A NEW IMPLEMENTATION OF THE SILICON AUDIO PLAYER BASED ON AN MPEG AUDIO DECODER LSI/

A new implementation of the Silicon Audio player is presented. It deco des data which has been encoded by the MPEG/Audio Layer II algorithm s tandardized by ISO (International Standardization Organization). The e ncoded data is stored in a semi-conductor memory card. Decoding is car ried out by an MPEG/Audio decoder chip. Thanks to this dedicated LSI c hip, power consumption of the player is reduced so that the player cou ld be driven by; four nickel-metal hydride batteries for four and a ha lf hours. Since the Silicon Audio player has no mechanical movement, i t is robust against vibration that has been a serious problem for port able audio players. The recording time is defined as a function of the memory-card capacity and the compression ratio. Assuming one eighth c ompression with a sampling rate of 48 kHz, 24-minute recording is poss ible with a 32-Mbyte memory card.