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BodyModel Factoring
In commuted synthesis, it is often helpful to factor out the
leastdamped resonances in the body model for implementation in
parametric form (e.g., as secondorder filters, or ``biquads'').
The advantages of this are manifold, including the following:
 The excitation table is shortened (now containing only the most damped modal components).
 The excitation table signaltoquantizationnoise ratio is improved.
 The most important resonances remain parametric, facilitating realtime control. In other words, the parametric resonances can be independently modulated to produce interesting effects.
 Multiple body outputs become available from the parametric filters.
 Resonators may be already available in a separate effects unit, making
them ``free.''
 A memory vs. computation tradeoff is available for cost optimization.
Techniques for carrying out this factorization in practice are
discussed in §8.8 [230].
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