Arcuri Cláudia Fassin, Osborn Ellen, Schiefer Ana Maria, Chiari Brasília Maria
Departamento de Fonoaudiologia, Escola Paulista de Medicina, Universidade Federal de São Paulo.
Pro Fono. 2009 Jan-Mar;21(1):46-50.
Speech duration has been the subject of acoustic studies due to its relationship with rhythm and speech rate. The speech analysis of stutterers has revealed data which often differs from that found in non-stutterers. These differences most likely stem from timing disturbances related to speech motor control.
To compare the speech rates of individuals presenting different stuttering severity levels.
Participants were 6 adult stutterers with the following severity levels: 2 with mild stuttering; 2 with moderate stuttering and 2 with severe stuttering. The words 'cavalo' (horse), 'pipoca' (popcorn) and 'tapete' (carpet) were introduced in a carrier phrase, 'Digo......baixinho' (Say ......in a low voice). Each phrase was uttered by the researcher and then repeated aloud 3 times by the participants while being recorded in a computer. Utterances containing speech disruptions were discarded. Subsequently, timing measurements were made, using the Praat 4.2 software. Utterances were divided into segments delimited by two consecutive voice onsets, and speech rate was then calculated (number of vowel-vowel segments divided by the total sum of duration of the segments). The data were analyzed statistically using ANOVA.
The group with mild/moderate stuttering presented higher and similar speech rates, differing statistically from the group with severe stuttering, therefore indicating that the higher the severity of stuttering, the lower the speech rate. This difference seems to be related to difficulties in motor programming, affecting mainly the rhythm and the timing of discourse.
The rate of fluent speech during a repetition task differentiated the studied individuals according to the severity of stuttering.
由于言语时长与节奏和语速相关，因此一直是声学研究的主题。对口吃者的言语分析揭示的数据往往与非口吃者不同。这些差异很可能源于与言语运动控制相关的时间紊乱。
比较不同口吃严重程度个体的语速。
参与者为6名成年口吃者，其严重程度如下：2名轻度口吃者；2名中度口吃者和2名重度口吃者。在载体短语“Digo......baixinho”（低声说......）中引入单词“cavalo”（马）、“pipoca”（爆米花）和“tapete”（地毯）。每个短语由研究人员说出，然后参与者大声重复3次，同时在计算机上进行录制。舍弃包含言语中断的话语。随后，使用Praat 4.2软件进行时间测量。将话语分为由两个连续语音起始点界定的片段，然后计算语速（元音-元音片段的数量除以片段总时长）。使用方差分析对数据进行统计分析。
轻度/中度口吃组的语速较高且相似，与重度口吃组在统计学上存在差异，因此表明口吃严重程度越高，语速越低。这种差异似乎与运动编程困难有关，主要影响话语的节奏和时间。
在重复任务中流利言语的速度根据口吃严重程度区分了所研究的个体。
