Delayed auditory feedback
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Delayed auditory feedback (DAF), is a device that contains both a speaker and headphones. The user of the device speaks into the DAF machine and the headphones delay the sound to the listeners ear.
The DAF machine is a proven technique to aid with stuttering. When the DAF delay is short, (25 to 75 milliseconds, or about a twentieth of a second), this immediately reduces stuttering about 70%.[1] The DAF machine is usually impractical for use outside of a clinic because of the size of the machine, the aparati that go along with the machine, and the prohibitive cost of DAF machines. Relatively inexpensive computer programs now exist that simulate the old, large, DAF devices.
The DAF machine has also been claimed to be helpful with cluttering. The DAF machine reduces the rate of a clutterer, and thus reduces the cluttering disfluencies.
Delayed auditory feedback has been proven to induce mental stress.[1]
[edit] References
- ^ a b Anti-Stuttering Devices: Delayed Auditory Feedback. Casa Futura Technologies. Retrieved on March 10, 2007.
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