如何使用Web音频API转换/调制音频缓冲区的频率?

I'm experimenting with the Web Audio API and my goal is to create a digital guitar where each string has an initial sound source of an actual guitar playing the string open and then I would like to generate all other fret position sounds dynamically. After some research into the subject (this is all pretty new to me) it sounded like this might be achieved by altering the frequency of the source sound sample. I'm experimenting with the Web Audio API and my