramirez, Ellis B.
Assistant: Smith, Demetra R.
Attorney, Agent or Firm
International ClassH04B 007/00
AbstractThe present invention comprises a method for compressing a plurality of voice signals within a voice communication resource (see FIG. 6) having a given bandwidth within a voice communication system (100). The method comprises the steps of subchanneling the voice communication resource into a plurality of subchannels (441, 442, 443), placing a pair of the plurality of voice signals (401, 402) on a subchannel (441); modulating the pair of the plurality of voice signals (401, 402) about a pilot signal (581) within the subchannel (441) using single sideband modulation; and compressing the time of each of the voice signals (401, 402) within the plurality of subchannels (441, 442, 443), wherein these step provide a compressed voice signal.