Announcing 'Stammering Research' - Stammering Research - UCL
Announcing 'Stammering Research' - Stammering Research - UCL
Announcing 'Stammering Research' - Stammering Research - UCL
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<strong>Stammering</strong> <strong>Research</strong>. Vol. 1.<br />
RESEARCH DATA, SOFTWARE AND ANALYSIS SECTION<br />
Trial software for frequency shifted and delayed auditory feedback<br />
Serge Joukov,<br />
Artefact, LLC<br />
http://www.artefactsoft.com<br />
Abstract. The purpose of this article is to indicate how access can be obtained, through <strong>Stammering</strong> <strong>Research</strong>, to<br />
software which allows speakers to try out the effects of delayed auditory feedback and frequency shifted feedback for a<br />
free trial period. Keyword: http://www.artefactsoft.com<br />
1. DAF/FAF Assistant Documentation<br />
The fluency-enhancing effects of delayed auditory feedback (DAF) and frequency shifted (or<br />
altered) feedback (FAF) have been reviewed recently by Howell (2004). Howell, Davis, Bartrip and<br />
Wormald (2004) have also described and provided demonstrations of the fluency enhancing effects of<br />
FAF. These articles may have prompted readers of <strong>Stammering</strong> <strong>Research</strong> (particularly those who<br />
stutter) to try out the effect of FAF and DAF for themselves. In this article, software that produces<br />
these effects is described that is available for a free trial period of 7-10 days. The software runs on a PC<br />
(there is a pocket version that is also described below).<br />
The DAF/FAF Assistant application requires a Windows compatible computer. The application<br />
supports Windows 95 (R), Windows 98 (R), Windows ME (R), Windows 2000 (R), and Windows XP<br />
(R). The application will not run on Windows NT (R).<br />
The application requires Microsoft DirectX software component to be installed on your computer.<br />
Most likely the DirectX is already installed on your computer and you do not have to install it<br />
separately. (See installation section below how to check if the DirectX is installed.)<br />
The application requires a sound card that supports full-duplex mode under DirectX. Most of the<br />
modern sound cards do support this mode. If your sound card does not support full-duplex mode under<br />
DirectX you can either obtain updated drivers from the sound card manufacturer or consider upgrading<br />
your sound card.<br />
The application requires headphones and a microphone. It is recommended to use a headset that<br />
combines stereo or mono headphones and a microphone. The headset with stereo headphones provides<br />
better DAF and FAF effects but they are bulky and it is difficult to use them when you are talking on<br />
the phone. The headset with mono headphones is better to use with the phone and it usually provides<br />
sufficient DAF/FAF effect to enhance fluency. These headsets are readily available in any computer<br />
store (e.g. RadioShack, Best Buy, etc.). See example below:<br />
Installation<br />
There are several steps that have to be performed to install the DAF/FAF Assistant software<br />
application. Download the setup.exe file from the ArtefactSoft web site using the following link to<br />
download the program: http://www.artefactsoft.com/downloads/daf/1_1/setup.exe. Copy the file to any<br />
temporary directory on your computer.<br />
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