Time-domain synthesis of conical bore instrument sounds
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- The memory-less reed function is derived using a real wave impedance at the air column input.
- The wave impedance for a conic frustum is frequency- and location-dependent.
- Direct coupling of the reed function to the shunt inertance element would produce a delay-free loop in the digital waveguide implementation.
- A wave digital filter approach can be used to avoid the delay-free loop (van Walstijn, 2002), though the reed function would still have to be rederived.