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(续上期)叁MPEG-2AACMPEG-2标准是MPEG组织于1994年11月针对数字电视/影像提出的,其特点是音质更加完美而压缩比更加大(1∶15)。MPEG组织在早期的《ISO/IEC11172-3》(MPEG-1标准)中,规定了MPEG-1标准支持采样率为32kHz、44.1kHz和48kHz的Mono(单声道)及Stereo(立体声)或Dualmon
(Continued) MPEG-2A AC MPEG-2 standard was proposed by the MPEG organization for digital TV / video in November 1994. It is characterized by more perfect sound quality and larger compression ratio (1:15). The MPEG organization defined the MPEG-1 standard as Mono and Stereo with 32 kHz,