Apeksha Kumari, Hanasoge Sowmya, Jain Pratham, Babu Saraswathi Surendra
JSS Institute of Speech and Hearing, MG Road, Mysuru, Karnataka India.
Indian J Otolaryngol Head Neck Surg. 2023 Sep;75(3):1707-1711. doi: 10.1007/s12070-023-03721-5. Epub 2023 Mar 28.
Signal-to-noise ratio (SNR) is one of the important parameters to be considered for the effective perception of speech. Many researchers indicate that children with autism spectrum disorder (ASD) have reduced capacity to integrate sensory information across different modalities and show speech understanding difficulty in the presence of background speech or noise. So, this present study was undertaken with the aimed to evaluate and compare the speech perception ability in quiet and in the presence of noise for children with and without ASD and also to compare across different noise conditions. Speech perception in noise was measured for 15 children with ASD and 15 age-matched children without ASD in the age range of 8 to 12 years. The stimulus includes standardized bisyllabic and trisyllabic Kannada words in quiet and at different SNR conditions. The result showed that children with ASD had poor performance in all the listening conditions (quiet, speech babble, and speech noise) and the syllable conditions (bisyllables and trisyllables) compared to children without ASD. When compared across quiet and different SNR conditions for individuals with ASD, the result showed the best performance in quiet conditions followed by different SNR conditions. The performance deteriorated with a decrease in SNR for both groups. Children with ASD showed poor performance in quiet and in the presence of noise compared to children without ASD. Speech perception evaluation in the presence of noise provides a more reliable predictor of the communication difficulty faced by children with ASD than evaluating only in quiet conditions.
信噪比（SNR）是有效感知语音时需要考虑的重要参数之一。许多研究人员指出，自闭症谱系障碍（ASD）儿童整合不同模态感官信息的能力下降，并且在存在背景语音或噪音的情况下表现出言语理解困难。因此，本研究旨在评估和比较患有和未患有ASD的儿童在安静环境和有噪音环境下的言语感知能力，并比较不同噪音条件下的情况。对15名年龄在8至12岁的ASD儿童和15名年龄匹配的非ASD儿童进行了噪音环境下的言语感知测试。刺激材料包括安静环境下以及不同信噪比条件下的标准化双音节和三音节卡纳达语单词。结果表明，与非ASD儿童相比，ASD儿童在所有听力条件（安静、言语嘈杂、言语噪音）和音节条件（双音节和三音节）下的表现都较差。当比较ASD个体在安静环境和不同信噪比条件下的情况时，结果显示在安静条件下表现最佳，其次是不同信噪比条件。两组的表现都随着信噪比的降低而变差。与非ASD儿童相比，ASD儿童在安静环境和有噪音环境下的表现都较差。与仅在安静条件下进行评估相比，在有噪音环境下进行言语感知评估能更可靠地预测ASD儿童所面临的沟通困难。
