[CM] removing harmonic content from sound (solutions for real-time use)

[Anders Vinjar]

Hi Orm, thanks for nice suggestions!

Yes, ATS in various incarnations has been very useful, and some of its
siblings such as sms, spear, pvanal, svp, ceres etc.

For off-line processing i'd normally try one of those, or perhaps
LPC-based techniques.

My problem is the real-time requirements (no off-line pre-analysis), and
not-very-large latency.  Do you think ATS could provide solutions for
those?

The Median Filtering approach of FitzGerald is perfect!  But needs
several frames to track partials to distinguish from non-harmonic
content (as ats etc.).  Probably as close as i'll come...

I was hoping there might be some 'simpler' solution - autocorrelation,
wavelets (wild suggestions, but why not...?)

Perhaps I could extract typical samples of noise-type qualities expected
to come in the input sounds, and 'teach' some analysis technique to
recognize something similar?

-anders