| There are two main types of Speech Devices | | | | the device outside or in a noisy room is almost |
| available for the stuttering person to use in their | | | | impossible because of the constant background |
| treatment. | | | | noise coming through to the earpiece the person |
| One is the DAF speech device and the other is | | | | is wearing. |
| the DMAF speech device. | | | | Taking all this into consideration, the Stutter |
| These two Speech Devices are very different in | | | | Device that uses DAF technology is only a |
| their technology that is built into each one. | | | | Temporary Fix to the persons stuttering problem. |
| The treatment for stuttering is very specific | | | | The second speech device, DMAF, which stands |
| when it involves Speech Therapy Devices. | | | | for Digital Mixed Auditory Feedback, uses 'Vocal |
| The speech therapist who adapts their stuttering | | | | Tone' as the main technology used. This also can |
| treatment with Language Devices, will find these | | | | be purchased and taken home for self therapy. |
| two types, DAF and DMAF, of speech output | | | | 'Vocal Tone', which is produced by the opening |
| devices the most frequently recommended. | | | | and closing of the speakers 'Vocal Folds' (vocal |
| The two technologies used in these two are very | | | | cords) is detected as a Buzzing sound, which we |
| different and the differences are as follows: | | | | all have inside our bodies when we talk. |
| First, The DAF device which stands for Delayed | | | | This Buzzing sound is actually detected by a |
| Auditory Feedback, is the Most Well Known | | | | sensor within the device and then mixed with the |
| Device for the treatment of stuttering. This | | | | persons 'Real Time Voice'. This sound is then |
| device can be purchased and taken home with | | | | transferred to the earpiece the person is wearing. |
| the Stutterer to use with day by day speaking | | | | This process is called DMAF. The person hears the |
| situations. | | | | actual Buzzing sound of the 'Vocal Folds' paralleled |
| The DAF device allows the stutterer to hear his | | | | with each word that is spoken. |
| or her own voice with a time delay, like an echo. | | | | This effect reduces 'Vocal Fold' muscle tension |
| The DAF device tricks the brain into thinking that | | | | and improves the coordination of the persons |
| the stutterer is talking in unison with another | | | | speech muscles. This in turn automatically "gets |
| person. It has been known that when sing or | | | | back" the normal muscles functions of fluency, |
| talking in unison with another person the stutterer | | | | while it helps replace bad stuttering habits with |
| tends not to stutter. This is called the 'Choral | | | | good, relaxed, fluent speech. |
| Effect'. | | | | There has not been any long term studies on the |
| There are two major problems with this device | | | | DMAF speech therapy device that uses Vocal |
| that has come to light. | | | | Tone as its main technology. The use that has |
| First, It has been found that the brain can not be | | | | been noticed so far with the DMAF vocal tone |
| tricked to long, so the effect, (Choral Effect), | | | | device has been very positive. With more |
| wears off with time. | | | | stutterers being introduced to this device, |
| Second, The DAF device has a problem with | | | | hopefully it will prove to be the device needed for |
| background noise to the earpiece. The person is | | | | a lasting, positive, Self Treatment for the |
| only able to use the device in a quite setting. Using | | | | stuttering person. |