Arduino uno - Voice recognition module v3 - Voice commands h

Development Boards Arduino
1

Hello,

Me and a partner are working on a project where we need to active leds with voice commands. The module that we are using is the Voice recognition v3 module (http://www.elechouse.com/elechouse/inde … ts_id=2254).

We’ve connected the module with a arduino uno and captured some words with a microphone that looks like this (http://ecx.images-amazon.com/images/I/31emj5Hi5DL.jpg)

In our case we would like that people talk and that the module is capturing the sound(/words) from a distance of aprox 1-3 meters.

But the microphone only works if you say something from a distance of 5-20cm…

So we’ve tried to make our own microphone with this amplifier http://www.velleman.eu/images/products/0/k1803_np.jpg + http://vikash.info/audio/measurement_mi … ules01.jpg

But that doesn’t give us any input of information when we look at the serial monitor when using arduino sketch…

Does someone has some tips for our project?

2

http://vikash.info/audio/measurement_mi … ules01.jpg

Those are Electret microphones. They need a bias voltage to work:

https://en.wikipedia.org/wiki/Electret_microphone

http://www.epanorama.net/circuits/micro … ering.html

How do you have them hooked up to the amplifier? And do you have a link to the amplifiers product page, or documentation?

3

Thanks we will dig into the voltage thing…

We used this amplifier

http://www.velleman.eu/products/view/?c … en&id=8897

4

First check if the microphone and amplifier do it’s job on it’s own. Plug it into a stereo system, or into your pc’s line-in socket. If it works, even at 3 meters instead of 20cm, then the problem lies in the configuration of the voice recognition module. But since the sound at such a distance is often less intense it is easier for the background noise to hide the voice signal.