<HTML dir=ltr><HEAD>
<STYLE>
v\:* {behavior:url (#default#vml);}
</STYLE>
<STYLE>v\:* {
BEHAVIOR: url (#default#vml)
}
</STYLE>
</HEAD>
<BODY style="BACKGROUND-POSITION: left top; FONT-SIZE: 12pt; MARGIN: 0px 10px 10px; COLOR: #00005b; BACKGROUND-REPEAT: repeat; FONT-FAMILY: Arial" text=#00005b bgColor=#eff3f7 background=cid:43CB837D-A7A8-493E-8B7E-5457B4675C97 scroll=yes SIGCOLOR="0">
<DIV id=idOWAReplyText90523 dir=ltr>
<DIV dir=ltr><FONT face=Arial color=#000000 size=2></FONT> </DIV>
<DIV dir=ltr><FONT face=Arial color=#000000 size=2>Hello Kiran,</FONT></DIV>
<DIV dir=ltr><FONT color=#000000 size=2></FONT> </DIV>
<DIV dir=ltr><FONT color=#000000 size=2>Thanks for your message. It is fairly easy to integrate Asterisk with Sphinx, the only trouble is that you need to have an Acoustic Model (AM) for 8KHz, which are not (yet) readily available.</FONT></DIV>
<DIV dir=ltr><FONT color=#000000 size=2></FONT> </DIV>
<DIV dir=ltr><FONT color=#000000 size=2>There is a Language Model (LM) and AM included with Sphinx, but it is designed for a sampling rate of 16KHz and therefore does not work with Asterisk. Even if you use sophisticated upsampling techniques (sinc interpolation - sox) to create 16KHz for use with Sphinx, the recognition rate is absolutely dismal. Sphinx does a fine job on native 16KHz samples, just not samples created by upsampling.</FONT></DIV>
<DIV dir=ltr><FONT color=#000000 size=2></FONT> </DIV>
<DIV dir=ltr><FONT color=#000000 size=2>CMU does have an 8KHz LM and AM available which they created for their Communicator project (phone based airplane reservation system), but the AM is for Sphinx2, which has considerably poorer recognition speed and accuracy compared to Sphinx3 or Sphinx4. I haven't had a chance to try and convert the AM to Sphinx3, but I believe it can be done. </FONT></DIV>
<DIV dir=ltr><FONT color=#000000 size=2></FONT> </DIV>
<DIV dir=ltr><FONT color=#000000 size=2>If you want to spend the next 6 months developing and training a LM and AM for Sphinx for 8KHz, many many people will be very happy :)</FONT></DIV>
<DIV dir=ltr><FONT color=#000000 size=2></FONT> </DIV>
<DIV dir=ltr><FONT color=#000000 size=2>Regards,</FONT></DIV>
<DIV dir=ltr><FONT color=#000000 size=2><BR>Stephan.</FONT></DIV></DIV>
<DIV id=idSignature86552>
<DIV><FONT face=Arial color=#000000 size=2>---</FONT></DIV>
<DIV><FONT face=Arial size=2>Stephan A. Edelman, B.Eng.</FONT></DIV>
<DIV><FONT face=Arial size=2>NewAce Corporation</FONT></DIV>
<DIV><FONT face=Arial size=2>Toll Free: 1-877-463-9223 x221</FONT></DIV>
<DIV><FONT face=Arial size=2>Tel: +1 519 336 4837 x221</FONT></DIV>
<DIV><FONT face=Arial size=2>Fax: +1 519 336 4046</FONT></DIV>
<DIV><FONT face=Arial size=2>Pager: +1 519 333 3247</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV></DIV>
<DIV dir=ltr><BR>
<HR tabIndex=-1>
<FONT face=Tahoma size=2><B>From:</B> kiran<BR><B>Sent:</B> Fri 7/21/2006 8:31 AM<BR><B>To:</B> stephan@newace.ca<BR><B>Subject:</B> Sphinx and asterisk<BR></FONT><BR></DIV>
<DIV>
<TABLE id=INCREDIMAINTABLE cellSpacing=0 cellPadding=2 width="100%" border=0>
<TBODY>
<TR>
<TD id=INCREDITEXTREGION style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12pt; PADDING-BOTTOM: 0px; PADDING-TOP: 0px" vAlign=top width="100%">
<DIV>Dear Stephan,</DIV>
<DIV> </DIV>
<DIV>Please let me know if you can help us in integrating sphinx with asterisk</DIV>
<DIV> </DIV>
<DIV>Regards</DIV>
<DIV>Kiran</DIV>
<DIV> </DIV>
<DIV> </DIV></TD></TR>
<TR>
<TD id=INCREDIFOOTER width="100%">
<TABLE cellSpacing=0 cellPadding=0 width="100%">
<TBODY>
<TR>
<TD width="100%"></TD>
<TD id=INCREDISOUND vAlign=bottom align=middle></TD>
<TD id=INCREDIANIM vAlign=bottom align=middle></TD></TR></TBODY></TABLE></TD></TR></TBODY></TABLE></DIV></BODY></HTML>