Effect of single and combined altered auditory feedback on stuttering frequency at two speech rates

MacLeod, Jennifer; Kalinowski, Joseph; Stuart, Andrew; Armson, Joy

doi:10.1016/0021-9924(94)00010-w

Cited by 63 publications

(47 citation statements)

References 17 publications

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“…In our previous studies we have demonstrated that when instructed to speak at a self-imposed 'normal' rate, individuals who stutter generate rates that are comparable to normal conversational speech rates of fluent speakers. [19][20][21][22] Although purely speculative, it may be the case that following prolonged exposure (i.e., in excess of four months) to AAF, stuttering episode duration is reduced which may lead to the perception of more natural sounding speech despite the fact that the total number of dysfluencies remain the same across samples. Stuttering episode duration has been observed to decrease under conditions of DAF and FAF.…”

Section: Discussionmentioning

confidence: 99%

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Investigations of the impact of altered auditory feedback in-the-ear devices on the speech of people who stutter: One-year follow-up

Stuart

Kalinowski

Saltuklaroglu

et al. 2006

Disability and Rehabilitation

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Section: Discussionmentioning

confidence: 99%

“…We continue to offer that not all individuals respond favorably to AAF. Our previous studies 8, [19][20][21][22][25][26][27] and others 24,28,39 have shown varying levels of stuttering reduction under various AAF conditions. Further, in some AAF conditions, spontaneous speech from those who stutter is not judged to be natural.…”

mentioning

confidence: 99%

Investigations of the impact of altered auditory feedback in-the-ear devices on the speech of people who stutter: One-year follow-up

Stuart

Kalinowski

Saltuklaroglu

et al. 2006

Disability and Rehabilitation

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“…AAF is effective during both reading and spontaneous speech tasks, as well as in traditionally difficult situations such as using the telephone and speaking in front of audience (Armson et al, 2006;. Because of the need to control variables, most researchers have investigated the effects of AAF on stuttering while participants read (Armson, Foote, Witt, Kalinowski, & Stuart, 1997;Ham & Steer, 1967;Kalinowski, Stuart, Wamsley, & Rastatter, 1999;MacLeod et al, 1995;Maraist & Hutton, 1957;. Typically the effectiveness of AAF during reading tasks is assessed by measuring percentage of stuttered syllables (%SS) while participants are reading a short passage.…”

Section: Introductionmentioning

confidence: 99%

Effects of altered auditory feedback (AAF) on stuttering frequency during monologue speech production

Antipova

Purdy

Blakeley

et al. 2008

Journal of Fluency Disorders

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The present study investigated the immediate effects of eight altered auditory feedback (AAF) parameters on stuttering frequency during monologue speech production on two occasions. One of the modern commercially available portable anti-stuttering devices, "The Pocket Speech Lab" (Casa Futura Technologies ® ) was used in the study to produce the auditory feedback alterations. Six types of combined delayed auditory feedback (DAF) and frequency shifted auditory feedback (FAF) and two types of DAF alone were tested for eight participants aged 16-55 years, with stuttering severity ranging from mild to severe. The present study found that AAF is an effective means to reduce stuttering frequency during monologue speech production. All eight AAF experimental conditions reduced stuttering frequency, however, there was substantial variability in the stuttering reduction effect across experimental conditions and across participants. There was also instability in stuttering reduction across the two testing sessions. On average, a 75 ms time delay on its own and a combination of the 75 ms time delay and a half octave downward frequency shift were found to be more effective than other combinations of AAF parameters that were investigated.Educational objectives: After reading this paper, the reader should be able to (1) summarize the research investigating the effect of altered auditory feedback on stuttering frequency during monologue speech production; (2) describe the stuttering reduction effect of the eight parameters of AAF tested during monologue speech production; and (3) discuss the possible clinical implications of the use of AAF for stuttering treatment.

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“…16,18 Although Howell et al 16 reported FAF to be more effective than DAF in inhibiting stuttering, others have reported DAF and FAF to be equally effective. 18,25 Traditionally these forms of altered auditory feedback have been generated by electronic signal processing devices, however, passive mechanical devices may produce altered auditory feedback effects as well. 29 The mean in which altered auditory feedback inhibits stuttering remains undetermined.…”

mentioning

confidence: 99%

Self-Contained In-the-Ear Device to Deliver Altered Auditory Feedback: Applications for Stuttering

Stuart

Xia²,

Jiang³

et al. 2003

Annals of Biomedical Engineering

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The design and operating characteristics of the first self-contained in-the-ear device to deliver altered auditory feedback is described for applications with those who stutter. The device incorporates a microdigital signal processor core that reproduces the high fidelity of unaided listening and auditory self-monitoring while at the same time delivering altered auditory feedback. Delayed auditory feedback and frequency-altered feedback signals in combination or isolation can be generated to the user in a cosmetically appealing custom in-the-canal and completely in-the-canal design. Programming of the device is achieved through a personal computer, interface, and fitting software. Researchers and clinicians interested in evaluating persons who stutter outside laboratory settings in a natural environment and persons who stutter looking for an alternative or adjunct to traditional therapy options are ideal candidates for this technology. In both instances an inconspicuous ear level alternative to traditional body worn devices with external microphones and earphones is offered.

show abstract

Effect of single and combined altered auditory feedback on stuttering frequency at two speech rates

Cited by 63 publications

References 17 publications

Investigations of the impact of altered auditory feedback in-the-ear devices on the speech of people who stutter: One-year follow-up

Investigations of the impact of altered auditory feedback in-the-ear devices on the speech of people who stutter: One-year follow-up

Effects of altered auditory feedback (AAF) on stuttering frequency during monologue speech production

Self-Contained In-the-Ear Device to Deliver Altered Auditory Feedback: Applications for Stuttering

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