[CLAM] Fundamental frequency estimation

[Pau Arumi]

>>>>>
"Yan Zhou" <yz114 at york.ac.uk> wrote:
> I met a problem while using SMSTools to do the pitchshift transformation. I loaded a 500Hz sinewave (about 1 second time) and set breakpoint to see the fundamental frequency it detects at each frame. The result is 498.204Hz,499.185Hz,499.644Hz,2976.26Hz,2991.05Hz,2991.91Hz....I've tried other sinewaves with different frequencies, and the same thing happened.It seems that it can only detect the first three frame's fundamental correctly, but then goes on weried. While I was using vocal sound instead of sinewave, it works fine. Could anyone tell me why it happens. Thanks!
<<<<<


Hi Yan,

I'm afraid that the pich detection we use in SMSTools is not very flexible. 
Since the sinusoidals tracks detected in a vocal sound and a in a sweep sound are of very different nature, you need to adjust the configuration parameters. 
The best if that you have a look into an example config file.

In this url I've placed a sweep sound file (500Hz-10000Hz), the configuration file sweepConfig.xml (note that you'll have to change the path to the sound files), and a snapshot of the analysis in the SMSTools application:

http://mtg66.upf.es/sweep-analysis/


Pau