AI 음성인식 모듈을 통한 말운동 능력 측정 프로그램의 유용성: 예비연구
Utility of a digital motor speech measurement program using an AI speech recognition module: A pilot study
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본 연구는 AI 음성인식 모듈을 적용한 앱과 음향 분석 소프트웨어 Praat 간의 측정 결과 일치도를 평가하고, 두 측정 방법의 신뢰성과 상호 대체 가능성을 검토하는 데 목적이 있다. 이를 위해 최대발성시간(MPT) 및 조음교대운동(DDK) 과제를 활용하여 두 측정 결과 간의 평균 차이와 일치 한계를 분석하였다. MPT 측정 결과, 상위 일치 한계는 0.72, 하위 일치 한계는 –0.81로 나타났으며, 93%의 결과가 일치 한계 내에 분포하였고, 측정 평균 차이는 –0.04로 두 측정 방법 간 높은 일치도가 확인되었다. DDK 과제에서는 /퍼/와 /터/에서 각각 91%의 결과가 일치 한계 내에 분포하였고, 측정 평균 차이는 각각 0.23과 0.17로 나타나, 임상적으로 두 측정 결과 간 유의미한 차이가 없었다. /커/ 과제의 경우에도 상위 일치 한계는 0.23, 하위 일치 한계는 –0.75로 나타났으며, 91%의 결과가 일치 한계 내에 분포하였다. /퍼터커/ 과제는 상위 일치 한계가 0.38, 하위 일치 한계가 –0.32로 나타났으며, 93%의 결과가 일치 한계 내에 분포하였고, 평균 차이는 0.03으로 두 측정 방법 간 매우 높은 일치율을 보였다. 이러한 결과는 AI 음성인식 기술이 음성 분석 도구로서 임상적 활용 가능성이 높음을 시사한다. 특히, 본 연구는 AI 기반 음성 평가가 기존 음성 분석 도구를 보완하거나 대체할 수 있는 신뢰성을 확인하였으며, 향후 정상 아동 및 말소리 장애 아동을 위한 음성 인식 기반 학습 및 치료 도구 개발의 기초 자료로 활용될 수 있을 것으로 기대된다.
Abstract
This study evaluated the agreement between an AI-based speech recognition module and the acoustic analysis software Praat, focusing on the reliability and interchangeability of the two methods. Maximum phonation time (MPT) and diadochokinetic (DDK) tasks were used to analyze mean differences and limits of agreement. For MPT, the limits of agreement were 0.72 and –0.81, with 93% of the results falling within these limits and a mean difference of –0.04, indicating strong agreement and high accuracy. For the DDK tasks, 91% of the /pʌ/, /tʌ/, and /kʌ/ results fell within the limits, with mean differences of 0.23, 0.17, and 0.23, respectively, demonstrating reliable accuracy. The /pʌtʌkʌ/ task showed 93% of results within the limits, with a mean difference of 0.03, confirming very high agreement and accuracy. These findings suggest that AI-based automatic speech recognition technology has strong potential for clinical acoustic analysis, offfering reliability and possibility of complementing or replacing traditional tools. This study also provides a foundation for developing speech recognition-based learning and therapeutic tools for children with and without speech sound disorders.
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