search

densilcabrera / psysound3

Automatically exported from code.google.com/p/psysound3
16 stars 11 forks source link

Problem with Terhardt's Pitch analyzer #13

Open philippaichinger opened 9 years ago

philippaichinger commented 9 years ago

Dear Psysound3 team!

Thank you so much for doing Psysound!

I have tested Terhardt's Pitch analyzer with a signal that is supposed to contain two pitches, but only one appears in the spectral pitch pattern and none appears in the virtual pitch pattern, while the multiplicity never exceeds 1.

I tried to track down where this result comes from and ended up in file ptp2svp.m. Here ptp.count is set to 0 in line 53. The next time it can be changed is in line 57, where ptp=compfreqlimit(ptp); is called. That function imitiately starts with if (ptp.count > 0), and so no statements can actually be executed. As a result, only one frequency is transformed to become a spectral pitch in function spp=createspp(spp,ptp,SPMAX), even if there have been more peaks found in the spectrum.

Do I oversee something, or did some unintended thing happen here?

Thanks,

Philipp Aichinger, PhD Medical University of Vienna Department of Otorhinolaryngology Division of Phoniatrics-Logopedics AUSTRIA

SiaBani commented 2 years ago

Hi, I have same problem. What was the solution?