[Clam-devel] Re: gsoc project - real time synthesizer for a woodwind instrument

[Han, Yushen]

Hi, Greg and Pau

I did some tests on SDIF files out of wave files and so far it works fine.
Now I am trying to find out the loop of a single note and store the loop in
.xml file.
Here I have questions for each of you separately:

(1) for Greg
I compiled your makeLoop (from the examples folder) successfully.
But if I specify the start time and the end time of the steady state,
makeLoopExe always "calculate 0 EarthMover's distance".
If I do not specify the time, makeLoopExe would never finish. ( it gives
dots ".................." )

Did you notice this problem before? Maybe it only happened to me.

Also, in your previous message you said you "turned off the database lookup
function".
Can you please explain more about what "the lookup function" is supposed to
do and why you turned it off?

( I could see that you disabled the residual part in the SDIFInConfig. But I
am not sure if this is what you were talking about... )

(2) for Pau:
So far we have not decide which woodwind instrument we should work with.
Should I work on Saxophone or Oboe?
Do we have annotated saxophone notes from SALTO with all loop identified?

I cut and labeled 72 oboe notes recorded in an anechoic chamber by hand (24
pitches C4-B5 * 3 different dynamics).
It will take a while to find the loop for those notes. Before I proceed, I
would like to make sure I am working on the right instrument :-)


Best regards,
Han, Yushen

On Sun, May 18, 2008 at 10:35 AM, Greg Kellum <greg.kellum at gmail.com> wrote:

> Hi,
>
> In response to point 3, I turned off the database lookup function at
> some point, because of an exception that kept occurring...  I can't
> remember whether I eventually fixed this or not.  I'll have to
> check...
>
> Greg
>
> On Sat, May 17, 2008 at 6:04 PM, Han, Yushen <yushen.han at gmail.com> wrote:
> > Hello, Pau
> >
> > Thanks for your concerns. Here is some update from me.
> >
> > 1. Based on Greg's last update, I am able to compile the command-line
> > version of continuousExcitationSynthesizer.
> > Also, I can read the XML file where the looping information is stored
> with
> > his metadata reader.
> > As for SDIF, I am able to use CLAM/examples/SDIF2Wav and Wav2SDIF to
> convert
> > between SDIF and WAV.
> >
> > 2. In the NetworkEditor, I still could not have "SDIFDatabaseProcessing".
> > (Greg had reported that he fixed this problem.)
> > Right now I don't really use the network editor but the command-line
> > executable version.
> >
> > To resume our remote debugging, last time you concluded
> > "It seems your OS is not loading some of the processings. To confirm
> > this: how many processings do you have in the 3D Audio category?
> > You should see 14."
> > However, I only had 1 processing - VectorBasedArrayPanning available
> after
> > compiling that 3D plugin.
> >
> > 3. I did some experiment with 12 oboe notes in one octave and concluded
> that
> > if there is only one source sounding,
> > the first 4 harmonics are quite in phase ( I only observe the first 4
> > harmonics). Therefore I was thinking that we may disregard the
> instantaneous
> > phase in the SMS. However, this is not true for an orchestra.
> >
> > "- [2+ days] To investigate the effect of slowly-changing phase changes
> > between different partials
> >     on the perception of the harmonic sound. If the slowly-change phase
> did
> > not affect the sound
> >     very much ( suppose all harmonics are all in phase ), further
> > simplification in synthesis
> >     could be done. This experiment is open to suggestion from the
> mentor."
> > I will write to you separately about that and more raw ideas.
> >
> > 4. Right now I am trying to modify Greg's code and Wav2SDIF example for:
> > "- [1-2 days] To synthesize with SMS with the analysis result (in a
> simple
> > setting).
> >   To produce some audible result to evaluate the performance of SMS
> > analysis/transformation."
> >
> > It seemed that the Wav2SDIF example had done the majority of the work.
> > I am studying the code but I don't know if I could improve this part.
> > Do you recommend me to read some updated documents on SDIF?
> > http://www.cnmat.berkeley.edu/SDIF/ does not seem to be very recent.
> >
> > 5. I apologize for my late updating.
> > I am thinking of keeping a blog on this project...
> >
> > Best regards,
> > Han, Yushen
> >
> >
> >
> >
> > On Sat, May 17, 2008 at 7:40 AM, Pau Arumí <parumi at iua.upf.edu> wrote:
> >>
> >> Hello Yushen,
> >>
> >> how is all doing? I'd like to hear in what you are up regarding your
> >> project.
> >>
> >> are you still blocked with the plugin installation? in that case is it
> >> possible for you have also a linux box?
> >>
> >> i'd like you to write some raw ideas about what to be implemented and
> >> some planning, and then i'll comment and keep refining the planning.
> >> is that ok?
> >>
> >> cheers!
> >> pau
> >>
> >>
> >
> >
>
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