A model relating discharge rate in single auditory‐nerve fibers to parameters of a two‐tone stimulus is presented. We consider cases where one tone is at fiber characteristic frequenfcy (CF) and the other tone produces two‐tone suppression. The last stage in the model is a saturating nonlinearity. For the CF tone presented alone, the input to this nonlinearity is the CF amplitude; in the two‐tone case, the CF amplitude is attenuated by a factor which depends only on the suppressor‐tone amplitude and frequency. The model serves to relate a number of two‐tone studies. In particular, it predicts our recently reported differences in two‐tone suppression for the cases of suppressor frequencies above and below fiber CF.Subject Classification: [43]65.35, [43]65.42.