Hello,

Sorry,i'm just want to share and get ideas about my project.Here, i need to design the DAC part of voice recognition system for security system.I want to get some ideas, about this task..are there some features that can be implimented at the DAC part?..I'm feel worried,because my scope of the project is so limited.Hopefully,anyone in this forum can help me solve this problem.Thanks.

 

Why would a voice recognition system need a DAC?

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Ron (aka Rube)

 

so it can talk back and say "Huh??"

Start here: http://en.wikipedia.org/wiki/Digital...alog_converter
then go to TI, Maxim, National web sites and look up DACs.

it wouldn't hurt for you to know what it's needed for. why don't you talk to the rest of your project team or the instructor if you aren't clear on that point.

 

I was thinking along the same line, but I was wondering what he thinks it is used for.

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Ron (aka Rube)

 

Your question is nonsense so far. Please restate and say what you need to do, and the basic ideas of how you intend to do it.

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I thought what I'd do was I'd pretend I was one of those deaf-mutes.

 

Sorry,i leave this forum for a very long time.Well,after the last seminar,i still have to do this project.I'm realize that voice recognition system, do not need the DAC part.But,i need to implement this part in voice recognition system.Due to this matter,i need to convert the digital signal form into the analog signal form back.It seems likely the voice recorder and feedback function.Can anyone help me to design this part of circuit and how do i implement or attached with this system?..i'm also been adviced to do not use any of ic chip in my DAC design.Sorry,for the poor and broken language.TQ.

 

I am working in this project "Voice recognition system for security system".
can anyone guide me plz

 

Of course. But first you must speak the password loudly and clearly into your computer. Don't worry, there is a microphone somewhere on your computer. It may be on the back of the tower so you may have to speak louder than normal. The password is "homework". Say it over and over again until the system responds.
Once the password is verified, full schematics will appear on your screen. A folder will be created on your desktop with working source code in it.

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--- The days of the digital watch are numbered. ---

 

Do you want to use voice recognition, or speaker recognition?
Voice recognition identifies a word.
Speaker recognition identifies who is speaking the word.

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I thought what I'd do was I'd pretend I was one of those deaf-mutes.

 

Who taught you that?

 

According to Wikipedia (not necessarily correct), he is wrong. It says speaker and voice recognition are different names for the same operation.

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Ron (aka Rube)

 

I know it as "speech recognition," whereof there are two forms: speaker-dependent, and speaker-independent speech recognition. The latter is more difficult because it takes into account nuance, dialect, and intonation of a multitude of speakers. A speaker-dependent system is easier to train because of the greater uniformity in speech patterns of the individual.

Corey

 

Talking about speech recognition I think of "master's voice". A dog has a built in "speech recognition system". If the master doesn't call him he'll ignore orders - at least mine do.

 

you can search the google. i am also search for that because i have also made some systeam

 

which ic are you guys using to implement voice recognition, also what are the IC's available for the same.