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ART-NAD is proposed, a reference-audio intelligibility metric that replaces the vocal-tract constriction variables of NAD with vocal-tract constriction variables predicted from audio by a speaker-independent acoustic-to-articulatory inversion model trained on the same \texttt{wav2vec2} features.
A new benchmark, PathBench, finally allows for standardized comparison of pathological speech assessment methods, revealing that the proposed Dual-ASR Articulatory Precision (DArtP) metric outperforms existing reference-free approaches.
