Hi all,
I recently saw the promotional prospectus of a low-cost PC sound card
(called MaxiSound or so) and I was *really* disapointed with its specs.
compared to Csound. Specifically, it is said to use a 3rd order
polynomial scheme for wavetable interpolation, when Csound only accepts
linear (1st order) interpolation.
As you may agree this cannot be accepted ;-), I´d suggest at least 3 new

opcodes, called maybe
oscilp
tablep
deltapp
with an additional parameter to choose the polynomial degree used for
interpolated readout.
I´m not very sure about the improvement in the s/n ratio and in the
frequency response in relation to the degree of the Lagrange
interpolator. Maybe some of you have any clues. But it would be nice to
implement such feature.


Another question related to waveguide opcodes. Does deltapi (and delayw
btw) accept fractional sample delay lengths (well, fractional 1/kr
units) ? If not, is it expected to implement it soon? Otherwise it could

be difficult to tune a delay line at a precise high frequency, esp. at
low k-rates.
This is specially noticeable when developing waveguide models.