为了满足日益提高的多媒体性能要求,高档CPU加快了时钟频 率,并增加了新的指令和片上逻辑以加快多媒体算法所需的计算速度。如今CPU 的时钟频率为166 至200MHz,只能处理一些复杂性低到中等的多媒体任务──软调制解调、声音重放以及MPEG解压,增强型CPU将会取而代之。 随着多媒体在多种场合应用得越来越多,人们要求进一步提高系统的多媒体处理能力。现在的多媒体系统应当 To meet increasing multimedia performance requirements, high-end CPUs accelerate clock speeds and add new instruction and on-chip logic to speed the computations required of multimedia algorithms. Today’s CPUs have clock speeds of 166 to 200 MHz and can only handle some of the less complex medium to medium multimedia tasks - soft modem demodulation, voice playback and MPEG decompression, and the enhanced CPU will be replaced. As multimedia is being used more and more on a variety of occasions, there is a need to further increase the multimedia processing capabilities of the system. The current multimedia system should be