Audio synchronization

See my post on comp.dsp (via Google Groups)

Sound #1 is recorded by a small compact camera.

Sound #2 is recorded by a Zoom H4n recorder.

Both sounds are recorded at the same place, almost at the same time.

Spectogram are colored because I'm using sub RGB components to triple the width. (Intended to be displayed on LCD display with RGB order.)

Spectogram A from sound #1

Very noisy recording because of the poor mic quality.

Spectogram B from sound #2

Long vertical lines corresponds to the wind noise recorded by the H4n.

(Obviously, the sound should have not recorded the wind, but that ensure that my attempt is robust, even if such perturbations are present.)

[GOOD] Absolute difference between spectograms A & B by shifting A by 44 pixels to the left

While the wind is still in the resulting spectogram, many features disappeared. That was the goal.

[BAD] Absolute difference between spectograms A & B without shifting