Subjective BC OE. According to Fig. 1.1, the subjective BC corresponds to the paths A1 and A2 (A2a then A2b). In Fig. 1.9 seven subjective BC OEs from the literature are presented and our subjective VABC OE is also represented as it will be represented on all the following graphs for reference. Three (one from Xxxxxxxxx et al. (2007) and two from Xxxxxxxx and Xxxxxxxxx (2007)) of the seven presented measurements cover the whole frequency range from 125 to 8000 Hz, they have been chosen because they correspond to insertion depths (18 mm, 15 mm and 7 mm) close to the one in this study (13 mm) and, for these three measurements, the objective BC OE has also been quantified in the same conditions (and will be presented in the next section). The other four measurements cover a more limited frequency (125 to 2000 Hz), but they have been chosen because they are four measurements from the same author (Xxxxxx and Xxxxxxx, 1983) that cover a wide range of insertion depth (indicated in terms of occluded ear canal volumes of respectively 0.2, 0.5, 0.6, and 0.8 cm3).
