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Table 1 Comparison of defined disorder levels in the study with SIR criteria

From: Classification of voice disorder in children with cochlear implantation and hearing aid using multiple classifier fusion

SIR score Levels of intelligibility in SIR criteria Levels of voice disorder in the study
1 Connected speech is unintelligible.
Prerecognizable words in spoken language, primary mode of communication may be manual.
Level1
2 Connected speech is unintelligible.
Intelligible speech is developing in single words when context and lip-reading cues are available.
Level2
3 Connected speech is intelligible to a listener who concentrates on lip-reading. Level2
4 Connected speech is intelligible to a listener who has little experience of a deaf person's speech. Level3
5 Connected speech is intelligible to all listeners. Level4