Digital pitch shifter

专利名称：Digital pitch shifter

发明人：Iwaooji, Makoto, c/o Hamura R & D Center申请号：EP92103906.1申请日：19920306公开号：EP0504684A3公开日：19940112

专利附图：

摘要：Waveform data written in a RAM 2 based on write addresses is always read outas two waveform data from two read addresses 1 and 2 designated by a CPU 1, and twointerpolation data 1 and 2 are formed. A smaller address difference A between the writeaddress and the read address 1 is multiplied with the interpolation data 1 as an envelope

value to obtain cross-fade data 1. Similarly, cross-fade data 2 corresponding to the readaddress 2 is obtained. The two items of cross-fade data 1 and 2 are added to each otherto obtain output waveform data. An envelope value of waveform data near a waveformdiscontinuous point becomes almost zero, and click noise can be eliminated.

申请人：CASIO COMPUTER COMPANY LIMITED

地址：6-1, 2-chome, Nishi-Shinjuku Shinjuku-ku Tokyo 160 JP

国籍：JP

代理机构：KUHNEN, WACKER & PARTNER

更多信息请下载全文后查看