Hi,
Seems [cos~] only gives expected results between -1024 and 1024.
Above 1024 the frequency halves, halving again at 5120, etc. Below -1024 the frequency doubles, until chaos at -3072.
http://claudiusmaximus.goto10.org/g/tech/cos~-test.pd.png http://claudiusmaximus.goto10.org/g/tech/cos~-test-2.pd.png http://claudiusmaximus.goto10.org/g/tech/cos~-test-3.pd.png
Claude