Using claps for actvation

[sinaaa]

Hello, I have a problem with using claps.

I am trying to use clap as a switch that a system turns off and on using a clap but unfortunately, I cannot have the system running as the microphones are constantly recording audio so I am unable to find the minimum and maximum amplitudes to determine if it is a clap or not as they are constantly changing.

would you please explain to me in simple terms as I am new to the LabVIEW.

thank you.

[sinaaa]

Hello I had the same problem here 

I am trying to use clap as a switch that a system turns off and on using a clap but unfortunately, I cannot have the system running as the microphones are constantly recording audio so I am unable to find the minimum and maximum amplitudes to determine if it is a clap or not as they are constantly changing.

would you please explain to me in simple terms as I am new to the LabVIEW.

thank you.

[GerdW]

Hi sina,

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@sinaaa wrote:

Hello, I have a problem with using claps.

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Don't they clap as intended? 🙂

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@sinaaa wrote:

I cannot have the system running as the microphones are constantly recording audio

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Isn't this expected behaviour? You surely want to record audio data constantly to be able to recognize the clap sound!?

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@sinaaa wrote:

so I am unable to find the minimum and maximum amplitudes to determine if it is a clap or not as they are constantly changing.

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I don't think a simple min/max comparison will fulfill the requirement. Maybe some FFT to detect typical clap sounds?

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@sinaaa wrote:

would you please explain to me in simple terms as I am new to the LabVIEW.

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When you are new to LabVIEW you should note the Training resources offered for free in the header of the LabVIEW board!

[sinaaa]

Hello Gerdw

So let me put it this way.

I want to create a switch by detecting claps but i was unable to use it as a switch. I have some ideas to use shift register but i dont know how to implement it 

Would you please help me?

[GerdW]

Hi sina,

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@sinaaa wrote:

I want to create a switch by detecting claps but i was unable to use it as a switch. I have some ideas to use shift register but i dont know how to implement it 

Would you please help me?

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Sure!

Why don't you attach your VI and tell us why you cannot implement your ideas using shift registers?

[sinaaa]

Sure 

 

Here is my VI although it is not working 

Would you please tell me how should i proceed?

Thank you

[GerdW]

Hi Sina,

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@sinaaa wrote:

Sure Here is my VI although it is not working 

Would you please tell me how should i proceed?

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Ok, all we get is a blurry photograph, even taken with wrong orientation of the camera.

What would you say when you ask for some C sourcecode and all you get is a blurry image instead of a text file?

Proceed with attaching the real VI!

[sinaaa]

sorry, here you go.

[GerdW]

Hi Sina,

you already use the shift register correctly, I just rearranged some parts of your VI:

So what is the real problem with your VI? (Apart from the problem of a buggy (IMHO) calculation of pump speed.)

[Yamaeda]

Since you only check the max value, any loud sound would trigger the function. It might be good enough, but the aforementioned FFT would be a better solution, and e.g. check the power of some key frequencies, like 5 kHz (i don't know if that's a big one of a clap, but such a short, sharp sound should have some fairly high frequency components, measure and compare)