| 摘要 |
PURPOSE:To enable a compression system to be selected by a user and to perform the magnification and compression processings of voice data without interposing a processor by providing a compression route switching circuit for the voice data, etc. CONSTITUTION:The compression route switching circuit 42 for the voice data is connected to a CODEC 43, an SIO 39, and an ADPCM conversion circuit 40. And the compression route of the voice data is decided to a route 11 in a non-compression mode, a route 12 in a compression mode, and a route 13 in compression/magnification mode based on an instruction from the user. And the route 12 is set for a voice on which no voice editing processing is applied, and it is accumulated in a RAM 38 and an external memory device 33 accompanying by compression via the circuit 40. Also, the route 13 is set for the compression/magnification processing of accumulated voice data, and it is processed with the SIO 39 and the circuit 40. Thereby, it is possible to reduce the memory capacity of the RAM 38 and the device, and also, hardware can be effectively used, and the processing efficiency of the processor MPU 36 for voice storage control can be improved. |
