<HTML ><HEAD ><TITLE >Hearing Impaired</TITLE ><META NAME="GENERATOR" CONTENT="Modular DocBook HTML Stylesheet Version 1.76b+ "><LINK REL="HOME" TITLE="Linux Accessibility HOWTO" HREF="index.html"><LINK REL="PREVIOUS" TITLE="Visual Impairments" HREF="visual.html"><LINK REL="NEXT" TITLE="Physically Disabled" HREF="physical.html"></HEAD ><BODY CLASS="sect1" BGCOLOR="#FFFFFF" TEXT="#000000" LINK="#0000FF" VLINK="#840084" ALINK="#0000FF" ><DIV CLASS="NAVHEADER" ><TABLE SUMMARY="Header navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TH COLSPAN="3" ALIGN="center" >Linux Accessibility HOWTO</TH ></TR ><TR ><TD WIDTH="10%" ALIGN="left" VALIGN="bottom" ><A HREF="visual.html" ACCESSKEY="P" >Prev</A ></TD ><TD WIDTH="80%" ALIGN="center" VALIGN="bottom" ></TD ><TD WIDTH="10%" ALIGN="right" VALIGN="bottom" ><A HREF="physical.html" ACCESSKEY="N" >Next</A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><DIV CLASS="sect1" ><H1 CLASS="sect1" ><A NAME="hearing">4. Hearing Impaired</H1 ><P >For users who have hearing impairments the audio output must be conveyed visually on the screen. Most desktops provide visual audio alerts and warnings. In console mode the system can also be configured to provide visual bells. There is a "Visual Bells mini-HOWTO" written by Alessandro Rubini that provides the configuration details available at: <A HREF="http://www.ibiblio.org/pub/Linux/docs/HOWTO/mini/" TARGET="_top" >http://www.ibiblio.org/pub/Linux/docs/HOWTO/mini/</A >. </P ><DIV CLASS="sect2" ><H2 CLASS="sect2" ><A NAME="AEN315">4.1. Assistive Technologies for the Hearing Impaired</H2 ><P >The following is a list of assistive technologies for the hearing impaired:</P ><DIV CLASS="sect3" ><H3 CLASS="sect3" ><A NAME="AEN318">4.1.1. Telecommunications Devices for the Deaf (TDD)</H3 ><P >TDD allows for the user you to communicate over the telephone using the computer as a text terminal.</P ><P ></P ><UL ><LI ><P ><STRONG > Zapata </STRONG >is a computer-based, high-density telephony project. The current version is available for download as source code on at: <A HREF="http://www.zapatatelephony.org/project.html" TARGET="_top" >http://www.zapatatelephony.org/project.html</A >. </P ></LI ></UL ></DIV ><DIV CLASS="sect3" ><H3 CLASS="sect3" ><A NAME="AEN326">4.1.2. Closed Captioning</H3 ><P >Closed captioning provides text translation of spoken words to video display. Closed captioning can be used for distance learning, video-teleconferencing, audio from a CD-ROM, and other types of interactive technology.</P ><P ></P ><UL ><LI ><P ><STRONG >Ccdecoder </STRONG >is a closed captioned, extended data services decoder for the bttv and video4linux based tv video cards: <A HREF="http://sourceforge.net/projects/ccdecoder/" TARGET="_top" >http://sourceforge.net/projects/ccdecoder/</A >. </P ></LI ></UL ></DIV ></DIV ></DIV ><DIV CLASS="NAVFOOTER" ><HR ALIGN="LEFT" WIDTH="100%"><TABLE SUMMARY="Footer navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" ><A HREF="visual.html" ACCESSKEY="P" >Prev</A ></TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="index.html" ACCESSKEY="H" >Home</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" ><A HREF="physical.html" ACCESSKEY="N" >Next</A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" >Visual Impairments</TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" > </TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" >Physically Disabled</TD ></TR ></TABLE ></DIV ></BODY ></HTML >