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Baseline System

Figure 1 shows a simplified schematic of the baseline system. For simplicity, not all signal paths are shown. A scene generator (blue box) creates the speech in noise (SPIN) that the hearing aid model then enhances (yellow box). This enhancement is individualised for each listener, hence there is also a system to select a random listener (white ellipse) with a particular set of pure tone air-conduction thresholds or audiograms.