corkscrew and speed of sound.

[solid]

A year passed away and new Fête de la Science approaches. For this occasion here is a new version of the program. In addition to the resonance frequency determination from the Fourier transformation I tried the alternative technique using the autocorrelation function.  Two results are similar but a systematic underestimation of the resonance frequency and the corresponding sound speed is observed. Maybe it happens due to the presence of the cork near to the bottleneck when the sound is emitted (the 1/4 wavelength tube transforms to a Helmholtz resonator).

               

With special greetings to Julien.
Yours Mikhail (solid).