Plucking the String

Figure 17: Tapping into the $X$ th sample where the excitation signal is fed into the digital waveguide.

Returning to our two delay line implementation of the digital waveguide, we show how to excite our virtual string model with a clear mapping to the physical world. Figure 17 shows a digital waveguide where for each delay line, we have tapped into the $Xth$ sample. Here we input at each time-slice our excitation signal $e(n)$ .