bend [-f frame-rate(25)] [-o over-sample(16)] { start-position(+),cents,end-position(+) }
start-position, cents, end-position specifies one
bend. cents is the number of cents (100 cents = 1 semitone) by
which to bend the pitch. The other values specify the points in
time at which to start and end bending the pitch, respectively.
The pitch-bending algorithm utilises the Discrete Fourier Transform
DFT) at a particular frame rate and over-sampling rate. The -f
and -o parameters may be used to adjust these parameters
and thus control the smoothness of the changes in pitch.
See also pitch.