Stan Soo

(Italian translation attached; je ne connais encore le français assez bien pour être capable de traducer ces choses.)

After I read the attached paper (see Section 2.2, 3.2, and 4.2-4.3), I've developed an interest in DFW (dynamic frequency warping) and LPC (linear predictive coding). Seeing as I cannot use Mark Cartwright's LPC toolkit since I'm running the 64-bit version of Max, 

where should I start looking for information on how to implement some linear prediction and dynamic frequency warping?

 (Most LPC tutorials online use functions built into Matlab or Gnu Octave. I have Octave, but not Matlab, and I can't find anything that lets you call Octave functions from Max. And then I really can't find anything on DFW, including the paper by someone called "Pfitzinger" that everyone keeps citing.)

(Files attached below. / I file si trovano al di sotto del P.S..)

P.S.: Here is some background on my project, if you are interested: I am studying DSP and my current dream in life is to develop a program that morphs realistically between two speech signals. I've come up with a representation for the oral space and articulatory parameters that should allow for relatively inexpensive calculation of the proper formant contour (given that since formants do not move in parallel from vowel to vowel, one cannot simply transition straight from Vowel A to Vowel B if they are not adjacent vowels).

I originally planned to use the cepstral method to separate the filter from the source, so that I could modify the spectral envelope of the filter before reconvolving it with the source. However, I've recently realized that I would need to emerge back into the time domain to find the formant peaks, and then return to the frequency domain to multiply the two signals together. Keeping everything in sync and keeping things efficient would be difficult with so many Fourier transforms going on, I'm assuming. 

Evaluation of interpolation strategies for the morphing of musical sound objects.pdf

domanda_dfw--forum_cycling74.txt

(Italian translation attached; je ne connais encore le français assez bien pour être capable de traducer ces choses.)

Hello, 
    After I read the attached paper (see Section 2.2, 3.2, and 4.2-4.3), I've developed an interest in DFW (dynamic frequency warping) and LPC (linear predictive coding). Seeing as I cannot use Mark Cartwright's LPC toolkit since I'm running the 64-bit version of Max, where should I start looking for information on how to implement some linear prediction and dynamic frequency warping? (Most LPC tutorials online use functions built into Matlab or Gnu Octave. I have Octave, but not Matlab, and I can't find anything that lets you call Octave functions from Max. And then I really can't find anything on DFW, including the paper by someone called "Pfitzinger" that everyone keeps citing.)

Thanks,
Karissa

(Files attached below. / I file si trovano al di sotto del P.S..)

P.S.: Here is some background on my project, if you are interested:  I am studying DSP and my current dream in life is to develop a program that morphs realistically between two speech signals. I've come up with a representation for the oral space and articulatory parameters that should allow for relatively inexpensive calculation of the proper formant contour (given that since formants do not move in parallel from vowel to vowel, one cannot simply transition straight from Vowel A to Vowel B if they are not adjacent vowels).
    I originally planned to use the cepstral method to separate the filter from the source, so that I could modify the spectral envelope of the filter before reconvolving it with the source. However, I've recently realized that I would need to emerge back into the time domain to find the formant peaks, and then return to the frequency domain to multiply the two signals together. Keeping everything in sync and keeping things efficient would be difficult with so many Fourier transforms going on, I'm assuming.  


(Italian translation attached; je ne connais encore le français assez bien pour être capable de traducer ces choses.)

Hello, 
    After I r

LPC + dynamic frequency warping (EN, con traduzione in italiano)