The main useful implementation of the audio perceptual coder (OCF) in hardware (Krasner's components was also cumbersome and gradual for practical use), was an implementation of the psychoacoustic change coder determined by Motorola 56000 DSP chips. The smallest MP3 gamers usually only have an extremely very small display screen that http://fmw.ppij.com/question2answer/index.php?qa=user&qa_1=rainpickle18