[Clam-devel] SMSSynthesis

[Xavier Amatriain]

That is exactly what I meant... only put in better words ;-) You got it!

Greg Kellum wrote:
> Hi Xavier,
>
> I wasn't sure what you meant by "doing a consistency check to make 
> sure whether the three output ports are connected or not."  And maybe 
> what I am about to suggest is actually what you meant, but what do you 
> think about checking inside the networked Do() whether all three ports 
> are connected and only computing the IFFTs for those ports which are 
> actually connected?  So, if only the sinuisuid + residual mixdown is 
> connected one would only do one IFFT rather than three.
>
> Best,
> Greg
>
> On 8/2/07, *Xavier Amatriain* <xavier at create.ucsb.edu 
> <mailto:xavier at create.ucsb.edu>> wrote:
>
>     Greg,
>
>     The SMSSynthesis class performs 3 IFFTs (not 2) simply because it aims
>     at outputing also 3 different audios (one for the residual,
>     one for the sinusoidal, and one for the addition of both). If you are
>     only interested in synthesizing the sum you should probably
>     add a Do overload (another one!!! aaarghh!) and for the networked
>     version (Do without params) do a consistency check to make
>     sure whether the three output ports are connected or not.
>
>     But, again, it does not deal with different IFFT sizes. By the
>     time the
>     Spectrums are synthesized they should be the same size
>     (because they have to be added for the complete synthesis among other
>     things).
>
>     Xavier
>
>     Greg Kellum wrote:
>     > Hi all,
>     >
>     > I've been doing some optimizing this week.  Trying to make the
>     > application that I've been working on run faster.  And I've been
>     > looking at the SMSSynthesis class and asking myself whether it is
>     > really necessary for this class to perform two IFFTs.  Apparently,
>     > SMSSythesis performs a separate IFFT for the sinusoidal peaks
>     and the
>     > residual, because it's possible that these two could use two
>     different
>     > IFFT sizes.  It would be nice if it only performed one IFFT in the
>     > case that they both had the same size.  Um...  I have been
>     looking at
>     > the configuration file for SMSSynthesis trying to identify the
>     > relevant configuration elements for IFFT size, but actually, I only
>     > saw one configuration element for the IFFT size.  Um...  I've
>     uploaded
>     > an example configuration file to:
>     > http://www.gregkellum.com/temp/synthesis.xml  Could someone tell me
>     > what the relevant configuration elements are?
>     >
>     > Best,
>     > Greg
>     >
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