�
i often ask the same question and had thought at one time i knew the answer.� 
and then another paper comes out and muddies the water.
i have most often thought that PSOLA means what i like to call "Lent's 
Algorithm" (that can also be credited to Hamon).�
it's a pitch shifter that does not shift the formants or resonances of a vocal 
tone.
and i thought that WSOLA is for time-scaling (so neither pitch nor formants are 
shifted), but when combined with resampling shifts pitch and formants together.
so one paper that might help (or confuse)
is�https://arxiv.org/pdf/1801.06492.pdf�
and here is 
another�https://www.researchgate.net/publication/3567696_An_Overlap-Add_Technique_Based_on_Waveform_Similarity_WSOLA_for_High_Quality_Time-Scale_Modification_of_Speech
 .
�
i dunno how SOLA differs from
PSOLA.� "Synchronous" to what?
�
and i can be totally wrong and am happy to be corrected.
�
r b-j



---------------------------- Original Message ----------------------------

Subject: [music-dsp] SOLA, PSOLA and WSOLA.

From: "Alex Dashevski" <alexd...@gmail.com>

Date: Tue, February 26, 2019 2:09 am

To: music-dsp@music.columbia.edu

--------------------------------------------------------------------------



> I can't understand the difference between SOLA, PSOLA and WSOLA.

> I have already understood how OLA works.

> What is difference between PSOLA and Re-sampling with (SOLA or WSOLA) ?

> What is difference between SOLA and WSOLA ?

> I tried to search in google but I did not find any understandable

> information

>

> Thanks,

> Alex

> _______________________________________________

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> music-dsp@music.columbia.edu

> https://lists.columbia.edu/mailman/listinfo/music-dsp
�
�
�


--



r b-j� � � � � � � � � � � � �r...@audioimagination.com



"Imagination is more important than knowledge."

�
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