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Whatever happened to the Speech recognition chip?

Flyboybc

Nov 19, 2015
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Nov 19, 2015
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I have been looking for a CMOS LSI speech recognition chip and I have been completely unsuccessful. Something that will communicate i2c or 1 wire or anything serial really. I have seen many datasheet PDF's and even project logs with parts call outs but whenever I Google the LSI chip the PDF or project refers to I am completely unable to find a source for the part. I have tried Mouser, Digikey etc. and even searching "speech recognition" yields only development kits that cost in excess of $150.00

I have seen articles written YEARS ago that refer to $15 40 word speaker dependent OR independent LSI CMOS chips that I can actually plug into a DIP socket. When I finally traced THAT chip to the MFGR their webpage was a big 404

Whut the hey?
 

BobK

Jan 5, 2010
7,682
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Jan 5, 2010
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Did you try Ebay? You can often find discontinued chips there.

Bob
 

Alec_t

Jul 7, 2015
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Makes you wonder how accurate the chips were. The slightest error in recognition could be disastrous in many uses, so perhaps the chips didn't sell well?
 

Flyboybc

Nov 19, 2015
3
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Nov 19, 2015
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I should have mentioned what I have seen.

http://www.imagesco.com/articles/speech/speech-recognition-tutorial01.html

SR-06 is pretty pricey at $137.85 and I am looking for a chip not a module.

http://www.speech.cs.cmu.edu/comp.speech/Section6/Recognition/hm2007.html

When I tracked down the manufacturers website it was 404 and you can not find the HM2007 anywhere.

I also found http://www.mikroe.com/click/speakup/

Also a module rather than a chip. I would love to work with a module if it was affordable but at 39$ how do I develop a consumer product out of that? I need a chip (or module) priced at $15 or less.

https://www.sparkfun.com/products/13316

This final link is a $50 module that I am sure I would love to play with but I develop products for short production runs. I require chips or modules priced like them. I used to build and sell speech recognition modules in 1984 using LSI CMOS chips (don't ask I don't remember) that could do 20 user dependent or 5 user independent phrases. The chips cost me less than $6.00 apiece.

As for fleaBay there are the Chinese LD3320 modules on Ebay as low as $13.42 that do NOT tell you in the listing that they only recognize 2 dialects of CHINESE.

https://www.youtube.com/watch?feature=player_embedded&v=OC9BMt0FEcM

https://www.youtube.com/watch?feature=player_embedded&v=NNPEqIjVPEw

Nowadays embedded controllers are powerful enough to run the same algorithms your PC uses to recognize speech. And controller chips are dirt cheap. I may have to redevelop an old technology myself.
 
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