- In practical implementations of acoustic tubes using digital
waveguide synthesis, it is necessary to account for the losses
associated with viscous drag and thermal conduction
which take place primarily within a thin boundary layer along the bore
walls.
- Below is a waveguide model of a cylindrical tube with commuted wall loss
filters,
, a reflection filter
and a
transmission filter
.
- Though these losses are distributed over the length of
the tube, it is more efficient to lump these effects by
commuting a characteristic digital filter to each end of the
waveguide.
``MUS 206: Modeling Acoustic Tubes and Wind Instrument Bores/Bells''
by Tamara Smyth,
Department of Music, University of California, San Diego (UCSD).
Download PDF version (wind.pdf)
Download compressed PostScript version (wind.ps.gz)
Download PDF `4 up' version (wind_4up.pdf)
Download compressed PostScript `4 up' version (wind_4up.ps.gz)
Copyright © 2019-05-22 by Tamara Smyth.
Please email errata, comments, and suggestions to Tamara Smyth<trsmyth@ucsd.edu>