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Digital acoustic reproducing device

阅读:829发布:2022-09-02

专利汇可以提供Digital acoustic reproducing device专利检索,专利查询,专利分析的服务。并且PURPOSE:To obtain an economical digital acoustic reproducing device by sampling a voice signal at a frequency lower than the sampling a music signal and then quantizing and storing it with less bits than the music signal, and performing multiplex demodulation on time-division basis. CONSTITUTION:A file 15 is constituted by using a magnetic bubble memory, wherein a music and a voice signal quantized to 12 bits are stored by compressing music data to 6 bits and voice data to 4 bits. Data on the file number of the file 15 is specified by a switch register 26 and read out by a control microcomputer 25 to be supplied to a multiplex demodulation arithmetic part 20 through readout buffer memories 16 and 17 and shift registers, 18 and 19. The arithmetic part 20 performs time-division processing and in audio mode, the frequency of arithmetic is reduced to half. The output is processed by DA conversion at parts 21 and 22, and the resulting signals are outputted as music and voice simultaneously over channels A and B respectively. Thus, the utilization rate of the memory is improved six times.,下面是Digital acoustic reproducing device专利的具体信息内容。

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