APTct

APTct compares phonetic transcriptions using International Phonetic Alphabet (IPA) symbols to provide quantitative, phonologically informed alignment and scoring for linguistic and clinical research.

Key Features:

• IPA and extIPA symbol support: Accepts the full range of International Phonetic Alphabet (IPA) symbols and most extIPA symbols as input for comparison.
• Modified edit distance algorithm: Uses a modified edit distance algorithm to compute quantitative distances between transcriptions.
• Phonological alignment: Applies phonological alignment principles to inform the alignment step prior to comparison.
• Alignment and scoring visualizations: Produces visual representations of optimal alignments and the scoring operations performed by the algorithm.
• Validation against expert scoring: Has been tested for agreement with expert hand scoring, with minor discrepancies attributed primarily to input errors.

Scientific Applications:

• Clinical linguistics: Facilitates analysis of speech disorders by enabling quantitative comparison between patient transcriptions and expected pronunciations.
• Phonetic research: Enables detailed analysis of phonetic variation across languages and dialects using IPA/extIPA transcriptions.
• Educational assessment: Supports evaluation and comparison of student transcriptions in phonetics training and assessment contexts.

Methodology:

APTct applies a modified edit distance algorithm informed by phonological alignment principles to align and compare IPA and extIPA transcriptions and generates visualizations of optimal alignments and scoring operations; validity was assessed by comparison to expert hand scoring.