Hilbert-Huang Transformation

On Apr 1, 4:06 pm, "wazerf...@gmail.com" <wazerf...@gmail.com> wrote:
> On Apr 1, 1:44 pm, dbd <d...@ieee.org> wrote:
>
>
>
> > On Mar 31, 10:44 pm, "wazerf...@gmail.com" <wazerf...@gmail.com>
> > wrote:
>
> > > Anyone heard of it?  Is it the next best thing since sliced bread and
> > > the Fourier Transform?
>
> > It depends on whether you are buying it or selling it.
>
> > > I just discovered it and it seems to have some interesting
> > > potential...
>
> > > "The HHT technology is a highly efficient, adaptive, and user-friendly
> > > set of algorithms capable of analyzing time-varying processes.
> > > Designed specifically for nonlinear and nonstationary signals, HHT can
> > > be used to analyze data in a wide variety of applications. The
> > > algorithms also provide increased accuracy when used to analyze linear
> > > and stationary signals.
>
> > > When linear, stationary datasets are used, HHT provides the same
> > > solution as the Fast Fourier Transform. However, Fourier Transforms
> > > are unsuitable for applications that use nonlinear and/or
> > > nonstationary signals. In addition, other technologies, such as
> > > wavelet transforms, cannot resolve intra-wave frequency modulation,
> > > which occurs in signal systems composed of multiple varying signals.
> > > HHT can be used in these applications to provide an accurate method
> > > for analyzing nonlinear and/or nonstationary signals or data. "
>
> > > Other info:http://www.worldscibooks.com/mathematics/etextbook/5862/5862_chap1.pd...
>
> > You sound like you are pitching it, just not very honestly.As a simple
> > rule of thumb, if you want to see iimproper choice of FFT based
> > techniques, see early wavelet papers, If you want to see improper
> > choice of FFT based techniques and improper choice of wavelet based
> > techniques see HHT papers. However, when you see explanations that
> > jump between finite/discrete domains (FFT) and continuous/infinite
> > domains (Fourier Transform) as if the subject hasn't changed, the
> > misrepresentations are often due to ignorance.
>
> > Dale B. Dalrymple
>
> Yes my quote came from the NASA website:http://techtransfer.gsfc.nasa.gov/HHT/
> and they _are_ pitching it!

They have been pitching it for more than a decade.

Where is the list of technology partners who have made a profit from a
delivered system they have embedded the HHT in? How have they used it?

There are at least a few that have profited from the FFT and it's
applications.

Dale B. Dalrymple