Sounds are often categorized in two ways: perceptually and/or acoustically. The phoneme /r/, one of the most persistent speech sound errors, is acoustically defined by an extremely low third formant (F3). The purpose of this study was to gather acoustical information about typical and remediated productions of /r/. Although in theory, these two may sound perceptually accurate, an undetected, underlying acoustical difference may be present between typically produced and remediated /r/ productions. Understanding acoustical markers of /r/ can not only add to our understanding of this phoneme but assist speech therapists utilizing visual biofeedback to identify acceptable acoustic targets for clients to match. This study compared the height of F3 in typical and remediated productions of vocalic /r/ in hopes of identifying the presence or absence of covert contrasts imperceptible to human ears. This study analyzes the /r/ productions of two size-matched female participants, one with typical /r/ productions and the other with perceptually accurate remediated /r/ productions after receiving eight months of electropalatography (EPG) treatment. Each child completed two randomized probes which contained a total of 60 vocalic /r/ targets. Formant height was measured using Praat, an acoustic analysis software program. Preliminary results indicated that there were slight differences in the height of F3 in remediated /r/ productions versus typical productions. These results suggest that there was a covert, acoustically measurable difference between the remediated and typical productions of /r/, although both were perceptually accurate.