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turning a robots head towards your voice

skypickle

Just as the amazon echo has an led ring that points to the source of your voice, i would like to drive a stepper motor that turns the robots head.

 

As this would require a far field microphone array, i have found two boards that offer this functionality

 

The respeaker microphone array

https://www.amazon.com/gp/product/B071S2ZMSQ/ref=ox_sc_act_title_2?smid=A1YP59NGBNBZUR&psc=1

 

the matrix creator

https://www.matrix.one/products/creator

 

So although

I have basic arduino/rasbPi experience, I have no real hardware expertise. The speaker would require purchase of the core unit as well so it would be somewhat more expensive. But I do not know how to compare these two hardware platforms.

Has anyone any familiarity with this hardware?

Has anyone seen this problem solved before (so I dont need to reinvent the wheel)?

 

I have investigated 'homegrown'solutions using individual mics whose signals are compared and using phase differences to determine a direction(the mic closer to the sound source gets the signal sooner). However, this is not accurate when identifying a sound impulse and requires a continuous or repeating sound.

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  • Hi Stefan,

     

    On paper, both will excel. For your described purpose alone, ReSpeaker will possibly have the edge, but it is likely harder to use. For additional functionality, Matrix Creator will have the edge.

    If you're a newcomer, between the two I'd suggest Matrix Creator. Both are a huge leap in audio capability in recent years available for developers, so in theory you possibly won't be disappointed by either.

    You should check out the github location first though, so you're aware approximately of how to code with it.

    Disclaimer: I've not used either of these products, so this is just based on what I've briefly read/heard.

  • in reply to shabaz

    thank you shabaz for ur reply. can you elaborate on the reasons you said respeaker is better for my purpose?

  • in reply to skypickle

    Hi Stefan,

     

    That product is dedicated to that task, and the chip vendor (XMOS) has significantly invested (i.e. in $$$$) in specific voice technologies.

    However, it is likely more difficult to use for a beginner (I don't know your skill level).

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