Hi
Need compare sound from mic, example: knock to window turn on led, if knock to door turn on another led. It is dificult to create with raspberry ?
Any idea ?
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Gert van Loo
- Posts: 2487
- Joined: Tue Aug 02, 2011 7:27 am
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Re: Best way to compare sound from mic
You have two problems:
1/ Recording the sound
2/ Analysing the sound.
As for (1): The Pi has no direct recording capabilities but the issue of sound recording has been asked many times. I suggest you look at some of the appropriate subjects.
For (2): I would apply Fast Fourier transformation on the sound to convert from
the time domain to the frequency domain and then have a look at the major differences
between the frequencies present in two types of sound.
1/ Recording the sound
2/ Analysing the sound.
As for (1): The Pi has no direct recording capabilities but the issue of sound recording has been asked many times. I suggest you look at some of the appropriate subjects.
For (2): I would apply Fast Fourier transformation on the sound to convert from
the time domain to the frequency domain and then have a look at the major differences
between the frequencies present in two types of sound.
Re: Best way to compare sound from mic
Thank's for reaplay men 
Maybe you see somewhere project like this ? Whrite from zero, to me its mission impossible
Maybe you see somewhere project like this ? Whrite from zero, to me its mission impossible