pilotAnalysis2.m:

1. Added a new input argument option "noFilter", by which the user can
choose to listen to the original sound, instead of the Wiener-filtered
signals.

2. Cleaned up the part of the code related to calc_half (cases in which
speech offset don't have to be determiend because the speech is
unfinished).

3. Offset won't have to be manually labeled in cases where the speech is
unfinished.