TOPIC: Looped sample tuning bug

You are right, but if we have a sample with a short loop, the soundfont player will still duplicate this loop as many times as needed to make the sound. Hearable frequency will be very dependent on the number of points in the loop, so the correlation measurements will be perfectly valid. Also, knowing the frequency of the looped sample will make it easier to adjust the loop length.

You are right too! We may define better what would be the purpose of the root key computation.

My opinion is that tuning a sample must be independent from the loop, the later being used in the process just to give a hint to know approximately where the pitch computation must be done, a hint to locate a stable area. To me, finding a very short loop that wouldn't have the same pitch than the whole sample would be an error.