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Getting a microphone to work

Former Member

Hi

 

I am following a tutorial on getting speech recognition working on the RPi, here:

 

http://www.aonsquared.co.uk/raspi_voice_control

 

I purchased a USB microphone; one of these:

 

http://www.ebay.co.uk/itm/ws/eBayISAPI.dll?ViewItem&item=360474309657&ssPageName=ADME:L:OC:GB:3160

 

and have plugged it into the upper USB socket on the RPi itself (I am using the RPi connected to a Motorolla Lapdock).

 

I installed the packages listed on the tutorial which include the 'arecord' program and executed the command:

 

arecord -d 10 -D plughw:1,0 test.wav

 

It appears to start recording with the message:

 

Recording WAVE.. etc

 

but then bombs out with the error:

 

arecord: set_params:1145: Unable to install hw params

 

followed by some format information.

 

It hasn't written any wave file.

 

Any ideas what might be causing the problem?

 

Thanks

Spencer

Parents Reply
  • in reply to Former Member

    Hi Ray

     

    Thanks for the response.

     

    I rtied that but no luck however having booted the RPi up again this morning I got these errors:

    image

    Looks like the device driver is not loading - I should have tried rebooting before!

     

    I then rebooted again and I get a load of errors like:

     

    smsc95xx 1-1.1:1.0: eth0: kevent 4 may have been dropped

     

    hundreds of them!

     

    I have read on a few forums about common power issues with USB and I wonder if my current wiring (the RPi being powered from the lapdock) is causing issues.

     

    I'm going to try powering the RPi directly from my mobile charger, the lapdock via it's own charger and get out my powered hub out if necessary and see if that has any effect.

     

    Regards

    Spencer

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