* Speech-Language Pathology and Audiology Graduate Program - University of São Paulo , Bauru, SP , Brazil.
Int J Audiol. 2015 Jun;54(6):417-23. doi: 10.3109/14992027.2014.998784. Epub 2015 Jan 30.
To compare some perceptual and acoustic characteristics of the voices of children who use the advanced combination encoder (ACE) or fine structure processing (FSP) speech coding strategies, and to investigate whether these characteristics differ from children with normal hearing.
Acoustic analysis of the sustained vowel /a/ was performed using the multi-dimensional voice program (MDVP). Analyses of sequential and spontaneous speech were performed using the real time pitch. Perceptual analyses of these samples were performed using visual-analogic scales of pre-selected parameters.
Seventy-six children from three years to five years and 11 months of age participated. Twenty-eight were users of ACE, 23 were users of FSP, and 25 were children with normal hearing.
Although both groups with CI presented with some deviated vocal features, the users of ACE presented with voice quality more like children with normal hearing than the users of FSP.
Sound processing of ACE appeared to provide better conditions for auditory monitoring of the voice, and consequently, for better control of the voice production. However, these findings need to be further investigated due to the lack of comparative studies published to understand exactly which attributes of sound processing are responsible for differences in performance.
比较使用高级组合编码器（ACE）或精细结构处理（FSP）语音编码策略的儿童的一些感知和声学特征，并研究这些特征是否与正常听力儿童不同。
使用多维语音程序（MDVP）对持续元音/a/进行声学分析。使用实时音高对连贯和自发语音进行分析。使用预选参数的视觉模拟量表对这些样本进行感知分析。
共有 76 名年龄在 3 岁至 5 岁 11 个月的儿童参与了这项研究。其中 28 名是 ACE 用户，23 名是 FSP 用户，25 名是正常听力儿童。
尽管两组 CI 患者都存在一些声音特征偏离，但 ACE 用户的声音质量比 FSP 用户更接近正常听力儿童。
ACE 的声音处理似乎为听觉监测声音提供了更好的条件，从而更好地控制了声音的产生。然而，由于缺乏发表的比较研究来确切了解声音处理的哪些属性负责性能差异，因此需要进一步研究这些发现。
