A very simple string model

A very simple string model can be implemented using a single delay line and our simple first-order low pass filter to model frequency-dependent loss.

**Figure 4:** A very simple model of a rigidly terminated string.
$\begin{figure}\centerline{\scalebox{1}{% \input{kspluck.pstex_t}}}\end{figure}$

All losses have been lumped to a single observation point in the delay line, and approximated with our first-order simple low-pass filter

$\displaystyle y(n) = x(n) + x(n-1)$

Different sounds can be created by changing this filter.

The Karplus-Strong Algorithm may be interpreted as a feedback comb filter (with lowpassed feedback) or a simplified digital waveguide model.

How do you pluck the string? (noise burst.)