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A new implementation of the Silicon Audio Player based on an MPEG/audio decoder LSI

机译:基于MPEG /音频解码器LSI的Silicon Audio Player的新实现

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摘要

A new implementation of the Silicon Audio player is presented. It decodes data which has been encoded by the MPEG/Audio Layer II algorithm standardized by the ISO (International Standardization Organization). The encoded data is stored in a semiconductor memory card. Decoding is carried out by an MPEG/audio decoder chip. Thanks to this dedicated LSI chip, the power consumption of the player is reduced so that the player could be driven by four nickel-metal hydride batteries for four and a half hours. Since the Silicon Audio player has no mechanical movement, it is robust against vibration that has been a serious problem for portable audio players. The recording time is defined as a function of the memory-card capacity and the compression ratio. Assuming one eighth compression with a sampling rate of 48 kHz, a 24-minute recording is possible with a 32-Mbyte memory card.
机译:提出了Silicon Audio播放器的新实现。它对通过ISO(国际标准化组织)标准化的MPEG / Audio Layer II算法编码的数据进行解码。编码后的数据存储在半导体存储卡中。解码由MPEG /音频解码器芯片执行。由于采用了这种专用的LSI芯片,播放器的功耗得以降低,因此可以由四个镍氢电池驱动播放器四个半小时。由于Silicon Audio播放器没有机械运动,因此坚固耐用,对于便携式音频播放器来说,这是一个严重的问题。记录时间定义为存储卡容量和压缩率的函数。假设以48 kHz的采样率进行八分之一压缩,则使用32 MB的存储卡可以进行24分钟的记录。

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