The present invention includes devices, kits and methods for an automated ball feeding device for a ball throwing machine. In some embodiments, a method of simulating phase noise for an oscillator circuit may include providing an oscillator circuit description. The speech coder further generates multiple constituent components associated with the synthetic excitation signal, wherein one constituent component of the multiple constituent components is based on a shifted version of another constituent component of the multiple constituent components. 2 to 5 parts by weight of an isocyanate compound, with respect to 100 parts by weight of a polymer having a reactive silicon group with a weight average molecular weight of 2000 to 50000 on or near a molecular terminal.