Newsgroups: comp.speech
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From: ctimmons@asic.sc.ti.com (Clay Timmons)
Subject: Re: Speech Recognition chip 
Message-ID: <m0YSl4.mXO@asic.sc.ti.com>
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Reply-To: ctimmons@asic.sc.ti.com
Organization: Texas Instruments ASIC group, Dallas TX, USA
References: <GALETL.1.000B80DD@caedm.et.byu.edu>
Date: Tue, 31 May 1994 18:07:06 GMT
Lines: 82

In article 000B80DD@caedm.et.byu.edu, GALETL@caedm.et.byu.edu (Terri L. Gale) writes:
>I am currently working on a senior project.  We are attempting to build a 
>device that will be used to dial a telephone.  It will be required to 
>recognize all 10 digits (0-9) and a few other key words.  We are looking for a 
>speech recognition chip that we can program to recognize these words.  The 
>chip will be run from a microcontroller.
>
>Also, another option is to use a DSP.  Does anyone know of any programming 
>algorithms used for speech recognition with the TI 320 series of DSP chips.
>
>Any help would be much appreciated.
>
>Please email me galetl@caedm.byu.edu.
>
>Thanks - - Terri Gale

Terri, here is a copy of a post about a chip that might suit your needs.
I have not used the chip myself but I plan to tinker with one in the
next month or so. 

Good Luck,

Clay Timmons  ctimmons@asic.sc.ti.com


-----------------from an earlier post to comp.robotics -----------


Voice Recognition:
 
Recently I found a voice recognition product that is perfect for 
robotic application.  The HM2007 is a 48 pin IC that, along with a 
SRAM chip, allows up to 40 word speech recognition. The HM2007 provides 
the front end voice recognition processing, and can operate in one of two 
modes.  The stand alone mode uses just a simple keyboard and display, or 
or the CPU mode were the chip is connected to a host CPU.
 
General Description:
 
HM2007 is a single chip CMOS voice recognition LSI circuit with on-chip 
analog front end, voice analysis, recognition process and system control 
functions.  A 40 word isolated-word voice recognition system can be 
composed of an external microphone, keyboard, SRAM and a few other 
components.  When combined with a microprocessor, an intelligent 
recognition system can be built.
 
The demo board for this chip is being distributed by THE SUMMA GROUP
for $100.  The demo board comes complete with a keyboard and display, 
SRAM, microphone and documentation for the HM2007.  The demo board can be 
switched to CPU mode and it provides a CPU i/o port. *I understand the 
HM2007 should be available as a single chip for less than $30. ( *call )
 
The board works reasonably well with the microphone a few inches from 
your mouth, and an op-amp can be added to increase that distance.  Also 
the board works best with a small vocabulary set.  The larger the 
search vocabulary the more trouble is has distinguishing between words. 
( Words such as THREE and GREEN ).  This is no problem in CPU mode 
because you can upload and download word templates in logical groups.  
Choose your vocabulary carefully.
 
I have found the demo board allot of fun to play with, and it will make a 
powerful, and cheap, addition to my next robot project.  Anyway why ramble 
on?  Contact THE SUMMA GROUP and have them send you documentation on the 
HM2007, or order the demo board.
 
CONTACT:     THE SUMMA GROUP LIMITED
             One California Street.
             Suite #1940
             San Francisco, CA  94111
             (415) 288-0390
 
PS  If you try the HM2007, let me know what you think.
 
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