通过改变频率来改变音乐的音调，升调或降调都可以。另外还有移相（phaser.c)及反相(reverse.c)两个源程序文件-by changing the frequency to change the tone music, or transfer or demotion can. Another phase shifter (phaser.c) and RP (reverse.c) 2 source files

A source for an pitch shifter DSP audio effect. Free for use and modify. Compilable with Delphi >= 5.0

soundtouch实现含变速、变调、变速同时变调-soundtouch containing variable speed, pitch shifter, variable speed simultaneously sandhi