Different methods for processing signals to obtain the betatron tune of the transverse motion will be discussed. The present tune meter for the AGS, based on the so-called gated counter method, will be reviewed shortly. Next the different possibilities of measuring the tune with the help of Fast Fourier Transforms (FFT) will be discussed. A final section gives a proposal for systems to be implemented for the AGS as well as the Booster. The AGS Tune Meter The tune meter consists of kicker

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... with associated power supplies for each transverse plane to excite coherent betatron motion and signal processing equipment to measure the frequency of this coherent motion and deduce a number for the betatron tune.