Home Speech recognition for Home Automation
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Posted by Soren on September 9, 2007, 8:13 am
Please log in for more thread options I'm looking at possibilities of constructing a relatively cheap home speech recognition system to turn appliances on and off. As i see it I have several options: - Use a computer: Pros: Good Software is easy to get, Probably the fastest way to get a system. Devices could be run from the serial/ parallel port. Cons: Expensive solution for such a "simple task". Computer must be dedicated and run all the time = high power consumption = expensive. - Build a system from speech recognition IC's or Microcontrollers: Pros: Components are relatively cheap, Low power consumption, Good recognition rate Cons: Components are often SMD's (haven't found any that are not) which means specialized equipment is to be used. Demo/development boards costs too much to justify its use. Maybe long development time. - Buy Specialized solution: Pros: Plug'n'play Cons: Extremely expensive, removes the fun of DIY :) What I really need is a robust recognition system that works with microphones not placed directly in front of the speaker.. like in the corner of the living room. Does anyone here know of such a system, or tried to develop one? It only needs to recognize 5-10 words. It's really a "toy" project. Thanks, Soren | |||||||||||||||||||
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Posted by Jan Panteltje on September 9, 2007, 8:58 am
Please log in for more thread options If you wait until end of month Asus will come out with a Linux based 198$ laptop, the Eee PC, run perlbox voice on it. Perlbox-voice is user independent, needs no training, and that PC platform cannot be beaten for cost. As to far away mikes, it may or may not work depending on environment noise. Beware of false triggers too. | |||||||||||||||||||
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Posted by Soren on September 9, 2007, 9:15 am
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> If you wait until end of month Asus will come out with a Linux based
> 198$ laptop, the Eee PC, run perlbox voice on it. > Perlbox-voice is user independent, needs no training, and that PC platform > cannot be beaten for cost. > As to far away mikes, it may or may not work depending on environment > noise. > Beware of false triggers too. Nice, Thanks for the tip! I'm not sure about Eee PC, the price in Denmark will be close to what I could build a server for myself (also using old parts i have lying around). I didn't know about perlbox, and thats very interesting, since I could then run Linux, and save alot on required hardware specifications. As for the microphones... yes it may prove difficult to get good recognition if im far away.. multiple microphones could maybe solve it.. but then I have to come up with a way to use multiple microphones on one input, and isolate speech from noise and echo. | |||||||||||||||||||
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Posted by Ecnerwal on September 9, 2007, 9:47 am
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> Cons: Components are often SMD's (haven't
> found any that are not) which means specialized equipment is to be > used. If you have a good magnifier to see what you are doing (or a pair of "strong" reading glasses), skinny solder and a soldering iron with a fine point, SMDs are no big deal to hand solder. Really. > Does anyone here know of such a system, or tried to develop one? It
> only needs to recognize 5-10 words. It's really a "toy" project. That's good. I find the idea of the overly automated house rather difficult to grasp the appeal of - whether the "my house is online" version (Hackers broke into my house systems and...) or the voice control version (I was on the phone, and the house went berserk listening to the conversation). Having a computer or microprocessor collate and coordinate house systems seems fine, the methods of control should be quite well defined so that the odds of unpleasant conditions are reduced to a practical minimum. -- Cats, coffee, chocolate...vices to live by | |||||||||||||||||||
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Posted by Soren on September 9, 2007, 11:30 am
Please log in for more thread options Thanks for the tips everyone!
I found an IC that looks like the thing I need... its a HM2007(P) .. now I have trouble finding a place to actually buy it.. the problem is.. i only need 1. not import 100.. Does anyone here know where to buy a HM2007 ? I found the datasheet here: http://www.imagesco.com/speech/HM2007.pdf Thanks, Soren | |||||||||||||||||||
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>
>I'm looking at possibilities of constructing a relatively cheap home
>speech recognition system to turn appliances on and off. As i see it I
>have several options:
>
>- Use a computer: Pros: Good Software is easy to get, Probably the
>fastest way to get a system. Devices could be run from the serial/
>parallel port.
> Cons: Expensive solution for such a
>"simple task". Computer must be dedicated and run all the time = high
>power consumption = expensive.
>
>- Build a system from speech recognition IC's or Microcontrollers:
> Pros: Components are relatively cheap, Low
>power consumption, Good recognition rate
> Cons: Components are often SMD's (haven't
>found any that are not) which means specialized equipment is to be
>used. Demo/development boards costs too much to justify its use. Maybe
>long development time.
>
>- Buy Specialized solution:
> Pros: Plug'n'play
> Cons: Extremely expensive, removes the fun
>of DIY :)
>
>What I really need is a robust recognition system that works with
>microphones not placed directly in front of the speaker.. like in the
>corner of the living room.
>
>Does anyone here know of such a system, or tried to develop one? It
>only needs to recognize 5-10 words. It's really a "toy" project.
>
>Thanks,
>Soren