Apparatus for storing and reading out periodic waveforms

摘要: The present invention is directed to a system for storing and reading out periodic waveshapes. utilizes the even and/or odd symmetry of waveform in such way that only sample points one-half need be stored memory device. When read from memory, unstored second half are recreated, using inherent samples waveform. capacity storage device can then cut half, reducing substantially cost system. If desired not symmetrical, it converted into an equivalent having identical power spectrum but different phasing which created symmetrical. used activate audio device, ear listener unable discern difference between one. This invention, therefore, has particular utility electronic musical instruments.