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Dual-Mode Speech CODEC Unit for a PDC System

机译:用于PDC系统的双模式语音编解码器单元

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摘要

Digital cellular telephone services, standardized throughout Japan, are currently being rendered by the full-rate system since 1994. In addition, half-rate system specifications have been standardized as a new-generation speech coding system. Amid these movements, NEC has developed a full-rate/half-rate dual mode speech CODEC unit for use in the digital cellular base station system. What follows below is an outline of the full-rate and half-rate speech coding systems, with an introductory description of the recently developed speech CODEC unit.
机译:自1994年以来,全速率系统目前正在全日本范围内标准化数字蜂窝电话服务。此外,半速率系统规范已被标准化为新一代语音编码系统。在这些运动中,NEC开发了全速率/半速率双模式语音编解码器单元,用于数字蜂窝基站系统。下面是全速率和半速率语音编码系统的概述,并介绍了最近开发的语音编解码器单元。

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